全反射式红外变焦光学系统设计  

Design of all-reflective zoom IR optical systems

作　　者：冯俐铜 孟军合[1] 张振[1] 陶玉[1] 顿雄 朱立新[1] 吴晓靖[1] 张晨钟[1] 杨继兴[1] 雷丽[1] 李景[1] 陈鑫[1] 赵侃[1] 

机构地区：[1]天津津航技术物理研究所天津市薄膜光学重点实验室,天津300192

出　　处：《红外与激光工程》2012年第10期2749-2752,共4页Infrared and Laser Engineering

基　　金：国防预研项目

摘　　要：针对透射式红外变焦光学系统结构复杂,无热化设计较难等问题,提出全反射式红外变焦光学系统设计。讨论了该光学系统的变焦理论,对反射变焦系统初始结构进行了高斯解分析,给出了其初始结构的计算方法。设计了一离轴三反射镜红外变焦系统,系统焦距为300～600 mm,F数为2.1,工作波段为8～12μm,采用某型非制冷长波红外探测器,截止频率为14 lp/mm,系统变焦过程近似线性连续,像面稳定,像质良好。With the limit of IR optical materials, optical systems with a simple configuration, it is difficult to design athermalized refractive zoom IR All-reflective zoom IR optical systems could be lightweighted, compact and free of chromatic aberrations, whose athermalization is easy, and reflective optical systems can be unobscured by offsetting mirrors. Basic theory of reflective zoom optical systems was discussed. Gauss solution of initial configurations of reflective zoom systems was analyzed, and the method of calculating initial configurations was given. An off-axis three-mirror reflective zoom IR optical system was designed, whose effective focal length varied from 300 mm to 600 mm, F number is 2.1, and working wavelength was between 8μm and 12 μm. The system used an uncooled LWIR detector with a cutoff frequency as 14 lp/mm. The reflective zoom system has a stable image plane and good imaging quality, whose process of zooming is

关 键 词：红外光学系统 变焦系统 反射镜 

分 类 号：TN21[电子电信—物理电子学] O43[机械工程—光学工程]