Manufacturing of optical elements of a cryogenic optical system

Mangzuo Shen; Xiangdi Lin; Wenli Ma; Sheng Liao

doi:10.1117/12.402744

6 October 2000 Manufacturing of optical elements of a cryogenic optical system

Mangzuo Shen, Xiangdi Lin, Wenli Ma, Sheng Liao

Proceedings Volume 4231, Advanced Optical Manufacturing and Testing Technology 2000; (2000) https://doi.org/10.1117/12.402744
Event: International Topical Symposium on Advanced Optical Manufacturing and Testing Technology, 2000, Chengdu, China

Abstract

Cryogenic optical system undergoes wide temperature change; therefore it must be athermal. That means when the system is cooled down to very low temperature, its imaging property should be kept as good as at room temperature. One way to achieve athermal optical system requires that all optical and mechanical parts in the system be made from same material. An all-reflective cryogenic optical system was thus developed in IOECAS, in which aluminum alloy was utilized to make such a system. This paper describes the key techniques for manufacturing this cryogenic optical system: material selection, forging process of the aluminum alloy blanks, initial machining, heat treatments, and final figuring. The cryogenic test of the developed system proved the validity of the manufacturing process.

Citation Download Citation

Mangzuo Shen, Xiangdi Lin, Wenli Ma, and Sheng Liao "Manufacturing of optical elements of a cryogenic optical system", Proc. SPIE 4231, Advanced Optical Manufacturing and Testing Technology 2000, (6 October 2000); https://doi.org/10.1117/12.402744

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