The study of 700mm-diameter primary mirror based on topology optimization and sensitivity analysis

Xin Wang; Xiaoying He; Juanjuan Jing; Lei Feng; Jinsong Zhou; Wei Wang; Yacan Li; Lidong Wei

doi:10.1117/12.2247143

31 October 2016 The study of 700mm-diameter primary mirror based on topology optimization and sensitivity analysis

Xin Wang, Xiaoying He, Juanjuan Jing, Lei Feng, Jinsong Zhou, Wei Wang, Yacan Li, Lidong Wei

Proceedings Volume 10021, Optical Design and Testing VII; 100211W (2016) https://doi.org/10.1117/12.2247143
Event: SPIE/COS Photonics Asia, 2016, Beijing, China

Abstract

The primary mirror is an important optical component of space camera. Its performance related to the optical image quality, and the weight directly affects the whole camera weight. The traditional design of primary mirror relies on much experience, lacking of precise theory, and many design parameters obtained by empirical formulas, thus the performance of the result is unstable. For this study, a primary mirror made of SiC with the diameter of 700mm was conceptual designed to get the optimized structure. Then sensitivity analysis was carried out to determine the optimum thickness of the back muscles. Finally, the optimum primary mirror fully satisfied the required was completed, with outstanding mechanical performance and light weight. A comparison between the optimum primary and traditional primary was performed and the results showed that the optimum primary has higher lightweight ratio increased by 5%, higher modal frequency increased by 81Hz.The maximum deformation under gravity reduced by 48nm, PV of the mirror surface reduced by 8.1nm and RMS reduced by 3.1nm. All the results indicated that the optimization method in the paper is reasonable and effective, which gives a reference to the primary mirror design in the future.

Citation Download Citation

Xin Wang, Xiaoying He, Juanjuan Jing, Lei Feng, Jinsong Zhou, Wei Wang, Yacan Li, and Lidong Wei "The study of 700mm-diameter primary mirror based on topology optimization and sensitivity analysis", Proc. SPIE 10021, Optical Design and Testing VII, 100211W (31 October 2016); https://doi.org/10.1117/12.2247143

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available