面向温度变化的相机光学系统参数模型研究  

Study on the Parameter of Optical System Based on Temperature Variation

作　　者：刘丽伟[1] 赵子君 朱绪康 许倩 LIU Li-wei;ZHAO Zi-jun;ZHU Xu-kang;XU-Qian(College of Computer Science and Engineering,Changchun University of Technology,Changchun Jilin 130012,China)

机构地区：[1]长春工业大学计算机科学与工程学院,吉林长春130012

出　　处：《计算机仿真》2021年第3期180-185,共6页Computer Simulation

基　　金：国家自然科学基金(61803043);吉林省科技发展计划项目(20180520224JH);吉林省教育厅科学技术项目(JJKH20181043KJ)。

摘　　要：温度变化会导致航天相机光学系统不同组件的膨胀或收缩和光学材料折射率的变化,都会带来光学系统内参数的变化,从而影响相机的测量精度。针对上述问题,首先利用仿真和实验表明,温度变化是通过影响内参数变化进而影响像点位置发生变化,并建立像点位置漂移模型。然后提出了一种基于温度变化与镜头光学系统内参数变化关系的曲线拟合模型,最后通过实验证明该模型能够有效地降低受温度影响的图像点位置漂移量,从而减小温度变化对相机光学系统的影响。Temperature variation will lead to expansion or contraction of different components of the optical system of aerospace camera and change of refractive index of optical materials,which will bring changes in parameters of the optical system,thus affecting the measurement accuracy of the camera.To solve this problem,this paper first carried out simulation and experiment to show that temperature variation affects the position of image point by affecting the variation of internal parameters,and then established the image point position drift model.Then,a curve fitting model based on the relationship between temperature variation and parameter variation in the lens optical system was proposed.Finally,the experiments show that this model can effectively reduce the image point position drift affected by temperature,so as to reduce the influence of temperature variation on the camera optical system.

关 键 词：温度变化 内参数 光学系统 漂移模型 

分 类 号：N945.12[自然科学总论—系统科学]