机载相机非球面光学系统热光学特性分析  

Analysis of thermal optical properties of airborne camera aspheric optical system

作　　者：姜东旭 孙宝玉[1] 李迎春[1] 林洁琼[1] 王冬雪 王文攀 JIANG Dongxu;SUN Baoyu;LI Yingchun;LIN Jieqiong;WANG Dongxue;WANG Wenpan(Changchun University of Technology,Changchun 130012,China;Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)

机构地区：[1]长春工业大学,吉林长春130012 [2]中国科学院长春光学精密机械与物理研究所,吉林长春130033

出　　处：《应用光学》2020年第2期270-275,共6页Journal of Applied Optics

基　　金：科技部国家重点研发计划项目(2016YFE0105100)。

摘　　要：环境温度是影响非球面光学系统成像质量的主要因素之一,采用热光学特性分析方法,对某机载相机非球面光学系统进行热光学特性分析,通过有限元法分析相机光学系统结构热变形,并去除镜面表面刚体位移,将面型数据输入光学软件程序进行Zernike多项式拟合,将拟合结果导入光学设计软件中,对非球面光学系统成像进行性能评价。分析结果表明:热光学特性分析方法可以有效地对非球面光学系统的实际工作环境进行仿真,预测环境温度对光学系统成像质量的影响,对光学系统设计具有指导意义。Ambient temperature is one of the main factors affecting the imaging quality of aspheric optical systems.The analysis method of thermal optical properties was used to analyze the thermal optical properties of an airborne camera aspheric optical system.The finite element method was used to analyze the thermal deformation of the camera optical system structure,and the rigid body displacement of the mirror surface was removed.The surface data was input into the optical software program for Zernike polynomial fitting,and the fitting results were imported into the optical design software to evaluate the imaging performance of aspheric optical system.The results show that the analysis method of thermal optical properties can effectively simulate the practical working environment of the aspheric optical system,and predict the influence of ambient temperature on the imaging quality of optical system,which have guiding significance for the optical system design.

关 键 词：非球面光学系统 热光学特性分析 刚体位移 ZERNIKE多项式 

分 类 号：TN206[电子电信—物理电子学] TH744[机械工程—光学工程]