It only needs to illuminate the horizontal surface of the lamp edge downward or install a lampshade, so that the light does not directly illuminate the sky, and the light only illuminates the places that need to be illuminated, which can solve the problem of large Part of the light source problem. From a model city, borrowing mirrors to brighten the lights During this trip to the United States, the author's team visited Joshua Tree National Park, Saguaro National Park, and Grand Canyon National Park. The lamps and lanterns all meet the requirements of low light pollution, and the lampshade or the edge of the lamp face down horizontally, and a low-brightness orange light source is used (Figure 1).
fetch (13) Image source: provided by the author Image Manipulation Service Figure 1: Street lights in the United States. (Photo by Liu Zhian) In addition, the team also observed the large and small cities they passed, including Los Angeles, Phoenix, Tucson, Flagstaff Town and Kanab. This is the standard set by the United States, and it is worth learning from Taiwan. What's even more amazing is that in small towns near the Dark Sky Park, in addition to street lamps, street lamps, and outdoor lights in residential homes that follow low light pollution requirements, even gas stations, signboards in large supermarkets, parking lots, or McDonald's, 7-11.
The signboard lights of the company are all low-brightness and lampshade lighting, which really shows the responsible attitude and demeanor of advanced countries towards the environment. It really makes people ask themselves in their hearts: "Can we do this in Taiwan?" From the Hehuan Mountain Dark Sky Park, to see the light pollution control in Taiwan After returning to China, with the support of the Nantou County Government, the team actively arranged to invite members of the International Dark Space Association to visit Taiwan, and invited them to visit the site of the Hehuan Mountain Dark Space Supply Institute's scheduled site survey, and gave the team suggestions for improvement. Hehuan Mountain is an indicator.