Study on the optical manufacture and testing methods of a refractive-reflective meniscus primary mirror

Jian Kang; Bin Xuan; Jingjiang Xie

doi:10.1117/12.977603

16 October 2012 Study on the optical manufacture and testing methods of a refractive-reflective meniscus primary mirror

Jian Kang, Bin Xuan, Jingjiang Xie

Proceedings Volume 8416, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies; 841618 (2012) https://doi.org/10.1117/12.977603
Event: 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies (AOMATT 2012), 2012, Xiamen, China

Abstract

Manufacture and testing research on a refractive-reflective meniscus primary mirror with a central obscuration is presented. The two surfaces of the primary are both designed as spheres. Because of the index homogeneity, one of them has to be a free-form surface relied on the distribution of homogeneity. The primary is tested with a compensator. There is a difference between the optical paths of the primary of working status and testing status. The tolerance of mid-frequency error of the concave surface ranged from spatial period of 1.82mm to 0.39mm is tight so that the testing result can represent the performance of the primary. The core cut from the primary was cemented and manufactured together with the primary. The concave surface was manufactured to be a sphere. The system error caused by mid-frequency error of the concave sphere has reached to 10.3nm (PV). The wavefront aberration of the primary has reached to 126nm (PV).

Citation Download Citation

Jian Kang, Bin Xuan, and Jingjiang Xie "Study on the optical manufacture and testing methods of a refractive-reflective meniscus primary mirror", Proc. SPIE 8416, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Advanced Optical Manufacturing Technologies, 841618 (16 October 2012); https://doi.org/10.1117/12.977603

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KEYWORDS

Optics manufacturing

Photovoltaics

Manufacturing

Optical spheres

Optical testing

Mirrors

Wavefront aberrations

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