【摘要】 本文提出了云纹理论位置面和形成实际云纹的次影栅的概念。在此基础上，推导 了离面位移计算的一般公式；提出了斜率、云纹绝对级数及非整数级云纹补偿的计算 公式和实验方法。本文对工作〔１〕作了若干新的补充，使影栅云纹法更趋完善。更多还原

【Abstract】 This paper presents some new concepts about the theoretical position-sur- face of moire-fringes and the second shadow grid. Based on these concepts, the paper derives the hasic equation which is used to calculate the out-plane displacements. In addition, several calculating formulas and experimental methods to determine the slope, the absolute fringe order and the fractional fringe order of the moire fringe pattern are given. So that the work of ref〔1〕 about the shadow-moire method is developed and refined.更多还原