微型镜头对辐照激光的空间调制特性
发布时间：2018-10-25 19:21
【摘要】：传统的光学镜头探测主要基于回波强度(猫眼效应)来实现,但对于微型镜头而言,反射回波中存在明显的衍射现象,因此对微型镜头光阑衍射效应的研究成为一个重要的研究方向。基于角谱衍射理论,研究了微型镜头对辐照激光的空间调制特性,推导了回波光场分布的公式;仿真研究了探测距离、入射角度和光阑直径对衍射光场分布的影响,以及不同光阑直径时的最大可探测入射角,并利用搭建的激光主动探测系统对回波衍射现象进行了探测。结果表明,实际探测的衍射图样与仿真图样吻合得较好,所提理论能够准确地预测微型镜头探测回波的衍射现象。
[Abstract]:The traditional optical lens detection is mainly based on the echo intensity (cat's eye effect), but for the miniature lens, there are obvious diffraction phenomena in the reflected echo. Therefore, the study of the diffraction effect of micro lens aperture has become an important research direction. Based on the theory of angular spectrum diffraction, the spatial modulation characteristics of laser irradiated by microlens are studied, and the distribution formula of echo light field is derived. The effects of detection distance, incident angle and aperture diameter on the diffraction field distribution and the maximum detectable incident angle at different apertured diameters are studied by simulation. The echo diffraction phenomena are detected by using a laser active detection system. The results show that the diffraction pattern is in good agreement with the simulation pattern, and the theory proposed can accurately predict the diffraction phenomenon of the microlens detection echo.
【作者单位】： 北京理工大学光电学院;
【分类号】：TB851
，
本文编号：2294597
[Abstract]:The traditional optical lens detection is mainly based on the echo intensity (cat's eye effect), but for the miniature lens, there are obvious diffraction phenomena in the reflected echo. Therefore, the study of the diffraction effect of micro lens aperture has become an important research direction. Based on the theory of angular spectrum diffraction, the spatial modulation characteristics of laser irradiated by microlens are studied, and the distribution formula of echo light field is derived. The effects of detection distance, incident angle and aperture diameter on the diffraction field distribution and the maximum detectable incident angle at different apertured diameters are studied by simulation. The echo diffraction phenomena are detected by using a laser active detection system. The results show that the diffraction pattern is in good agreement with the simulation pattern, and the theory proposed can accurately predict the diffraction phenomenon of the microlens detection echo.
【作者单位】： 北京理工大学光电学院;
【分类号】：TB851
，
本文编号：2294597
本文链接：https://www.wllwen.com/guanlilunwen/gongchengguanli/2294597.html
