用于非接触速度测量的柱面光栅优化  

The Optimization of Lenticular Lens Used for Non-contact Speed Measurement

作　　者：马任德[1] 孙超[1] 刘建贞[1] 

机构地区：[1]曲阜师范大学物理工程学院,山东省曲阜市273165

出　　处：《曲阜师范大学学报（自然科学版）》2012年第1期77-80,共4页Journal of Qufu Normal University(Natural Science)

基　　金：山东省自然科学基金项目(ZR2010AM011)

摘　　要：首次提出利用柱面光栅进行图像分割来实现速度测量.为了便于对经光栅分割之后的图像光强进行探测,理论计算发现:通过增大柱面曲率半径与光栅周期的比值,或减小光栅材料与环境折射率比值的方法,可减小衍射光强空间分布;但当光栅周期较小时,被分割图像的衍射光强重合部分变大,表明用于非接触速度测量的柱面光栅周期不能太小.Using Lenticular lens for image segmentation to achieve the speed measurement is proposed for the first time. In order to facilitate the detection of the segmented image light intensity, by theoretical calculations, increasing the ratio of curvature radius and grating period or by reducing the ratio of refractive index of the gratings material and environment can effectively reduce the spatial distribution of the diffraction light intensity, when the period of the lenticular lens is on the small side, the overlap light intensity that generated by the diffraction after images segmentation increases. It means that the period of the Lenticular lens used for non-contact speed measurement should not be too small.

关 键 词：柱面光栅 夫琅禾费衍射 非接触速度测量 图像分割 

分 类 号：TH741.6[机械工程—光学工程]