Internationally, LED light pollution is generally divided into three categories, namely, white light pollution, artificial daylight and IPL pollution. At present, China's only white pollution in the glass curtain wall has the relevant provisions of artificial daylight and IPL pollution is not the relevant provisions. However, taking into account the IPL pollution does cause people to feel unwell, so in the design of LED display screen to take into account the display screen light pollution prevention and control issues.
First, the system can automatically adjust the brightness adjustment system
We know that day and night, different time and location of the environment changes greatly, if the LED display brightness is greater than 60% of the ambient light we obviously feel the eyes are not suited, that is causing the light pollution. Through the outdoor brightness collection system, at any time of the ambient brightness acquisition. Display control system by receiving the system data automatically converted through the software for the environment of broadcast brightness.
Second, multi-level gray-scale correction technology
Ordinary display system uses 8bit color display level, so that in some low gray and color over the blunt color. Also will cause the color light not to adapt. The new LED large screen control system with 14bit color display level, greatly improved the color of the hardness in the excessive. So that people can feel when watching soft colors. To avoid people's discomfort of light.
Third, the rational choice of installation location and display area of the rational planning
Viewing distance and viewing angle with the display area has an experience of planning, and image studies in the display viewing distance and viewing angle on the specific design requirements. In the design of the display should be as much as possible to meet the design requirements, reasonable planning.
Fourth, play the content selection and design
LED large screen is the public media, there are public interest category, advertising category, such as instructions. We choose to play the content, must be consistent with the public request, to avoid refusing to see the psychological. This is also an important aspect of the prevention and treatment of display light pollution.
LED diode itself is a green light source, although the cluster in the use of large LED display giant screen because the design considerations and application requirements do cause a certain degree of IPL pollution, but this contradiction is inevitable, and Can not be completely eradicated. Only the use of technical means and policies and regulations to minimize IPL pollution, coordination of the needs of advertisers and the public's viewing psychology. At the same time, we also see relative to today's neon and white light box advertising, LED display light pollution is already greatly reduced. And LED electronic display also has the advantages of energy-saving and rich colors, is bound to fully replace the neon outdoor lighting, information display.