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一、莫尔条纹的形成1.概述当二块周期为P=f(x)的光栅面对面叠合、并使栅线以微小角度0交叉时,在交叉角的角平分线上便出现周期为MP的亮度变化花样,通常叫做莫尔花样。光栅为等间隔时,莫尔花样的等亮度线为一直线并与交叉角的角平分线垂直;随着光栅之间(沿X方向)的相对位移,等亮度线则沿着角平分线移动,这便是典型的横向莫尔条纹(见图1)。莫尔条纹的形成原理可有不同解释:一
A Moiré fringe formation 1. Overview When two grating period P = f (x) of the face-to-face overlap, and the gate line at a slight angle 0 cross, the angle of intersection of the angle bisector will appear on the cycle of The pattern of change in brightness of the MP, often called the Moore pattern. When the rasters are equally spaced, the equal brightness lines of the moiré pattern are straight and perpendicular to the angle bisector of the crossing angle; as the relative displacement between the rasters (in the X direction) the isostrons move along the angle bisector , This is a typical horizontal Moiré fringe (see Figure 1). Moiré fringe formation principle can have different explanations: one