LED Display Engineers Analyze The Pollution And Prevention Of Display Screen
Generally speaking, the light pollution of LED displays is divided into 3 categories: white pollution, artificial daylight and colored light pollution. At present, there are only relevant regulations for glass curtain wall in white light pollution in China, but there are no relevant regulations for artificial daytime and color light pollution. However, considering that the color pollution does cause people to feel uncomfortable, it is necessary to take into account the prevention and control of the light pollution in the design of the LED display screen.
First, adopt a system of brightness adjustment which can be adjusted automatically and automatically.
We know that the brightness of the environment varies greatly in different time and place during the day and night. If the brightness of the LED display is more than 60% of the brightness of the environment, we will obviously feel the eye's maladjustment, that is to say, it causes light pollution to people. The ambient brightness is collected at any time through outdoor brightness acquisition system. The display control system automatically converts the broadcast brightness suitable for the environment through the software of the receiving system.
Two, multi-level grayscale correction technology
Ordinary display system uses 8 bit color display level, so that the color is stiff in some low gray level and over-color areas. It will also cause the color light to be inappropriate. The new LED large screen control system uses 14 bit color display level, which greatly improves the color hardness in excess. It makes people feel soft when watching. Avoid people's sense of discomfort with light.
Three. Reasonable choice of installation location and reasonable planning of display area.
There is an empirical planning for viewing distance and viewing angle and display area. At the same time, image research has specific design requirements for viewing distance and viewing angle of display screen. In the design of the display screen, we should satisfy the design requirements as far as possible and plan reasonably.
Four. Selection and design of playback content
LED large screen is the public media, there are public interest, advertising, instructing and so on. When we choose to play the content, we must reach a consensus with the public and avoid refusing to read. This is also an important aspect of preventing and controlling the light pollution of the display screen.
LED diode itself is a green light source. Although the design considerations and application requirements of large LED display screen used in cluster mode do cause a certain degree of color pollution, this contradiction is inevitable and can not be completely eradicated. Only by adopting technical means and policies and regulations can we minimize the pollution of color light and coordinate the needs of advertisers and the viewing psychology of the public. At the same time, we also see that compared with neon and white light box advertisements, the light pollution of LED display has been greatly reduced. Moreover, the LED electronic display screen also has the advantages of energy saving and rich color. It will replace the neon lights outdoors lighting and information display in an all-round way.