大视场大相对孔径近红外观测相机光学系统设计  

Optical system design used for the near infrared remote sensing with large field of view and small F number

作　　者：姚罡[1] 汤天瑾[1] 黄颖[1] 

机构地区：[1]北京空间机电研究所,北京100076

出　　处：《红外与激光工程》2013年第S01期107-110,共4页Infrared and Laser Engineering

基　　金：北京空间机电研究所自主研发课题

摘　　要：设计了一种用于近红外观测相机的大视场大相对孔径光学系统,它全部采用球面透镜。分析了光学系统的设计难点及相关光学系统结构型式的特点。最终采用了反摄远型光学系统的结构型式,该光学系统的视场为100°,F数为1.5,焦距为5 mm,光谱范围为0.84～0.97μm。光学系统的传递函数全视场大于0.65(@77 lp/mm),相对畸变小于15%,像面相对照度不均匀性小于10%。由此可见,该光学系统的成像质量满足指标要求,并且具有相对畸变较小及各视场相对照度均匀等特点。An optical system with large field of view and small F number which was used for the near infrared re- mote sensing was designed. Its surfaces were spherical. The difficulties of the design and the characteristics of the candidates were analyzed. A reverse telephoto optical system was designed of which the field of view was 100°, F number was 1.5, focal length was 5 ram, and the spectral range was from 0.84 μm to 0. 97 μm. The MTF of the whole field of view was bigger than O. 65 （@ 77 lp/mm） , relative distortion was smaller than 15% , and the relative illumination uniformity was smaller than 10%. The image quality meets the requirements, and it has the character- istics of small relative distortion and uniformed image illumination and etc.

关 键 词：遥感 光学系统设计 大视场大相对孔径 反摄远型 

分 类 号：TN216[电子电信—物理电子学]