光学 精密工程, 2010, 18 (3): 563, 网络出版: 2010-08-31   

拼接镜主动光学共焦实验

Co-focus experiment of segmented-mirror active optics
作者单位
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 研究生院,北京 100039
摘要
为了实现对拼接镜的共焦调整,建立了拼接镜主动光学共焦实验系统。实验中,拼接镜由3块对边长300 mm的正六边形子镜组成,子镜为球面,曲率半径为2 000 mm。采用Shack-Hartmann传感器进行共焦测量,用6个微位移平移台对两块子镜的离焦和倾斜进行调整。每个子镜对应Shack-Hartmann传感器的36个子孔径,用子孔径产生的像点位置偏移计算子镜之间的共焦误差。通过微位移平台调整,可控制子镜的轴向离焦误差优于1 μm rms,倾斜误差在两维方向上均优于0.02″ rms。实验表明,该方法适用于大型拼接镜面望远镜的共焦标定和实时调整。
Abstract
A co-focus experiment system of segmented-mirror active optics is built to realize the co-focus fine-tuning of a segmented-mirror.In this system, the segmented-mirror consists of three hexagonal submirrors with 300 mm side to side, and the shape of each submirror is spherical with 2 000 mm radius.A Shack-Hartmann sensor is used for co-focus measurement, and six micro-displacement translation stages in this system are used for adjusting the co-focus and tilt of the two sub mirrors.Each sub-mirror corresponds to 36 sub-apertures of the Shack-Hartmann sensor,and the co-focus errors can be calculated by the position deviation of the spots formed by the sub-apertures.After fine-tuning for micro-displacement translation stages, the rms de-focus error in the optical axis direction and the rms tilt errors in two orthogonal dimentions of the sub mirror can be controlled to less than 1 μm and 0.02″,respectivelly.The experiment shows that the method used in this system is also compatible to the co-focus calibration and real time adjustment of the large segmented mirror telescope.

林旭东, 陈涛, 王建立, 杨飞, 张景旭, 明名, 张丽敏, 陈宝刚, 李宏壮, 王富国. 拼接镜主动光学共焦实验[J]. 光学 精密工程, 2010, 18(3): 563. LIN Xu-dong, CHEN Tao, WANG Jian-li, YANG Fei, ZHANG Jing-xu, MING Ming, ZHANG Li-min, CHEN Bao-gang, LI Hong-zhuang, WANG Fu-guo. Co-focus experiment of segmented-mirror active optics[J]. Optics and Precision Engineering, 2010, 18(3): 563.

本文已被 5 篇论文引用
被引统计数据来源于中国光学期刊网
引用该论文: TXT   |   EndNote

相关论文

加载中...

关于本站 Cookie 的使用提示

中国光学期刊网使用基于 cookie 的技术来更好地为您提供各项服务,点击此处了解我们的隐私策略。 如您需继续使用本网站,请您授权我们使用本地 cookie 来保存部分信息。
全站搜索
您最值得信赖的光电行业旗舰网络服务平台!