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Proceedings Paper

Design and analysis of structure of large aperture three-mirror off-axis optical system
Author(s): Ke-jun Wang; Ji-hong Dong; Wei Li; Quan-feng Guo; Yan-chun Li; Wei-guo Zhao; Xiaotao Cao; Hai-ping Wang
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Paper Abstract

On the basis of characteristics of optical system of Large aperture three-mirror off-axis, the mirrors’ support structure and the overall frame structure of the optical system was designed and investigated, the first and foremost is the lightweight of the support structure and the overall frame structure, the structure design of the three-mirror off-axis optical system was completed, which characteristic is integrative design of the overall frame structure , also the 3D model of the structure of the optical system was built, by means of the finite element analysis techniques, the modal analysis was done to the overall structure, the analysis results indicate that the first natural frequency of the overall structure is 162Hz,which is higher than 120 Hz requested by the overall structure of the optical system ,the overall structure have a high enough dynamic stiffness and reasonable distribution of modal, which ensure the overall structure in transportation and launch process to withstand severe vibration condition, and the shape error variation RMS and PV of optical mirror which are important indexes of image quality under the comprehensive influence of gravity and thermal load which is in the control range meet the design index.

Paper Details

Date Published: 15 October 2012
PDF: 10 pages
Proc. SPIE 8415, 6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes, 841510 (15 October 2012); doi: 10.1117/12.975219
Show Author Affiliations
Ke-jun Wang, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Ji-hong Dong, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Wei Li, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Quan-feng Guo, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Yan-chun Li, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Wei-guo Zhao, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Xiaotao Cao, Changchun Institute of Optics, Fine Mechanics and Physics (China)
Hai-ping Wang, Changchun Institute of Optics, Fine Mechanics and Physics (China)


Published in SPIE Proceedings Vol. 8415:
6th International Symposium on Advanced Optical Manufacturing and Testing Technologies: Large Mirrors and Telescopes
Wenhan Jiang; Myung K. Cho; Fan Wu, Editor(s)

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