提出了运用相移技术的光刀投影式测量３６０°回转物体三维轮廓的新方法。该方法对投影光刀引入正弦分布光场，利用相移技术对光刀投影狭缝进行相位计算，可得出各点的包裹相位分布，然后再利用光刀投影测量原理得到的高度信息对相位进行去包裹处理，从而得到具有较高精度的相位测量结果。最后根据相位与物体高度的几何关系，得到物体的三维轮廓数据。文中详细介绍了这一技术的原理及实验结果 A new method of measuring the 3D outline of a 360 ° rotating object by using the optical knife projection phase shifting technique is proposed. This method introduces a sinusoidal distribution of light field into the projection optical knife, and uses the phase shift technique to calculate the phase of the slit of the optical knife. The phase distribution of each point can be obtained. Then the height information obtained from the measurement principle of the optical knife is used to unwrap the phase Processing, resulting in a phase measurement with higher accuracy. Finally, according to the geometric relationship between the phase and the height of the object, the 3D contour data of the object is obtained. The paper details the principle of the technology and experimental results