In recent years, LED electronic display along with the notification to carry out, LED electronic screen application areas more widely, by virtue of the LED electronic screen brightness, high refresh rate and other advantages, agility becomes apparent screen category leader in the field, but just light pollution is often criticized as being of everyone's high-brightness LED electronic display constituted. In order to prevent light pollution is very good, especially in Jiangsu brightly colored electronic compiled some security for LED electronic display brightness parameter setting methods and security measures.
(1) LED screen brightness according to ambient brightness adjustment
The primary intent is to adjust the brightness according to ambient light intensity, the entire screen to adjust led street lighting Manufacturer, the LED electronic display looks both bright and not garish clarity. Most domestic manufacturers now produce LED electronic display to achieve this functionality, but the real good use of the skills of the company and the user is not much, on the one hand, the lack of accurate and easy to use environment brightness inspection equipment on the market, on the other hand , LED electronic display professional lack of conditioning for reference standards.
When the human eye accustomed to the brightness of 800 candelas per square meter after the environment, can see the brightness scale is 80-8000 candela per square meter. Beyond the apparent brightness of any content of this scale are the needs of the human eye best talent conditioning habits, and gradually see. For example, in 5000 candela per square meter outdoor light conditions, the brightness of the scale of the device for easy viewing appeared roughly 500-50000 candela per square meter, in this environment, if you want to identify a clear 60 candelas per square meter of mobile content on demand ability of the human eye and gradually accustomed to trying to recuperate for a few seconds, that is the truth.
In accordance with this theory, be able to establish the LED electronic display brightness conditioning approach planning standards. According to the environmental brightness to make the gray scale falls comfortably within the appropriate size of the human eye to watch. Especially at night, the largest electronic screen brightness should be less than 10 times the ambient brightness.
Contact ambient brightness and apparent brightness output between the best equipment
Day 24 hours from dawn to midnight ambient brightness and contrast should change the curve (one-sided feelings of) LED electronic display brightness settings best curve. Seen from the test results, one day change in the brightness of the outdoor environment is very significant, sunny location, when the brightness of the brightest and darkest time of the brightness of up to 30,000 to 1 ratio. Corresponding LED electronic display brightness setting change is beyond imagination. When the night environment is set to 60cd LED electronic display LED screen will feel satisfied with the light, but the day at noon, even 5000-6000cd will not light. Near to 100 times the difference between light and dark.
Because there is no standard constraints, many outdoor LED electronic display to show a very loud night brightness to the surrounding environment constitute a serious light pollution to the surrounding residents invisible damage. Advocates quickly establish professional standards, corporate behavior bondage, forced brightness conditioning equipment company equipment. LED electronic display in the application process, it should be in accordance with professional standards, according to the ambient brightness LED electronic screen change automatically adjust the output level of brightness in dark environments to stop high-brightness LED electronic display output.
(2) the standard blue LED electronic display output
The human eye is not the same as the wavelength of light perceived to be different, because according to the human eyes perceive brightness characteristic parameters, just not accurately reflect the intensity of light with brightness. With the amount of radiation energy as a visible security measure targets more accurately reflect the effect of light on the eyes of the dose. Irradiance measurements should be used metering equipment, rather than eyes feel brightness of blue light, the blue light output intensity as the interpretation is not constituted injury would binocular according. LED electronic display manufacturers to produce and use shall appear under satisfactory conditions, reducing the output component of the blue LED electronic screen.
(3) Standard LED electronic display of light spread and direction
Should try to consider the LED light spread rationality, so that the light energy in the visible LED output viewpoint scale spread evenly in all directions, to prevent direct glare LED small perspective of the human eye. Together, should be limited to LED light irradiation direction and size, reduce LED electronic display on the surrounding environment pollution.
(4) the standard output frequency electronic screen
LED electronic display manufacturers should be strictly in accordance with the standard LED electronic display screen to show demand planning, appeared satisfied with the standard screen screen output frequency needs to prevent shine because the screen to the viewer a sense of discomfort.
(5) appear in the LED screen using manual expressly safe way
LED screen appeared in the user's manual should indicate the use of attention to matters described accurately show screen brightness LED conditioning methods, as well as long-term look into the LED screen to show the damage to the human eye might be constructed. When the brightness automatically adjust equipment problems, should adopt the approach may be closed manually conditioning LED screen appeared.
When confronted with garish LED screen appeared in the dark environment, self-protection measures should be, do not look directly at the long-term LED screen may appear to show picture detail carefully identify LED screen, LED try to prevent the gathering through the eyes bright spots in the eyes constitution , burns the retina.
(6) LED screen show planning, production processes protective measures
Planning, production staff will touch more frequently than users appear LED screen. Demand test LED overload condition in the planning, production process. Thus, planning, production personnel with a simple LED light exposure, should pay attention to and adopt the special led street light wholesale show planning, production processes protective measures.
LED high brightness LED outdoor screen appears during the production and testing, the staff should wear light attenuation black sunglasses 4-8 times, to be able to show a close watch LED screen detail. Indoor LED screen appeared in the production and testing process, the staff are required to wear light attenuation 2-4 times the black sunglasses.
Especially in the dark environment for staff LED screen quiz show, but also to pay attention to security, it is necessary to wear black sunglasses before we can look into the LED screen appeared.
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