Li Shuangliang, Wang Di, Song Dezhen, Zou Jun
Department of Electrical and Computer Engineering, Texas A&M University, College Station, TX 77843, USA.
Department of Computer Science and Engineering, Texas A&M University, College Station, TX 77843, USA.
Sens Actuators A Phys. 2024 Dec;379. doi: 10.1016/j.sna.2024.115941. Epub 2024 Oct 7.
This paper reports an electromagnetic indirect-driving scanning mirror with an enlarged mirror plate ( × ) supported by high-strength polymer hinges for wide-field coaxial LiDAR (Light Detection and Ranging) applications. An indirect-driving mechanism was developed to achieve large tilting angle through mechanical amplification, while maintaining a relatively high resonance frequency of the enlarged mirror plate. A prototype mirror was designed, fabricated, and tested. A Hall scan position sensor was integrated to monitor the pose of the mirror in real time. The testing results show a coupled resonance frequency of 54.9 with an optical tilting angle of ± °, corresponding to a field of view (FoV) of 12 °. A wide-field coaxial LiDAR system was also built based on the indirect-driving scanning mirror, and 2D imaging was demonstrated.
本文报道了一种用于宽视场同轴激光雷达（光探测与测距）应用的电磁间接驱动扫描镜，其镜板（×）由高强度聚合物铰链支撑且尺寸增大。开发了一种间接驱动机制，通过机械放大实现大倾斜角，同时保持增大镜板相对较高的共振频率。设计、制造并测试了一个原型镜。集成了一个霍尔扫描位置传感器以实时监测镜的姿态。测试结果表明，耦合共振频率为54.9，光学倾斜角为±°，对应视场（FoV）为12°。还基于间接驱动扫描镜构建了一个宽视场同轴激光雷达系统，并展示了二维成像。
