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http://dx.doi.org/10.3807/KJOP.2003.14.4.443

A study on optimum design of a lightweight mirror  

박강수 (한국과학기술원 기계공학과)
박현철 (한국과학기술원 기계공학과)
조지현 (한국과학기술원 기계공학과)
윤성기 (한국과학기술원 인공위성 연구센터)
이준호 (한국과학기술원 인공위성 연구센터)
Publication Information
Korean Journal of Optics and Photonics / v.14, no.4, 2003 , pp. 443-448 More about this Journal
Abstract
A study on optimum design of the lightweight mirror of a satellite camera is presented. An optical surface deformation of the lightweight mirror, which is a principal component of the camera system, is an important factor affecting the optical performance of the whole camera system. In this study, optimum design of the lightweight mirror is presented. Total weight of the mirror to reduce the optical surface deformation and the launching cost is used as an objective function. Peak-to-valley value and natural frequency of the mirror are given as constraints to the optimization problem. The sensitivities of the objective function and constraint are calculated by a finite difference method. The optimization procedure is carried out by the commercial optimizer, DOT. As a verification of the optimum design of the mirror, two design examples are treated. In the real application example, the lightweight mirror with 600mm effective diameter is treated. The optimized results with various design variables, which are obtained by considering thickness limitations, are analyzed.
Keywords
lightweight mirror; optimal design; P-V value; RMS value;
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