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5 November 2020 Transformation of projection distortion for off-axis parabolic mirror in aberration-free point test
Zhenjun Bao, Heng Zhu, Zhigang Li, Dingyao Yan
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Proceedings Volume 11568, AOPC 2020: Optics Ultra Precision Manufacturing and Testing; 1156802 (2020) https://doi.org/10.1117/12.2573068
Event: Applied Optics and Photonics China (AOPC 2020), 2020, Beijing, China
Abstract
In view of the problem of projection distortion in the result of aberration-free point test of off-axis paraboloid mirror, this paper analyzes its formation principle, puts forward a transformation method from the detection coordinate system to the processing coordinate system, according to the mathematical relationship between the two, reconstructs the surface shape of the detection result, realizes the transformation of projection distortion image, and analyzes the error of the transformation result by using the fucial function. It is proved that this method is feasible by using the reconstructed surface results to guide the NC Polishing.
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Zhenjun Bao, Heng Zhu, Zhigang Li, and Dingyao Yan "Transformation of projection distortion for off-axis parabolic mirror in aberration-free point test", Proc. SPIE 11568, AOPC 2020: Optics Ultra Precision Manufacturing and Testing, 1156802 (5 November 2020); https://doi.org/10.1117/12.2573068
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KEYWORDS
Mirrors
Off axis mirrors
Distortion
Interferometers
Surface finishing
Polishing
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