计量光栅技术是一种先进的长度与角度自动测量技术。它通过光栅发讯器将机械位移转变成周期变化的光电讯号,并配合电子技术,以实现机器或仪器的位移数字测量、数字控制以及动态测试等。因此受到国内外的普遍重视,获得日益广泛的应用。 两片光栅重叠形成的莫尔条纹现象,是此种测 Metering grating technology is an advanced automatic measurement of length and angle technology. It transforms mechanical displacement into periodic optical signals through grating transmitters, and cooperates with electronic technology to realize displacement digital measurement of machine or instrument, digital control and dynamic test. Therefore, it has received the widespread attention both at home and abroad and has been widely used. Moire fringe pattern formed by the overlap of two gratings is the kind of measurement