【摘要】 介绍了横向莫尔条纹的成因及特性,分析了光栅的泰伯特像和透镜焦面的关系,根据光栅泰伯特像对谱面的对称性原理,提出了测量透镜焦距的方法。这种测量法设备简单,操作容易,特别适用于像差小的正透镜。更多还原

【Abstract】 This paper analyzed the formation cause and characteristics of Moire fringe,discussed the relation between Talbot image of a grating and the focal plane of a lens,and proposed a method of measuring the focus of lens according to the theory that Talbot image is symmetrical to Fourier spectrum plane.更多还原