一种用于激光雷达的微振镜设计
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A design of micro scanning mirrorbased on laser radar system
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    摘要:

    为了满足激光雷达系统高线数和远距离探测的技术要求,提出了一种用于车载激光雷达系统的电磁式激光微振镜扫描机构,反射镜直径为12mm,微振镜采用TC4钛合金材料,提出了“工形”的机械结构方案,利用Nastran软件力学仿真分析,并搭建试验平台测试了微振镜的偏转角度和谐振频率等性能。实验结果表明:激光微振镜的一阶谐振频率为298 Hz,最大偏转角度为812°,满足技术要求,相比于传统MEMS振镜,在保证高扫描频率的同时,提高了通光口径,对激光雷达的进一步产业化发展有重要意义。

    Abstract:

    In order to meet the technical requirements of high line count and long distance detection of lidar systems,an electromagnetic laser micro scanning mirror mechanism for hybrid lidar systems is proposed.The mirror diameter is 12mm,and the micro scanning mirror is made of TC4 titanium alloy material,and the "I shaped" mechanical structure scheme is proposed.Nastran software is used for mechanical simulation analysis,and a test platform is built to test the performance such as deflection angle and resonance frequency of the micro scanning mirror The experimental results show that the first order resonance frequency of the laser micro scanning mirror is 298 Hz,and the maximum deflection angle is 8.12°,which satisfying the technical requirements.Compared with traditional MEMS scanning mirrors,it ensures high resonance frequency and improves the optical aperture,,which is of great significance to the further industrialization development of lidar.

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陆英.一种用于激光雷达的微振镜设计[J].激光与红外,2022,52(6):900~904
LU Ying. A design of micro scanning mirrorbased on laser radar system[J]. LASER & INFRARED,2022,52(6):900~904

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  • 最后修改日期:2021-10-25
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  • 在线发布日期: 2022-06-24