20 October 1992 Zone-plate null interferometer for measuring aspherical mirror with large aperture
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Proceedings Volume 1720, Intl Symp on Optical Fabrication, Testing, and Surface Evaluation; (1992) https://doi.org/10.1117/12.132137
Event: International Symposium on Optical Fabrication, Testing, and Surface Evaluation, 1992, Tokyo, Japan
Abstract
A new computer generated hologram (CGH) zone-plate common path interferometer which can be used for testing an aspherical mirror with large aperture is presented. A CGH zone- plate made by laser beam drawing is used as the null optical element and its diffraction of (0, 0) and (+1, +1) orders are used as reference light and test light, respectively. Therefore, stigmatic points can be formed so as to use spatial filter effectively to get rid of extraneous light. As a result, fringes with high S/N can be obtained.
© (1992) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Toshio Honda, Y. Kawamoto, Haike Guan, Masahiro Yamaguchi, and Nagaaki Ohyama "Zone-plate null interferometer for measuring aspherical mirror with large aperture", Proc. SPIE 1720, Intl Symp on Optical Fabrication, Testing, and Surface Evaluation, (20 October 1992); doi: 10.1117/12.132137; https://doi.org/10.1117/12.132137
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