CFL bulbs contain mercury and when they break in your home a tiny amount of mercury will be released and become a more or less permanent part of your environment.
Here's a little taste of what Health Canada has to say about the dangers of mercury: If mercury is burned, heated, sprinkled or spilled in the home, a poisonous gas can be produced, requiring a clean-up procedure.
Your first instinct when you break one of those coiled CFL light bulbs will be to get out the led street lights price Do not Here's what Health Canada suggests..:
The amount of mercury found in household products does not usually lead to serious health problems and can often be cleaned up without the help of a trained professional. However, even small spills should be treated as hazardous and cleaned up with caution. Remember to report these spills to the local environmental health authorities. Depending on the size of the spill, hiring a Contractor to monitor mercury levels in air, and to conduct a professional clean-up, may be advisable. There are also commercially available small mercury spill kits that can be obtained. Never vacuum a mercury spill with a household vacuum cleaner. It will increase the vaporization of the mercury.
A few helpful hints to remember are:
• Do not put contaminated items in the washing machine;
• Do not vacuum the spill;
• Do not use a broom or a brush;
• Do not pour mercury down the drain; and Do not throw mercury or contaminated items in the garbage.
Incandescent bulbs have been banned from the marketplace and are in the process of being phased out. They do cast a very palatable light, which is probably why they technology to replace them has been slow to develop.
The cheapest way to replace incadescent bulbs is to switch to CFLs and you will see a lot of propaganda from BC Hydro aimed at helping you make the switch. The only rational explanation for promoting CFLs is that they are cheap, so cheap that people will balk at the price of LEDs, which are a far better solution.
LEDs are more efficient, longer lasting and may throw a better quality of light. Today Environment Canada provided yet another good reason not to buy CFLs and instead go straight to LED lights. Canada's mercury waste facilities are not ready for the coming onslaught of mercury- laden CFL bulbs as they burn out and break.
With no effective way to collect the bulbs, most will go to landfill where they will begin to poison the groundwater, rivers and eventually our oceans.
Even the few bulbs that are collected are unlikely to be rendered harmless. There are no facilities in Canada to extract mercury from waste. How long the United States will allow Canadian toxic waste to be shipped across the border is anybody's guess.
2014年10月30日星期四
Understanding LED Drive Current & Current Density
When evaluating the working stresses of a semiconductor device, such as an LED, the output current from the power supply or the current delivered to the circuit board, LED string and LED package are of little consequence without associating these values to the device ratings. With respect to power, the electrical metric that is most closely associated with LED performance and lifetime is current density. Performance metrics such as efficacy, lumen maintenance and color point stability depend largely upon the designed current level (or current density) of the LED, which may be related to the physical size of the led high bay light for sale or electrical arrangement of multiple die within an LED package.
Current density can be thought of in terms of the amount of current observed over a specified surface. For example, the LED that is used in Hubbell Industrial's HBL luminaire has an effective surface area of 2mm². While the current applied directly to the LED package is measured as 700mA, the current density is actually 350mA / mm² (700mA ÷ 2mm²). This would be equivalent to operating a 1mm LED at 350mA. Where the HBL utilizes 72 high-power large-area ceramic LEDs to produce over 16,000 lumens, competitive systems utilizing smaller-die LEDs may require a greater quantity of LEDs and optics to provide a comparable lumen package.
With respect to lumen maintenance, the two areas that most commonly provide insight into the effectiveness of a luminaire's electrical and thermal design are the operating temperature of the LEDs and system efficacy. In the case of the above referenced HBL luminaire, the system efficacy is measured at 95 lm / W, with an LED drive current of 700mA. In addition to the power supply and optical efficiency, the high LED efficacy can also be attributed to the LEDs being operated at a full 700mA below the recommended maximum drive current of 1400mA.
Additionally, in an elevated 45 ° C ambient condition the operating temperature of the LEDs within the HBL is less than 75 ° C, which is 30 ° C lower than the recommended maximum case temperature (105 ° C) specified by the LED manufacturer. Under these conditions, the reported lumen maintenance, as defined by IES TM-21-11 is 94.62% at 60,000 hours. The calculated L70 value (70% lumen maintenance) as defined by the same standard is 501,000 hours.
In summary, as buy led high bay lamps continue to be made available in more diverse packages it is important to not only consider the drive current applied to the LED, but also the current density. While many low-power LEDs may operate at a low current on account of their die size, larger LEDs may be driven at several amps for similar reasons. Therefore, obtaining greater insight into the operational limitations of the LEDs in question, along with the measured system performance, will lead to a greater understanding and clarity when evaluating LED luminaires .
Current density can be thought of in terms of the amount of current observed over a specified surface. For example, the LED that is used in Hubbell Industrial's HBL luminaire has an effective surface area of 2mm². While the current applied directly to the LED package is measured as 700mA, the current density is actually 350mA / mm² (700mA ÷ 2mm²). This would be equivalent to operating a 1mm LED at 350mA. Where the HBL utilizes 72 high-power large-area ceramic LEDs to produce over 16,000 lumens, competitive systems utilizing smaller-die LEDs may require a greater quantity of LEDs and optics to provide a comparable lumen package.
With respect to lumen maintenance, the two areas that most commonly provide insight into the effectiveness of a luminaire's electrical and thermal design are the operating temperature of the LEDs and system efficacy. In the case of the above referenced HBL luminaire, the system efficacy is measured at 95 lm / W, with an LED drive current of 700mA. In addition to the power supply and optical efficiency, the high LED efficacy can also be attributed to the LEDs being operated at a full 700mA below the recommended maximum drive current of 1400mA.
Additionally, in an elevated 45 ° C ambient condition the operating temperature of the LEDs within the HBL is less than 75 ° C, which is 30 ° C lower than the recommended maximum case temperature (105 ° C) specified by the LED manufacturer. Under these conditions, the reported lumen maintenance, as defined by IES TM-21-11 is 94.62% at 60,000 hours. The calculated L70 value (70% lumen maintenance) as defined by the same standard is 501,000 hours.
In summary, as buy led high bay lamps continue to be made available in more diverse packages it is important to not only consider the drive current applied to the LED, but also the current density. While many low-power LEDs may operate at a low current on account of their die size, larger LEDs may be driven at several amps for similar reasons. Therefore, obtaining greater insight into the operational limitations of the LEDs in question, along with the measured system performance, will lead to a greater understanding and clarity when evaluating LED luminaires .
Purdue Grows Ornamental Plant Seedlings with Blue and Red LED Lights
Purdue University researchers' success in using red and blue led street light with solar panel as the only source of light to grow ornamental plant seedlings indoors has led to a new phase of determining whether they can reduce production time with more colors.
The research is important because most seedlings are grown in greenhouses in the late winter and early spring, a time when sunlight with enough growing power is low, especially in northern states. Seedlings need to grow at that time to meet spring and summer sales of bedding plants, so supplemental lighting from electric lamps is typically needed.
Purdue University associate professor Roberto Lopez (right) and doctoral student Joshua Craver are finding that sole-source LEDs can produce high-quality ornamental seedlings. (Purdue Agricultural Communication Photo / Tom Campbell)
In the first part of the research, associate professor of horticulture Roberto Lopez and master's student Wesley Randall grew seedlings from five bedding plant species - impatiens, marigold, petunia, vinca and zonal geranium - some using light-emitting diodes, known as LEDs, as . a supplement to sunlight They found that the quality of seedlings grown with LEDs was similar to - and in some cases better than - those grown in a greenhouse with high-pressure sodium lamps (similar to street or arena lamps) to supplement sunlight.
"It was quite surprising to see how uniform, compact and sturdy the seedlings were compared to seedlings produced in the greenhouse with sunlight and supplemental lighting from LEDs," Lopez said. Compact seedlings are desirable because tall seedlings can be damaged in boxes during shipping.
Lopez said the research shows that sole-source LED lighting could be used to grow ornamental plant seedlings indoors with a technique known as multilayer production, in which plants are stacked on top of each other on shelves such as in a warehouse where there is no sunlight . Some companies, especially in Japan, already use multilayer production for leafy vegetables.
High-intensity LEDs, with their red and blue colors resembling Christmas lights, convert electricity into light that plants use for photosynthesis. They are much more efficient than traditional lights such as incandescent bulbs and fluorescent lights because they consume less energy. They last longer, too, but they also are more expensive to buy.
The current research led by Lopez and doctoral student Joshua Craver has advanced to the stage of trying to make the seedlings grow faster than the typical 3-4 weeks in a greenhouse, using red, blue, white and far-red LEDs. Growing time was not considered in the first phase of the research.
Annual bedding plant seedlings or plugs are considered high quality when they are compact, fully rooted transplants with a large stem caliper and high root dry mass. Greenhouses in northern latitudes rely on supplemental lighting (SL) from high-pressure sodium lamps (HPS) during winter months to achieve high-quality, finished plugs. Light-emitting diodes (LEDs) offer higher energy efficiencies, a long operating life, and precise waveband specificity that can eliminate wavebands not considered useful. Seedlings of Antirrhinum, Catharanthus, Celosia, Impatiens, Pelargonium, Petunia, Tagetes, Salvia, and Viola were grown at 21 ° C under a 16-hour photoperiod of ambient solar light and SL of 100 μmol · m-2 · s-1 from either HPS lamps or led high bay light manufacturers with varying proportions (%) of red: blue light (100:. 0, 85:15, or 70:30) Height of Catharanthus, Celosia, Impatiens, Petunia, Tagetes, Salvia, and Viola was 31%, 29%, 31%, 55% , 20%, 9%, and 35% shorter, respectively, for seedlings grown under the 85:15 red:. blue LEDs compared with those grown under HPS lamps Additionally, stem caliper of Antirrhinum, Pelargonium, and Tagetes was 16%, 8 %, and 13% larger, respectively, for seedlings grown under the 85:15 red:. blue LEDs compared with seedlings grown under HPS lamps The quality index (QI), a quantitative measurement of quality, was similar for Antirrhinum, Catharanthus, Impatiens , Pelargonium, and Tagetes grown under LEDs and HPS lamps However, it was significantly higher for Petunia, Salvia, and Viola under 85:15, 70:30, and 100:. 0 red: blue LEDs than under HPS lamps, respectively These. results indicate that seedling quality for the majority of the species tested under SL from LEDs providing both red and blue light was similar or higher than those grown under HPS lamps.
The research is important because most seedlings are grown in greenhouses in the late winter and early spring, a time when sunlight with enough growing power is low, especially in northern states. Seedlings need to grow at that time to meet spring and summer sales of bedding plants, so supplemental lighting from electric lamps is typically needed.
Purdue University associate professor Roberto Lopez (right) and doctoral student Joshua Craver are finding that sole-source LEDs can produce high-quality ornamental seedlings. (Purdue Agricultural Communication Photo / Tom Campbell)
In the first part of the research, associate professor of horticulture Roberto Lopez and master's student Wesley Randall grew seedlings from five bedding plant species - impatiens, marigold, petunia, vinca and zonal geranium - some using light-emitting diodes, known as LEDs, as . a supplement to sunlight They found that the quality of seedlings grown with LEDs was similar to - and in some cases better than - those grown in a greenhouse with high-pressure sodium lamps (similar to street or arena lamps) to supplement sunlight.
"It was quite surprising to see how uniform, compact and sturdy the seedlings were compared to seedlings produced in the greenhouse with sunlight and supplemental lighting from LEDs," Lopez said. Compact seedlings are desirable because tall seedlings can be damaged in boxes during shipping.
Lopez said the research shows that sole-source LED lighting could be used to grow ornamental plant seedlings indoors with a technique known as multilayer production, in which plants are stacked on top of each other on shelves such as in a warehouse where there is no sunlight . Some companies, especially in Japan, already use multilayer production for leafy vegetables.
High-intensity LEDs, with their red and blue colors resembling Christmas lights, convert electricity into light that plants use for photosynthesis. They are much more efficient than traditional lights such as incandescent bulbs and fluorescent lights because they consume less energy. They last longer, too, but they also are more expensive to buy.
The current research led by Lopez and doctoral student Joshua Craver has advanced to the stage of trying to make the seedlings grow faster than the typical 3-4 weeks in a greenhouse, using red, blue, white and far-red LEDs. Growing time was not considered in the first phase of the research.
Annual bedding plant seedlings or plugs are considered high quality when they are compact, fully rooted transplants with a large stem caliper and high root dry mass. Greenhouses in northern latitudes rely on supplemental lighting (SL) from high-pressure sodium lamps (HPS) during winter months to achieve high-quality, finished plugs. Light-emitting diodes (LEDs) offer higher energy efficiencies, a long operating life, and precise waveband specificity that can eliminate wavebands not considered useful. Seedlings of Antirrhinum, Catharanthus, Celosia, Impatiens, Pelargonium, Petunia, Tagetes, Salvia, and Viola were grown at 21 ° C under a 16-hour photoperiod of ambient solar light and SL of 100 μmol · m-2 · s-1 from either HPS lamps or led high bay light manufacturers with varying proportions (%) of red: blue light (100:. 0, 85:15, or 70:30) Height of Catharanthus, Celosia, Impatiens, Petunia, Tagetes, Salvia, and Viola was 31%, 29%, 31%, 55% , 20%, 9%, and 35% shorter, respectively, for seedlings grown under the 85:15 red:. blue LEDs compared with those grown under HPS lamps Additionally, stem caliper of Antirrhinum, Pelargonium, and Tagetes was 16%, 8 %, and 13% larger, respectively, for seedlings grown under the 85:15 red:. blue LEDs compared with seedlings grown under HPS lamps The quality index (QI), a quantitative measurement of quality, was similar for Antirrhinum, Catharanthus, Impatiens , Pelargonium, and Tagetes grown under LEDs and HPS lamps However, it was significantly higher for Petunia, Salvia, and Viola under 85:15, 70:30, and 100:. 0 red: blue LEDs than under HPS lamps, respectively These. results indicate that seedling quality for the majority of the species tested under SL from LEDs providing both red and blue light was similar or higher than those grown under HPS lamps.
Top Singapore University Lights up Photonics Research with US $100 million Institute
The next generation ultra-fast Internet or ground-breaking electronic circuits powered by light instead of electricity could very well be built on research done at Nanyang Technological University (NTU).
To establish Singapore as a powerhouse in photonics and optics research, NTU today launched The Photonics Institute, one of the most advanced institutes in the field today.
NTU also unveiled Singapore's first high-tech fibre optic research manufacturing facility today. It is housed at one of the institute's five research centres.
Nanyang Technological University's new photonics institute one of the most advanced in the world. (LEDinside / Nanyang Technological University)
The national-level Photonics Institute at NTU will focus on research involving light technology such as those found in fibre-optic cables, lasers and consumer products like DVD / Blu-ray devices or remote control devices.
NTU is partnering the University of Southampton, UK to set up the new institute. Southampton is home to the Optoelectronics Research Centre, world renowned as the birth place of the ubiquitous fibre-optic Internet now found in most homes.
The $ 80 million Photonics Institute at NTU is funded and supported by industry partners and various national agencies, including A * STAR, DSO National Laboratories, the Economic Development Board Singapore, the Ministry of Education and the National Research Foundation, Prime Minister's Office, Singapore.
The Guest-of-Honour at the launch ceremony was Mr Teo Ser Luck, Minister of State, Ministry of Trade and Industry, who witnessed NTU signing a research partnership agreement with Southampton to formalise the setting up of The Photonics Institute.
NTU President Prof Bertil Andersson said photonics is an enabling technology with applications that span many industry sectors, from communications to manufacturing, and even space technology.
"We have already seen examples of how photonic technologies, such as optical fibres networks and lasers, have changed our society through the Internet," Prof Andersson said. "Together with Southampton, our new institute aims to be become a focal point for photonics research in Singapore and to drive innovations on a global scale.
"This joint initiative is an important conduit for the transfer of scientific and technological knowledge, breakthroughs and industrial innovations between Singapore and United Kingdom."
University of Southampton Vice-Chancellor Prof Don Nutbeam said, "Our partnership with NTU is symbolic of Southampton's strategy for internationalisation - working closely with world class universities to achieve mutual benefits in research, education and enterprise.
"The University Southampton has been at the forefront of research and development in photonics for several decades and continues to be a significant contributor to the growth of the photonics industry in the UK and internationally. This pioneering work on the optical fibres, fibre lasers and amplifiers that power the internet today has been driven by our world-leading researchers such as Professor Sir David Payne and Professor Nicolay Zheludev, both of whom have major roles in our dual-centre with NTU. "
The Photonics Institute will comprise five different research centres, all related to the field of photonics and optics:
1. Centre for Optical Fibre Technology
2. Centre for Disruptive Photonic Technologies
3. LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays
4. Centre for Optical & Laser Engineering
5. OPTIMUS! Photonic Centre of Excellence
. The Photonics Institute will be headed by three co-directors They are NTU professors Tjin Swee Chuan and Nikolay Zheludev; and Professor Sir David Payne, the director of the Optoelectronics Research Centre at Southampton.
Professor Nikolay Zheludev, who is also the director for the Centre for Disruptive Photonic Technologies, said the new institute will be a new model which spans both universities in Singapore and the UK, aimed at "developing disruptive ideas in next-generation photonics".
"The Photonics Institute will be a cradle of knowledge and intellectual property, as well as a focal point for developing ground-breaking applications of light-enabled technologies," he said.
The new institute will have a total of 120 scientists and staff from its five research centres, with a combined floor space of 4,000 square meters.
