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Here are 7 solutions to LED display light pollution

 - Here are 7 solutions to LED display light pollution

LED display screen prices will fluctuate in 2022. As a result of the overall economic environment, the LED display screen industry will also experience a more challenging market situation. Meanwhile, industry competition is expected to become more fierce. With the advantages of high brightness and high refresh rate of LED electronic display screen, it has become the leader in the field display screen category, but light pollution caused by the high brightness of LED electronic display screen is often criticized by everyone. Sostron has developed some methods for setting safety brightness parameters and protecting LED electronic displays from light pollution.

LED display light pollution: 7 solutions

1.The brightness of the LED screen should be adjusted based on the ambient lighting

The purpose of brightness adjustment is to adjust the brightness of the entire LED screen in response to the ambient light intensity, so that the LED electronic display screen looks clear, bright, and not obtrusive. There are not many companies or users who use this skill, but most LED display screen manufacturers in China have realized it. In one sense, there is a lack of accurate and easy-to-use environmental brightness inspection equipment on the market, and in another sense, there is a lack of reference conditioning standards for LED electronic displays.

A scale of brightness that can be seen clearly is 80-8000 candelas per square meter when the human eye has become accustomed to an ambient brightness of 800 candelas per square meter. In order to see clearly any display content beyond this brightness scale, the human eye must gradually adjust its ability and habits. When the brightness of the outdoor environment is 5000 candela per square meter, the display device that is easy to watch is roughly 500-50000 candela per square meter. For the human eye to be able to clearly identify mobile phone content of 60 candela per square meter in this environment, it needs to adjust for a few seconds before gradually adjusting. That’s why.

This theory can be used to establish the planning standard for LED electronic display brightness adjustment. To make the gray scale comfortable for human eyes, adjust it according to the ambient brightness. At night, the maximum brightness of the electronic screen should be less than 10 times that of the ambient light.

2.Distribution and direction of light on a standard LED display

We should try to consider the rationality of LED light distribution, and make the light energy output by LEDs evenly distributed in all directions within the scope of the visual point of view, in order to prevent the strong light of LEDs with small viewing angles from directly shining into the human eye. Direction and scale of LED light irradiation should be limited to reduce the pollution caused by LED electronic display screens.

3.Frequency standard for electronic screens

In order to prevent viewers from feeling uncomfortable due to flashes of the LED electronic display screen, manufacturers should plan the display screen in strict compliance with the requirements of the LED electronic display screen standard, and the output frequency of the display screen should meet those requirements.

4.The LED display screen operation manual should include explicit safety measures

User manuals for LED display screens should include precautions for use, explanations of how to adjust the brightness accurately, and information about the potential damage to human eyes caused by long-term direct viewing. The LED display screen should be closed when the brightness active conditioning equipment is defective.

When encountering eye-catching LED display screen in the dark environment, the self-protection method should be: Don’t look directly at the LED display screen for a long time or carefully identify the details of the image on the LED display screen, and try to prevent bright spots from forming on the fundus of the eye once the LED has gathered through both eyes and burned it.

 - Here are 7 solutions to LED display light pollution

5.Measures to protect LED display screens during the planning and production process

The LED display screen will be touched more frequently by planning and production personnel than by users. The overload operation of LEDs must be tested during the planning and production process. In view of this, the planning and production personnel should pay more attention to and adopt special protection measures for LED display screen planning and production processes.

In order to be able to view the details of LED display screens at a close distance, relevant staff should wear black sunglasses with brightness attenuation of four to eight times during the production and test of LED outdoor high-brightness LED display screens. The relevant staff must wear black sunglasses with a brightness attenuation of 2-4 times during the production and testing of indoor LED display screens. Especially those who test the LED display screen in a dark environment should pay more attention to safety precautions. Black sunglasses are required before looking directly at the LED display screen.

6.The blue output of a standard LED electronic display

Depending on the perception characteristics of the human eye, different wavelengths of light are perceived differently by the eye, and only brightness can accurately reflect the intensity of light. Measurement of the safety energy of visible light can be more accurate when the irradiation amount is used as the target. In order to determine whether the output intensity of blue light will damage both eyes, the measured value of irradiance measuring equipment should be used rather than the brightness perception of blue light in both eyes. Under satisfactory display conditions, LED display manufacturers and users should reduce the blue light output component of LED electronic screens.

 - Here are 7 solutions to LED display light pollution

7.Introducing advanced technology

LED display screen brightness changes significantly over time and at different locations. In the event that the display’s brightness output exceeds 60% of the ambient brightness, it will cause discomfort to the human eye and light pollution. LED display screens should be equipped with an outdoor brightness acquisition system that collects the ambient brightness in real time and transmits it to the central control room. Based on the received data information, the central control room will calculate the most appropriate output brightness for the display screen, and adjust it accordingly.

Multi-level gray correction technology should also be introduced into LED display screens to reduce the discomfort caused by the harsh color transition of 8-bit color screens. Using multi-level grayscale correction technology, the original display system can be upgraded to 14 bits for soft color transitions and reduced light stimulation for the human eye.

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