测距激光的能量分布及其对光轴校正的影响

Energy Distribution of Ranging Laser and Effect on the Correction of Optical Axis

利用涂料墙面作为反射目标,采集、处理和分析脉冲激光测距机发射激光的光斑能量分布。结果表明:能量环带占比从中心到边沿呈现由高到低的变化趋势,80%以上的激光能量集中在占激光光斑总面积60%的中心区域内,而且某些型号的测距机激光能量分布存在较明显的区域不均衡性。因此,测距机要达到最大测程的指标要求,相关光轴的平行性校正必须更加严苛,而且光轴平行性校正方式也应加以改进。

Using rendered wall as the reflecting target, the facular energy distributions of laser from laser rangers was collected, disposed and analyzed. It was found that energy density decreases from center to edge of the laser area, more than 80 percent laser energy was concentrated on the center area which only occupies 60 percent of the total laser area, and energy distributions of some laser rangers were obviously region-disproportion;for ensuring range of laser ranger, correction for parallelism of optical axis must be more rigorous, and the correction system should be modified.