紧凑型自由曲面离轴三反系统设计  

Design of compact freeform off-axis three-mirror system

作　　者：李元[1] 李艳[1] 何玉兰[1] 宫经珠[1] 王楠茜[1] 强华[1] 康文莉[1] Li Yuan;Li Yan;He Yulan;Gong Jingzhu;Wang Nanxi;Qiang Hua;Kang Wenli(Xi＇an Institute of Applied Optics,Xi＇an 710065,China)

机构地区：[1]西安应用光学研究所,陕西西安710065

出　　处：《应用光学》2018年第6期780-784,共5页Journal of Applied Optics

摘　　要：针对小型化反射式光学系统的设计要求,采用新型的离轴三反光路形式和自由曲面,实现了F#为1.8,对角线视场角7.5°的紧凑型自由曲面离轴三反系统,光线在系统内多次重叠,系统波像差全视场平均值为0.017λ(λ=10μm)。相比非球面离轴三反系统,该系统具有体积小、透过率高、大视场、无中心遮拦、多波段成像等优点。Aiming at the design requirement of miniature reflective optical system,the new offaxis threemirror optic path and freeform surface were adopted, the compact freeform threemirror was realized with 1.8 F# and 7.5° diagonal field of view（FOV）.The light overlaps multiple times in the system, and the full FOV average of the system wave aberration is 0.017 λ （λ= 10 μm）. Compared with the aspherical offaxis threemirror system, the system has the advantages of small size, high transmittance, large FOV, no central obscuration, and multiband imaging,etc.

关 键 词：光学设计 自由曲面 波像差 离轴三反系统 

分 类 号：TN21[电子电信—物理电子学]