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Proceedings Paper

A new method on measuring radius of curvature of a conic aspherical mirror
Author(s): Chuan-ke Huang; Yong-qian Wu; Bin Fan; Feng-tao Yan; Feng-wei Liu; Yong-hong Zhang
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Paper Abstract

We present a method to measure the radius of curvature of a concave conic asphere. By analysis the central area of the asphere, we can measure the radius of an arbitrary point in the central area instead of the vertex of asphere. In the procedure, we firstly adjust the interferometer until the interferogram of the central area approach nulls, then put the laser tracker ball at the beam focus of the interferometer and move the tracker ball to touch the central area of the aspherical surface to get the two positions. With these measurement data, we can calculate the radius of curvature of the aspherical vertex and its uncertainty.

Paper Details

Date Published: 2 September 2014
PDF: 9 pages
Proc. SPIE 9280, 7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 928017 (2 September 2014); doi: 10.1117/12.2070637
Show Author Affiliations
Chuan-ke Huang, Institute of Optics and Electronics (China)
Univ. of Chinese Academy of Sciences (China)
Yong-qian Wu, Institute of Optics and Electronics (China)
Bin Fan, Institute of Optics and Electronics (China)
Feng-tao Yan, Institute of Optics and Electronics (China)
Univ. of Chinese Academy of Sciences
Feng-wei Liu, Institute of Optics and Electronics (China)
Univ. of Chinese Academy of Sciences (China)
Yong-hong Zhang, Institute of Optics and Electronics (China)
Univ. of Chinese Academy of Sciences (China)


Published in SPIE Proceedings Vol. 9280:
7th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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