【摘要】 提出一种用液晶光阀把计算机模拟正弦分布且具有一定相移量的多幅干涉条纹投影到三维物体上 ,通过CCD采集被物体调制的变形条纹 ,在同一位置用计算机窗口来控制相移 ,实现对物体的光学位相三维轮廓测量 ,同时针对测量系统误差进行分析和讨论。更多还原

【Abstract】 A method for big scale object measurement is presented without phase shifter in this paper.The sinusoidal gray fringes are simulated by computer and projected on the object by the liquid-crystal light valve in this method,and the phase-shifting is controlled by computer.Then deformed fringes modulated by object is collected by CCD camera and processing by computer to realize optical 3-D phase measurement for big scale object.At the same time measuring systematic error is analyzed and discussed.更多还原