2013年6月8日星期六

The classification of the LED products


Classification many LED products, we simply look at classification. LED light color under the light tube, LED tube features a smooth, luminous tube structure, luminous intensity and operating current, the chip materials, function and other standards have different classification methods. Following is a brief first six classification methods.
1, according to the LED highbay light color classification based on different LED light color can be divided into red, orange, green (subdivided green, standard green and pure green), blue and so on. Also, some light-emitting diodes with 2 or 3 kinds of color chips. According to the light emitting diode at the doped or non-doped scattering agent, colored or colorless, the various colors of light-emitting diodes can be divided into colored, transparent, colorless and transparent, colored and colorless scattering scattering four types.
2, according to the classification luminous tube features a smooth arc tube according to the smooth characteristics of different, can be divided into the round lights, side lights, rectangular, surface-emitting tube, lateral pipe, surface mount miniature tubes. Divided by the diameter circular lamp φ2mm, φ4.4mm, φ5mm, φ8mm, φ10mm and φ20mm so on. Foreign usually referred to as a light emitting diode φ3mm T-1; the φ5mm is designated as T-1 (3/4); the φ4.4mm is designated as T-1 (1/4). By the half-value angle size can be estimated round luminous intensity angular distribution. From the angular distribution of light intensity to be divided into three categories: (1) high directivity. Generally pointed epoxy package, or package with a metal reflector cavity, and does not add scattering agent. Half-value angle of 5 ° ~ 20 ° or less, with a high directivity, can be used for local illumination light source or the light detector associated to form an automatic detection system. (2) standard. Typically used for light, and its half-value angle of 20 ° ~ 45 °. (3) the scattering type. This indicator is a larger perspective, the half angle of 45 ° ~ 90 ° or more, a large amount of scattering agent.

3, according to the classification based on the structure of light-emitting diode light-emitting diode structure can be divided into full epoxy encapsulation, epoxy encapsulated metal base, ceramic base epoxy packaging and glass packaging and so on.
4, according to the current classification luminous intensity and luminous intensity and work under the current, can be divided into ordinary brightness LED (light intensity <10mcd), high-brightness LED highbay light (10 ~ 100mcd) and ultra-high brightness LED (light emitting intensity> 100mcd). General LED operating current to a few dozen mA mA, while the low-current LED operating current below 2mA (the same brightness and ordinary light tube).
5: Press the power points: a low-power LED (0.04-0.08W), the power LED (0.1-0.5W), high power LED (1-500W), as technology continues to develop, LED power bigger and bigger .
6: Press Package points:  the SMD (SMT) and DIP (DIP)

More info you can visit:www.lead-lighting.com

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