一、前言计量光栅技术或莫尔条纹技术是近二十几年来发展起来的一种新技术。光栅早在一百多年以前已经开始被人们应用于光谱分析、测定光波波长等方面,主要是利用光栅的衍射现象。直至本世纪五十年代,方始应用于机床和计量等方面,主要是利用光栅的莫尔条纹现象。由于光栅具有一系列优点, I. Introduction Metering grating technology or moiré fringe technology is a new technology developed over the past two decades. As early as one hundred years ago, the grating has been used by people in spectral analysis, determination of light wavelength and so on, mainly using the grating diffraction phenomenon. Until the fifties of this century, Fang began to apply to machine tools and measurement, etc., mainly the use of grating Moire phenomenon. As the grating has a series of advantages,