【摘要】 针对LED光源气溶胶探测光学雷达光能利用率偏低的问题,设计一种新型的雷达结构。它由双自由曲面准直匀光透镜和带有非球面镜的Kepler系统二级准直系统构成。准直透镜和Kepler系统前组单透镜使光聚焦于光阑处,再由带有非球面镜的透镜组准直出射。设计的仿真结果表明:光束发散角控制在3°以内,光能利用率达到43.027%,机械总长为207mm,与现有结构相比,光能利用率提高了12%,结构更为紧凑。更多还原

【Abstract】 For the fact that the LED light source aerosol detection optical radar light energy utilization is low,the existing optical collimation structure is improved,which consists of a double free-form surface collimating uniform lens and a modified Kepler system secondary collimation system.The collimating lens and the Kepler system front single len focus on the light at the pupil,and it is collimated by a lens assembly with an aspherical mirror.The simulation results show that the beam divergence angle is controlled within 3°,that the light energy utilization rate is up to 43.027% and that the total mechanical length is 207 mm.Compared with the existing structure,the light energy utilization rate is increased by 12%,with the structure being more compact.更多还原