多孔掩模对统计独立散斑图像形成的影响分析

发布时间：2018-06-12 16:18

本文选题：激光光学 + 激光投影　；参考：《中国激光》2017年01期

【摘要】：基于叠加统计独立散斑图像的散斑抑制原理,设计了一个具有N个透光孔的掩模板,将其放置于成像透镜出瞳面上,理论研究了产生统计独立散斑图像所需的条件。在简化光学系统中,将散射片与探测面分别置于透镜成像共轭面上,通过系统实验,分析了多孔掩模板上相邻两个透光孔的不同中心间距以及单个透光孔孔径对统计独立散斑图像形成的影响,其中单个透光孔孔径也会影响散斑颗粒的大小。在不考虑实验装置对测试精度的影响下,实验结果与理论分析吻合。
[Abstract]:Based on the principle of speckle suppression of superimposed statistical independent speckle images, a mask with N transmittance holes is designed and placed on the pupil surface of the imaging lens. The necessary conditions for the generation of statistical independent speckle images are studied theoretically. In the simplified optical system, the scatterer and the detection surface are placed on the conjugate surface of the lens imaging, and the system experiment is carried out. The influence of the different center spacing of two adjacent transmissible holes on the formation of statistical independent speckle images and the pore diameter of a single transmission hole on the formation of statistical independent speckle images are analyzed. The size of speckle particles is also affected by the aperture of a single transmission hole. The experimental results agree well with the theoretical analysis without considering the influence of the experimental device on the test accuracy.
【作者单位】：中北大学山西省光电信息与仪器工程技术研究中心;中北大学仪器科学与动态测试教育部重点实验室电子测试技术重点实验室;
【基金】：国家自然科学基金(61471325,61405127) 山西省自然科学基金(2014021023-1) 山西省科技攻关项目(20140321002-02)
【分类号】：TN24

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