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How to effectively solve the light pollution of LED display?

There are obviously different brightness of LED display in different periods and different locations. Once the brightness output of the display exceeds 60% of the ambient brightness, it will cause discomfort to the human eye and produce light pollution. Therefore, the LED display should be equipped with an outdoor brightness sense system to receive the ambient brightness then as the basis for brightness adjustment.

Methods to reduce light pollution of LED displays

Minimize blue light output in LED displays

Light of different wavelengths will bring different visual perceptions to the human eye. Due to the complexity of human eye perception, it is difficult to reflect the human eye’s perception of light through the measurement standard of brightness. Therefore, the irradiation amount indicator can be as a standard for judging the safe energy range of visible light. 

When measuring the effect of light on the human eye, we cannot rely solely on the human eye’s perception of the brightness of blue light. Instead, we must introduce irradiance measurement equipment and use the data measured by the measurement equipment to objectively reflect the impact of blue light output intensity on visual perception.Top LED display manufacturers like Doitvision can appropriately reduce the blue light output to avoid discomfort to the human eye.

Effectively control the light dispersion of LED display 

Reasonably arrange the light of the LED display and evenly distribute the light energy output by the display within the visible range of the human eye to avoid local glare problems on the display. Therefore, when producing LED displays, the direction and scale of light irradiation must be strictly limited in order to effectively control light pollution from LED displays.

Automatically adjust brightness according to the brightness of the environment

According to the ambient light intensity of the LED screen, the overall brightness of the LED display is adjusted to ensure the clarity of the LED screen while avoiding dazzling and eye-catching negative visual experiences. Investigation and research show that if the human eye is accustomed to an ambient brightness of 800 cd per square meter, the brightness that the human eye can see clearly is 80~8,000 cd per square meter. 

If the brightness exceeds this range, the human eye must adjust for several seconds before it can gradually see clearly. Therefore, the LED display must rely on the environment to adjust the brightness, and introduce environmental brightness monitoring equipment to provide a reliable basis for brightness adjustment, then adjust to a range that is comfortable for human eyes. During the night, the brightness of the display should be controlled to less than 10 times the ambient brightness.

Improve LED display performance and quality

In order to ensure the performance of LED displays, brightness detection in indoor and outdoor environments should be strengthened. During the indoor inspection process, people should wear black sunglasses with brightness attenuation of 2 to 4 times to observe whether there are any problems with the details of the LED display at a close range. 

During the outdoor inspection process, people must wear black sunglasses with brightness attenuation of 4 to 8 times. Especially when conducting inspections in a dark environment, workers must wear safety protective tools to prevent workers from being exposed to strong light.

Safety protection instruction

In the instruction manual of the LED display, mark safety precautions, focusing on the correct method of adjusting the brightness of the LED display, and the possible harm caused by looking directly at the display for a long time. If there is an operational failure in the automatic adjustment system for display brightness, manual adjustment can be used to adjust the brightness. 

At the same time, it is also necessary to popularize light pollution safety protection measures to the public and enhance the public’s self-protection ability. For example, you cannot look directly at the display for a long time, try to avoid focusing your eyes on the details on the display, and avoid visual bright spots caused by LEDs gathering. 

Advanced outdoor LED screens from Doitvision

Doitvision’s Kite Series Outdoor LED display

Kite Series outdoor LED display is the latest high brightness, energy saving, high contrast ratio LED display launched by DOITVISION. This outdoor LED display cost is very competitive among similar types and it is very suitable for medium-sized outdoor billboards or wall-mounted outdoor advertising even if in direct sunlight.


· Rich pixel pitch options: There are 6.4mm/8mm/10mm pitch available. 

· Integration design: the integration of the power and signal as one cable & connector.

· Screw-free module removal, and installation without cabinet frame available. 

· High brightness, high contrast and energy-saving

· Front and rear maintenance design


The above is a guide about How to effectively solve the light pollution of LED displays. If you are interested in purchasing LED display, you can directly contact us. We can provide you with more information.

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Jack Reuben Fletcher

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