Opening of the new Centre for Optical Fibre Technology
NTU's official opening of the institute also marks the launch of its Centre for Optical Fibre Technology, which houses one of the world's most advanced fibre manufacturing facility. This new research facility gives Singapore the ability to manufacture experimental fibre optic cables for the first time.
The centre is set up jointly by NTU and University of Southampton, in partnership with the Agency for Science, Technology and Research (A * STAR) and DSO National Laboratories.
Professor Payne said the new three-storey fibre manufacturing facility was designed with the intention of developing next generation fibre technology.
"The new centre will allow us to fabricate various types of optical fibres, such as soft glass, silica and photonic-crystal fibres, as well as special fibres used in biomedical and sensing applications."
NTU Professor Tjin Swee Chuan, Co-Director of The Photonics Institute said COFT has 11 projects already lined up and that "a key mission of the photonics institute is also to provide manpower training in the field of photonics and optics for Singapore".
Dr Tan Geok Leng, Executive Director, Science and Engineering Research Council, A * STAR said, "Advanced optics and photonics hold the key to ultra-high-speed communications and computing in healthcare, manufacturing, aerospace and other important vertical sectors. By participating in this effort, A * STAR hopes to catalyse progress in these enabling technologies to create new applications, develop new skillsets and power new growth areas. "
Dr Goh Joo Thiam, Director, Emerging Systems, DSO National Laboratories, said:. "DSO has been collaborating with NTU to further our research in many areas We are thus pleased to be able to partner NTU in the development of their Photonics Institute that will complement our work in photonics, lasers and optics. "
To establish Singapore as a powerhouse in photonics and optics research, NTU today launched The Photonics Institute, one of the most advanced institutes in the field today.
NTU also unveiled Singapore's first high-tech fibre optic research manufacturing facility today. It is housed at one of the institute's five research centres.
Nanyang Technological University's new photonics institute one of the most advanced in the world. (LEDinside / Nanyang Technological University)
The national-level Photonics Institute at NTU will focus on research involving light technology such as those found in fibre-optic cables, lasers and consumer products like DVD / Blu-ray devices or remote control devices.
NTU is partnering the University of Southampton, UK to set up the new institute. Southampton is home to the Optoelectronics Research Centre, world renowned as the birth place of the ubiquitous fibre-optic Internet now found in most homes.
The $ 80 million Photonics Institute at NTU is funded and supported by industry partners and various national agencies, including A * STAR, DSO National Laboratories, the Economic Development Board Singapore, the Ministry of Education and the National Research Foundation, Prime Minister's Office, Singapore.
The Guest-of-Honour at the launch ceremony was Mr Teo Ser Luck, Minister of State, Ministry of Trade and Industry, who witnessed NTU signing a research partnership agreement with Southampton to formalise the setting up of The Photonics Institute.
NTU President Prof Bertil Andersson said photonics is an enabling technology with applications that span many industry sectors, from communications to manufacturing, and even space technology.
"We have already seen examples of how photonic technologies, such as optical fibres networks and lasers, have changed our society through the Internet," Prof Andersson said. "Together with Southampton, our new institute aims to be become a focal point for photonics research in Singapore and to drive innovations on a global scale.
"This joint initiative is an important conduit for the transfer of scientific and technological knowledge, breakthroughs and industrial innovations between Singapore and United Kingdom."
University of Southampton Vice-Chancellor Prof Don Nutbeam said, "Our partnership with NTU is symbolic of Southampton's strategy for internationalisation - working closely with world class universities to achieve mutual benefits in research, education and enterprise.
"The University Southampton has been at the forefront of research and development in photonics for several decades and continues to be a significant contributor to the growth of the photonics industry in the UK and internationally. This pioneering work on the optical fibres, fibre lasers and amplifiers that power the internet today has been driven by our world-leading researchers such as Professor Sir David Payne and Professor Nicolay Zheludev, both of whom have major roles in our dual-centre with NTU. "
The Photonics Institute will comprise five different research centres, all related to the field of photonics and optics:
1. Centre for Optical Fibre Technology
2. Centre for Disruptive Photonic Technologies
3. LUMINOUS! Centre of Excellence for Semiconductor Lighting and Displays
4. Centre for Optical & Laser Engineering
5. OPTIMUS! Photonic Centre of Excellence
. The Photonics Institute will be headed by three co-directors They are NTU professors Tjin Swee Chuan and Nikolay Zheludev; and Professor Sir David Payne, the director of the Optoelectronics Research Centre at Southampton.
Professor Nikolay Zheludev, who is also the director for the Centre for Disruptive Photonic Technologies, said the new institute will be a new model which spans both universities in Singapore and the UK, aimed at "developing disruptive ideas in next-generation photonics".
"The Photonics Institute will be a cradle of knowledge and intellectual property, as well as a focal point for developing ground-breaking applications of light-enabled technologies," he said.
The new institute will have a total of 120 scientists and staff from its five research centres, with a combined floor space of 4,000 square meters.
Opening of the new Centre for Optical Fibre Technology
NTU's official opening of the institute also marks the launch of its Centre for Optical Fibre Technology, which houses one of the world's most advanced fibre manufacturing facility. This new research facility gives Singapore the ability to manufacture experimental fibre optic cables for the first time.
The centre is set up jointly by NTU and University of Southampton, in partnership with the Agency for Science, Technology and Research (A * STAR) and DSO National Laboratories.
Professor Payne said the new three-storey fibre manufacturing facility was designed with the intention of developing next generation fibre technology.
"The new centre will allow us to fabricate various types of optical fibres, such as soft glass, silica and photonic-crystal fibres, as well as special fibres used in biomedical and sensing applications."
NTU Professor Tjin Swee Chuan, Co-Director of The Photonics Institute said COFT has 11 projects already lined up and that "a key mission of the photonics institute is also to provide manpower training in the field of photonics and optics for Singapore".
Dr Tan Geok Leng, Executive Director, Science and Engineering Research Council, A * STAR said, "Advanced optics and photonics hold the key to ultra-high-speed communications and computing in healthcare, manufacturing, aerospace and other important vertical sectors. By participating in this effort, A * STAR hopes to catalyse progress in these enabling technologies to create new applications, develop new skillsets and power new growth areas. "
Dr Goh Joo Thiam, Director, Emerging Systems, DSO National Laboratories, said:. "DSO has been collaborating with NTU to further our research in many areas We are thus pleased to be able to partner NTU in the development of their Photonics Institute that will complement our work in photonics, lasers and optics. "
Meijer Partners with GE Lighting to Educate Consumers about Energy Efficient Lighting
Shoppers who get ready for their annual trip to buy light bulbs due to the end of daylight saving time may be in for a surprise this year as traditional incandescent light bulbs begin to disappear. To help its customers through this transition, led high bay light supplier has partnered with GE Lighting, America's most trusted lighting brand, to create a new shopping experience to help its shoppers navigate the many options as they prepare for the longer winter nights.
"Even though we've known for a while that incandescent light bulbs are being phased out, customers have been lulled into thinking the old school bulbs are not going away because they have remained on shelves," said David Hart, electrical, plumbing and home environment buyer for the Grand Rapids, Mich.-based retailer. "We're now approaching the point where the supply is disappearing, so we're trying to help our shoppers understand the multiple new options in a category that's become much more technologically advanced . "
Meijer is the first retailer in the country to partner with GE on this type of program, which required a complete remodel of the retailers lighting aisle. Not only can customers choose between Halogen, CFL, Covered CFL and LED, they will also have access to detailed information through displays and TV monitors to help them make a decision on what's best for them. It may seem like a lot for something as simple as light bulbs, but light bulbs have changed.
"We know the light consumers love, and we've reinvented and perfected energy-efficient lighting, like CFL and LED light bulbs, to emulate incandescent light," said John Strainic, general manager, consumer lighting for GE in North America. "By collaborating with Meijer, we are able to make the lighting aisle experience simpler and more intuitive. Switching to energy-efficient lighting, like LEDs, requires consumers to change the way they've lit their home for more than 100 years, and we need to help guide them to better understand why LED lighting is the best lighting option; and, ultimately, help them grasp that LED is where lighting is headed ".
Light bulbs are a popular item with Meijer customers this time of year. Meijer traditionally sees light bulbs sales increase by up to 40% in the weeks surrounding the end of daylight saving time.
GE Lighting launched 31 new led high bay light for sale at Meijer to meet consumer demand to fill every socket in their homes with energy-efficient LED lighting These GE LED options include.:
Indoor floodlight LED bulbs, used in recessed ceiling lighting, available in soft, warm white and GE reveal® bulbs, which filter out the yellow rays - making colors pop.
Decorative LED lighting, like candelabras used in chandeliers and globe lighting used for bathroom vanity lighting.
To calculate a home's energy-saving potential by switching to LED lighting, GE Lighting has developed a GE LED energy-savings calculator. This tool translates energy savings into relatable terms for consumers, making the switch to GE LED a no-brainer.
"Even though we've known for a while that incandescent light bulbs are being phased out, customers have been lulled into thinking the old school bulbs are not going away because they have remained on shelves," said David Hart, electrical, plumbing and home environment buyer for the Grand Rapids, Mich.-based retailer. "We're now approaching the point where the supply is disappearing, so we're trying to help our shoppers understand the multiple new options in a category that's become much more technologically advanced . "
Meijer is the first retailer in the country to partner with GE on this type of program, which required a complete remodel of the retailers lighting aisle. Not only can customers choose between Halogen, CFL, Covered CFL and LED, they will also have access to detailed information through displays and TV monitors to help them make a decision on what's best for them. It may seem like a lot for something as simple as light bulbs, but light bulbs have changed.
"We know the light consumers love, and we've reinvented and perfected energy-efficient lighting, like CFL and LED light bulbs, to emulate incandescent light," said John Strainic, general manager, consumer lighting for GE in North America. "By collaborating with Meijer, we are able to make the lighting aisle experience simpler and more intuitive. Switching to energy-efficient lighting, like LEDs, requires consumers to change the way they've lit their home for more than 100 years, and we need to help guide them to better understand why LED lighting is the best lighting option; and, ultimately, help them grasp that LED is where lighting is headed ".
Light bulbs are a popular item with Meijer customers this time of year. Meijer traditionally sees light bulbs sales increase by up to 40% in the weeks surrounding the end of daylight saving time.
GE Lighting launched 31 new led high bay light for sale at Meijer to meet consumer demand to fill every socket in their homes with energy-efficient LED lighting These GE LED options include.:
Indoor floodlight LED bulbs, used in recessed ceiling lighting, available in soft, warm white and GE reveal® bulbs, which filter out the yellow rays - making colors pop.
Decorative LED lighting, like candelabras used in chandeliers and globe lighting used for bathroom vanity lighting.
To calculate a home's energy-saving potential by switching to LED lighting, GE Lighting has developed a GE LED energy-savings calculator. This tool translates energy savings into relatable terms for consumers, making the switch to GE LED a no-brainer.
2014年10月29日星期三
Samsung boosts efficacy to 143 lm/W in new COB LED products
Samsung Electronics has announced that the LC series of chip-on-board (COB) LEDs now offer efficacy improvements in the range of 10% across the various color temperatures at which the components are available. The company has also added new 3500K versions of the LEDs and says that it will offer 90-CRI versions of the LEDs by mid-year.
The announcement covers the LC013B LEDs with an 11-mm light-emitting surface (LES) and the LC026B and LC040B led street light wholesale with a 17-mm LES. As the model numbers imply, the LEDs are rated at 13W, 26W, and 40W, respectively. Samsung targets spotlights, downlights, and directional retrofit lamps including PAR and MR products with the LEDs.
Across all three product families, efficacy is now 130 lm/W at 3000K and 143 lm/W at 5000K. Those numbers are increased from 120 lm/W and 129 lm/W, respectively.
The efficacy specifications place the Samsung components in the performance neighborhood of other recent COB announcements such as the products we covered from Cree, Philips Lumileds, and Luminus Devices back in October. But based on a look at datasheets for Samsung's existing LC series of products, the touted efficacy is likely measured at a 25°C temperature. Samsung did not specify the operating temperature in the announcement. But many LED companies have begun characterizing components at higher temperatures that are more typical of operation in solid-state lighting (SSL) products.
The new models will be available in February with a CRI max of 80. The LED array technology used in the COB LEDs allows Samsung to offer components within a 3-step MacAdam ellipse. The led street lighting fixture are backed by LM-80 test data.
Samsung asserted that the LEDs are compatible with Zhaga specifications for modular light engines. In reality, Zhaga books don't specify LED technology, but the LES characteristics of the LC series allow the LEDs to be used with light engines that are based on Zhaga Books.
Samsung initially announced the LC series of products at a press conference held at the Lightfair International tradeshow in April 2013 that features both SSL end products and LED news from the company.
The announcement covers the LC013B LEDs with an 11-mm light-emitting surface (LES) and the LC026B and LC040B led street light wholesale with a 17-mm LES. As the model numbers imply, the LEDs are rated at 13W, 26W, and 40W, respectively. Samsung targets spotlights, downlights, and directional retrofit lamps including PAR and MR products with the LEDs.
Across all three product families, efficacy is now 130 lm/W at 3000K and 143 lm/W at 5000K. Those numbers are increased from 120 lm/W and 129 lm/W, respectively.
The efficacy specifications place the Samsung components in the performance neighborhood of other recent COB announcements such as the products we covered from Cree, Philips Lumileds, and Luminus Devices back in October. But based on a look at datasheets for Samsung's existing LC series of products, the touted efficacy is likely measured at a 25°C temperature. Samsung did not specify the operating temperature in the announcement. But many LED companies have begun characterizing components at higher temperatures that are more typical of operation in solid-state lighting (SSL) products.
The new models will be available in February with a CRI max of 80. The LED array technology used in the COB LEDs allows Samsung to offer components within a 3-step MacAdam ellipse. The led street lighting fixture are backed by LM-80 test data.
Samsung asserted that the LEDs are compatible with Zhaga specifications for modular light engines. In reality, Zhaga books don't specify LED technology, but the LES characteristics of the LC series allow the LEDs to be used with light engines that are based on Zhaga Books.
Samsung initially announced the LC series of products at a press conference held at the Lightfair International tradeshow in April 2013 that features both SSL end products and LED news from the company.
MSP airport to combine LED lighting and solar generation on garages
The Metropolitan Airports Commission operates seven airports in the Minnesota Twin Cities area of Minneapolis-St. Paul, and has begun a massive energy-efficiency project including led high bay lighting wholesale at the flagship Minneapolis St. Paul International Airport (MSP). Construction was begun this past week on what the agency said is Minnesota's largest solar generation project — a 3-MW (megawatt) plant located atop two parking structures. Moreover, the project will include retrofit of more than 7700 metal-halide fixtures to solid-state lighting (SSL) products.
Rendering of the solar array atop Terminal 1's parking ramp.
"The Metropolitan Airports Commission has worked for decades to operate Minneapolis-St. Paul International Airport as sustainably as possible, investing millions in infrastructure to reduce impacts to soil, water, and air quality, and spending nearly a half-billion dollars on noise mitigation around MSP," said Jeff Hamiel, the Commission's executive director and CEO. "This ambitious new solar energy project will create jobs, reduce the airport’s carbon footprint and save the Airports Commission hundreds of thousands of dollars a year. I want to thank all the public and private entities who have worked with us to make this project possible."
We've recently seen an uptick in projects that combine LED and solar technology. Indeed, we covered a presentation at the February Strategies in Light conference that made the point that energy-efficient LED lighting was making solar generation more viable despite the inherently low efficiency in solar panels.
The project goes beyond lighting to address many angles in energy efficiency. For example, the airport will add 18 charging stations for electric vehicles. Moreover, the airport expects the solar plant to deliver 20% of the airport's energy needs.
Minnesota Governor Mark Dayton pegged the cost of the project at $25.4 million and said the project is evidence of the state's proactive energy efforts in the Minnesota Clean Energy Economy Profile. The profile both documents the state's energy-efficiency efforts to data and identifies opportunities for additional clean energy projects.
"This project will create 250 new jobs, and make our airport one of the most energy-efficient in the world," said Governor Dayton, who enacted a new solar energy standard requiring utilities to produce 1.5% of their electricity from solar power by 2020. "Minnesota’s nation-leading clean energy policies, and projects like this one, have significantly reduced carbon emissions in our state while helping create thousands of new jobs. Today’s announcement offers more proof that clean energy progress and job creation are complementary objectives."
The energy services company (ESCO) Ameresco has been selected to lead the project. Moreover, a number of Minnesota-based organizations will participate including tenKsolar, Thrivent Financial, and Hunt Electric. Apparently Cooper Lighting will supply the SSL fixtures as they were the only lighting company listed as a participant in the project. Utility Xcel Energy is contributing a $2 million grant to the project from their Renewable Development Fund.
"Today, we celebrate a proving ground for renewable innovation in the state of Minnesota — the led high bay light for sale in the state to date," said George Sakellaris, president and CEO of Ameresco. "Ameresco is honored to be a sustainability partner in this innovative project. We applaud the Minneapolis-St. Paul International Airport and its management for its stewardship both in pursuing renewable energy solutions for the airport as well as obtaining public-private financing to support the construction. Ameresco takes pride in contributing to local job creation as part of achieving energy savings and sustainability."
Rendering of the solar array atop Terminal 1's parking ramp.
"The Metropolitan Airports Commission has worked for decades to operate Minneapolis-St. Paul International Airport as sustainably as possible, investing millions in infrastructure to reduce impacts to soil, water, and air quality, and spending nearly a half-billion dollars on noise mitigation around MSP," said Jeff Hamiel, the Commission's executive director and CEO. "This ambitious new solar energy project will create jobs, reduce the airport’s carbon footprint and save the Airports Commission hundreds of thousands of dollars a year. I want to thank all the public and private entities who have worked with us to make this project possible."
