Precision manufacturing of metal mirrors based on additive manufacturing

Wencong Chen; Lijun Sun; Siyuan Li; Junqiang Wu; Zhaohui Zhang

doi:10.1117/12.2625102

27 March 2022 Precision manufacturing of metal mirrors based on additive manufacturing

Wencong Chen, Lijun Sun, Siyuan Li, Junqiang Wu, Zhaohui Zhang

Proceedings Volume 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications; 1216985 (2022) https://doi.org/10.1117/12.2625102
Event: Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 2021, Kunming, China

Abstract

In order to solve the problems of long manufacturing cycle and high processing cost of mirrors in reflective optical systems of space cameras, a method for manufacturing metal mirrors based on additive manufacturing process is proposed. This paper designs an open honeycomb structure on the mirror backplane, mirror blank is prepared by additive manufacturing technology. Preliminary improvement of surface quality with rough machining and diamond turning. Then, a high-precision mirror surface is obtained through surface modification and secondary diamond turning. The diameter of the prepared mirror is 110mm, mass reduction rate of 70% and surface shape accuracy is better than λ /15 RMS( λ =632.8nm).The results show that the metal mirror prepared by this process can meet the requirements of high-precision reflective optical systems. The research work in this article can provide technical reference for the application of additive manufacturing technology in the field of optics. It has important reference and guiding significance for the research and application of related fields.

Citation Download Citation

Wencong Chen, Lijun Sun, Siyuan Li, Junqiang Wu, and Zhaohui Zhang "Precision manufacturing of metal mirrors based on additive manufacturing", Proc. SPIE 12169, Eighth Symposium on Novel Photoelectronic Detection Technology and Applications, 1216985 (27 March 2022); https://doi.org/10.1117/12.2625102

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KEYWORDS

Mirrors

Additive manufacturing

Optics manufacturing

Metals

Aluminum

Diamond turning

Reflectivity

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