The reporter learned from the Chinese Academy of Sciences that on November 11th, the development of a large-scale high-precision diffraction grating scribing system undertaken by Changchun Optomechanics Co., Ltd. (hereinafter referred to as a grating project) was successfully accepted. This indicates that the relevant technologies for the manufacture of large-area high-precision gratings in China have reached the international level, ending the situation in China that is subject to human control in the field of high-precision and large-scale grating manufacturing.
Diffraction gratings, which are precision optical components, have important applications in many fields such as information storage and new energy sources. According to Tang Yuguo, researcher of grating project and researcher of Changchun Institute of Light Industry, Chinese Academy of Sciences, the large grating area can obtain high light collection rate and resolution capability, and the grating can achieve better signal-to-noise ratio with high precision, and at the same time, the grating can be “larger†and “perfectâ€. "It is a worldwide problem. With the development of science and technology, large-area high-precision mid-echelon gratings have become “short boards†that restrict the development of technologies in related fields in China.
In 2008, under the joint support of the Chinese Academy of Sciences and the Ministry of Finance, the Changchun Institute of Optics and Lights began a grating project. The goal was to develop a large-scale, high-precision diffraction grating scribing machine with the world's largest scratched area and advanced technology.
Raster scribing machine is the master machine for making gratings. Because it is difficult to adjust the precision of parts processing, the operation guarantees the high environmental requirements and is known as the "king of precision machinery." Tang Yuguo said that almost all the key components of the grating sculpting machine developed by the project have hit the “limit†level of the world. During the development, the project team broke through a series of core high-precision parts manufacturing technology.
According to Tang Yuguo, after eight years of hard work, his project team has conquered 18 key technologies and achieved nine innovative results, developed a large-scale high-precision grating characterization system, and successfully developed an area of ​​400mm × The world's largest mid-echelon grating is 500mm. The assessment experts who conducted the project acceptance on that day believed that both the grating characterization system and the grating had reached the technical specifications of the project implementation plan and agreed that the project passed the acceptance. (China Youth Daily, China Youth Online reporter Qiu Chenhui)
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