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7 August 2019 Lightweight unimorph mirror using an optical replication method
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Abstract

Active optics technology eases the requirements for the fabrication and stability of mirrors. Optical replication techniques make it possible to fabricate a mirror of optical quality rapidly and inexpensively. Combining the advantages of these two methods, we designed a lightweight unimorph mirror with a diameter of 160 mm based on an Al-SiC passive layer. A finite element model was established to predict the performance of this mirror and to optimize relevant parameters. A spherical prototype mirror was fabricated and tested to measure its shape-correction capability, thermal stability, and surface roughness; this prototype has been used in an innovation project on lightweight active mirrors from the Chinese Academy of Sciences.

© 2019 Society of Photo-Optical Instrumentation Engineers (SPIE) 0091-3286/2019/$28.00 © 2019 SPIE
Ying Zhang, Yongtao Yuan, Hong Zhou, Hong Liu, Jingzhong Fang, Ang Zhang, and Hao Xian "Lightweight unimorph mirror using an optical replication method," Optical Engineering 58(8), 085101 (7 August 2019). https://doi.org/10.1117/1.OE.58.8.085101
Received: 12 April 2019; Accepted: 19 July 2019; Published: 7 August 2019
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