空间折返式光学系统反射镜组件胶层粘接设计与精密测量  

Design and precision measurement of adhesive layer bonding of mirror assembly in space reentry optical system

作　　者：赵岳[1] 郭惠楠[1] Zhao Yue;Guo Huinan(Xi′an Institute of Optics and Precision Mechanics,Chinese Academy of Sciences,Xi′an 710119,China)

机构地区：[1]中国科学院西安光学精密机械研究所,西安710119

出　　处：《仪器仪表学报》2024年第8期218-226,共9页Chinese Journal of Scientific Instrument

基　　金：陕西省2023年自然科学基础研究计划(2023-JC-QN-0714)项目资助。

摘　　要：为了满足折返式光学系统在空间环境中的应用,本文以某空间燃烧光学实验设备中的纹影光学系统为例,针对传统反射镜粘接工艺易受温度变化而影响光学系统成像质量的问题,提出了一种反射镜组件胶层粘接设计与量化分析方法,并对其空间姿态的精密测量进行了研究。采用环氧树脂胶作为反射镜组件的主要粘接剂,并以无热化作为约束条件,对粘接胶层理论计算方程进行改进优化;通过多目标仿真分析及数据拟合,选取合适的胶层厚度,并利用中心偏差测量仪及工装测量法实现反射镜与镜框共轴装配。在此基础上,采用坐标转换法建立基于经纬仪测量的反射镜组件装调坐标系,推导出平面反射镜组件俯仰及方位偏差与经纬仪测量值的对应关系,并通过经纬仪及五棱镜构建测量基准面实现反射镜组件空间姿态的精密测量。最终环境试验结果表明,应用该方法可实现燃烧光学实验纹影光学系统在空间复杂环境条件下的工作,其平面反射镜粘接后面型精度RMS为0.023λ,平面反射镜组件与光学系统光轴夹角均优于10″,光学设备在温度范围为-5℃~+45℃时成像清晰。该方法目前也应用于其他在研项中。To satisfy the application of the retractable optical system in the space environment,this article takes the Schlieren optical system in a space combustion optical experiment equipment as an example.The traditional mirror bonding process is susceptible to temperature change and the image quality of the optical system is affected.To address this problem,a method of adhesive layer bonding design and quantitative analysis of the mirror assembly is proposed,and the precision measurement of its space attitude is studied.Epoxy resin adhesive is used as the main adhesive of the mirror assembly,and the theoretical calculation equation of the adhesive layer is improved and optimized under the constraint condition of non-thermal.Through multi-objective simulation analysis and data fitting,the appropriate thickness of adhesive layer is selected.The coaxial assembly of mirror and frame is realized by using center deviation measuring instrument and tool measuring method.On this basis,a coordinate system based on theodolite measurement is established by using the coordinate transformation method,and the corresponding relationship between the pitch and azimuth deviation of the plane mirror assembly and the measured values of the theodolite is derived.The final environmental test results show that this method can be used to realize the work of Schlieren optical system in the space complex environment.The accuracy of the plane mirror adhesion is 0.023λ,the angle between the plane mirror assembly and the optical axis of the optical system is better than 10″,and the imaging of the optical device is clear when the temperature range is-5℃~+45℃.This method has also been applied to other research projects.

关 键 词：反射镜粘接 无热化 有限元仿真 精密测量 

分 类 号：TH741[机械工程—光学工程] TP391.9[机械工程—仪器科学与技术]