How to Solve the Problem of Light Pollution of LED Display Screen

At present, the light pollution of LED display screen is generally divided into three categories, namely white light pollution, artificial day pollution and color light pollution. At present, China only has relevant regulations on glass curtain wall in white light pollution, and there are no relevant regulations on artificial day and color light pollution. However, considering that color light pollution does cause people's discomfort, the prevention and control of light pollution of LED display screen should be considered when designing LED display screen.

1、 The brightness adjustment system with automatic adjustment is adopted

We know that the brightness of the environment changes greatly at different times and places during the day and night. If the playing brightness of the LED display screen is greater than 60% of the ambient brightness, we obviously feel that our eyes are not adapted, that is to say, it causes light pollution to people. Collect the ambient brightness at any time through the outdoor brightness acquisition system. The display level control system automatically converts the broadcast brightness suitable for the environment through receiving system data and software.

2、 Multilevel gray correction technology

The ordinary display system adopts the 8-bit color display level, so that the color is stiff at some low gray levels and color transitions. It will also cause the maladjustment of color light. The new LED large screen control system adopts 14bit color display level, which greatly improves the hardness of color in transition. So that people can feel soft color when watching, so as to avoid people's discomfort to light.

3、 Reasonable selection of installation position and reasonable planning of display area

There is an empirical planning between viewing distance, viewing angle and display area. At the same time, image research has specific design requirements on viewing distance and viewing angle of display screen. When designing the display screen, it should meet the design requirements as much as possible and make reasonable planning.

4、 Selection and design of playback content

LED large screen is a public media, including public welfare, advertising, instructions, etc. When we choose the broadcast content, we must reach an agreement with the public requirements to avoid refusing to watch. This is also an important aspect of preventing and controlling light pollution of display screen.

LED diode itself is a green light source. Although the design considerations and application requirements do cause a certain degree of color light pollution on the large-scale LED display screen used in cluster, this contradiction is inevitable and cannot be completely eradicated. Only technical means, policies and regulations can be adopted to minimize color light pollution and coordinate the needs of advertisers and people's viewing psychology. At the same time, we also see that compared with today's neon and white light box advertising, the light pollution of LED display screen has been greatly reduced. Moreover, LED electronic display also has the advantages of energy saving and rich color, which will comprehensively replace the outdoor lighting and information display of neon lights.

How to Solve the Problem of Light Pollution of LED Display Screen 1

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