基于等光程原理的激光引信光学整形方法

由于受环境、空间、功耗等方面的限制,常规弹药激光引信难以采用传统光束整形方法实现回波聚焦。本文针对常规弹药激光引信目标回波能量低、探测距离有限这一问题,研究非球面光学设计理论,提出一种基于等光程原理的单级非球面光学整形方法。建立激光接收系统ZEMAX光学理论模型,对比分析不同条件下光学整形能力,仿真结果显示相对于传统单级球面光学接收透镜,单级非球面光学接收透镜能将整形光斑中心辐照亮度提高三倍。在理论分析基础上进行光束整形对比实验,测试不同条件下整形光斑尺寸以及分布情况,实验结果显示单级非球面光学接收透镜能有效压缩光斑,汇聚激光回波能量。

Optical shaping method for laser fuze based on aplanatism principle

Due to the limit of environmental,space,power consumption,conventional ammunition laser fuze is hard to achieve echo focus by using traditional beam shaping method.Aiming at the problem that the target echo energy of conventional ammunition laser fuze is low and the detection distance is limited,acorrding to aspheric optical design theory,a single-stage aspherical optical shaping method based on aplanatism principle is proposed.The ZEMAX optical theoretical model of laser receiving system is built to analyze the optical shaping capability under different conditions.Simulation results show that compared to the traditional single-stage spherical optical receiving lens,the center irradiation luminance of shaping spot can be enhanced by three times through the single-stage aspheric optical receiving lens.Based on the theoretical analysis,the beam shaping comparative experiments are done to test shaping spot sizes and its distributions under different conditions.Experimental results show that through the single-stage aspheric optical receiving lens,the spot can be effectively compressed and the laser echo energy can be gathered.