基于dOTF的大口径透射光学元件检测技术  

Large aperture transmission optical element detection method based on dOTF

作　　者：唐境 张景旭[1] 安其昌[1] 李洪文[1] Tang Jing;Zhang Jingxu;An Qichang;Li Hongwen(Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China;University of Chinese Academy of Sciences,Beijing 100049,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 [2]中国科学院大学,北京100049

出　　处：《红外与激光工程》2021年第6期225-231,共7页Infrared and Laser Engineering

基　　金：中国科学院青年创新促进会(2020221);中国科学院装备研制项目(YJKYYQ20200057);白求恩医学工程与仪器中心基金(BQEGCZX2019042);国家自然科学基金(11803034,62005279)。

摘　　要：为了保证在重力变化下大口径巡天望远镜透镜组的成像质量,需要研究一种可以适用于大口径透镜组的波前检测方法,用于实现系统装调检测。首先,基于差分光学传递函数(differential optical transfer function,dOTF)建立了一套波前对准检测技术,在此基础上,分析了运算过程中相位解缠,CCD探测噪声以及大气扰动对检测算法造成的误差影响,结果表明检测误差分别小于10%、1%和2.5%,经过叠加可得整体的测量精度约为10.3%,满足一般大口径大视场检测系统设计指标。最后针对80 mm的透射式系统进行验证,由实验结果得到波前检测主要成分为彗差,与理论分析结果一致,符合几何光学预测结果。To ensure the corrector lens meet the imaging quality of design requirements under the change of gravity,the large aperture corrector lens needs a wavefront detection method for implementing system adjustment detection.Firstly,on the basis of the differential optical transfer function(dOTF),the wavefront alignment detection technology was proposed consequently.Next,the error effects caused by the phase resolution,CCD detection noise and atmospheric disturbance on the detection algorithm were analyzed.The results show that the detection error is less than 10%,1%and 2.5%.The overall measurement precision obtained by superposition is about 10.3%,which meets the design indexes of general large aperture survey design requirement.Finally,the accuracy of the detection method in the 80 mm transmission system was verified by the experiment.From the experimental results,the main error of wavefront detection is coma,which is consistent with the theoretical analysis results and consistent with the geometric optical prediction results.

关 键 词：大口径巡天望远镜 大口径校正透镜 差分光学传递函数 集成检测 

分 类 号：TH751[机械工程—仪器科学与技术]