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长春光学精密机械与物... [1]
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会议论文 [1]
发表日期
2009 [1]
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Study on the calculation and application for asphericity of rectangle off-axis aspherics (EI CONFERENCE)
会议论文
4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, November 19, 2008 - November 21, 2008, Chengdu, China
Li J.-F.
;
Xuan B.
;
Wang P.
;
Chen X.-P.
;
Zhang H.
;
Xie J.-J.
;
Song S.-M.
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提交时间:2013/03/25
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 180mm145mm
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. 2009 SPIE.
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