We've recently seen an uptick in projects that combine LED and solar technology. Indeed, we covered a presentation at the February Strategies in Light conference that made the point that energy-efficient LED lighting was making solar generation more viable despite the inherently low efficiency in solar panels.
The project goes beyond lighting to address many angles in energy efficiency. For example, the airport will add 18 charging stations for electric vehicles. Moreover, the airport expects the solar plant to deliver 20% of the airport's energy needs.
Minnesota Governor Mark Dayton pegged the cost of the project at $25.4 million and said the project is evidence of the state's proactive energy efforts in the Minnesota Clean Energy Economy Profile. The profile both documents the state's energy-efficiency efforts to data and identifies opportunities for additional clean energy projects.
"This project will create 250 new jobs, and make our airport one of the most energy-efficient in the world," said Governor Dayton, who enacted a new solar energy standard requiring utilities to produce 1.5% of their electricity from solar power by 2020. "Minnesota’s nation-leading clean energy policies, and projects like this one, have significantly reduced carbon emissions in our state while helping create thousands of new jobs. Today’s announcement offers more proof that clean energy progress and job creation are complementary objectives."
The energy services company (ESCO) Ameresco has been selected to lead the project. Moreover, a number of Minnesota-based organizations will participate including tenKsolar, Thrivent Financial, and Hunt Electric. Apparently Cooper Lighting will supply the SSL fixtures as they were the only lighting company listed as a participant in the project. Utility Xcel Energy is contributing a $2 million grant to the project from their Renewable Development Fund.
"Today, we celebrate a proving ground for renewable innovation in the state of Minnesota — the led high bay light for sale in the state to date," said George Sakellaris, president and CEO of Ameresco. "Ameresco is honored to be a sustainability partner in this innovative project. We applaud the Minneapolis-St. Paul International Airport and its management for its stewardship both in pursuing renewable energy solutions for the airport as well as obtaining public-private financing to support the construction. Ameresco takes pride in contributing to local job creation as part of achieving energy savings and sustainability."
Greenvity announces network-enabled controllers for LED lighting applications
Greenvity Communications has announced a family of control modules for intelligent LED-based lighting systems with support for HomePlug powerline communications and ZigBee wireless networks. Solid-state lighting (SSL) product developers can use the modules to quickly prototype led street lights price systems, and to handle early-stage production. Moreover, developers can use the modules as reference designs for high-volume systems that directly integrate Greenvity's microcontroller-based ICs.
The new modules include the GV-Controller, GV-LED, and GV-Sensor products. A GV-Controller serves as the foundation of a smart lighting system and includes Ethernet, Wi-Fi, and Bluetooth support that is bridged to the ZigBee or HomePlug networks. The GV-Controller allows PCs, smartphones, or tablets access to the GV-LED modules that are typically integrated with an LED driver to support on/off control, dimming, and in some cases tunable color. The GV-Sensor is designed to be integrated into a luminaire or into dedicated room sensors and can be used to monitor motion, light levels, and temperature.
All three of the new Greenvity modules are based on the company's Hybrii SOC (system on chip) ICs. Customers can specify the modules with either the GV7011 or GV7013 ICs. Both include an 8-bit Arm9 microcontroller. The former includes support for Ethernet, Wi-Fi, ZigBee, HomePlug, and other networks. The lower-cost GV7013 only includes HomePlug powerline communications support.
HomePlug is a home-networking standard promulgated by the HomePlug Powerline Alliance. The standard allows for data to be transmitted over exiting home AC wiring. The target applications range from networking home PCs to smart-grid and –energy applications.
ZigBee, meanwhile, is becoming a near de facto standard as the wireless network for residential smart lighting systems. For example, the Connected Lighting Alliance has endorsed the use of the ZigBee Light Link standard for home lighting networks.
A number of led street light wholesale are targeting the ZigBee-based lighting segment. For example, Texas Instruments (TI) recently announced a development kit for ZigBee-based lighting including a software stack based on the ZigBee Light Link standard.
The Greenvity module family is targeted at the evolving technology often called the Internet of things in which everyday devices such as appliances are connected and remotely accessible. The company provides customers with basic lighting control and home automation software for free including apps for mobile devices. The customers can add a software layer to customize functionality for the task at hand.
The new modules include the GV-Controller, GV-LED, and GV-Sensor products. A GV-Controller serves as the foundation of a smart lighting system and includes Ethernet, Wi-Fi, and Bluetooth support that is bridged to the ZigBee or HomePlug networks. The GV-Controller allows PCs, smartphones, or tablets access to the GV-LED modules that are typically integrated with an LED driver to support on/off control, dimming, and in some cases tunable color. The GV-Sensor is designed to be integrated into a luminaire or into dedicated room sensors and can be used to monitor motion, light levels, and temperature.
All three of the new Greenvity modules are based on the company's Hybrii SOC (system on chip) ICs. Customers can specify the modules with either the GV7011 or GV7013 ICs. Both include an 8-bit Arm9 microcontroller. The former includes support for Ethernet, Wi-Fi, ZigBee, HomePlug, and other networks. The lower-cost GV7013 only includes HomePlug powerline communications support.
HomePlug is a home-networking standard promulgated by the HomePlug Powerline Alliance. The standard allows for data to be transmitted over exiting home AC wiring. The target applications range from networking home PCs to smart-grid and –energy applications.
ZigBee, meanwhile, is becoming a near de facto standard as the wireless network for residential smart lighting systems. For example, the Connected Lighting Alliance has endorsed the use of the ZigBee Light Link standard for home lighting networks.
A number of led street light wholesale are targeting the ZigBee-based lighting segment. For example, Texas Instruments (TI) recently announced a development kit for ZigBee-based lighting including a software stack based on the ZigBee Light Link standard.
The Greenvity module family is targeted at the evolving technology often called the Internet of things in which everyday devices such as appliances are connected and remotely accessible. The company provides customers with basic lighting control and home automation software for free including apps for mobile devices. The customers can add a software layer to customize functionality for the task at hand.
Exar Releases Enhanced AC Step Driver for LED Lighting Market
Exar Corporation, a leading supplier of high-performance integrated circuits and system solutions, today announced an improved alternating current (AC) step driver for light LED lighting applications. Combined with other iML offerings, the iML8684 provides a complete solution for led high bay lighting wholesale bulb and LED tube applications.
Unlike conventional AC driver solutions which use a single large driver, iML has patented a unique distributed architecture of multiple small, low cost drivers. This solution provides increased flexibility and a lower overall BOM cost as it uses much lower voltage technologies. It also improves heat dissipation as multiple devices are used across the PCB, evenly distributing the thermal load. IML devices remove the need for electrolytic capacitors and inductors that are mandatory for AC-DC driver solutions while delivering lower BOM costs.
The new iML8684 offers improved circuit stability in sub 3-volt AC situations created by TRIAC dimming, resulting in superior light quality at low dimming. This improvement also increases the number of compatible dimmers in both 120VAC and 230VAC countries.
"led high bay light for sale are continuing to listen to our customers in order to provide improved solutions," said Gi-Young Lee, senior vice president of marketing for iML display and light products at Exar. "By improving low-voltage stability we have achieved the widest range of TRIAC dimmer compatibility on the market."
Unlike conventional AC driver solutions which use a single large driver, iML has patented a unique distributed architecture of multiple small, low cost drivers. This solution provides increased flexibility and a lower overall BOM cost as it uses much lower voltage technologies. It also improves heat dissipation as multiple devices are used across the PCB, evenly distributing the thermal load. IML devices remove the need for electrolytic capacitors and inductors that are mandatory for AC-DC driver solutions while delivering lower BOM costs.
The new iML8684 offers improved circuit stability in sub 3-volt AC situations created by TRIAC dimming, resulting in superior light quality at low dimming. This improvement also increases the number of compatible dimmers in both 120VAC and 230VAC countries.
"led high bay light for sale are continuing to listen to our customers in order to provide improved solutions," said Gi-Young Lee, senior vice president of marketing for iML display and light products at Exar. "By improving low-voltage stability we have achieved the widest range of TRIAC dimmer compatibility on the market."
Lead-lighting.com gets major upgrade designed to better serve visitors
The LEDs Magazine staff has rolled out a redesigned website for 2014 that has been optimized to improve the visitor experience. We believe the new site will provide far simpler access to more content on the home page while also allowing visitors to bookmark and directly access specific topic and subtopic areas of interest. The new site also improves access to content such as video, provides visitors with one-click access to related content, and optimizes site navigation.
We'd encourage you to take the new site for a test drive starting on the homepage. Click on the logo in the upper left-hand corner to get to the homepage from anywhere on the site. Our updated header has an improved navigation bar. The top left section gives you easy access to led high bay light supplier Magazine partner sites, where you can find more material relevant to LEDs and lighting, including market research and industry events.
If you haven't already, be sure to subscribe to LEDs Magazine, which is free for qualified subscribers. You can find the subscribe button in the upper right-hand corner. If you'd like to check out past magazine issues, you can access them from this location as well.
The center navigation bar gives you quick access to our most popular content types, including articles, educational webcasts, and information on new products and companies. Be sure to check out our video section in the coming months, as we're currently working on some cool video projects.
The bottom navigation bar gives you quick access to all LEDs Magazine topic centers. This is where you'll find content organized by topics and truly tailored to your interests.
As you explore the rest of the homepage you'll notice a larger font, an easy-to-view layout, and the abundance of images. We're frequently publishing new content, both from our editors and user submissions, so be sure to check back daily to keep up to date with the latest in the LEDs and lighting industry.
Topic centers
After you finish exploring the homepage, navigate to one of our new topic centers. Our topic centers are split up into main topics (which are seen in the bottom navigation bar) and sub-topics (which are seen when you hover over any main topic in the navigation bar). The main topic centers display content from all their sub-topics, while the sub-topics are specific to each listed subject.
Now click on an article. You'll notice that the article pages have been updated with a larger font for easier reading. At the bottom of each article you'll also find sections for related articles, companies, and products. Our cutting-edge algorithms know what story you're reading and will recommend other articles that are similar.
Company press release submission
One of the most unique features of LEDs Magazine is that we allow companies that participate in the LEDs and lighting industries to submit announcements that we display on our site. If you didn't know about this feature, make sure you check it out. Simply hover your mouse over Announcements in the header and click on "Submit Announcement." Your announcement will be reviewed and posted by the editorial team.
If you haven't used LEDs Magazine's Supplier's Directory before, this is a great time to see what it has to offer. Here you'll find information about various companies and products in the industry. You can even submit your own listing to help other users to find your company and enhance your business presence.
Responsive design
We have also taken steps to improve the mobile device experience with a quickly growing number of our users accessing our site from phones and tablets. Rather than a mobile version of our website, which is typically a scaled-back version of the full site that lacks many features, responsive design rearranges the site components — so no matter what device you're using, you have easily viewed access to the entire site. You can see how the site "responds" to your screen size by dragging the edge of the browser window (on a desktop) and noticing how the sections move around. On some PC browsers, you may need to widen the screen for optimum viewing.
This redesign is a culmination of feedback from our users and we'd love to hear what you think. If you have any questions about the new site, please visit the Contact Us page and call or email a member of the team.
If you enjoy led street lighting Manufacturer and want to keep up to date with the latest industry news and views, be sure to subscribe to our newsletters by clicking the Subscribe link at the top right corner of the site.
We'd encourage you to take the new site for a test drive starting on the homepage. Click on the logo in the upper left-hand corner to get to the homepage from anywhere on the site. Our updated header has an improved navigation bar. The top left section gives you easy access to led high bay light supplier Magazine partner sites, where you can find more material relevant to LEDs and lighting, including market research and industry events.
If you haven't already, be sure to subscribe to LEDs Magazine, which is free for qualified subscribers. You can find the subscribe button in the upper right-hand corner. If you'd like to check out past magazine issues, you can access them from this location as well.
The center navigation bar gives you quick access to our most popular content types, including articles, educational webcasts, and information on new products and companies. Be sure to check out our video section in the coming months, as we're currently working on some cool video projects.
The bottom navigation bar gives you quick access to all LEDs Magazine topic centers. This is where you'll find content organized by topics and truly tailored to your interests.
As you explore the rest of the homepage you'll notice a larger font, an easy-to-view layout, and the abundance of images. We're frequently publishing new content, both from our editors and user submissions, so be sure to check back daily to keep up to date with the latest in the LEDs and lighting industry.
Topic centers
After you finish exploring the homepage, navigate to one of our new topic centers. Our topic centers are split up into main topics (which are seen in the bottom navigation bar) and sub-topics (which are seen when you hover over any main topic in the navigation bar). The main topic centers display content from all their sub-topics, while the sub-topics are specific to each listed subject.
Now click on an article. You'll notice that the article pages have been updated with a larger font for easier reading. At the bottom of each article you'll also find sections for related articles, companies, and products. Our cutting-edge algorithms know what story you're reading and will recommend other articles that are similar.
Company press release submission
One of the most unique features of LEDs Magazine is that we allow companies that participate in the LEDs and lighting industries to submit announcements that we display on our site. If you didn't know about this feature, make sure you check it out. Simply hover your mouse over Announcements in the header and click on "Submit Announcement." Your announcement will be reviewed and posted by the editorial team.
If you haven't used LEDs Magazine's Supplier's Directory before, this is a great time to see what it has to offer. Here you'll find information about various companies and products in the industry. You can even submit your own listing to help other users to find your company and enhance your business presence.
Responsive design
We have also taken steps to improve the mobile device experience with a quickly growing number of our users accessing our site from phones and tablets. Rather than a mobile version of our website, which is typically a scaled-back version of the full site that lacks many features, responsive design rearranges the site components — so no matter what device you're using, you have easily viewed access to the entire site. You can see how the site "responds" to your screen size by dragging the edge of the browser window (on a desktop) and noticing how the sections move around. On some PC browsers, you may need to widen the screen for optimum viewing.
This redesign is a culmination of feedback from our users and we'd love to hear what you think. If you have any questions about the new site, please visit the Contact Us page and call or email a member of the team.
If you enjoy led street lighting Manufacturer and want to keep up to date with the latest industry news and views, be sure to subscribe to our newsletters by clicking the Subscribe link at the top right corner of the site.
Par-Force Releases Phosphor LED Grow Light Technology White Paper
To satisfy consumer demand for fresh, affordable produce and other horticultural products throughout the year, growers are increasingly turning to indoor growing operations. Growers are using indoor hydroponics and aquaponics systems that are more efficient in producing year around yields without the threat of droughts, diseases, or nutrient deficiencies from our depleted farm lands. Such indoor operations provide a grower the ability to more precisely control for temperature, humidity, water and lighting. Artificial lighting, is a key component of indoor growing facilities because it is crucial to healthy and rapid plant growth and can impact other aspects of the operation like temperature, space requirements and growth cycles.
Artificial lighting for indoor growers and farmers has never scene a more exciting age for LED grow light potential due to the recent cutting age advancements in buy led high bay lamps output and new phosphor blend tailored wavelengths.
A plant basking under indoor LED grow lights.
Traditionally, artificial lighting has been supplied by high intensity discharge (HID) fixtures with metal halide (MH) and high pressure sodium (HPS) lamps, and to a lesser extent, T5 or fluorescent bulbs all of which were sufficiently economic and readily available.
Naturally, growers continue to search for ways to reduce operating costs while improving growth rates and yields of crops. A new phosphor blend based LED lighting technology is achieving these goals in Asia and is now available to U.S. growers.
Among these traditional light sources, no one type of bulb has satisfied the needs of growers. This is because plants use light to grow with the help of pigments, the most common of which and arguably most important to plant growth is chlorophylls a and b.
Plants have other photosynthetic pigments, known as antenna pigments such as the carotenoids which also absorb light and have a significant role in photosynthesis. The chlorophylls have two light absorption peaks – one in the red region (700nm wavelength) of the light spectrum and the other in the blue region (400 nm wavelength)—the range between these wavelengths is commonly referred to as the photosynthetically active radiation (PAR) range.
Comparing LED and HPS Plant Lighting Systems. For this comparison, intensity and efficiency is expressed in micromole photons per second (μmol/s). Research at universities and applied research stations demonstrated that the rate of photosynthesis is related to the amount of photons emitted between 400 – 700 nm, called ‘Photosynthetic Photon Flux’ (PPF) which is a way of measuring if a light source is suitable for photosynthesis. This is expressed in micromole photons per second (μmol/s). The higher the PPF value per Watt, the more efficient the light source for plant growth. In the table below, PAR FORCE LED lights are the most efficient, providing the highest PPF per watt.
PAR FORCE LED lighting systems are able to provide higher intensity light at comparable power consumption levels because they are constructed with smaller, more efficient .05 milliamp LEDs that provide the intensity of larger two to three milliamp LEDs commonly used in competing products, and do so at lower, more light-quality stable operating temperatures. In addition, PAR FORCE LEDs use a superior combination of a single blue LED and proprietary phosphor coatings to maximize PAR spectrum. These key differences are why PAR FORCE LEDs are rated to provide the highest intensity by the United States Department of Energy. This higher intensity provides higher PPF which translates to increased efficiency at providing PAR. In so doing, PAR FORCE led high bay light for sale are providing larger yields and growth rates for the same energy consumption.
Perhaps most importantly, LED related data is continuing to be amassed by research institutions and proactive commercial growers that show increase growth rates and yields of a variety of commercial crops.
