一种基于光纤阵列的激光照明方法

An illumination method based on fiber array

提出一种用于激光三维成像的均匀光照明系统,通过仿真实验验证了系统的有效性。光纤脉冲激光器发射窄脉冲红外激光光束经过光纤分路器后,出射64路能量相同的激光光束,每一路激光光束从光纤阵列出射,出射阵列置于发射光学系统焦点前后,形成点阵照明,被目标物反射的激光光束经接收光学系统接收后,成像于APD面阵探测器之上,像元和点光源一一对应。解决了传统照明系统存在的光能分布不均匀和激光能量利用率低的问题。

An uniform illumination system based on Laser 3 Dimaging is designed and the validity of the system is proved by taking simulation experiments.64 paths of laser beam with average energy are emitted after the narrow infrared laser pulse emitted by fiber laser device passing through the fiber splitter.The exit array is placed around the focus spot of the optical system to produce dot-array lightening.The laser beam is reflected by target incidents on the receiving system,and then images in APD detector array,where each detection pixel corresponds to each point light source.The system designed can uniformize the light distribution and enhance the utilization efficiency of the laser light.