摘要
针对Ф1.3m口径同轴四反望远镜镜头,提出了一种有效的装调方法。主镜口径为1.3m,采用背部双脚架(bipod)支撑形式。使用激光跟踪仪多边测量法对支撑结构精密定位,利用Stewart机构位置反解方法进行主镜位姿的调整;通过变换反射镜组件方位进行面形测量,提取重力作用造成的反射镜面形误差;利用Offner零位补偿检测光路进行基于干涉测量的反射镜定心,实现反射镜光学基准与镜头基准的传递;进行镜头的光轴竖直装调,采用测试镜头像高和在线标定标准镜面形的技术手段来提高装调精度与收敛速度。镜头的中心视场波前和边缘视场波前rms分别为0.053λ(λ=0.6328μm)和0.077λ。
An effective assembly method is presented for 1.3maperture coaxial quad-inverse lens.The primary mirror has a diameter of 1.3mand is supported by a back bipod.The precise positioning of the supporting structure is carried out by using the laser tracker polygon measurement method,and the position of the primary mirror are adjusted by using the Stewart mechanism position inverse solution method.Surface measurement is made by changing the orientation of the reflector assembly to extract the surface error of the reflector caused by gravity.The optical datum of the reflector and the lens datum can be transferred by centering the reflector based on interferometry using the Offner zero-position compensation detecting light path.The lens is mounted vertically,and the assembly accuracy and convergence speed are improved by testing the lens image height and calibrating the standard mirror shape online.The center and edge field wavefronts RMS of the lens are 0.053λ(λ=0.6328um)and 0.077λ,respectively.
作者
陈佳夷
王海超
霍腾飞
李斌
CHEN Jiayi;WANG Haichao;HUO Tengfei;LI Bin(Beijing Institute of Space Mechanics&Electricity,Beijing Key Laboratory of Advanced Optical Remote Sensing Technology,Beijing 100094,China)
出处
《光学技术》
CAS
CSCD
北大核心
2021年第1期12-16,共5页
Optical Technique
基金
国家重点研发计划地球观测与导航专项项目(2016YFB0500802)。
关键词
成像光学
镜头装调
望远镜
双脚架
重力误差
竖直装调
imaging optics
optical assembly
telescope
bipod
gravity error
vertical alignment
