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Proceedings Paper

Effects of structured surface errors on MTF of off-axis TMA system
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Paper Abstract

Off-axis three-mirror anastigmatic (TMA) system adopt off-axis aspheric mirror for high resolution telescope. However, residual tooling marks from advanced aspheric fabrication techniques such as computer controlled optical surfacing (CCOS) are difficult to remove. These marks typically in the mid-spatial frequency (MSF), in optical fabrication also named surface band error. MSF will reduce MTF and contrast. This paper using Fourier method to research the relationship between MSF and the reduction, and applies simulation method to analyze the effect of fabrication residual marks on the loss of MTF in off-axis TMA optical system, also analyze the scatter influence of MSF by plot the relationship between surface errors PV/RMS and spot diameter.

Paper Details

Date Published: 16 October 2012
PDF: 5 pages
Proc. SPIE 8416, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 84161B (16 October 2012); doi: 10.1117/12.970630
Show Author Affiliations
Xuefeng Zeng, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Graduate Univ. of Chinese Academy of Sciences (China)
Feng Yan, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Xuejun Zhang, Changchun Institute of Optics, Fine Mechanics and Physics (China)


Published in SPIE Proceedings Vol. 8416:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies
Li Yang; Eric Ruch; Shengyi Li, Editor(s)

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