机载双视场中波红外光学系统优化设计  

Design of an airborne dual field-of-view middle wave infrared optical system

作　　者：董科研[1] 王健[2] 孙强[2] 王洪亮 李全熙[4] 姜会林[1] 

机构地区：[1]长春理工大学空间光电技术研究所 [2]中国科学院长春光学精密机械与物理研究所 [3]第二炮兵驻北京军代室 [4]中国人民解放军海军91329部队装备部

出　　处：《中国光学》2012年第6期596-601,共6页Chinese Optics

基　　金：教育部博士学科重点专向科研基金资助项目(No.20070189001);国家自然科学基金资助项目(No.61077056)

摘　　要：为了满足机载红外搜索与跟踪系统的实际使用要求,根据变焦系统的基本理论及中波红外系统的特点,设计了320 pixel×256 pixel的中波制冷型焦平面阵列探测器的双视场中波红外光学系统。系统采用了二次成像结构,并在系统的第一像面位置安装光阑,以此减小杂散光对系统的影响。设计结果表明:系统具有100%冷光栏效率,在仅移动一片透镜的情况下可实现在800和400 mm的两档变焦,系统F数为4且恒定不变,像面保持稳定,系统场曲<0.04 mm,畸变<2.5%,在探测器的Nyquist频率16 lp/mm处光学传递函数的峰值>0.5,表明光学系统的像质满足使用要求。In order to meet the practical requirement of airborne infrared searching and tracking systems, a dual Field-of-View （FOV） middle wave （MW） infrared optical system is designed based on the MW cooled detector with 320 pixel x 250 pixel and a staring focal plane array. The system adopts the secondary imaging structure and a shield is installed in the first image surface station to reduce the stray light effect. The design results show that the system has a 100% cold shield efficiency ; F number of the system keeps a constant as d and the image surface remains stable when only one piece of the optical lens is moved to switch the focus length between 800 mm and 400 mm; the field curvature and the distortion are less than 0.04 mm and 2. 5 %, respectively, and the MTF is more than 0. 5 at 16 lp/mm. Obtained results demonstrate that the image quality meets the operational requirement.

关 键 词：中波红外光学系统 光学设计 双视场 机载 搜索与跟踪系统 

分 类 号：TN216[电子电信—物理电子学]