Laser Trianglation Displacement Measurement Method Using Prism-Based Optical Structure

Author

Haibo, Zhang ; Hui, Zhao ; Wei, Tao ; Zhanbin, Wang

Author_Institution

Dept. of Instrum. Sci.&Eng., Shanghai Jiao Tong Univ., Shanghai

fYear

2008

fDate

21-24 Sept. 2008

Firstpage

956

Lastpage

960

Abstract

This paper presented a novel method using prism-based optical structure to correct the nonlinear problem of Laser Triangulation Displacement Measurement (LTDM). The nonlinearity existed in the common use of LTDM, especially in the wide range measurement. In this paper, a geometric model of the relation between object displacement and image position was built by theoretical derivation. Then two groups of contrast experiments were designed and the results showed the nonlinear problem was significantly improved.

Keywords

displacement measurement; measurement by laser beam; optical images; optical prisms; LTDM; geometric model; image position; laser trianglation displacement measurement; nonlinear problem; object displacement; prism-based optical structure; Charge coupled devices; Displacement measurement; Geometrical optics; Laser beams; Laser modes; Laser theory; Lenses; Nonlinear optical devices; Nonlinear optics; Optical sensors; displace measurement; prism; trianglation;

fLanguage

English

Publisher

ieee

Conference_Titel

Robotics, Automation and Mechatronics, 2008 IEEE Conference on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-1675-2

Electronic_ISBN

978-1-4244-1676-9

Type

conf

DOI

10.1109/RAMECH.2008.4681438

Filename

4681438