新体制激光雷达光纤扫描系统

为了提高激光成像雷达的帧频与激光点斑密度,介绍了光纤扫描装置的原理。光纤扫描激光雷达系统基于两套激光发接收对称的光纤束,其发射系统由圆形排列到线性排列、接收系统由线性排列到圆形排列;圆形排列激光束与扫描摆镜、直线排列光纤束与物镜系统分别构成发收光学系统,实现光束在空间的偏转和接收。该雷达的核心是光纤束与光学镜头耦合构成的发收光学系统以及相应的控制系统。重点分析了光纤的数值孔径、瞬时视场角、成像视场、光学耦合效率等光学系统参数设定方法,介绍了一种光学镜头设计方案及控制系统中MCU的功能和参数选择方法。该项研究结合了国内的光学超精细加工、精密光学装调以及同步控制技术水平等设定合理的参数,概念新、方法新,实现光纤扫描激光雷达还是可行的。

New fiber scanner system in ladar

To improve the frame frequency and density of laser spot of imaging ladar, the principle of fiber scanner device was introduced.The fiber scanner ladar system is based on two symmetrical receiving - sending fiber bundles, whose transmitting system is placed from circular to linear, and receiving system is placed from linear to circular. The receiving-sending optical system is composed of circular arranged laser beams, scanning lens, linear arranged fiber bundles and object lens system. The beams are deviate...