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Proceedings Paper

Study on the calculation and application for asphericity of rectangle off-axis aspherics
Author(s): Jun-feng Li; Bin Xuan; Peng Wang; Xiao-ping Chen; Hong Zhang; Jing-jiang Xie; Shu-mei Song
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Paper Abstract

Asphericity which affects the manufacturing process and the grinding quantity is an important parameter of optical aspherics. In this paper, the approximation, the least square fitting, wavefront aberration, sag methods are given for the calculation of optical asphericity. The effects of different definitions of optical asphericity are analysed to optimize the process of manufacture. A sag method is presented to solve the best-fit sphere and asphericity for an off-aixs aspheric mirror with a rectangle aperture of 180mm×145mm, and polishing quantity and distribution plots are given. The optical manufacturing and testing technology for different choices of best-fit spheres and asphericity are described and analyzed. Therefore, proper definition of optical asphericity which is useful to manufacturing is very important for optical fabrication and test.

Paper Details

Date Published: 22 May 2009
PDF: 4 pages
Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 728221 (22 May 2009); doi: 10.1117/12.830895
Show Author Affiliations
Jun-feng Li, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Graduate School of the Chinese Academy of Sciences (China)
Bin Xuan, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Graduate School of the Chinese Academy of Sciences (China)
Peng Wang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Graduate School of the Chinese Academy of Sciences (China)
Xiao-ping Chen, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Graduate School of the Chinese Academy of Sciences (China)
Hong Zhang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Jing-jiang Xie, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Shu-mei Song, Changchun Institute of Optics, Fine Mechanics and Physics (China)


Published in SPIE Proceedings Vol. 7282:
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; John M. Schoen; Yoshiharu Namba; Shengyi Li, Editor(s)

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