光学精密工程2025，Vol.33Issue(4)：521-531,11.DOI:10.37188/OPE.20253304.0521
小行星地形探测激光雷达接收光学系统设计
Design of receiving optical system for asteroid terrain detection LiDAR
摘要
Abstract
To ensure that LiDAR met the requirements of temperature range and vacuum environment in the detection of extraterrestrial terrain and to solve technical problems such as detection blind spots,small detection range,and difficult accurate alignment of the illumination array and pixel array,this paper pro-posed a receiving optical system based on a transversal mirror,multi-curvature spherical lens,and flat glass.The common optical axis of the transmitting optical system and the receiving optical system was re-alized by placing a reflector with 80%reflectivity at 45°.The blind detection area is avoided by using the characteristics of different radii of curvature in different aperture regions of the multi-curvature spherical lens,and an ultra-wide detection range is realized.Through the optimization of the lens material and lens distance tolerance,the thermal insensitive characteristics of the optical system and the precise control of distortion and focal length are realized.The test results show that the receiving optical system can achieve a field of view of Ø1.91°,a super-wide working distance of 30～300 m,a working temperature range of 0～40℃,and can adapt to two working environments of vacuum and atmospheric pressure,and has been successfully applied to the asteroid terrain detection lidar.关键词
激光雷达/接收光学系统/光学设计/多曲率球面透镜Key words
laser radar/receiving optical system/optical design/multi-curvature spherical lens分类
物理学引用本文复制引用
张运方,王立,朱飞虎,郑岩,陈建峰,洪帅,曹哲,张东来,史广青,李林..小行星地形探测激光雷达接收光学系统设计[J].光学精密工程,2025,33(4):521-531,11.基金项目
国家自然科学基金(No.2004A10403021) （No.2004A10403021）
北京市科技新星计划(No.Z211100002121076) （No.Z211100002121076）
国家重点研发计划(No.2021YFB3203100) （No.2021YFB3203100）
