Linear optical triangulation measurement system and applications

• Main Authors: Yi-shu Deng, 鄧亦書
• Other Authors: Rong-seng Chang
• Format: Others
• Language: zh-TW
• Published: 2009
• Online Access: http://ndltd.ncl.edu.tw/handle/32020018581920194628

碩士 === 國立中央大學 === 光電科學研究所 === 97 === This study develops a new linear optical triangulation measurement system by projecting a laser point onto a cylindrical lens to form a long linear laser beam. We project this linear laser beam on the surface of objects, and capture image information due to surface deformation by capture device , then transfer this image to computer. Finally, we use image analysis software to process this image , so that, we can measure contour information and the displacement information of surface of objects. After a series of alignment experiments, proof that linear optical triangulation measurement system is a reliable system. Compare with old triangulation measurement system, linear optical triangulation measurement system can measure up to 640 data points in a single measurement progress at the same time, and resolution of this system is 10.20μm (0.1pixel). The system can apply to analysis of surface contours, such as the lens profile measurement ,size measurement, and pulse measurement of Chinese medicine. It has an advantage of non-contact measurement, and it also can prevent surface damage from process of measurement.