采用衍射主镜的大口径激光雷达接收光学系统  

Large aperture lidar receiver optical system based on diffractive primary lens

作　　者：朱进一 谢永军[1] 

机构地区：[1]中国科学院西安光学精密机械研究所瞬态光学与光子技术国家重点实验室,陕西西安710119 [2]中国科学院大学,北京100049

出　　处：《红外与激光工程》2017年第5期143-150,共8页Infrared and Laser Engineering

摘　　要：衍射光学系统在大口径激光雷达接收器应用方面很有潜力。分析了衍射主镜引入的负色散对激光雷达成像质量的影响。讨论了插入高色散玻璃和基于Schupmann原理的两种消色差方案的优劣。基于Schupmann原理的消色差系统质量轻、像质好,系统光透过率在60%以上。设计了1 m口径、f/8、最大视场角1 mrad的激光雷达接收光学系统。成像质量接近衍射极限。Diffractive optical systems are promising in large aperture lidar receiver applications. The negative dispersion effect on lidar image quality caused by the diffractive primary lens was analyzed. Two chromatic aberration correcting methods, inserting high dispersion glass and adopting Schupmann theory, were discussed. An achromatic system based on Schupmann theory was lightweight, and provided perfect image quality. And the system light transmittance was over 60%. A design of lidar receiver optical system with lm aperture and 1 mrad max FOV was demonstrated, and the system f/# was 8. The image quality attained diffraction limit approximately.

关 键 词：光学设计 激光雷达 衍射透镜 消色差 

分 类 号：O43[机械工程—光学工程]