天问一号高分相机主光机在线装调技术研究  

Research on on-line alignment technology with main optical-mechanical structure of Tianwen-1 high-resolution camera

作　　者：王克军[1] 董吉洪[1] 朱时雨[1] 李威[1] 孟庆宇[1] WANG Kejun;DONG Jihong;ZHU Shiyu;LI Wei;MENG Qingyu(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China)

机构地区：[1]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：《光学精密工程》2022年第2期199-209,共11页Optics and Precision Engineering

基　　金：国家青年科学基金项目(No.11703027)。

摘　　要：天问一号高分相机采用了离轴三反光学系统,指标精度高,结构复杂,研制周期短。鉴于上述要求,对离轴三反光学系统的计算机辅助装调技术进行了深入研究,并应用到天问一号高分相机主光机结构的装调过程中,利用计算机辅助装调技术使天问一号高分相机主光机结构的装调指标迅速收敛。各个视场的平均系统波像差优于λ/14,在特征频率57.1 lp/mm的平均传递函数0.381。此外,对主光机结构开展了一系列的环境模拟试验,包括力学应力筛选试验、高低温循环试验和失重环境适应性试验。在经历试验后,各技术指标均变化很小,基本满足总体设计指标要求。天问一号成功发射,传回了清晰的火星照片,进一步验证了计算机辅助装调技术的装调效果。The Tianwen-1 high-resolution camera adopts an off-axis three-mirror optical system,with a high precision index,complex structure,and short development cycle. In view of the above requirements,the computer-aided alignment technology of the off-axis three-mirror optical system is thoroughly investigated and applied to the alignment process of the main optical-mechanical structure of the Tianwen-1 highresolution camera. The application of this technology causes the alignment index of the main optical-mechanical structure of the camera to converge rapidly. The average system RMS is better than λ/14 for each field of view and the average transfer function is 0. 381 at the characteristic frequency of 57. 1 lp/mm. A series of environmental simulation tests,including a mechanical test,temperature cycling test,and weightlessness adaptability test,was conducted on the main optical-mechanical structure. Following the experiments,all the technical indexes changed only slightly,thus meeting the requirements of the overall design indexes. Finally,Tianwen-1 was successfully launched,and clear images of Mars were sent,thus proving the effectiveness of the computer-aided alignment technology.

关 键 词：天问一号 空间遥感器 系统装调 离轴三反 力学试验 

分 类 号：TH751[机械工程—仪器科学与技术]