具有二次成像的紧凑型离轴三反光学系统设计  

Design of a Compact Off-Axis Three-Mirror Optical System with Secondary Imaging

作　　者：潘思豪 潘枝峰[2] 陈建发[2] PAN Sihao;PAN Zhifeng;CHEN Jianfa(Science and Technology on Electro-Optical Control Laboratory,Luoyang 471000 China;Luoyang Institute of Electro-Optical Equipment AVIC,Luoyang 471000 China)

机构地区：[1]光电控制技术重点实验室,河南洛阳471000 [2]中国航空工业集团公司洛阳电光设备研究所,河南洛阳471000

出　　处：《电光与控制》2020年第1期90-93,共4页Electronics Optics & Control

摘　　要：从杂散光抑制与体积压缩的需求出发,设计出具备二次成像、实出瞳的紧凑型离轴三反光学系统。给出了一种二次成像离轴三反光学系统的初始结构搭建思路,并运用自由曲面优化系统,依据该方法设计出了焦距130 mm、F数1.3、线视场5°×0.1°的离轴三反光学系统。系统成像质量接近衍射极限,具有二次成像和实出瞳的杂光抑制特性,理论上可以实现100%冷光阑效率,具有超小F数1.3的紧凑型特点,可用于航空航天探测等对杂光抑制要求较高的军事领域。In needs of stray light suppressing and system volume compression a compact system of off-axis three-mirror structure with secondary imaging and real exit pupil is designed.A method of constructing the initial structure of the off-axis three-mirror optical system with secondary imaging is given.The optical system is optimized with freeform surfaces based on the initial structure and the off-axis three-mirror optical system with the focal length of 130 mm F-number of 1.3 the linear FOV of 5°×0.1°is designed.The system imaging quality is close to the diffraction limit the system has the characteristics of stray light suppressing with secondary imaging and real exit pupil and the 100%cold stop efficiency can be realized theoretically.The system is compact with the super-little F-number of 1.3 and can be applied to such military fields as aviation and aerospace detection where there are high demands of stray light suppressing.

关 键 词：红外探测系统 离轴三反光学系统 二次成像 实出瞳 自由曲面 杂散光抑制 

分 类 号：TN215[电子电信—物理电子学]