27 December 2001 Manufacturing and testing of two off-axis aspherical mirrors
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Abstract
In this paper, the manufacturing and testing procedures to make large off-axis aspherical mirrors are presented. The difficulties in polishing and testing for both circular aperture and rectangular aperture mirrors are previewed, and a possible solution is given. The two mirrors have been polished by means of CCOS, the final accuracy is 25-nm rms for 770-mm x 210-mm rectangular mirror and 20-nm rms for (phi) 600-mm circular mirror. These results just meet the optical tolerances specified by the designer, and the manufacturing and testing procedures presented here show good ability to make large off-axis aspherical mirrors.
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Xuejun Zhang, Xuejun Zhang, Zhicheng Weng, Zhicheng Weng, Zhongyu Zhang, Zhongyu Zhang, Quandou Wang, Quandou Wang, Fengdong Zhang, Fengdong Zhang, } "Manufacturing and testing of two off-axis aspherical mirrors", Proc. SPIE 4451, Optical Manufacturing and Testing IV, (27 December 2001); doi: 10.1117/12.453609; https://doi.org/10.1117/12.453609
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