Abstract
One of the most important concerns of humankind today is environmental issues and the health of living organisms. Optical pollution is related to the use of light sources in unnecessary cases or the use of light sources that are disproportionate to the location of use. The optical pollution not only affects the health of human species, but also the ecology and biology of plant communities, animals, natural habitats, and the loss of energy and the global economy. The presence of light at night is one of the most prominent signs of human habitation in the ecosystem. The estimated cost of the ill effects of optical pollution in the United States is estimated at $ 7 billion annually. The local atmospheric pollution of the atmosphere is caused by light waves, reflections of artificial light of objects on the surface of the earth, or surfaces such as streets, billboards, or interiors of buildings. The results of this study show that the intensity of lighting at night and in the 6th municipality of Tehran varies from 5 to 124 luxuries. The highest light intensity is observed in Valiasr Square and Haft Tir Square with the lowest light intensity on the North Kargar Street. In Iran, more than 20 percent of the country's electricity consumption (about 50 billion kWh) is used annually for lighting. There are simple ways to combat light pollution, although some of the actions can only be done with the help of official authorities, community members can help to overcome this problem. Optical pollution is one of the newest environmental issues that are important in many aspects of ecological, ecological, economic, and social security.
