Fabrication of 1.8m standard spherical mirror

Jun Yu; Shidong Shen; Junhe Pan; Yijiang Mao; Yongji Mu; Mingyong Hu

doi:10.1117/12.977931

15 October 2012 Fabrication of 1.8m standard spherical mirror

Jun Yu, Shidong Shen, Junhe Pan, Yijiang Mao, Yongji Mu, Mingyong Hu

Proceedings Volume 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes; 84151A (2012) https://doi.org/10.1117/12.977931
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

Ritchey-Common test of the large flatness is an effective method, which requires a larger aperture standard spherical mirror. It’s very difficult for manufacture of large-aperture spherical mirror in the area of optical fabrication. The producing technology of the large-aperture standard spherical mirror with aperture of 1.8m is mainly stated in this paper. The solutions to solve the problems during manufacture are discussed, and the attentions during production are concluded. To offset the gravity effect and ensure the surface deformation satisfy the design requirements, the mechanic support structure including hammer and floating support of spherical mirror are illustrated in brief. At last, the analysis and data of measurement given by 4D interferometer satisfy the technical indicators.

Citation Download Citation

Jun Yu, Shidong Shen, Junhe Pan, Yijiang Mao, Yongji Mu, and Mingyong Hu "Fabrication of 1.8m standard spherical mirror", Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 84151A (15 October 2012); https://doi.org/10.1117/12.977931

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