Hα与白光望远镜的光机热一体化分析  

Integrated optical-structural-thermal analysis of the Hα and white light telescope

作　　者：吴明长[1,2] 杨世模[1] 陈志远[1] 古学东[1] 王慎[1] 

机构地区：[1]中国科学院国家天文台空间天文技术实验室,北京100012 [2]中国科学院研究生院物理学院,北京100049

出　　处：《红外与激光工程》2009年第6期1072-1078,共7页Infrared and Laser Engineering

基　　金：国家自然科学基金资助项目(10878018)

摘　　要：为了实现对空间光机系统在复杂环境下光学性能的快速评估,介绍了光机热一体化分析方法的原理和流程,以及在该原理基础上研发的光机热分析软件的主要算法和功能,阐述了作为其关键部分的光机热数据接口问题。以Hα和白光望远镜(HWT)为例,计算出该望远镜在不同系统温度下的光机热一体化分析结果。给出的光学传递函数和波像差变化结果表明:在不同系统温度下,HWT望远镜光学性能将发生相应变化。当系统温度约为20℃时,系统性能最佳,其波像差约为λ/10。当系统温度在15～25℃之间时,系统波像差约优于λ/6。基于光机热一体化分析方法的原理,给出了适用于空间光机系统的一套可行的技术途径。To realize the rapid evaluation of the optical performance of the high resolution space opto-mechanical system under complex environment, the main principle and process of the integrated optical-structural-thermal analysis were introduced. The primary algorithms and functions of the analysis tool developed on the principle of the integrated optical-structural-thermal were presented. As the key points, the data interface problems were illustrated. The Hα and white light telescope（HWT） was taken as an example of the integrated optical-structural-thermal analysis. The wave front error and the modulation transfer function results show that the optical performances of the HWT telescope change with the system temperature. The wave front error is about λ/10, which is best at the system temperature of 20 ℃. When the system temperature is between 15℃ and 25℃, the wave front error is better than λ/6.Based on the principle of the integrated optical-structural-thermal analysis, a practical technical route for the space optomechanical systems is presented.

关 键 词：光机热一体化分析 数据接口 有限元模型 弹性变形 

分 类 号：O436[机械工程—光学工程]