Frequency-domain analysis on the optical surface accuracy

Qinhua Huang; Haobo Cheng; Yongtian Wang; Peng Wang; Lingqi Wu

doi:10.1117/12.831075

20 May 2009 Frequency-domain analysis on the optical surface accuracy

Qinhua Huang, Haobo Cheng, Yongtian Wang, Peng Wang, Lingqi Wu

Proceedings Volume 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 72823W (2009) https://doi.org/10.1117/12.831075
Event: AOMATT 2008 - 4th International Symposium on Advanced Optical Manufacturing, 2008, Chengdu, Chengdu, China

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.

Citation Download Citation

Qinhua Huang, Haobo Cheng, Yongtian Wang, Peng Wang, and Lingqi Wu "Frequency-domain analysis on the optical surface accuracy", Proc. SPIE 7282, 4th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 72823W (20 May 2009); https://doi.org/10.1117/12.831075

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