Research on Urban Light Pollution and Its Prevention

Abstract

With the fast development of urbanization, a large number of landmark buildings have been built, most of which are provided with glass curtain walls which can produce light pollution when they are projected with natural lights and lights from human resources. Nowadays, light pollution has become increasingly serious, which poses a great threat to human production, living and people's physical and mental health. This paper makes a summary of urban light pollution, discusses the causes of its production, points out its influence on human physical health and finally puts forward specific measures from the angle of physical prevention control for preventing urban light prevention. 1. The concept and status quo of light pollution Light pollution, in broad sense, is the general term for the negative effects of visible light, ultraviolet radiation and infrared radiation on human health and human living environment. There are three kinds of light pollution in the world, which is white light pollution, artificial daylight and color light pollution.. For example glass curtain wall of illumination and reflection and refraction, building or building landscape lighting, road and traffic lighting, square or site lighting, advertising signs lighting and garden landscape lighting the escape of astigmatism, plant growth and ecological environment produced negative effects are known as light pollution (1) . Since the last century 70's scholars have proposed the concept of light pollution, and now the more 40 years. Excessive nighttime lighting and glass curtain wall make the phenomenon of light pollution increasingly serious in the city. Examples of light pollution everywhere in our daily life. My house in the vicinity of 200 meters is the local famous lobster street, in order to attract customers, and establish a lot of billboards night of nearby residents, produced the serious light pollution, hindered the sleep quality of residents. Light pollution during the day also occurs. Modern urban construction uses a large number of reflective of the decorative material, the strong sunlight reflected by the sun may produce glare. The glare pollution is the main form of the light pollution in the city, and is one of the most important factors that affect the quality of the lighting (2) . Light pollution in developed countries are more common, according to the relevant statistics, the German light pollution in growth rate of 6%, Italy and Japan is currently 10% and 12%, about 99% by light pollution of life of people in Europe and the United States (excluding Alaska and Hawaii) (3) . According to the satellite images of the map, we can see the light pollution situation of the United States.Especially in the eastern coastal areas of the United States, light pollution is very serious. From day to night. The light pollution is always present in our life, threatening human health.. Because of the influence of light pollution to the normal life order, the research on the mechanism of light pollution is getting deeper and deeper.