"The industry in the semiconductor lighting industry should calm down, consider the problem should be rational, reduce a little blindness, add a little scientific and rational," Chen Yansheng, chairman of the China Lighting Association, said on the 19th.
At present, semiconductor lighting is a hot industry, which is mainly reflected in several aspects. First, governments at all levels pay more attention to it. Relevant departments have listed semiconductor lighting as a key industry, and have introduced preferential policies such as land, and the development of semiconductor lighting has not been reduced. Second, there are many companies involved in the semiconductor lighting industry. Some traditional lighting companies or semiconductor companies are involved in semiconductor lighting. In addition, many companies not related to semiconductors and lighting have also stepped in. Third, venture capital funds have many interventions, including both overseas and domestic venture capital funds, and believe that semiconductor lighting is a good investment area. Fourth, the news media also pay more attention to the semiconductor lighting industry.
Chen Yansheng believes that the semiconductor lighting industry is concerned about it is a good thing, but should also think about how to make the industry healthy. People in the industry should think calmly and rationally, and broadly understand the development trends and development status of foreign countries in the field of application, and combine them with the domestic situation. Taking street lamps as an example, in the domestic lighting application field in recent years, street lamps have been surging, and the number of enterprises producing LED street lamps has even exceeded the number of enterprises producing traditional street lamps. Because the current street lights are mainly driven by local governments, there are cases where street lighting companies are not facing the market but facing local governments. "From the perspective of government support, the government should be more about formulating policies to provide a good environment for research and development and attracting investment," said Chen Yansheng.
Chen Yansheng said that the current development of domestic street lamps is not very satisfactory. From the perspective of the international market, in the context of the phasing out of incandescent lamps, the market for some alternatives to incandescent lamps in indoor lighting is very broad. These products are market-oriented, and the application environment is less difficult than street lamps. Chen Yansheng also said that how to face the future development of the industry and how the government and enterprises intervene in the industry need to seriously consider and hope that the industry can develop healthily.
Cylindrical lens is generally used to focus the incident light on the line or change the aspect ratio of the image. It is usually linear imaging, which can control the direction of the beam.
The cylindrical lens has a cylindrical surface, which can focus the incident light on a certain dimension and stretch the image. The focal length of the cylindrical lens can be negative or positive, which is suitable for laser line generation or deformation beam shaping to cyclize the laser output.
Compared with the general spherical lens, the production of cylindrical lens will be very difficult. We should reasonably select materials, pay attention to the texture, bubbles, impurities, uniformity and other characteristics of materials, and pay attention to the control of product specifications and quality, such as scratches, dents, gloss and high-quality grinding technology.
Cylindrical Lens,Convex Cylindrical Lens,Double Convex Cylindrical Lens,Concave Cylindrical Lens
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