共轴三反光学系统卧式装调技术  

Horizontal alignment technology of coaxial three-mirror optical system

作　　者：王海超[1] 陈佳夷[1] 霍腾飞 李斌[1] 刘君航 WANG Haichao;CHEN Jiayi;HUO Tengfei;LI Bin;LIU Junhang(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：《应用光学》2020年第5期911-915,共5页Journal of Applied Optics

基　　金：国家重大科技专项。

摘　　要：共轴三反光学系统是空间光学遥感器常用的设计形式,以"高分一号"遥感卫星高分辨率相机装调为例,对共轴三反系统计算机辅助装调技术进行了研究。提出以主镜光轴为装调基准,通过调整三镜控制系统视场和调整次镜控制系统像差的装调方法,分析了次镜和三镜的失调量与Zernike系数变化关系,由光学设计软件求得系统灵敏度矩阵,用于指导系统装调工作,提高了装调精度,缩短了装调周期。测试结果表明:光学系统各视场Zernike系数优于0.05λ,系统波相差RMS值优于0.06λ,系统通过在轨成像测试,图像清晰,层次丰富。Coaxial three-mirror optical system is a popular optical system design form in space optical remote sensor.Taking the alignment of high-resolution camera of the GF-1 sensing satellite as an example,the computer-aided alignment technology of coaxial three-mirror optical system was researched.The primary mirror optical axis was set as the benchmark.By adjusting the alignment methods of three-mirror control system field of view and secondary mirror control system aberration,the changes in the relationship between the misalignment rate of secondary mirror and three-mirror and Zernike coefficient were analyzed.The system sensitivity matrix was obtained by the optical design software to guide the system alignment,which improved the accuracy of alignment and shortened the period of alignment.Test results show that the Zernike coefficient of each field of view in optical system is better than 0.05λ,and the RMS value of system wave aberration is better than 0.06λ.The system passes the on-orbit imaging test with clear and multilayer images.

关 键 词：计算机辅助装调 共轴三反系统 Zernike系数 遥感卫星 

分 类 号：TN206[电子电信—物理电子学] TH743[机械工程—光学工程]