大对称视场离轴三反系统设计  

Design of off-axis three-mirror system with large symmetric field of view

作　　者：黄淮 林峰 HUANG Huai;LIN Feng(Fujian Provincial Key Laboratory of Photonics Technology,Key Laboratory of Optoelectronic Science and Technology for Medicine(Ministry of Education),College of Photonic and Electronic Engineering,Fujian Normal University,Fuzhou 350007,China)

机构地区：[1]福建师范大学光电与信息工程学院医学光电科学与技术教育部重点实验室、福建省光子技术重点实验室,福建福州350007

出　　处：《应用光学》2023年第5期952-958,共7页Journal of Applied Optics

基　　金：福建省科技重大专项(2021YZ040012)。

摘　　要：离轴反射系统具有不产生色差、无中心遮拦、结构紧凑等特点,但受其非对称结构影响,其视场常常为线视场。基于Zemax设计了一种大对称视场的离轴三反系统,视场为13°×13°,相对孔径为1/5,焦距为800 mm,波长为400 mm~1000 mm,主镜和三镜为自由曲面,次镜为二次曲面。设计结果表明:对称视场离轴三反系统的点列图直径均方根小于5μm,80%能量在一个像元内,光学传递函数接近衍射极限,各项指标满足应用要求。The off-axis reflection system has the characteristics of no chromatic aberration,no central obscuration and compact structure,but due to its asymmetric structure,its field of view is often a linear field of view.An off-axis three-mirror system with a large symmetric field of view was designed based on Zemax.The field of view is 13°×13°,the relative aperture is 1/5,the focal length is 800 mm,and the wavelength is 400 mm~1000 mm.The primary mirror and the third mirror are free-form surfaces,and the secondary mirror is a quadratic surface.The design results show that the root mean square of spot diagram diameter of the proposed system is less than 5μm,80%of the energy is in the one pixel,the optical transfer function is close to the diffraction limit,and all the indicators meet the application requirements.

关 键 词：光学设计 空间光学 离轴三反系统 自由曲面 大视场 

分 类 号：TN202[电子电信—物理电子学] O439[机械工程—光学工程]