单模光纤相移三维轮廓测量术  

Three dimensional Profilometry Using a Single Mode Optical Fiber Phase shifting Method

作　　者：范华[1] 田丰[1] 谭玉山[1] 

机构地区：[1]西安交通大学机械学院激光红外应用研究所

出　　处：《中国激光》1998年第2期135-138,共4页Chinese Journal of Lasers

摘　　要：提出了一种新的计算机图像处理光栅投影三维轮廓测量系统，该系统用一分二单模光纤耦合器产生正弦光强分布的投影光栅场；将光纤一臂绕在压电陶瓷（ＰＺＴ）环引入相移。将该系统用于实际测量得到了满意的效果。该系统具有结构简单、体积小、重量轻、光栅条纹清晰并且光强正弦分布等优点，有很高的实用价值。In this paper, a novel three dimensional profilometric measurement system based on a computer aided image processing technique is presented. This system consists of a single mode optical fiber coupler with phase shifting as the grating projector. A piezoelectric (PZT) cylinder wrapped by one arm of the optical fiber coupler is utilized to introduce phase shift. Results have been obtained in the practical measurement with this measuring system. This system, owing to the advantages of quite simple optical configuration, extremely small size and light weight, high visibility and sinusoidal intensity distribution, would find high practical value in applications.

关 键 词：光纤耦合器 相移 轮廓术 测量 

分 类 号：TN622.06[电子电信—电路与系统]