Artificial lighting for indoor growers and farmers has never scene a more exciting age for LED grow light potential due to the recent cutting age advancements in buy led high bay lamps output and new phosphor blend tailored wavelengths.
A plant basking under indoor LED grow lights.
Traditionally, artificial lighting has been supplied by high intensity discharge (HID) fixtures with metal halide (MH) and high pressure sodium (HPS) lamps, and to a lesser extent, T5 or fluorescent bulbs all of which were sufficiently economic and readily available.
Naturally, growers continue to search for ways to reduce operating costs while improving growth rates and yields of crops. A new phosphor blend based LED lighting technology is achieving these goals in Asia and is now available to U.S. growers.
Among these traditional light sources, no one type of bulb has satisfied the needs of growers. This is because plants use light to grow with the help of pigments, the most common of which and arguably most important to plant growth is chlorophylls a and b.
Plants have other photosynthetic pigments, known as antenna pigments such as the carotenoids which also absorb light and have a significant role in photosynthesis. The chlorophylls have two light absorption peaks – one in the red region (700nm wavelength) of the light spectrum and the other in the blue region (400 nm wavelength)—the range between these wavelengths is commonly referred to as the photosynthetically active radiation (PAR) range.
Comparing LED and HPS Plant Lighting Systems. For this comparison, intensity and efficiency is expressed in micromole photons per second (μmol/s). Research at universities and applied research stations demonstrated that the rate of photosynthesis is related to the amount of photons emitted between 400 – 700 nm, called ‘Photosynthetic Photon Flux’ (PPF) which is a way of measuring if a light source is suitable for photosynthesis. This is expressed in micromole photons per second (μmol/s). The higher the PPF value per Watt, the more efficient the light source for plant growth. In the table below, PAR FORCE LED lights are the most efficient, providing the highest PPF per watt.
PAR FORCE LED lighting systems are able to provide higher intensity light at comparable power consumption levels because they are constructed with smaller, more efficient .05 milliamp LEDs that provide the intensity of larger two to three milliamp LEDs commonly used in competing products, and do so at lower, more light-quality stable operating temperatures. In addition, PAR FORCE LEDs use a superior combination of a single blue LED and proprietary phosphor coatings to maximize PAR spectrum. These key differences are why PAR FORCE LEDs are rated to provide the highest intensity by the United States Department of Energy. This higher intensity provides higher PPF which translates to increased efficiency at providing PAR. In so doing, PAR FORCE led high bay light for sale are providing larger yields and growth rates for the same energy consumption.
Perhaps most importantly, LED related data is continuing to be amassed by research institutions and proactive commercial growers that show increase growth rates and yields of a variety of commercial crops.
Finally Light challenges LED lighting with induction replacement lamp
The Finally Light Bulb Company has announced the induction-based Finally replacement lamp due this summer at a retail price below $8.00 for a 60W-equivalent product. The company claims that the lamp more closely mimics incandescent bulbs than do led street lighting Manufacturer or compact-fluorescent (CFL) replacement lamps while still providing considerable energy savings and much longer life relative to legacy incandescent bulbs.
Finally Light challenges LED lighting with induction replacement lamp
Finally calls their technology Acandescence, playing off the incandescent legacy. But while the company describes the approach as new and innovative, in reality the company is simply applying well-known induction technology in a light-bulb form factor.
Induction lighting is closely related to fluorescent technology. In both cases, electrodes stimulate a gas to produce ultraviolet (UV) light. In fluorescent lighting, the electrical energy is passed via conductors into the lamp. In induction lamps, the energy is magnetically coupled to electrodes that are electrically isolated inside the lamp. In either case, phosphor is required to convert the UV photons to usable light.
Induction sources
Induction lighting has been fairly broadly used in outdoor applications and in some industrial indoor applications. Induction has been described as generating a "blob of light," as we covered in an outdoor lighting article. That characteristic has meant that induction fixtures have found some success outdoors in applications such as post-top lighting for pedestrian-centric areas and less so in, say, street lighting where precise beam control is required.
A blob of light, however, can be good match for an application such as an omnidirectional bulb. Indeed, John Goscha, founder and CEO of the Finally Light Bulb Company, asserts that the induction design is the first incandescent alternative to accurately mimic the original in performance and form factor.
Goscha claims that consumers are generally dissatisfied with both CFL and LED lamps including what has become a complex buying process. He notes that some retailers have added concierges in the lighting department to help consumers choose a bulb. Goscha added, "I don’t think that you should have to rely on a concierge to buy a light bulb."
But will the Finally lamp really eliminate the need for consumers to be more educated in the light-bulb shopping process? Goscha said that consumers don’t want to know about CCT, CRI, or lumens.
Simplified shopping?
The Finally lamp has the inherent iconic shape of the Edison lamp without question and a nice omnidirectional beam distribution. Goscha is quick, however, to also tout the warm light produced by the lamp. But in the case of the induction lamps, CCT is a design choice just as it is with LED or CFL lamps. The 60W-equivalent lamp that Finally intends to ship this summer delivers 2700K CCT based on the phosphor used to coat the inner globe of the lamp. And as with LED and CFL lamps, such design choices impact other operational aspects such as the power consumption and the CRI of the lamp.
Moreover, the initial Finally product features a CRI of 83, according to Goscha. Incandescent lamps have a CRI of 100. The initial Finally lamp is also not dimmable. Lack of such a feature isn’t an indictment of the product as many LED and CFL lamps aren’t dimmable, but of the claim that consumers can choose a Finally lamp just as they did an incandescent which is inherently dimmable. Clearly, the Finally lamp is little different from CFL and LED products in that ultimately consumers will need to choose the features that they desire in a lamp.
Compare to LEDs
Still, the question remains as to how the Finally lamp compares to the top LED lamps on the market. The 60W-equivalent Finally lamp is most easily compared to the Cree 60W equivalent lamp. The Finally product delivers 800 lm from 14.5W. The Cree 2700K, 800-lm lamp consumes only 9.5W.
Finally was not willing to discuss the power consumption in detail. But generally induction technology lags LED in efficiency. Moreover, the induction technology requires a significant amount of red phosphor to deliver the red spectrum required for 2700K-CCT light. That red phosphor also generates energy in the infrared spectrum that is lost as heat. LEDs that use much smaller amounts of red phosphor suffer related but far lower losses. Indeed, the Cree TW (TrueWhite) model that delivers 93 CRI uses only 13.5W, still more efficient than the Finally lamp and higher CRI inherently impacts efficiency. Moreover, the Cree lamps are dimmable.
Price will gate sales
Still, the Finally replacement lamp could find a market if the price is right. The lamp is still 75% more efficient than incandescent lamps and projected to last 15,000 hours or 15 times longer than incandescent lamps. The energy efficiency and longevity trail LED lamps but would be more than acceptable in the residential space. Moreover, some consumers will surely choose the iconic look.
We will have to see if Finally can deliver the lamps in production and priced as promised. The 60W-equivalent lamp is due in July at $7.99 with 75W- and 100W-equivalent products due in the fall. Goscha said the company will leverage the incandescent bulb factories that have been shuttered due to lamp efficiency regulations and manufacture the products using the same globes as used in incandescent lamps, presumably resulting in prices below LED products.
The Finally lamps do undercut the market in list price significantly. Cree reduced prices in March but the 60W-equivalent product still sells for $10.97. The Philips Lighting SlimStyle lamp is under $10 but still 20% higher than the projected Finally price.
Without question, the led street light Manufacturer is simper electronically than LED lamps. But the design will be more impacted by phosphor prices given that the dome must be fully coated. Note that the Chinese control of rare-earth elements used in phosphor resulted in a spike in fluorescent tube prices a few years back. But Goscha said the A19 lamps use much less phosphor than, say, a T8 tube. Goscha said the phosphor makes up a "single-digit percentage" of the bill of materials for the Finally lamp.
Goscha also said the company will deliver dimmable lamps down the road. He would not explain how such lamps will operate or when they will ship. But generally fluorescent and induction lighting have been severely limited in terms of fine-grain dimmability.
Finally Light challenges LED lighting with induction replacement lamp
Finally calls their technology Acandescence, playing off the incandescent legacy. But while the company describes the approach as new and innovative, in reality the company is simply applying well-known induction technology in a light-bulb form factor.
Induction lighting is closely related to fluorescent technology. In both cases, electrodes stimulate a gas to produce ultraviolet (UV) light. In fluorescent lighting, the electrical energy is passed via conductors into the lamp. In induction lamps, the energy is magnetically coupled to electrodes that are electrically isolated inside the lamp. In either case, phosphor is required to convert the UV photons to usable light.
Induction sources
Induction lighting has been fairly broadly used in outdoor applications and in some industrial indoor applications. Induction has been described as generating a "blob of light," as we covered in an outdoor lighting article. That characteristic has meant that induction fixtures have found some success outdoors in applications such as post-top lighting for pedestrian-centric areas and less so in, say, street lighting where precise beam control is required.
A blob of light, however, can be good match for an application such as an omnidirectional bulb. Indeed, John Goscha, founder and CEO of the Finally Light Bulb Company, asserts that the induction design is the first incandescent alternative to accurately mimic the original in performance and form factor.
Goscha claims that consumers are generally dissatisfied with both CFL and LED lamps including what has become a complex buying process. He notes that some retailers have added concierges in the lighting department to help consumers choose a bulb. Goscha added, "I don’t think that you should have to rely on a concierge to buy a light bulb."
But will the Finally lamp really eliminate the need for consumers to be more educated in the light-bulb shopping process? Goscha said that consumers don’t want to know about CCT, CRI, or lumens.
Simplified shopping?
The Finally lamp has the inherent iconic shape of the Edison lamp without question and a nice omnidirectional beam distribution. Goscha is quick, however, to also tout the warm light produced by the lamp. But in the case of the induction lamps, CCT is a design choice just as it is with LED or CFL lamps. The 60W-equivalent lamp that Finally intends to ship this summer delivers 2700K CCT based on the phosphor used to coat the inner globe of the lamp. And as with LED and CFL lamps, such design choices impact other operational aspects such as the power consumption and the CRI of the lamp.
Moreover, the initial Finally product features a CRI of 83, according to Goscha. Incandescent lamps have a CRI of 100. The initial Finally lamp is also not dimmable. Lack of such a feature isn’t an indictment of the product as many LED and CFL lamps aren’t dimmable, but of the claim that consumers can choose a Finally lamp just as they did an incandescent which is inherently dimmable. Clearly, the Finally lamp is little different from CFL and LED products in that ultimately consumers will need to choose the features that they desire in a lamp.
Compare to LEDs
Still, the question remains as to how the Finally lamp compares to the top LED lamps on the market. The 60W-equivalent Finally lamp is most easily compared to the Cree 60W equivalent lamp. The Finally product delivers 800 lm from 14.5W. The Cree 2700K, 800-lm lamp consumes only 9.5W.
Finally was not willing to discuss the power consumption in detail. But generally induction technology lags LED in efficiency. Moreover, the induction technology requires a significant amount of red phosphor to deliver the red spectrum required for 2700K-CCT light. That red phosphor also generates energy in the infrared spectrum that is lost as heat. LEDs that use much smaller amounts of red phosphor suffer related but far lower losses. Indeed, the Cree TW (TrueWhite) model that delivers 93 CRI uses only 13.5W, still more efficient than the Finally lamp and higher CRI inherently impacts efficiency. Moreover, the Cree lamps are dimmable.
Price will gate sales
Still, the Finally replacement lamp could find a market if the price is right. The lamp is still 75% more efficient than incandescent lamps and projected to last 15,000 hours or 15 times longer than incandescent lamps. The energy efficiency and longevity trail LED lamps but would be more than acceptable in the residential space. Moreover, some consumers will surely choose the iconic look.
We will have to see if Finally can deliver the lamps in production and priced as promised. The 60W-equivalent lamp is due in July at $7.99 with 75W- and 100W-equivalent products due in the fall. Goscha said the company will leverage the incandescent bulb factories that have been shuttered due to lamp efficiency regulations and manufacture the products using the same globes as used in incandescent lamps, presumably resulting in prices below LED products.
The Finally lamps do undercut the market in list price significantly. Cree reduced prices in March but the 60W-equivalent product still sells for $10.97. The Philips Lighting SlimStyle lamp is under $10 but still 20% higher than the projected Finally price.
Without question, the led street light Manufacturer is simper electronically than LED lamps. But the design will be more impacted by phosphor prices given that the dome must be fully coated. Note that the Chinese control of rare-earth elements used in phosphor resulted in a spike in fluorescent tube prices a few years back. But Goscha said the A19 lamps use much less phosphor than, say, a T8 tube. Goscha said the phosphor makes up a "single-digit percentage" of the bill of materials for the Finally lamp.
Goscha also said the company will deliver dimmable lamps down the road. He would not explain how such lamps will operate or when they will ship. But generally fluorescent and induction lighting have been severely limited in terms of fine-grain dimmability.
Solid-state lighting brings out the true colors of modern healthcare
Color has been found to affect brain activity and hormone production, and to influence a person’s mood and emotions. This can be evidenced by physiological responses such as changes in blood pressure or the heartbeat. For instance, the color red can result in raised blood pressure and a quickened pulse, whereas blue typically has a calming effect.
As early as 1976, Rikard Kuller demonstrated that color and visual patterning affect both the brain's cortex and the body’s nervous system.1 Kuller determined that alpha brain wave activity is altered in reaction to the energy produced by the light carrying color. Then in 1996, Frank H. Mahnke published Color Environment & Human Response2, exploring the effects of color, both emotional and biological responses. led high bay light manufacturers conducted by Lois Swirnhoff using highly saturated colors in room lighting found that blue calmed the senses of the subjects, but the effects of red light were inconclusive.3
The creation of lighting effects, largely enabled by LED lighting, is now used by the medical profession to inspire human alertness or create a more calming environment for patients. The brain’s hypothalamus reacts to color, producing different effects as the wavelength and energy of each color varies.
Core change
As LEDs have made colored lighting more accessible and controllable, many healthcare and medical centers are modifying light distribution, color, or the correlated color temperature (CCT) of white light (from cool to warm) to help patients while improving lighting and energy efficiency.
Gregg Ryberg, director of sales, healthcare, Cree, believes that the move away from a clinical to a welcoming environment is positive. “The healthcare industry is amidst one of the greatest core changes in the last 25 years,” he said, “shifting away from a clinical view to more of a hospitality view. As a result, improving patient satisfaction and wellbeing, while controlling costs, is critical for today’s healthcare providers, with lighting playing a tremendous role.”
He cited how quality of light is essential to create spaces that address clinical and emotional needs. For example, proper lighting distribution can be comforting for patients, while clean, crisp light is needed to help staff perform duties, assess wounds, and diagnose efficiently. “Soft, low-glare lighting can help foster a restful treatment and recovery environment, with a calm, soothing atmosphere for patients and families,” he said. “Less stressed, more comfortable patients tend to have better outcomes and spend less time in the healthcare facility.”
Technology drive
Another trend Ryberg identified is that the acquisition of the latest technology leads to adopting lighting that enhances the ambience of its setting.
One example is the CT (computerized tomography) scanner room at the Princess Alexandra Hospital, Harlow, UK. Superintendent radiographer Suzanne Browne explained the reason for introducing the Philips AmbiScene lighting system at the same time as commissioning a new CT scanner. “Experience shows that medical procedures such as CT scans can make some patients, and particularly children, feel quite anxious. The colored lighting effects in the room help create a more comforting atmosphere… We have found that it helps reduce anxiety levels.” If led high bay light for sale is calm and still during the scan, then the procedure is more likely to succeed. “Since using the new scanner with the new dynamic lighting effects, we have been able to increase the number of successful scans from 25 to about 38 per day,” said Browne.
AmbiScene can be used in retail environments, mixing lamps, luminaires, and LEDs to direct shoppers to parts of a store, but in healthcare it is used to create a comforting environment. The lighting can be changed in color, intensity, or tone by staff using a simple touchpad control system in the observation room (Fig. 1). Variable, colored lighting can meet the needs of a particular situation or be altered at a patient’s request.
As early as 1976, Rikard Kuller demonstrated that color and visual patterning affect both the brain's cortex and the body’s nervous system.1 Kuller determined that alpha brain wave activity is altered in reaction to the energy produced by the light carrying color. Then in 1996, Frank H. Mahnke published Color Environment & Human Response2, exploring the effects of color, both emotional and biological responses. led high bay light manufacturers conducted by Lois Swirnhoff using highly saturated colors in room lighting found that blue calmed the senses of the subjects, but the effects of red light were inconclusive.3
The creation of lighting effects, largely enabled by LED lighting, is now used by the medical profession to inspire human alertness or create a more calming environment for patients. The brain’s hypothalamus reacts to color, producing different effects as the wavelength and energy of each color varies.
Core change
As LEDs have made colored lighting more accessible and controllable, many healthcare and medical centers are modifying light distribution, color, or the correlated color temperature (CCT) of white light (from cool to warm) to help patients while improving lighting and energy efficiency.
Gregg Ryberg, director of sales, healthcare, Cree, believes that the move away from a clinical to a welcoming environment is positive. “The healthcare industry is amidst one of the greatest core changes in the last 25 years,” he said, “shifting away from a clinical view to more of a hospitality view. As a result, improving patient satisfaction and wellbeing, while controlling costs, is critical for today’s healthcare providers, with lighting playing a tremendous role.”
