1.引论利用全息实时干涉技术测量直线度的新方法已取得新的进展。其原理方法是一个工作台置于导轨上并沿其移动,当工作台位移时就有很多等倾干涉条纹产生。依据这些干涉条纹的形状和数量即可作定性、定量的测量。这个系统的优点是,在垂直移动路程的平面内进行测量,而当作横向位移时,二维方向(水平和垂直方向)的直线度也同时能够 1. INTRODUCTION New progress has been made in the new method of measuring straightness using holographic real-time interferometry. The principle method is to place a table on the guide rail and move along it, when the table displacement there is a lot of equal interference fringes. Based on the shape and number of these interference fringes, qualitative and quantitative measurements can be made. The advantage of this system is that measurements are made in the plane of the vertical path of travel, whereas straightness in the two-dimensional direction (horizontal and vertical) is also simultaneously