How to Reduce the Light Pollution of LED Electronic Screen
LED electronic screen have swiftly evolved and have now largely supplanted conventional billboards. It has rapidly become the preferred category of outdoor advertising screens thanks to the benefits of LED electronic panels with high brightness and faster refresh rate. However, the light pollution created by the excessive brightness of the LED video wall panels is something to be wary of. We have carefully compiled certain ways to ensure safety brightness parameters for LED electronic display screens to reduce light pollution as much as possible.
Use a Self-Adjusting Luminance-Regulating System
We understand that the brightness of the surroundings varies dramatically from day to night, season to season, and location to location. Our eyes will feel very uncomfortable if the LED display luminance is 60% higher than the ambient brightness. In other words, we are polluted by the screen. The outside luminance acquisition system continues to gather ambient luminance data, which is used by the software of the display control system to calculate the appropriate screen luminance. According to research, when human eyes are used to an ambient brightness of 800cd per square meter, the luminance range that human eyes can see is between 80 and 8000cd per square meter. If the luminance of an object exceeds the range, the eyes require several seconds to adjust slowly.
Currently Used Luminance Adjustment Standard
The intense light pollution created by outdoor displays is too bright and impacts the lives of the neighboring residents. The relevant authorities should issue LED display luminance adjustment requirements to increase light pollution management. The owner of the LED display is needed to actively regulate the luminance output of the display based on the ambient luminance, and high-brightness output in the dark is prohibited.
Make Use of the Multilevel Grayscale Correction Method
The color depth of standard LED displays is 8bit. Therefore the low grey level hues and color transition zones appear stiff. This also causes color light to be misaligned. On the other hand, the control mechanism of contemporary LED displays has a 14-bit color depth, which considerably enhances color transition. It subdues colors and prevents individuals from feeling uneasy when looking at the screen.
Blue-Ray Production Should Be Reduced
Different light wavelengths are seen differently by human eyes. Because the complicated human perception of light cannot be measured using “brightness,” the irradiance index can be used as a criterion for safe, visible light energy. Human sentiments toward blue-ray cannot be used as the main criterion for assessing the influence of light on human eyes. Irradiance measuring equipment should be implemented, and data should be collected to respond to the impact of blue light output intensity on visual perception. Producers should limit blue-ray output to avoid harming human eyes while maintaining screen display functions.
Appropriate Installation Location and Screen Area Planning
An experience-oriented approach should be developed based on the relationship between viewing distance, field of view, and screen area. Meanwhile, image analysis has resulted in precise design criteria for viewing distance and viewing angle. LED displays should be reasonably designed, and those standards should be met to the greatest extent possible.
Light Distribution Control
Controlling light pollution caused by LED displays requires a careful arrangement of the light from the screen. To avoid hard light in a specific location, the light emitted by an LED display should be distributed equally across the optical field. It necessitates rigorous limitations on the direction and scale of light exposure during manufacturing.
Finally, as a type of light source, LED displays inherently cause light safety issues and light pollution during operation. Based on a full examination of its light safety concern, we should take reasonable and practicable steps to reduce light pollution created by LED displays to successfully prevent LED displays from causing harm to human bodies. As a result, it can help increase the application range of LED displays while protecting our health.