He cited how quality of light is essential to create spaces that address clinical and emotional needs. For example, proper lighting distribution can be comforting for patients, while clean, crisp light is needed to help staff perform duties, assess wounds, and diagnose efficiently. “Soft, low-glare lighting can help foster a restful treatment and recovery environment, with a calm, soothing atmosphere for patients and families,” he said. “Less stressed, more comfortable patients tend to have better outcomes and spend less time in the healthcare facility.”
Technology drive
Another trend Ryberg identified is that the acquisition of the latest technology leads to adopting lighting that enhances the ambience of its setting.
One example is the CT (computerized tomography) scanner room at the Princess Alexandra Hospital, Harlow, UK. Superintendent radiographer Suzanne Browne explained the reason for introducing the Philips AmbiScene lighting system at the same time as commissioning a new CT scanner. “Experience shows that medical procedures such as CT scans can make some patients, and particularly children, feel quite anxious. The colored lighting effects in the room help create a more comforting atmosphere… We have found that it helps reduce anxiety levels.” If led high bay light for sale is calm and still during the scan, then the procedure is more likely to succeed. “Since using the new scanner with the new dynamic lighting effects, we have been able to increase the number of successful scans from 25 to about 38 per day,” said Browne.
AmbiScene can be used in retail environments, mixing lamps, luminaires, and LEDs to direct shoppers to parts of a store, but in healthcare it is used to create a comforting environment. The lighting can be changed in color, intensity, or tone by staff using a simple touchpad control system in the observation room (Fig. 1). Variable, colored lighting can meet the needs of a particular situation or be altered at a patient’s request.
Bridgelux announces Décor series COB LEDs with optimized CRI and GAI performance
Bridgelux has announced the Vero Décor Series Class A chip-on-board (COB) LEDs at the Hong Kong Lighting Fair. The packaged LEDs deliver top performance in terms of CRI and Gamut Area Index (GAI), enabling products based on the LEDs to illuminate white and color items in an ideal manner.
Bridgelux announces Décor series COB LEDs with optimized CRI and GAI performance
led high bay light for sale has partnered with the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute in developing a product line with high GAI performance, a metric developed by the LRC. Indeed, the LRC has developed a loose definition for what it calls Class A Color and the LEDs are being marketed as delivering on the concept.
"Class A Color has been broadly tested and tuned to ensure the most pleasing blend of naturalness and vividness based on subjective human perceptions," said Jean Paul Freyssinier, senior research scientist at the LRC. “A majority (75%) of those tested from around the world agree that Class A Color light sources provide the best color rendering and optimum saturation levels. It’s consistent lighting that won’t disappoint."
Class A Color has three elements. Sources that meet the definition must have CRI above 80 and GAI in the range of 80 to 100. Moreover, sources at 4000K CCT and below should be below the black-body locus to match LRC research with humans that indicate minimal tint at a chromaticity below the locus. The LRC detailed much of the research behind Class A Color in a 2012 Strategies in Light presentation.
The LRC has long argued that the industry needs two metrics to characterize color performance. The researchers say CRI is a measure of light quality whereas GAI measures color saturation and strength. And note that CRI can penalize an over-saturated source despite the fact that applications such as retail may value such characteristics.
Bridgelux will offer the Décor series in 3000K to 4000K CCTs. That is the range where the LRC recommends chromaticity below the black-body locus.
"The launch of our Décor Series Class A LED arrays is a game changer for Bridgelux, our customers, and the industry,” said Brad Bullington, CEO of Bridgelux. "Light has the power to influence how people behave, what they purchase, their productivity, and their mood. Our new human-centric approach harnesses that potential to help our customers create custom light experiences that deliver great aesthetics and a tangible financial impact."
Bridgelux is taking liberties with its use of the term human-centric in describing the new COB LEDs. Human-centric lighting almost always refers to a light source in which the CCT is varied at different times of the day in a manner that may enhance human wellbeing. We recently had an article that discussed that science, which is still developing.
Clearly the Bridgelux products do not meet the prevailing definition of human-centric lighting. Nevertheless, the color performance could prove enticing to humans. And that can lead to improved sales in retail applications.
led street light with solar panel is not the first company to embrace one or more of the Class A concepts, although Bridgelux is the first to use the Class A designator. LED module manufacturer Xicato has been shipping its Vibrant family since mid-2013. Those modules deliver high GAI but Xicato has not indicated performance below the black-body curve. Earlier this year, Philips Lumileds announced the CrispWhite COB LED family that delivers below-the-curve chromaticity, but the company has not offered a GAI rating for the LEDs.
Bridgelux announces Décor series COB LEDs with optimized CRI and GAI performance
led high bay light for sale has partnered with the Lighting Research Center (LRC) at Rensselaer Polytechnic Institute in developing a product line with high GAI performance, a metric developed by the LRC. Indeed, the LRC has developed a loose definition for what it calls Class A Color and the LEDs are being marketed as delivering on the concept.
"Class A Color has been broadly tested and tuned to ensure the most pleasing blend of naturalness and vividness based on subjective human perceptions," said Jean Paul Freyssinier, senior research scientist at the LRC. “A majority (75%) of those tested from around the world agree that Class A Color light sources provide the best color rendering and optimum saturation levels. It’s consistent lighting that won’t disappoint."
Class A Color has three elements. Sources that meet the definition must have CRI above 80 and GAI in the range of 80 to 100. Moreover, sources at 4000K CCT and below should be below the black-body locus to match LRC research with humans that indicate minimal tint at a chromaticity below the locus. The LRC detailed much of the research behind Class A Color in a 2012 Strategies in Light presentation.
The LRC has long argued that the industry needs two metrics to characterize color performance. The researchers say CRI is a measure of light quality whereas GAI measures color saturation and strength. And note that CRI can penalize an over-saturated source despite the fact that applications such as retail may value such characteristics.
Bridgelux will offer the Décor series in 3000K to 4000K CCTs. That is the range where the LRC recommends chromaticity below the black-body locus.
"The launch of our Décor Series Class A LED arrays is a game changer for Bridgelux, our customers, and the industry,” said Brad Bullington, CEO of Bridgelux. "Light has the power to influence how people behave, what they purchase, their productivity, and their mood. Our new human-centric approach harnesses that potential to help our customers create custom light experiences that deliver great aesthetics and a tangible financial impact."
Bridgelux is taking liberties with its use of the term human-centric in describing the new COB LEDs. Human-centric lighting almost always refers to a light source in which the CCT is varied at different times of the day in a manner that may enhance human wellbeing. We recently had an article that discussed that science, which is still developing.
Clearly the Bridgelux products do not meet the prevailing definition of human-centric lighting. Nevertheless, the color performance could prove enticing to humans. And that can lead to improved sales in retail applications.
led street light with solar panel is not the first company to embrace one or more of the Class A concepts, although Bridgelux is the first to use the Class A designator. LED module manufacturer Xicato has been shipping its Vibrant family since mid-2013. Those modules deliver high GAI but Xicato has not indicated performance below the black-body curve. Earlier this year, Philips Lumileds announced the CrispWhite COB LED family that delivers below-the-curve chromaticity, but the company has not offered a GAI rating for the LEDs.
2014年10月28日星期二
Why it was time the invention of the blue LED was recognized for a Nobel Prize
This month, Isamu Akasaki, Hiroshi Amano, and Shuji Nakamura were jointly awarded the Nobel Prize for Physics for the invention of “efficient blue light-emitting diodes (LEDs) which has enabled bright and energy-saving white light sources”.
Why is the creation of the blue led high bay lighting wholesale a significant achievement worth the Nobel Prize? Essentially, these three scientists figured out how to grow gallium nitride, which enables blue LEDs to be produced. When you add red and green LEDs to blue LEDs, or when a blue LED is coated with a phosphor, you create white light. White light made the LED light bulb possible and is the very reason that energy efficient lighting exists today. As the Nobel Committee stated, “Incandescent light bulbs lit the 20th Century; the 21st Century will be lit by LED lamps”.
When you think that nearly 20% of all electricity worldwide is consumed by light bulbs, the invention of solid state lighting is significant. Not only does solid state lighting reduce energy consumption and therefore lower bills, but it opens up the possibility of providing lighting in areas of the world that previously could not afford it. It also has significant environmental and health benefits, most notably resulting from the exclusion of toxic materials needed for other lighting technologies, such as mercury.
On a personal note, in the last several years I met and spoke with Shuji Nakamura of UCSB and Soraa several times at both private functions and conferences, as, at that time, we were both developing different technological approaches to improving light from semi-conductor material. I was struck then by his vision and drive, as well as his soft-spoken and gentle nature. I offer my heartfelt congratulations to Shuji and the other two scientists for finally having their achievements recognized—I know first-hand the difficultly of their feat.
In its own way, this award has given credence to the work that Leapfrog Lighting is doing. We continually strive to provide the best quality of LED lighting at the lowest cost of ownership. We play our part in reducing energy consumption and the amount of waste that ends up in landfills. We bring light to people at an affordable cost. The Nobel Committee, through its award to three LED lighting pioneers, confirmed the high importance of led high bay light for sale and the positive impact it is having on the planet and its people.
Why is the creation of the blue led high bay lighting wholesale a significant achievement worth the Nobel Prize? Essentially, these three scientists figured out how to grow gallium nitride, which enables blue LEDs to be produced. When you add red and green LEDs to blue LEDs, or when a blue LED is coated with a phosphor, you create white light. White light made the LED light bulb possible and is the very reason that energy efficient lighting exists today. As the Nobel Committee stated, “Incandescent light bulbs lit the 20th Century; the 21st Century will be lit by LED lamps”.
When you think that nearly 20% of all electricity worldwide is consumed by light bulbs, the invention of solid state lighting is significant. Not only does solid state lighting reduce energy consumption and therefore lower bills, but it opens up the possibility of providing lighting in areas of the world that previously could not afford it. It also has significant environmental and health benefits, most notably resulting from the exclusion of toxic materials needed for other lighting technologies, such as mercury.
On a personal note, in the last several years I met and spoke with Shuji Nakamura of UCSB and Soraa several times at both private functions and conferences, as, at that time, we were both developing different technological approaches to improving light from semi-conductor material. I was struck then by his vision and drive, as well as his soft-spoken and gentle nature. I offer my heartfelt congratulations to Shuji and the other two scientists for finally having their achievements recognized—I know first-hand the difficultly of their feat.
In its own way, this award has given credence to the work that Leapfrog Lighting is doing. We continually strive to provide the best quality of LED lighting at the lowest cost of ownership. We play our part in reducing energy consumption and the amount of waste that ends up in landfills. We bring light to people at an affordable cost. The Nobel Committee, through its award to three LED lighting pioneers, confirmed the high importance of led high bay light for sale and the positive impact it is having on the planet and its people.
LED Lighting for Parking Garages: Improving Safety and Saving Energy
By now, it may be safe to say that most people who think about lighting in some professional capacity, whether as a store owner, lighting designer, architect, contractor or something else, have been exposed to the general idea that LED lighting is more energy efficient and more cost effective than most alternative types of lighting. Large retailers like IKEA have made the news by announcing they are converting all their stores to LED lighting by 2016 and becoming the first US home furnishing retailer to sell only LED bulbs and lamps*. High-profile cultural institutions like the Louvre Museum in Paris have made the switch to LED. Municipal governments all over North America have been converting their street lighting to buy led high bay lamps in order to take advantage of cost-cutting benefits.
The humble underground parking garage, so important to building management, is a large consumer of expensive energy. Lights are on 24 hours a day for safety. Savvy building managers and property managers are turning to energy-efficient LED lighting, not only to save energy, but to brighten up the environment for safety.
In Toronto, according to the group LightSavers, there are about one-quarter of a million parking garage lighting fixtures burning around the clock, seven days a week, consuming enough energy to power about 20,000 homes. LightSavers, an initiative of the Toronto Atmospheric Fund, has shown in trials that electricity used in that garage lighting can be cut by 50 per cent by switching to LED lighting and by more than 70 per cent when smart lighting controls, such as occupancy sensors, are used as well.
Energy Savings Alone is Not Enough in the Underground Garage
There are many things to consider besides cost effectiveness when lighting a garage: technology, safety, light levels, ease of maintenance. (A good summary discussion of the subject of LED lighting for parking garage can be found here.)
There are many examples of parking authorities all over North America looking to LED lighting as a replacement for the High Pressure Sodium lights commonly used. In 2011, the City of Toronto Community Housing Corporation (TCHC) replaced 140 HPS garage lights with 55W LEDs with built-in occupancy sensor for bi-level dimming—the lights automatically dim when no one is in the area. The switch to LED resulted in an energy consumption reduction of 70 per cent while illuminance exceeded required Municipal Code levels.
The problem of the missing T8 replacement
Until now, though, there has been a large gray area in the emerging LED picture: the need for a reliable, bright, easy-to-install, high-performance LED T8 tube bulb to replace the old standby fluorescent tubes. The market for such a replacement bulb is vast, the size of the market demonstrating the need. According to the US Department of Energy (DOE), there were more than 1 billion fluorescent lights installed throughout North America as of 2010. Only about 1 million—less than 0.1 per cent—had been replaced with LED equivalents at that time.
What’s the problem? Again, turning to the DOE we find that the T8 market is fragmented, because of “blurry” lines between the different LED products that are available and the “substantial variation” among products. Different wiring configurations, luminous intensity distribution, and physical appearance are some of the differences that contribute to the products’ lack of consistency. Lack of consistency makes it difficult for specifiers and for facility managers alike.
New T8 products are meeting the need
In spite of the market confusion, a 2012 led high bay light for sale trial that involved lighting designers, engineers and facility managers found that “dedicated LED troffers are ready to compete with fluorescent troffers in terms of efficacy (lumens per watt) and in many lighting quality issues such as glare, light distribution, visual appearance and color quality.” The LED products in the Caliper test performed “as well as or better than” the fluorescent products. The highest-performing LED T8 lamps had lumen output of 76.5 lumens per watt, compared to a maximum 62.1 from the T8 fluorescent benchmark. Our own experience shows that in 2014, quality LED T8 lamps can now reach up to 100 or 105 lumens per watt, a further improvement.
The humble underground parking garage, so important to building management, is a large consumer of expensive energy. Lights are on 24 hours a day for safety. Savvy building managers and property managers are turning to energy-efficient LED lighting, not only to save energy, but to brighten up the environment for safety.
In Toronto, according to the group LightSavers, there are about one-quarter of a million parking garage lighting fixtures burning around the clock, seven days a week, consuming enough energy to power about 20,000 homes. LightSavers, an initiative of the Toronto Atmospheric Fund, has shown in trials that electricity used in that garage lighting can be cut by 50 per cent by switching to LED lighting and by more than 70 per cent when smart lighting controls, such as occupancy sensors, are used as well.
Energy Savings Alone is Not Enough in the Underground Garage
There are many things to consider besides cost effectiveness when lighting a garage: technology, safety, light levels, ease of maintenance. (A good summary discussion of the subject of LED lighting for parking garage can be found here.)
There are many examples of parking authorities all over North America looking to LED lighting as a replacement for the High Pressure Sodium lights commonly used. In 2011, the City of Toronto Community Housing Corporation (TCHC) replaced 140 HPS garage lights with 55W LEDs with built-in occupancy sensor for bi-level dimming—the lights automatically dim when no one is in the area. The switch to LED resulted in an energy consumption reduction of 70 per cent while illuminance exceeded required Municipal Code levels.
The problem of the missing T8 replacement
Until now, though, there has been a large gray area in the emerging LED picture: the need for a reliable, bright, easy-to-install, high-performance LED T8 tube bulb to replace the old standby fluorescent tubes. The market for such a replacement bulb is vast, the size of the market demonstrating the need. According to the US Department of Energy (DOE), there were more than 1 billion fluorescent lights installed throughout North America as of 2010. Only about 1 million—less than 0.1 per cent—had been replaced with LED equivalents at that time.
What’s the problem? Again, turning to the DOE we find that the T8 market is fragmented, because of “blurry” lines between the different LED products that are available and the “substantial variation” among products. Different wiring configurations, luminous intensity distribution, and physical appearance are some of the differences that contribute to the products’ lack of consistency. Lack of consistency makes it difficult for specifiers and for facility managers alike.
New T8 products are meeting the need
In spite of the market confusion, a 2012 led high bay light for sale trial that involved lighting designers, engineers and facility managers found that “dedicated LED troffers are ready to compete with fluorescent troffers in terms of efficacy (lumens per watt) and in many lighting quality issues such as glare, light distribution, visual appearance and color quality.” The LED products in the Caliper test performed “as well as or better than” the fluorescent products. The highest-performing LED T8 lamps had lumen output of 76.5 lumens per watt, compared to a maximum 62.1 from the T8 fluorescent benchmark. Our own experience shows that in 2014, quality LED T8 lamps can now reach up to 100 or 105 lumens per watt, a further improvement.
New Research Reveals That the Majority of Business Owners Use, or Plan to Use, LED Bulbs, Although Half or Them Delayed Due to Upfront Costs
As an industry, we’ve done a great job, according to a new research poll, educating users on the energy benefits and durability of LED bulbs. We seem to have been less convincing on the issue of upfront cost.
A new survey of 200 business owners and managers revealed that upfront cost is the leading reason for a delay in implementing led high bay light manufacturers in their workplace, even though 81.9 per cent have ultimately installed or plan to install.
Although 81.9 per cent of those surveyed* currently use, or plan to use, LED bulbs, 50.9 per cent of business owners said price was the main reason they had delayed—or are still delaying— implementation.
The actual question asked was, “What is the main reason you delayed implementation of LED light bulbs in your workplace?”
