Development of 1-m primary mirror for a spaceborne camera

Hagyong Kihm; Ho-Soon Yang; Hyug-Gyo Rhee; Yun-Woo Lee

doi:10.1117/12.2187760

2 September 2015 Development of 1-m primary mirror for a spaceborne camera

Hagyong Kihm, Ho-Soon Yang, Hyug-Gyo Rhee, Yun-Woo Lee

Proceedings Volume 9573, Optomechanical Engineering 2015; 95730W (2015) https://doi.org/10.1117/12.2187760
Event: SPIE Optical Engineering + Applications, 2015, San Diego, California, United States

Abstract

We present the development of a 1-m lightweight mirror system for a spaceborne electro-optical camera. The mirror design was optimized to satisfy the performance requirements under launch loads and space environment. The mirror made of Zerodur® has pockets at the back surface and three square bosses at the rim. Metallic bipod flexures support the mirror at the bosses and adjust the mirror’s surface distortion due to gravity. We also show an analytical formulation of the bipod flexure, where compliance and stiffness matrices of the bipod flexure are derived to estimate theoretical performance and to make initial design guidelines. Optomechanical performances such as surface distortions due to gravity is explained. Environmental verification of the mirror is achieved by vibration tests.

Citation Download Citation

Hagyong Kihm, Ho-Soon Yang, Hyug-Gyo Rhee, and Yun-Woo Lee "Development of 1-m primary mirror for a spaceborne camera", Proc. SPIE 9573, Optomechanical Engineering 2015, 95730W (2 September 2015); https://doi.org/10.1117/12.2187760

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