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Proceedings Paper

Frequency-domain analysis on the optical surface accuracy
Author(s): Qinhua Huang; Haobo Cheng; Yongtian Wang; Peng Wang; Lingqi Wu
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Paper Abstract

Residual figure errors on the polished optical surfaces would affect the quality of the optical system. Among them, mid spatial frequency defects would produce small angle scattering, which has the effects of smearing out of the imaging core and degrading the resolution. In this paper, taking a classical Schmidt-Cassegrain system into consideration and a cosine-modulation function is stacked onto the primary mirror surface to simulate and analyze the effect of the mid spatial frequency. Actually, the mid spatial frequency irregularities could decay the resolution of imaging systems although the conventional specifications such as RMS and PV meet the requirements.

Paper Details

Date Published: 21 May 2009
PDF: 5 pages
Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 72823W (21 May 2009); doi: 10.1117/12.831075
Show Author Affiliations
Qinhua Huang, Beijing Institute of Technology (China)
Haobo Cheng, Beijing Institute of Technology (China)
Yongtian Wang, Beijing Institute of Technology (China)
Peng Wang, Shanghai Institute of Technical Physics (China)
Lingqi Wu, Shanghai Institute of Technical 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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