“Upfront costs” was the only significant objection to implementation. Only 5.5 per cent doubted the claims of long life, and another 6.1 per cent doubted the energy savings. Another 19.6 per cent doubted the overall value proposition; 18 per cent were fully convinced.
This shouldn’t surprise anyone in the industry. As an industry, we have to convince users of the overall value proposition. On our website, we use an energy calculator to let users quickly calculate the overall value. They simply enter the number of bulbs, price and a few factors, and the calculator estimates the long-term savings for them.
Clearly, the 81.9 per cent of businesses who have implemented LED, or plan to do so, indicates we’ve collectively made progress as an industry. The main focus for ongoing education for us is really to help business owners and managers get past the upfront costs. While admittedly high, the overall savings are also high.
Just over half (50.9 per cent) of business owners and managers delayed implementation of LED bulbs due to upfront costs. 19.6 per cent indicated they were “not convinced of value.” It appears that the majority of business owners are convinced of the claims of long bulb life and energy savings, a combined total of 11.6 per cent.
Older cohorts were more likely to be convinced of the benefits of LED lighting; 38.9 per cent of respondents 65 years or older stated they were “convinced”, none (0 per cent) didn’t believe in the “energy savings claims” or “claims of long life” and only 27.4 per cent found upfront costs too high. Those aged 55–64 years also trended higher than average for “convinced,” and lower than average on “upfront costs” as an obstacle, at 45 per cent.
The age groups 35–44 and 18–24 were most likely to pick “upfront costs too high” at 62.9 per cent. Both age groups were also less likely to choose “convinced.”
However, higher income cohorts in the study were more likely to choose “upfront costs too high” while lower income cohorts were the least likely. Among $150,000-and-up income earners, 73.3 per cent found “upfront costs too high,” while only 44.5 per cent of $25,000–$49,999 income earners expressed that opinion.
There was some deviation by lifestyle as well, with rural businesses less concerned with upfront costs, urban businesses just under average, but suburban coming it at 58.1 per cent.
The led street lighting Manufacturer were more likely to emphasize “upfront costs too high” while the US South and West were below average on that point. The US South was more likely to choose “not convinced of value” than other regional cohorts.
Males were significantly more likely to be concerned with upfront costs at 54.5 per cent versus female at 41 per cent. Females were more likely to be totally convinced of value at 33.3 per cent, versus only 14.3 per cent for males.
A new survey of 200 business owners and managers revealed that upfront cost is the leading reason for a delay in implementing led high bay light manufacturers in their workplace, even though 81.9 per cent have ultimately installed or plan to install.
Although 81.9 per cent of those surveyed* currently use, or plan to use, LED bulbs, 50.9 per cent of business owners said price was the main reason they had delayed—or are still delaying— implementation.
The actual question asked was, “What is the main reason you delayed implementation of LED light bulbs in your workplace?”
“Upfront costs” was the only significant objection to implementation. Only 5.5 per cent doubted the claims of long life, and another 6.1 per cent doubted the energy savings. Another 19.6 per cent doubted the overall value proposition; 18 per cent were fully convinced.
This shouldn’t surprise anyone in the industry. As an industry, we have to convince users of the overall value proposition. On our website, we use an energy calculator to let users quickly calculate the overall value. They simply enter the number of bulbs, price and a few factors, and the calculator estimates the long-term savings for them.
Clearly, the 81.9 per cent of businesses who have implemented LED, or plan to do so, indicates we’ve collectively made progress as an industry. The main focus for ongoing education for us is really to help business owners and managers get past the upfront costs. While admittedly high, the overall savings are also high.
Just over half (50.9 per cent) of business owners and managers delayed implementation of LED bulbs due to upfront costs. 19.6 per cent indicated they were “not convinced of value.” It appears that the majority of business owners are convinced of the claims of long bulb life and energy savings, a combined total of 11.6 per cent.
Older cohorts were more likely to be convinced of the benefits of LED lighting; 38.9 per cent of respondents 65 years or older stated they were “convinced”, none (0 per cent) didn’t believe in the “energy savings claims” or “claims of long life” and only 27.4 per cent found upfront costs too high. Those aged 55–64 years also trended higher than average for “convinced,” and lower than average on “upfront costs” as an obstacle, at 45 per cent.
The age groups 35–44 and 18–24 were most likely to pick “upfront costs too high” at 62.9 per cent. Both age groups were also less likely to choose “convinced.”
However, higher income cohorts in the study were more likely to choose “upfront costs too high” while lower income cohorts were the least likely. Among $150,000-and-up income earners, 73.3 per cent found “upfront costs too high,” while only 44.5 per cent of $25,000–$49,999 income earners expressed that opinion.
There was some deviation by lifestyle as well, with rural businesses less concerned with upfront costs, urban businesses just under average, but suburban coming it at 58.1 per cent.
The led street lighting Manufacturer were more likely to emphasize “upfront costs too high” while the US South and West were below average on that point. The US South was more likely to choose “not convinced of value” than other regional cohorts.
Males were significantly more likely to be concerned with upfront costs at 54.5 per cent versus female at 41 per cent. Females were more likely to be totally convinced of value at 33.3 per cent, versus only 14.3 per cent for males.
Vantage LED Announces Newest LED Sign Partner
Triangle Sign & Service has joined the growing team of strategic partners throughout the USA at Vantage led street light wholesale, who are working to stay at the forefront of LED sign technology and innovation. Owned by Sinclair Broadcasting, a publicly traded company on the NYSE, Triangle Sign & Service has joined Vantage LEDs Partner Program to help grow Digital Signage locally in the Baltimore, MD area as well as nationally. With this move, Triangle Sign & Service continues a legacy which has been in place since their inception in 1931. Triangle Sign & Service was founded by a team of experienced engineers and retailers who saw an opportunity to be leaders in the growing signage industry in Baltimore, MD.
Major changes have occurred since the founding in 1931. Triangle was always considered a large sign company in Baltimore. MD, but in the 1970s, management determined that being strictly involved in Baltimore would be a long term mistake. A decision was made to go after a national retail market, specifically the high end retailer who wanted a quality product. Major retailers opened multiple stores every year, but each store was unique requiring a change from mass production models to a more custom detail of design and construction.
We have seen substantial changes in the sign industry including computerized LEDs and advanced equipment. Triangle has always strived to be at the forefront of all new developments. states Steve Altshuler, President of Triangle Sign & Service
Avnet Electronics Marketing Americas, a business region of Avnet, Inc. announced the opening of its Chandler, Ariz. lighting lab, enabling customers the ability to test and measure a wide range of LED (light emitting diode) applications. Watch a video showing the features of the newly opened Avnet LightLab.
"The demand for LEDs has reached an explosive growth phase," said George Kelly, technical specialist and LightLab manager, Avnet Electronics Marketing Americas. "Avnet LightLab's capabilities coupled with Avnet's national team of LED-focused illumination engineers ("illumineers"), substantially reduces our customers' design time and provides a means to weigh various design options; ultimately optimizing their end-products' performance and extending their competitive edge."
The Avnet LightLab is a state-of-the-art, 900 square foot facility, equipped with the latest led street lighting fixture suite from Instrument Systems. Designed to measure the key optical, electrical and thermal characteristics of high power LEDs, modules and luminaires, the Avnet LightLab services are offered to qualified Avnet customers. All photometric, radiometric and colormetric testing is conducted in accordance with specifications from the Commission Internationale de l'Eclairage (CIE(TM)), the international commission on light.
Avnet's LightLab supports a broad range of LED applications including general illumination, medical, industrial, transportation, military, signage and security applications. Typical tests include:
Major changes have occurred since the founding in 1931. Triangle was always considered a large sign company in Baltimore. MD, but in the 1970s, management determined that being strictly involved in Baltimore would be a long term mistake. A decision was made to go after a national retail market, specifically the high end retailer who wanted a quality product. Major retailers opened multiple stores every year, but each store was unique requiring a change from mass production models to a more custom detail of design and construction.
We have seen substantial changes in the sign industry including computerized LEDs and advanced equipment. Triangle has always strived to be at the forefront of all new developments. states Steve Altshuler, President of Triangle Sign & Service
Avnet Electronics Marketing Americas, a business region of Avnet, Inc. announced the opening of its Chandler, Ariz. lighting lab, enabling customers the ability to test and measure a wide range of LED (light emitting diode) applications. Watch a video showing the features of the newly opened Avnet LightLab.
"The demand for LEDs has reached an explosive growth phase," said George Kelly, technical specialist and LightLab manager, Avnet Electronics Marketing Americas. "Avnet LightLab's capabilities coupled with Avnet's national team of LED-focused illumination engineers ("illumineers"), substantially reduces our customers' design time and provides a means to weigh various design options; ultimately optimizing their end-products' performance and extending their competitive edge."
The Avnet LightLab is a state-of-the-art, 900 square foot facility, equipped with the latest led street lighting fixture suite from Instrument Systems. Designed to measure the key optical, electrical and thermal characteristics of high power LEDs, modules and luminaires, the Avnet LightLab services are offered to qualified Avnet customers. All photometric, radiometric and colormetric testing is conducted in accordance with specifications from the Commission Internationale de l'Eclairage (CIE(TM)), the international commission on light.
Avnet's LightLab supports a broad range of LED applications including general illumination, medical, industrial, transportation, military, signage and security applications. Typical tests include:
Larson Electronics Magnalight Releases Explosion Proof LED Light for Corrosive Environments
Larson Electronics' Magnalight.com has announced the release of an affordable LED explosion proof LED light fixture designed specifically for use in wet and corrosive locations. Able to withstand the damaging effects of wet and corrosive environments, the HALP- 48-2L-LED explosion proof LED light provides high light output combined easy upgrading capability. Costing less than comparable LED lights with permanently integrated LEDs, these fixtures are ideal for cost conscious operators in the petrochemical and industrial marine industries who require durable and effective lighting solutions that can be easily serviced
The HALP- 48-2L-LED Class 1 Division 2 led street lighting Manufacturer from Magnalight.com is an ideal lighting solution for those in the marine and petrochemical industries who need a Class 1 Division 2 lighting solution that can stand up to the corrosive effects of marine and wet environments. Featuring non-corrosive materials including a glass fiber reinforced polyester housing, poured in cover gasket, stainless steel cover latches, and impact resistant acrylic diffuser, this light is specifically designed for areas where wetness and corrosive marine conditions are problems. These fixtures are equipped with Magnalight's high output LED tube lamps, giving them excellent lumen output and contrasting capability as well as a long 50,000+ hour operating life and high resistance to damage from vibrations and impacts. Since these units are equipped with LEDs, the fixtures contain no ballasts, which helps to make these units light in weight and easier to install and service than integral LED fixtures or old style fluorescent units. Unlike many comparable fixtures which rely on integrated LEDs for their high output, HALP- 48-2L-LED provides a lower cost alternative that can be upgraded and re-lamped as easily as a traditional fixture. Fixtures with integrated LED require the operator to replace the whole unit once the fixture reaches the end of its operational life, while the HALP- 48-2L-LED on the other hand allows operators to simply open the unit and replace the lamps. This easy serviceability also means that operators can upgrade to higher output LED lamps as the technology advances, allowing them to save money while improving lighting effectiveness in the future. These explosion proof light fixtures hold added benefits over integrated fixtures as they are much lighter in weight, and with integrated fixtures costing in excess of $1,000 on average, are considerably more cost effective at less than $700.00 in price. The HALP- 48-2L-LED carries UL Class 1 Division 2, Groups A, B, C, D and UL 1598A Marine Type approvals and is compatible variety of voltages including 120V-60hz 220V-50hz 240V-60hz and 277V-60hz. Magnalight maintains a full inventory of explosion proof lighting solutions, which allows them to provide immediate delivery of these lights, oftentimes with same day shipping if an order is received before 4:00pm CT. HALP- 48-2L-LED is a cost effective lighting solution for operators in hazardous locations with corrosive environments that provides long life and reduced operating costs as well as easy upgrade capability.
"The HALP- 48-2L-LED Class 1 Division 2 led street light wholesale is ideal for hazardous location areas, including rigs." said Rob Bresnahan with Larson Electronics' Magnalight.com. "This hazardous location LED light can be upgraded to higher output LED modules for less than $100 as more powerful LEDs become available."
The HALP- 48-2L-LED Class 1 Division 2 led street lighting Manufacturer from Magnalight.com is an ideal lighting solution for those in the marine and petrochemical industries who need a Class 1 Division 2 lighting solution that can stand up to the corrosive effects of marine and wet environments. Featuring non-corrosive materials including a glass fiber reinforced polyester housing, poured in cover gasket, stainless steel cover latches, and impact resistant acrylic diffuser, this light is specifically designed for areas where wetness and corrosive marine conditions are problems. These fixtures are equipped with Magnalight's high output LED tube lamps, giving them excellent lumen output and contrasting capability as well as a long 50,000+ hour operating life and high resistance to damage from vibrations and impacts. Since these units are equipped with LEDs, the fixtures contain no ballasts, which helps to make these units light in weight and easier to install and service than integral LED fixtures or old style fluorescent units. Unlike many comparable fixtures which rely on integrated LEDs for their high output, HALP- 48-2L-LED provides a lower cost alternative that can be upgraded and re-lamped as easily as a traditional fixture. Fixtures with integrated LED require the operator to replace the whole unit once the fixture reaches the end of its operational life, while the HALP- 48-2L-LED on the other hand allows operators to simply open the unit and replace the lamps. This easy serviceability also means that operators can upgrade to higher output LED lamps as the technology advances, allowing them to save money while improving lighting effectiveness in the future. These explosion proof light fixtures hold added benefits over integrated fixtures as they are much lighter in weight, and with integrated fixtures costing in excess of $1,000 on average, are considerably more cost effective at less than $700.00 in price. The HALP- 48-2L-LED carries UL Class 1 Division 2, Groups A, B, C, D and UL 1598A Marine Type approvals and is compatible variety of voltages including 120V-60hz 220V-50hz 240V-60hz and 277V-60hz. Magnalight maintains a full inventory of explosion proof lighting solutions, which allows them to provide immediate delivery of these lights, oftentimes with same day shipping if an order is received before 4:00pm CT. HALP- 48-2L-LED is a cost effective lighting solution for operators in hazardous locations with corrosive environments that provides long life and reduced operating costs as well as easy upgrade capability.
"The HALP- 48-2L-LED Class 1 Division 2 led street light wholesale is ideal for hazardous location areas, including rigs." said Rob Bresnahan with Larson Electronics' Magnalight.com. "This hazardous location LED light can be upgraded to higher output LED modules for less than $100 as more powerful LEDs become available."
2014年10月27日星期一
Some Tips of How to Buy LED Bay Lights
As LED lights play an increasing role in the daily life these years and it will have a big influence in future.LED lights include led street light wholesale, LED bulbs, LED spot lights, LED flood lights, LED bay lights, and LED panel lights and so on, which is widely use in workshops, factories, stories, toll stations, service stations supermarkets and other places. Therefore, more and more people build the awareness of using LED lamps, but the most significant thing is how to buy a LED bay lights?
Zhongtian Lighting gives some suggestions to help customers know more details about how to choose a LED bay light. At first, people usually should buy LED bay lights in bulk so that it enables the manufacturers to give the lowest price. If someone thinks that it is not necessary to buy so much bay lights for one time, he can share the products with others or make it as the spare parts in future. In addition, if the customers buy it in bulk, the most important thing is to check the quality of the merchandise carefully first, so as to avoid the defective products. It is not only a great loss of money but also a waste of time and efforts. What’s more, compare the performance and other factors of LED bay lights between different companies so as to ensure the products which customers buy are the best ones. Finally, there is no doubt that the cost is a crucial factor for customers buying merchandise and it is the most difficult factor to judge. Customers can deal with it by make a balance of the cost and quality. Customers should seek for the LED bay lights with high cost performance but not the cheapest products.
When buying LED bay lights, customers can pay more attention to these parameters—-physical parameters, optical parameters, electrical parameters, which can demonstrate the details of a bay lights. Such as the rated power, service lifespan, output lumens, light source, color rendering index etc. The people who want to buy a LED bay light will benefit a lot from this.
Zhongtian Lighting gives some suggestions to help customers know more details about how to choose a LED bay light. At first, people usually should buy LED bay lights in bulk so that it enables the manufacturers to give the lowest price. If someone thinks that it is not necessary to buy so much bay lights for one time, he can share the products with others or make it as the spare parts in future. In addition, if the customers buy it in bulk, the most important thing is to check the quality of the merchandise carefully first, so as to avoid the defective products. It is not only a great loss of money but also a waste of time and efforts. What’s more, compare the performance and other factors of LED bay lights between different companies so as to ensure the products which customers buy are the best ones. Finally, there is no doubt that the cost is a crucial factor for customers buying merchandise and it is the most difficult factor to judge. Customers can deal with it by make a balance of the cost and quality. Customers should seek for the LED bay lights with high cost performance but not the cheapest products.
When buying LED bay lights, customers can pay more attention to these parameters—-physical parameters, optical parameters, electrical parameters, which can demonstrate the details of a bay lights. Such as the rated power, service lifespan, output lumens, light source, color rendering index etc. The people who want to buy a LED bay light will benefit a lot from this.
Philips improves access to solar lighting
Royal Philips Electronics announces the Cairo to Cape Town Tour: from late May to July 20, 2010 Philips will travel across Africa to raise awareness for the opportunities of new solar-powered led street light fixture Manufacturer and best in class medical solutions to improve the quality of healthcare in Africa. An estimated 560 million Africans have no effective lighting at night and the demand for effective healthcare solutions that increase access to healthcare in Africa is growing rapidly.
