5^×光学补偿长波红外连续变焦物镜系统  

Optically Compensated LWIR Zoom Objective with Magnification of 5^×

作　　者：陶亮[1] 赵劲松[1] 

机构地区：[1]昆明物理研究所,云南昆明650223

出　　处：《红外技术》2008年第4期210-213,共4页Infrared Technology

基　　金：十一五兵器预研项目(404050301)

摘　　要：介绍了一个变倍比5×的长波红外连续变焦物镜系统的设计结果,该系统采用光学补偿的变焦方式。光学系统的F#和探测器的相匹配,恒定为2,冷屏效率100%。对4个视场严格校正了像差,各个视场的MTF曲线均接近衍射限。采用二次成像方式对光学系统的横向尺寸进行了约束,通光孔径被约束在φ134 mm以内。为了进一步减小系统的轴向尺寸,对系统的光路进行了折转。光路折转两次后,系统的体积约为290 mm×165 mm×140 mm。An optical compensation LWIR zoom objective with magnification of 5^× is presented. The optical system has a constant F number of 2 which matches the detector＇s and the cold stop efficiency is equal to 100%. The aberrations of four FOVs are well corrected, and the MTF curves of each FOV are closed to the diffraction limited. By re-imaging, the diameter of the aperture is constrained within134 mmo To minimize the length, the optical path is folded twice, so that the volume is about290 mm X 165 mm X 140 mm.

关 键 词：光学系统 长波红外物镜系统 连续变焦红外物镜系统 光学补偿 二次成像 

分 类 号：TN21[电子电信—物理电子学]