“宋”望远镜夏克哈特曼光学系统设计  

Design of SONG Shack-Hartmann optical system

作　　者：寇松峰[1,2] 刘根荣[1,2] 牛冬生[1,2] 叶宇[1,2] 王国民[1,2] 

机构地区：[1]中国科学院国家天文台南京天文光学技术研究所,江苏南京210042 [2]中国科学院天文光学技术重点实验室,江苏南京210042

出　　处：《应用光学》2014年第1期1-6,共6页Journal of Applied Optics

基　　金：国家自然科学基金(11273040)

摘　　要：根据中国"宋"标准节点望远镜系统要求,设计了用于望远镜波前误差测量的夏克哈特曼(S-H)传感器光学系统。从望远镜衍射极限成像和观测星等要求出发,对S-H的采样点数选取和波面重建精度进行分析计算,根据所选微透镜阵列和"宋"望远镜光学参数进行S-H准直镜的消像差设计,采用两组双胶合透镜实现了480nm^680nm波长范围的系统衍射极限成像。设计的系统能够实现6等星的目标测量,测量精度0.05"。根据设计结果搭建了实验系统,对主镜初始状态和校正之后的波前误差进行了测量,并将S-H测量结果与4D干涉仪测量结果进行了比较。实验结果表明:所设计S-H系统测量精度0.008μm(RMS),能够满足"宋"望远镜的技术要求。In this paper, we gave an optic design of stellar oscillations network group （SONG） Shack-Hartmann （S-H）. The optical system and main parameters of S-H were determined, mainly according to the demands of diffraction limited imaging quality and magnitude of the tel escope; According to the optical parameters of SONG and the micro lens array, an eliminating aberration design was carried out based on two doublets The performance of the S-H was within diffraction limit. Designing results showed that the 6th magnitude and accuracy of 0.05 could be achieved. Based on the design results, an experimental system was built. A compara tive study on measuring accuracy between S-H and 4-D interferometer was carried out. The ex perimental results showed that the measuring accuracy of S-H is 0. 008 which could meet the requirements of Chinese SONG telescope.

关 键 词：光学设计 夏克哈特曼 主动支撑 对比测量 

分 类 号：O439[机械工程—光学工程]