What suggestions are there to reduce light pollution?

Strengthen urban planning management, rationally arrange light sources, strengthen the management of advertising lights and neon lights, prohibit the use of high-power and strong light sources, control the use of high-power civil laser devices, and restrict the use of materials with high reflection coefficient.

Shutters or double curtains can be installed indoors, which can be adjusted according to the intensity of light; Planting trees, flowers and turf around the complex to improve and adjust the lighting environment, etc.

Formulate technical standards for landscape lighting. Few people in our country realize the harm of light pollution, so there is no unified standard in this respect. With the rapid development of urban night landscape construction in China, it is necessary to formulate technical standards for landscape lighting as soon as possible. It is suggested that the state formulate technical specifications and corresponding laws and regulations related to light pollution.

Promote the use of new energy-saving light sources. Most night lighting in China is not only energy-saving, but also very dazzling and easy to make people tired. It is suggested to promote the use of new energy-saving light sources.

It is suggested that ND filter or CPL filter be used to filter out light pollution during photography. It is suggested to use UHC filter to filter out urban light damage and sky glow when shooting stars.