大口径离轴反射式星模拟器光机结构设计  

Design of opto mechanical structure of large aperture off axis reflector star simulator

作　　者：石宝领 王永宪[2] 朱俊清 关英俊[1] SHI Bao-ling;WANG Yong-xian;ZHU Jun-qing;GUAN Ying-jun(School of Mechanical and Electrical Engineering,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]长春工业大学机电工程学院,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：《激光与红外》2024年第6期964-970,共7页Laser & Infrared

基　　金：国家自然科学基金项目(No.62175234)资助。

摘　　要：根据高精度星敏感器地面测试任务中模拟无穷远处目标星体的实际应用需求,针对常规星模拟器体积庞大,装调及校准困难等实际问题,设计了一种大口径、长焦距、可实现自准直功能的离轴反射式星模拟器光机结构,用来模拟无穷远处的恒星所发出的平行光。采用离轴反射式光学设计,避免中心遮拦。采用光管焦面分光方式,通过半透半反式分光镜的反射与透射功能实现光路的传递,压缩了镜筒长度;通过探测器接收分光镜透射的光像可直接辨别光学系统的准直性能,便于装调,且方便后期使用与校准;采用顶丝调节姿态降低了装调难度。实际测试结果表明:光机系统的入瞳口径φ210mm,出瞳距离2100mm,整机的系统波像差(rms)测量值为0030λ,可精确模拟0~7等星,工作波段500~800nm,满足当前对高精度星敏感器的标定技术指标要求,为星模拟器的高效快速研制提供了一种设计方法。In this paper,based on the practical application requirements of simulating infinitely distant target stars in high precision star sensor ground testing tasks,and in view of the practical problems of large volume,difficult installation and calibration of conventional star simulators,an opto mechanical structure of off axis reflector star simulator with large aperture,long focal length and self collimation function is designed to simulate the parallel light emitted from stars at infinitely distant distances.The design adopts off axis reflective optical design to avoid center blocking.By adopting the focal plane splitting method of the optical tube,the transmission of the optical path through the reflection and transmission function of the semi transparent semi trans spectroscope is realized,and the length of the mirror tube is compressed.Collimation performance of the optical system can be directly distinguished by the detector receiving the light image transmitted by the beam splitter,which is easy to install and convenient for later use and calibration.And the use of the jackscrew to adjust the posture reduces the difficulty of mounting and adjusting.The actual test results show that the optical machine system has an inlet pupil aperture of φ210mm and outlet pupil distance of 2100mm,whose wave aberration(rms)of the whole optical machine system is 0.030λ,can accurately simulate 0~7 magnitude stars,and the working band is 500~800 nm.The design meets the requirement of calibration technical index for high precision star sensor,and provides a design method for the efficient and rapid development of star simulator.

关 键 词：星模拟器 光机结构 离轴反射 自准直 

分 类 号：TP73[自动化与计算机技术—检测技术与自动化装置] TH74[自动化与计算机技术—控制科学与工程]