During this 2-month roadshow Philips will meet with relevant stakeholders in 15 countries to present and discuss its simple and effective lighting and healthcare solutions. “As the leading company in health and well-being, Philips plans to serve Africa’s growth potential in terms of partnerships for innovation, solution supply and knowledge sharing, bringing meaningful lighting and healthcare solutions to the African people,” said Gottfried Dutiné, Executive Vice-President and Global Head of Markets & Innovation.
In Africa, it goes dark all year round at about 6.30-7.00 pm and this darkness holds countries back socially and economically. Philips believes that access to sustainable solar lighting has the potential to strengthen Africa’s economic, social, educational and cultural activities in a life-changing way. Solar lighting has the advantage it doesn’t require electricity and thus saves energy and costs. Philips has developed different solar lighting solutions to help Africans extend the day, including a small LED reading light that offers children the chance to do school homework at night or for adults to more easily follow evening classes. These lights are affordable and offer the potential for a major boost in literacy across the continent.
Philips also developed the world's first solar-powered buy led high bay lamps floodlighting solution that enables people with little or no access to electricity to enjoy playing or watching sport long into the night and at the same time increases the safety outdoors. “It is amazing what solar lighting can change for the lives of the people living in these areas. It can strengthen Africa in many transformational ways. It is important that the African people have access to simple and sustainable solutions to build the future,” says Dutch soccer legend Ruud Gullit.
Philips also partners up with The Right To Play foundation, which aims to improve the lives of children in some of the most disadvantaged areas of the world with sport and play. Matthijs Huizing, director of Right To Play Netherlands: “We are pleased to join forces in communicating the power of sport and play for development, health and peace, strengthened by the new opportunities that solar LED lighting offers.”
During this 2-month roadshow Philips will meet with relevant stakeholders in 15 countries to present and discuss its simple and effective lighting and healthcare solutions. “As the leading company in health and well-being, Philips plans to serve Africa’s growth potential in terms of partnerships for innovation, solution supply and knowledge sharing, bringing meaningful lighting and healthcare solutions to the African people,” said Gottfried Dutiné, Executive Vice-President and Global Head of Markets & Innovation.
In Africa, it goes dark all year round at about 6.30-7.00 pm and this darkness holds countries back socially and economically. Philips believes that access to sustainable solar lighting has the potential to strengthen Africa’s economic, social, educational and cultural activities in a life-changing way. Solar lighting has the advantage it doesn’t require electricity and thus saves energy and costs. Philips has developed different solar lighting solutions to help Africans extend the day, including a small LED reading light that offers children the chance to do school homework at night or for adults to more easily follow evening classes. These lights are affordable and offer the potential for a major boost in literacy across the continent.
Philips also developed the world's first solar-powered buy led high bay lamps floodlighting solution that enables people with little or no access to electricity to enjoy playing or watching sport long into the night and at the same time increases the safety outdoors. “It is amazing what solar lighting can change for the lives of the people living in these areas. It can strengthen Africa in many transformational ways. It is important that the African people have access to simple and sustainable solutions to build the future,” says Dutch soccer legend Ruud Gullit.
Philips also partners up with The Right To Play foundation, which aims to improve the lives of children in some of the most disadvantaged areas of the world with sport and play. Matthijs Huizing, director of Right To Play Netherlands: “We are pleased to join forces in communicating the power of sport and play for development, health and peace, strengthened by the new opportunities that solar LED lighting offers.”
Growing LED Sector Dragged Down by Industry Leaders
The light-emitting diode (LED) market has grown in recent years due to the rise in sales of consumer electronics products such as mobile phones and television screens. In addition LEDs are on the verge of overtaking both incandescent and fluorescent light bulbs in terms of use as governments, businesses and consumers seek to curb emissions. The rise in led high bay light price has led to an overcrowded industry and a sudden surge in government-backed Chinese LED makers has eaten into the market shares held by the likes of Cree and Veeco Instruments. The Bedford Report examines the outlook for companies in the semiconductor equipment and materials industry and provides research reports on Cree, Inc. and Veeco Instruments, Inc.
Recently, LED heavyweight Cree pulled itself and many other notable names in the industry down after it warned that revenue for its fiscal third quarter will be well short of previous forecasts. "It has taken longer to work through customer inventories than previously anticipated and pricing was lower than the company had previously forecast," Cree said. Cree claims that LED component demand has improved post the Chinese New Year, but that revenue is below previous targets.
Reflecting on the industry in general, Cree CEO Chuck Swoboda believes the huge increase in chip production to service LED backlighting applications in recent years has put pressure on the rest of the market. Weak demand in backlighting has meant that lots of spare led street light wholesale are now available for other applications.
The Bedford Report releases regular market updates on the semiconductor equipment and materials industry so investors can stay ahead of the crowd and make the best investment decisions to maximize their returns. Take a few minutes to register with us free at and get exclusive access to our numerous analyst reports and industry newsletters.
Veeco is more optimistic. For 2011, the company projected a profit of more than $5 a share, versus the Wall Street consensus of $4.96 a share, as provided by Thomson Reuters. For the financial year 2010, Veeco earned $4.42 per share, a substantial gain from 21 cents a share in the previous year.
Recently, LED heavyweight Cree pulled itself and many other notable names in the industry down after it warned that revenue for its fiscal third quarter will be well short of previous forecasts. "It has taken longer to work through customer inventories than previously anticipated and pricing was lower than the company had previously forecast," Cree said. Cree claims that LED component demand has improved post the Chinese New Year, but that revenue is below previous targets.
Reflecting on the industry in general, Cree CEO Chuck Swoboda believes the huge increase in chip production to service LED backlighting applications in recent years has put pressure on the rest of the market. Weak demand in backlighting has meant that lots of spare led street light wholesale are now available for other applications.
The Bedford Report releases regular market updates on the semiconductor equipment and materials industry so investors can stay ahead of the crowd and make the best investment decisions to maximize their returns. Take a few minutes to register with us free at and get exclusive access to our numerous analyst reports and industry newsletters.
Veeco is more optimistic. For 2011, the company projected a profit of more than $5 a share, versus the Wall Street consensus of $4.96 a share, as provided by Thomson Reuters. For the financial year 2010, Veeco earned $4.42 per share, a substantial gain from 21 cents a share in the previous year.
Cutting Edge Under Cabinet Solutions Hit the Marketplace By Force
Contractors and homeowners alike are lining up to get the latest technology in home lighting. The old ways of lighting under cabinets, work spaces, and task areas are giving way to new LED technology. Daniel Alvarez, co-founder of LED Distributors explains, "The manners in which we light our homes have become a lot more simple, efficient, and stylish in the last two years. We are constantly innovating new ways to incorporate new led high bay light fixture wholesale that help our customers improve their living spaces and save on their electrical costs. Our clients constantly thank us and keep returning! You can't beat that." This week, LED Distributors is launching their new line of fully customizable and beautifully designed LED Under Cabinet Light Bars.
The future of home lighting:LED under cabinet lighting uses 85% less energy than traditional lighting applications. As fluorescent and incandescent lighting become obsolete, new and elegant LED lighting solutions are quickly being introduced. Equipped with top of the line Edison or Cree LEDs, the 2011 LED Under Cabinet Lights are among the brightest and durable of their kind. They come complete with a beautifully brushed silver or black finish, easy-install connectors, and securing brackets. Customers can choose from pure white or warm white to match any decor or mood. Along with the installation guide, all LED Under Cabinet Lights come with a 2-year Warranty.
LED Distributors sell led high bay light price for commercial and residential applications. Their assembly and distribution center is located four miles west of Disneyland in Stanton, California. Even though the company has grown substantially since its creation in 2008, the staff is friendly, knowledgeable and offer superior customer service. LED Distributors have positioned themselves in the forefront of the LED lighting wave by providing fully customizable easy to install LED lighting solutions at affordable prices. They have assisted thousands of customers in their projects by providing how-to and DIY videos on their company website.
The future of home lighting:LED under cabinet lighting uses 85% less energy than traditional lighting applications. As fluorescent and incandescent lighting become obsolete, new and elegant LED lighting solutions are quickly being introduced. Equipped with top of the line Edison or Cree LEDs, the 2011 LED Under Cabinet Lights are among the brightest and durable of their kind. They come complete with a beautifully brushed silver or black finish, easy-install connectors, and securing brackets. Customers can choose from pure white or warm white to match any decor or mood. Along with the installation guide, all LED Under Cabinet Lights come with a 2-year Warranty.
LED Distributors sell led high bay light price for commercial and residential applications. Their assembly and distribution center is located four miles west of Disneyland in Stanton, California. Even though the company has grown substantially since its creation in 2008, the staff is friendly, knowledgeable and offer superior customer service. LED Distributors have positioned themselves in the forefront of the LED lighting wave by providing fully customizable easy to install LED lighting solutions at affordable prices. They have assisted thousands of customers in their projects by providing how-to and DIY videos on their company website.
Hella Supplies Full-LED Lighting Technology for the Audi A6
Hella, a leading supplier of automotive lighting and electronics, is providing an optional full-LED headlamp system with adaptive front lighting for the 2011 Audi A6. Hella's "intelligent" LED lighting technology is one of four headlight systems the company supplies to Audi for the A6. Relying on 64 LEDs to provide light distribution for a variety of driving situations, Hella's system generates light that is considerably closer to actual daylight than light from other systems, improving driver vision during evening hours and increasing overall comfort and safety.
"The Audi A6's sporty appearance is enhanced by led high bay light for sale as well," notes Steffen Pietzonka, vice president of marketing for Hella's automotive lighting group. "Our LED system clearly contributes to the distinctive styling that differentiates the Audi A6 from other luxury cars."
The Audi A6's LED headlamps automatically create light patterns uniquely suited for city, country and highway driving situations, as well as for adverse weather conditions. Settings to reduce glare in fog or heavy rain, for example, provide a broader spectrum of light than traditional fog lamps. Drivers have a choice of four Hella headlight systems on the A6, including a halogen system, static as well as camera-controlled high-intensity discharge (HID) systems and a full-LED system.
Hella's dynamic headlamp-leveling feature is offered with the Audi A6's HID and LED systems. The feature adjusts for changes in headlamp angle caused by braking, rapid acceleration or road conditions to maintain optimal visibility for the driver without blinding oncoming traffic. The Audi A6's HID lighting, in both static and AFS versions, showcases Hella's lighting and electronics expertise as well, Pietzonka adds.
With the company's camera-controlled led street lighting Manufacturer systems, a windshield camera detects oncoming vehicles. The system adapts the shape of the front headlight beams to avoid blinding oncoming traffic, while providing the best possible range of light for all driving conditions. If the road ahead is clear, the system automatically switches to high beam. Wide illumination of the road continues until other vehicles come into view.
"The Audi A6's sporty appearance is enhanced by led high bay light for sale as well," notes Steffen Pietzonka, vice president of marketing for Hella's automotive lighting group. "Our LED system clearly contributes to the distinctive styling that differentiates the Audi A6 from other luxury cars."
The Audi A6's LED headlamps automatically create light patterns uniquely suited for city, country and highway driving situations, as well as for adverse weather conditions. Settings to reduce glare in fog or heavy rain, for example, provide a broader spectrum of light than traditional fog lamps. Drivers have a choice of four Hella headlight systems on the A6, including a halogen system, static as well as camera-controlled high-intensity discharge (HID) systems and a full-LED system.
Hella's dynamic headlamp-leveling feature is offered with the Audi A6's HID and LED systems. The feature adjusts for changes in headlamp angle caused by braking, rapid acceleration or road conditions to maintain optimal visibility for the driver without blinding oncoming traffic. The Audi A6's HID lighting, in both static and AFS versions, showcases Hella's lighting and electronics expertise as well, Pietzonka adds.
With the company's camera-controlled led street lighting Manufacturer systems, a windshield camera detects oncoming vehicles. The system adapts the shape of the front headlight beams to avoid blinding oncoming traffic, while providing the best possible range of light for all driving conditions. If the road ahead is clear, the system automatically switches to high beam. Wide illumination of the road continues until other vehicles come into view.
New alloys key to efficient energy and lighting
A recent advance by Arizona State University researchers in developing nanowires could lead to more efficient photovoltaic cells for generating energy from sunlight, and to better led street light with solar panel that could replace less energy-efficient incandescent light bulbs. Electrical engineers Cun-Zheng Ning and Alian Pan are working to improve quaternary alloy semiconductor nanowire materials. Nanowires are tens of nanometers in diameter and tens of microns in length. Quaternary alloys are made of semiconductors with four elements, often made by alloying two or more compound semiconductors. Semiconductors are the material basis for technologies such as solar cells, high-efficiency LEDs for lighting, and for visible and infrared detectors.
One of the most critical parameters of semiconductors that determine the feasibility for these technologies is the band gap. The band gap of a semiconductor determines, for example, if a given wavelength of sun light is absorbed or left unchanged by the semiconductor in a solar cell. Band gap also determines what color of light an LED emits. To make solar cells more efficient, it's necessary to increase the range of band gaps. Ideally, the highest solar cell efficiency is achieved by having a wide range of band gaps that matches the entire solar spectrum, explains Ning, a professor in the School of Electrical, Computer and Energy Engineering, a part of ASU's Ira A. Fulton Schools of Engineering.
In LED lighting applications, he says, more available band gaps means more colors can be emitted, providing more flexibility in color engineering or color rendering of light. For example, different proportions of red, green and blue colors would mix with different white colors. More flexibility would allow white color to be adjusted to suit various situations, or individual preferences. Similarly, Ning says, detection of different colors requires semiconductors of different band gaps. The more band gaps that are available, the more information can be acquired about an object to be detected. Thus, all of these lighting applications can be improved by having semiconductors with a wide range of band gaps. The researchers say the hurdle is that every manmade or naturally occurring semiconductor has only a specific band gap. One standard way to broaden the range of band gaps is to alloy two or more semiconductors. By adjusting the relative proportion of two semiconductors in an alloy, it's possible to develop new band gaps between those of the two semiconductors. But accomplishing this requires a condition called lattice constant matching, which requires similar inter-atomic spaces between two semiconductors to be grown together.
"This is why we cannot grow alloys of arbitrary compositions to achieve arbitrary band gaps," Ning says. "This lack of available band gaps is one of reasons current solar cell efficiency is low, and why we do not have led street lighting fixture colors that can be adjusted for various situations." In recent attempts to grow semiconductor nanowires with "almost" arbitrary band gaps, the research team led by Ning and Pan, an assistant research professor, have used a new approach to produce an extremely wide range of band gaps.
They alloyed two semiconductors, zinc sulfide (ZnS) and cadmium selenide (CdSe) to produce the quaternary semiconductor alloy ZnCdSSe, which produced continuously varying compositions of elements on a single substrate (a material on which a circuit is formed or fabricated). Ning says this the first time a quaternary semiconductor has been produced in the form of a nanowire or nanoparticle. By controlling the spatial variation of various elements and the temperature of a substrate (called the dual-gradient method), the team produced light emissions that ranged from 350 to 720 nanometers on a single substrate only a few centimeters in size. The color spread across the substrate can be controlled to a large degree, and Ning says he believes this dual-gradient method can be more generally applied to produce other alloy semiconductors or expand the band gap range of these alloys. To explore the use of quaternary alloy materials for making photovoltaic cells more efficient, his team has developed a lateral multi-cell design combined with a dispersive concentrator.
One of the most critical parameters of semiconductors that determine the feasibility for these technologies is the band gap. The band gap of a semiconductor determines, for example, if a given wavelength of sun light is absorbed or left unchanged by the semiconductor in a solar cell. Band gap also determines what color of light an LED emits. To make solar cells more efficient, it's necessary to increase the range of band gaps. Ideally, the highest solar cell efficiency is achieved by having a wide range of band gaps that matches the entire solar spectrum, explains Ning, a professor in the School of Electrical, Computer and Energy Engineering, a part of ASU's Ira A. Fulton Schools of Engineering.
In LED lighting applications, he says, more available band gaps means more colors can be emitted, providing more flexibility in color engineering or color rendering of light. For example, different proportions of red, green and blue colors would mix with different white colors. More flexibility would allow white color to be adjusted to suit various situations, or individual preferences. Similarly, Ning says, detection of different colors requires semiconductors of different band gaps. The more band gaps that are available, the more information can be acquired about an object to be detected. Thus, all of these lighting applications can be improved by having semiconductors with a wide range of band gaps. The researchers say the hurdle is that every manmade or naturally occurring semiconductor has only a specific band gap. One standard way to broaden the range of band gaps is to alloy two or more semiconductors. By adjusting the relative proportion of two semiconductors in an alloy, it's possible to develop new band gaps between those of the two semiconductors. But accomplishing this requires a condition called lattice constant matching, which requires similar inter-atomic spaces between two semiconductors to be grown together.
"This is why we cannot grow alloys of arbitrary compositions to achieve arbitrary band gaps," Ning says. "This lack of available band gaps is one of reasons current solar cell efficiency is low, and why we do not have led street lighting fixture colors that can be adjusted for various situations." In recent attempts to grow semiconductor nanowires with "almost" arbitrary band gaps, the research team led by Ning and Pan, an assistant research professor, have used a new approach to produce an extremely wide range of band gaps.
