离轴反射式系统面形误差高精度还原装调技术  

High Precision Reconstruction and Adjustment Technique for Surface Figure Error of the Off-axis Reflective System

作　　者：王春雨[1] 黄阳[1] 王聪[1] 牛锦川 赵英龙[1] 张生杰 王蓉[1] WANG Chunyu;HUANG Yang;WANG Cong;NIU Jinchuan;ZHAO Yinglong;ZHANG Shengjie;WANG Rong(Beijing Institute of Space Mechanics&Electricity,Beijing 100094,China)

机构地区：[1]北京空间机电研究所,北京100094

出　　处：《航天返回与遥感》2020年第2期58-66,共9页Spacecraft Recovery & Remote Sensing

基　　金：国家重大科技专项工程。

摘　　要：应用于航天遥感领域的离轴反射式系统,由于装调中光学元件面形误差与位置失调引入的误差经常混合在一起,直接影响计算机辅助装调仿真分析的准确性,从而降低光学系统的装调品质和效率。为解决此难题,文章编制面形数据转换处理算法,对光学元件实测面形数据进行转化处理,结合光学设计软件Code V,准确计算、还原并剥离出面形误差对系统像质的影响,实现离轴反射式系统的快速高精度装调。经验证分析,该算法与传统的Zernike多项式反演拟合算法相比准确度更高,还原精度优于90%,且可实现非圆域(如:椭圆形、矩形、有遮拦等任意形状)光学元件实测面形在光学仿真软件中的高精度还原,为离轴反射式系统高精度快速装调提供更准确的计算。In the field of aerospace remote sensing,the errors of optical element surface figure and position misalignment are often mixed together for the off-axis reflection system,which directly affects the accuracy of simulation analysis of computer aided alignment,and reduces the quality and efficiency of the optical system alignment.In order to solve this problem,a surface figure data conversion algorithm is proposed to convert and process the surface figure data of optical elements.Combined with Code V,the influence of the surface figure error on the image quality of the system is calculated and removed,thus achieving fast optical alignment for the off-axis reflection system with high precision.By verification and analysis,the accuracy of this algorithm is higher than the traditional inversion Zernike polynomial fitting method with reconstruction accuracy better than 90%.In addition,the surface figure data conversion algorithm can also apply to optical elements with non-circular shapes,such as ellipse,rectangle,shading and other arbitrary shapes,in the optical simulation software with high precision,which can rapidly provide more accurate results for optical alignment of the off-axis reflection system.

关 键 词：离轴反射式系统 面形误差 失调 计算机辅助装调 高精度还原 航天遥感 

分 类 号：V443.5[航空宇航科学与技术—飞行器设计]