光电技术应用, 2011, 26 (2): 21, 网络出版: 2011-07-01
空间相机共轴三反红外光学系统设计
Design of Coaxial Three-mirror Infrared Optical System for Space Camera
空间相机 共轴三反 长焦距 宽视场 光学系统设计 space camera coaxial three-mirror long focal length wide view field design of optical system
摘要
针对空间光学系统长焦距、大视场、轻质量、小外形尺寸、大相对孔径、高成像质量的特点和发展趋势, 利用ZEMAX 求解并优化空间相机共轴三反光学系统的结构参数, 设计出了焦距为 5 000 mm, F 数为 10 的共轴三反射光学系统。设计结果表明: 该系统视场角达8°, 空间频率为50 lp/mm, 调制传递函数值均大于0.4, 接近衍射极限, 满足高分辨率空间相机不同的使用要求。该设计对空间相机红外光学系统结构选型、设计与制造具有一定的理论指导作用和意义。
Abstract
The developing trend and characteristics of the space optical system are long focal length, large view field, light weight, small dimension, large relative aperture and high image quality. The structural parameters of the coaxial three-mirror system can be solved and optimized by ZEMAX. The coaxial three-mirror system with focal length of 5 000 mm and F number of 10 is designed. The result indicates that the field of view of the system is 8°, and MTF is higher than 0.4 at 50 lp /mm. The image quality of the optical system approaches the diffraction limit, and can meet the different requirements of high-resolution space camera. This design has a theoretical guidance and significance for the design and selection of structure as well as manufacture of space camera IR optical system.
袁涛, 熊衍建, 吴晗平. 空间相机共轴三反红外光学系统设计[J]. 光电技术应用, 2011, 26(2): 21. YUAN Tao, XIONG Yan-jian, WU Han-ping. Design of Coaxial Three-mirror Infrared Optical System for Space Camera[J]. Electro-Optic Technology Application, 2011, 26(2): 21.