首页 | 本学科首页   官方微博 | 高级检索  
     

轻小型大视场自由曲面离轴光学系统设计
引用本文:赵宇宸,何欣,张凯,刘强,崔永鹏,孟庆宇. 轻小型大视场自由曲面离轴光学系统设计[J]. 红外与激光工程, 2018, 47(12): 1218001-1218001(7). DOI: 10.3788/IRLA201847.1218001
作者姓名:赵宇宸  何欣  张凯  刘强  崔永鹏  孟庆宇
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
基金项目:国家自然科学基金(61705220)
摘    要:随着空间技术的不断发展,高性能、低成本的轻小型空间光学系统成为空间光学领域一个新的研究热点。离轴三反光学系统具有成像质量高、大视场、轻量化程度高等特点,能够更好地适应轻小型、低成本空间光学系统的应用要求,具有广泛的应用前景。以高斯光学和三反消像差理论为基础,设计了一款第三反射镜为自由曲面的离轴三反光学系统,焦距1 550 mm,视场3.60.45,相对孔径1:6.2,自由曲面的加入极大地提高了系统设计自由度和成像质量。设计结果表明,在有效视场内系统成像质量良好,fMTF优于0.43@111 lp/mm,系统最大波像差为0.049 (=632.8 nm),平均波像差RMS值为0.034 ,最大网格畸变0.9%,成像质量相对于子午面完全对称。系统的总长小于f'/3.1,高度小于f'/4.1,且系统的加工和装配公差较为宽松,易于实现。该设计结果对轻小型空间光学系统的设计具有一定的参考价值。

关 键 词:光学设计   离轴三反系统   自由曲面   公差分析
收稿时间:2018-07-17

Optical design of miniaturized and large field of view off-axis optical system based on freeform surface
Affiliation:1.Changchun Institute of Optics,Fine Mechanics and Physics,Chinese Academy of Sciences,Changchun 130033,China
Abstract:With the increasing development of space technology, space optical system with the characteristics of high-performance, miniaturization has become a new hotspot research in space optical fields. Off-axis three-mirror optical system has the advantage of high quality image, large field of view and high level of lightweight etc., which can better suit the application of miniaturized and low-cost space optical system and has broad application prospects. Based on the Gaussian optics and three-mirror aberration theory, the off-axis three-mirror with freeform surface of tertiary mirror was designed. The focal length was 1 550 mm, field of view was 3.60.45, relative aperture was 1:6.2, degrees of freedom and image quality were increased efficiently by the introduction of freeform surface. The design results show that system has a better performance in effective field of view, modulation transfer function value is above 0.43@111 lp/mm, wave-front error maximum value is 0.049 (=632.8 nm), RMS wave-front error value is 0.034 , maximum grid distortion value is 0.9%, and the imaging quality is complete symmetrical about the tangential plane. The total length of the optical system is less than f'/3.1, the height is less than f'/4.1, and is easily implemented because of the relatively loose tolerance about processing and assembling. The obtained results have a certain reference value for miniaturized space optical system.
Keywords:
点击此处可从《红外与激光工程》浏览原始摘要信息
点击此处可从《红外与激光工程》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号