They alloyed two semiconductors, zinc sulfide (ZnS) and cadmium selenide (CdSe) to produce the quaternary semiconductor alloy ZnCdSSe, which produced continuously varying compositions of elements on a single substrate (a material on which a circuit is formed or fabricated). Ning says this the first time a quaternary semiconductor has been produced in the form of a nanowire or nanoparticle. By controlling the spatial variation of various elements and the temperature of a substrate (called the dual-gradient method), the team produced light emissions that ranged from 350 to 720 nanometers on a single substrate only a few centimeters in size. The color spread across the substrate can be controlled to a large degree, and Ning says he believes this dual-gradient method can be more generally applied to produce other alloy semiconductors or expand the band gap range of these alloys. To explore the use of quaternary alloy materials for making photovoltaic cells more efficient, his team has developed a lateral multi-cell design combined with a dispersive concentrator.
Detailed Development of LED traffic lights
Traffic lights usually lights of red, yellow, and green lights composition used to direct traffic. When the green light to allow vehicles to pass, when the yellow light, has crossed the stop line of vehicles that can remain in use; when the red light vehicular traffic.
History of traffic lights
Early 19th century, in central England city of York, red, green containers represent different identities of women. Among them, the woman in the red dress, said I have to get married, and a woman with green dress is unmarried. Later, the British led street light wholesale in London occurred before the carriage rolled frequent accidents, so people inspired by the red and green dress, December 10, 1868, the first member of the family lights was born on Parliament Square, London, by the time Morality ?? Hart British mechanical design, manufacturing lamppost seven meters high, the body hanging from a red, green and white lanterns - gas traffic lights, this is the first city street lamp lights. In light of the foot, a hand-held pole police arbitrarily affect the color of the belt converter lantern. Later in the center lights mounted on the gas lamp, front it has two red and green glass alternately blocked. Unfortunately, the only available 23 days from the off gas lamp exploded, so a policeman on duty and thus ruin their lives.
Since then, the city's traffic lights were banned. Until 1914, in Cleveland, the United States was the first to restore the traffic lights, but this time is "electric lights." And later in New York and Chicago and other cities, have been re-emergence of the traffic lights.
Appear red yellow and green traffic lights
With the need for the development of various modes of transport and traffic control, the first light veritable three-color light (red, yellow, and green flag) was born in 1918. It is surrounded by three-color circular projector is mounted on a tower fifth Street in New York City, since its birth, the urban traffic greatly improved.
The inventor of the yellow lights of the Hu Ruding, him with "Science Saves the Nation" vision to the United States to study, in the great inventor Thomas Edison as the chairman of the US General Electric Company waiter. One day, he stood in the bustling crossroads waiting for the green signal, when he saw the red light and was about the past, a call to turn the car soon passing, threatened him in a cold sweat. Back to the dormitory, he repeatedly pondering, and finally thought of red, green in the middle plus a yellow light, a reminder of the danger. His suggestion was immediately sure interested parties. So red, yellow, and green lights that is a complete command signal family, throughout the world by land, sea and air transport sector a.
China's first street light
China's first road traffic lights, is in 1928 appeared in Shanghai's British concession.
Traffic lights and transport
Pull the belt from the earliest hand-to-electrical control in the 1950s, and from the use of computer-controlled to a modern electronic timing control, traffic lights constantly updated on the scientific, automation, development and improvement.
Traffic lights are African-American Garrett? Morgan in 1923 invention. Earlier, railway transport has been used to automatically convert light signals for some time. However, because the train is a fixed timetable to single run, but the train is not very easy to stop, so the signal used on the railway is only one command: traffic. Highway traffic lights are not the same, it is largely the responsibility to tell the bus driver to stop the vehicle.
Drive people who do not want to see the stop signal. University of Hawaii psychologist James pointed out, people have a tendency to brake and accelerator with self-esteem interrelated. He said: When drivers see the yellow light, my heart secretly ready to accelerate preparations. If at this time the red light, will soon produce a feeling of disappointment. He intersection called "psychological dynamic area." If his theory holds, this area in Floyd psychology theory should belong to the super-ego (supere go) rather than instinct (id) category.
The new traffic lights can take pictures of people running red lights down. Delinquent drivers will soon receive a ticket. Some lights also have the function of monitoring the vehicle speed.
The first traffic lights appeared in 1868 London, UK. Then the traffic light only red, green and white, the improved, then increase a yellow light, red light means stop, yellow light indicates ready, the green light indicates traffic.
Impact on traffic light color vision
In fact, with these three colors to make traffic signals and human visual function structure and psychological response.
Our retina contains rods and three kinds of cone photoreceptor cells. Rod-shaped cells are particularly sensitive to yellow light, respectively, to red, green, and blue three most sensitive cone cells. Because of this visual structure, people most likely to distinguish between red and green. Although the yellow and blue are easy to distinguish, but because of the eye, blue-sensitive photoreceptor cells less, so to distinguish color, or red, green better. So, what color the traffic light is also a university asked to!
Color also has implications activity (activity), and to the expression of heat or severe, then the strongest red, followed by yellow. There are cooler and quiet green implications. Therefore, people often red for danger, yellow alert, green for safety.
Moreover, since most penetrating red, other colors of light are easily scattered, not easily visible in the fog, and the least likely to be scattered red light, even though the air is relatively low visibility, can easily be seen, accident does not occur. So we use red prohibited.
Relevant laws and regulations
Regulations for the Implementation People's Republic of China on Road Traffic Safety Law
Article 38 lights and non-motor vehicle lights, said:
(A) When the green led street lighting fixture to allow vehicles to pass, but the turning of the vehicle may not hinder the release of the straight vehicles, pedestrians;
(B) when the yellow light, has crossed the stop line of vehicles that can remain in use;
(C) when the red light vehicular traffic.
In non-motorized vehicles are not set lights and crosswalk lights junction, non-motorized and pedestrian traffic shall be expressed in accordance with the vehicle lights.
When the red light, turn right vehicle to be released without prejudice to the vehicle, in the case pedestrians can pass.
Article 39 of the crosswalk lights, said:
(A) When the green light to allow pedestrian crosswalk;
(B) when the red light is prohibited pedestrians entering the crosswalk, but has entered the crosswalk, or you can continue through the centerline of the road to wait.
Article 40 of the driveway lights, said:
(A) When the green arrow lights, permitted by indicating the direction of the vehicle traffic lane;
(B) when the red light or arrow light fork prohibit vehicular traffic lane.
Article 41 indicates the direction of the arrow direction lights to the left, up, right, respectively, turn left, go straight, turn right.
Article 42 flashing warning lights flashing yellow light for sustained, suggesting the vehicle, pay attention to pedestrians when Outlook, confirm safe passage.
Article 43 roads and railway level crossing has two alternately flashing red light or a red light, it means that prohibit vehicles, pedestrians; when the red light is off, allowing the vehicle, pedestrians.
History of traffic lights
Early 19th century, in central England city of York, red, green containers represent different identities of women. Among them, the woman in the red dress, said I have to get married, and a woman with green dress is unmarried. Later, the British led street light wholesale in London occurred before the carriage rolled frequent accidents, so people inspired by the red and green dress, December 10, 1868, the first member of the family lights was born on Parliament Square, London, by the time Morality ?? Hart British mechanical design, manufacturing lamppost seven meters high, the body hanging from a red, green and white lanterns - gas traffic lights, this is the first city street lamp lights. In light of the foot, a hand-held pole police arbitrarily affect the color of the belt converter lantern. Later in the center lights mounted on the gas lamp, front it has two red and green glass alternately blocked. Unfortunately, the only available 23 days from the off gas lamp exploded, so a policeman on duty and thus ruin their lives.
Since then, the city's traffic lights were banned. Until 1914, in Cleveland, the United States was the first to restore the traffic lights, but this time is "electric lights." And later in New York and Chicago and other cities, have been re-emergence of the traffic lights.
Appear red yellow and green traffic lights
With the need for the development of various modes of transport and traffic control, the first light veritable three-color light (red, yellow, and green flag) was born in 1918. It is surrounded by three-color circular projector is mounted on a tower fifth Street in New York City, since its birth, the urban traffic greatly improved.
The inventor of the yellow lights of the Hu Ruding, him with "Science Saves the Nation" vision to the United States to study, in the great inventor Thomas Edison as the chairman of the US General Electric Company waiter. One day, he stood in the bustling crossroads waiting for the green signal, when he saw the red light and was about the past, a call to turn the car soon passing, threatened him in a cold sweat. Back to the dormitory, he repeatedly pondering, and finally thought of red, green in the middle plus a yellow light, a reminder of the danger. His suggestion was immediately sure interested parties. So red, yellow, and green lights that is a complete command signal family, throughout the world by land, sea and air transport sector a.
China's first street light
China's first road traffic lights, is in 1928 appeared in Shanghai's British concession.
Traffic lights and transport
Pull the belt from the earliest hand-to-electrical control in the 1950s, and from the use of computer-controlled to a modern electronic timing control, traffic lights constantly updated on the scientific, automation, development and improvement.
Traffic lights are African-American Garrett? Morgan in 1923 invention. Earlier, railway transport has been used to automatically convert light signals for some time. However, because the train is a fixed timetable to single run, but the train is not very easy to stop, so the signal used on the railway is only one command: traffic. Highway traffic lights are not the same, it is largely the responsibility to tell the bus driver to stop the vehicle.
Drive people who do not want to see the stop signal. University of Hawaii psychologist James pointed out, people have a tendency to brake and accelerator with self-esteem interrelated. He said: When drivers see the yellow light, my heart secretly ready to accelerate preparations. If at this time the red light, will soon produce a feeling of disappointment. He intersection called "psychological dynamic area." If his theory holds, this area in Floyd psychology theory should belong to the super-ego (supere go) rather than instinct (id) category.
The new traffic lights can take pictures of people running red lights down. Delinquent drivers will soon receive a ticket. Some lights also have the function of monitoring the vehicle speed.
The first traffic lights appeared in 1868 London, UK. Then the traffic light only red, green and white, the improved, then increase a yellow light, red light means stop, yellow light indicates ready, the green light indicates traffic.
Impact on traffic light color vision
In fact, with these three colors to make traffic signals and human visual function structure and psychological response.
Our retina contains rods and three kinds of cone photoreceptor cells. Rod-shaped cells are particularly sensitive to yellow light, respectively, to red, green, and blue three most sensitive cone cells. Because of this visual structure, people most likely to distinguish between red and green. Although the yellow and blue are easy to distinguish, but because of the eye, blue-sensitive photoreceptor cells less, so to distinguish color, or red, green better. So, what color the traffic light is also a university asked to!
Color also has implications activity (activity), and to the expression of heat or severe, then the strongest red, followed by yellow. There are cooler and quiet green implications. Therefore, people often red for danger, yellow alert, green for safety.
Moreover, since most penetrating red, other colors of light are easily scattered, not easily visible in the fog, and the least likely to be scattered red light, even though the air is relatively low visibility, can easily be seen, accident does not occur. So we use red prohibited.
Relevant laws and regulations
Regulations for the Implementation People's Republic of China on Road Traffic Safety Law
Article 38 lights and non-motor vehicle lights, said:
(A) When the green led street lighting fixture to allow vehicles to pass, but the turning of the vehicle may not hinder the release of the straight vehicles, pedestrians;
(B) when the yellow light, has crossed the stop line of vehicles that can remain in use;
(C) when the red light vehicular traffic.
In non-motorized vehicles are not set lights and crosswalk lights junction, non-motorized and pedestrian traffic shall be expressed in accordance with the vehicle lights.
When the red light, turn right vehicle to be released without prejudice to the vehicle, in the case pedestrians can pass.
Article 39 of the crosswalk lights, said:
(A) When the green light to allow pedestrian crosswalk;
(B) when the red light is prohibited pedestrians entering the crosswalk, but has entered the crosswalk, or you can continue through the centerline of the road to wait.
Article 40 of the driveway lights, said:
(A) When the green arrow lights, permitted by indicating the direction of the vehicle traffic lane;
(B) when the red light or arrow light fork prohibit vehicular traffic lane.
Article 41 indicates the direction of the arrow direction lights to the left, up, right, respectively, turn left, go straight, turn right.
Article 42 flashing warning lights flashing yellow light for sustained, suggesting the vehicle, pay attention to pedestrians when Outlook, confirm safe passage.
Article 43 roads and railway level crossing has two alternately flashing red light or a red light, it means that prohibit vehicles, pedestrians; when the red light is off, allowing the vehicle, pedestrians.
The development prospects and application status of Solar LED lighting
Concerns about security of energy supply and climate change with the development of human society, has gradually been increasing emphasis on the world, and each began to use various means to sustainable energy development. Indirectly promote the rapid development of renewable energy technologies and worldwide industry, such as the annual growth rate of photovoltaic power, wind power, etc. in more than 20%. Although renewable led high bay light for sale has now realized diversification of energy sources, but coal and crude oil is still hot international energy sector.
As of the first half of 2014, China's hydropower installed capacity reached 290 million kilowatts, wind power capacity has reached 83 million kilowatts, solar power installed capacity reached 22 million kilowatts. Among them, the renewable energy power generation capacity of more than 30% of total power generation capacity of renewable energy generating capacity of more than 20% of total electricity generation of electricity. Can be used as the main energy renewable energy development has become a hot international energy sector, has been widespread concern in many countries of the world.
Green has taken a big step
With the increasingly scarce resources of the earth, the investment cost basis of energy rising, safety and pollution risks are everywhere, solar energy as an "inexhaustible" security, environmental protection and new energy increasingly the more attention. At the same time, but also with the development of solar photovoltaic technology and progress, solar lighting products in the dual advantages of green energy, solar lights, garden lights, lawn and other applications has gradually scale solar power development in the field has increasingly improved street lighting .
As a green LED light source, high luminous efficiency, low power consumption, long life, high security and reliability features. LED single tube power from 0.03 to 0.06 watts, DC-driven, single-tube drive voltage of 1.5 to 3.5 volts, the current 15 to 18 mA, reaction speed, can operate at high frequencies. The same lighting effects, the power consumption is one millionth of incandescent bulbs, fluorescent tubes half, Japan is estimated as the use of fluorescent light efficiency is even higher than twice the LED replacement of incandescent and half in Japan fluorescent lamps. Annual savings equivalent to 6 billion liters of crude oil. Lights on the bridge parapet cases, the same effect a fluorescent lamp more than 40 watts, while the use of LED only 8 watts of power each, and can be color changes. With economic development, China's lighting electricity will greatly increase the research application of green energy-efficient lighting, will more and more attention. On this basis, it was the beginning of the LED light source associated with solar energy, hoping to allow night lighting with solar energy during the day and reserve seamlessly connected. This will be a big step in the green.
Currently, led street light with solar panel consumes about 20% of the overall electricity consumption, electricity consumption is an important way to reduce lighting energy savings. To achieve this goal, the industry has developed a variety of energy-efficient lighting fixtures, and have achieved some results. However, from the "green light" requirement is also far, the development and application of more efficient, reliable, safe, durable, new light is imperative.
Solar LED lighting as a cold light source products with higher cost, green, safe, reliable, stable quality, long life, easy installation and maintenance, etc., can be widely used in green lighting, road lighting, advertising light box lighting, urban landscape modeling lighting and home lighting system, solar LED lighting, but a higher one-time investment is the bottleneck in its development.
As of the first half of 2014, China's hydropower installed capacity reached 290 million kilowatts, wind power capacity has reached 83 million kilowatts, solar power installed capacity reached 22 million kilowatts. Among them, the renewable energy power generation capacity of more than 30% of total power generation capacity of renewable energy generating capacity of more than 20% of total electricity generation of electricity. Can be used as the main energy renewable energy development has become a hot international energy sector, has been widespread concern in many countries of the world.
Green has taken a big step
With the increasingly scarce resources of the earth, the investment cost basis of energy rising, safety and pollution risks are everywhere, solar energy as an "inexhaustible" security, environmental protection and new energy increasingly the more attention. At the same time, but also with the development of solar photovoltaic technology and progress, solar lighting products in the dual advantages of green energy, solar lights, garden lights, lawn and other applications has gradually scale solar power development in the field has increasingly improved street lighting .
As a green LED light source, high luminous efficiency, low power consumption, long life, high security and reliability features. LED single tube power from 0.03 to 0.06 watts, DC-driven, single-tube drive voltage of 1.5 to 3.5 volts, the current 15 to 18 mA, reaction speed, can operate at high frequencies. The same lighting effects, the power consumption is one millionth of incandescent bulbs, fluorescent tubes half, Japan is estimated as the use of fluorescent light efficiency is even higher than twice the LED replacement of incandescent and half in Japan fluorescent lamps. Annual savings equivalent to 6 billion liters of crude oil. Lights on the bridge parapet cases, the same effect a fluorescent lamp more than 40 watts, while the use of LED only 8 watts of power each, and can be color changes. With economic development, China's lighting electricity will greatly increase the research application of green energy-efficient lighting, will more and more attention. On this basis, it was the beginning of the LED light source associated with solar energy, hoping to allow night lighting with solar energy during the day and reserve seamlessly connected. This will be a big step in the green.
Currently, led street light with solar panel consumes about 20% of the overall electricity consumption, electricity consumption is an important way to reduce lighting energy savings. To achieve this goal, the industry has developed a variety of energy-efficient lighting fixtures, and have achieved some results. However, from the "green light" requirement is also far, the development and application of more efficient, reliable, safe, durable, new light is imperative.
Solar LED lighting as a cold light source products with higher cost, green, safe, reliable, stable quality, long life, easy installation and maintenance, etc., can be widely used in green lighting, road lighting, advertising light box lighting, urban landscape modeling lighting and home lighting system, solar LED lighting, but a higher one-time investment is the bottleneck in its development.
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