Abstract

A new geometrical arrangement is proposed to improve performances of optical triangulation. Two scanners in synchronization allow a linear position sensor to be used for surface topography measurement. Besides a large increase in speed of measurement (approximately megahertz), the new geometry allows considerable reduction of the optical head size compared with usual geometries, so the shadow effects are reduced proportionally. It also provides a means to obtain a very large field of view without compromising on resolution. Geometrical analysis and experimental results are presented.

© 1984 Optical Society of America

Flying spot laser triangulation scanner using lateral synchronization for surface profile precision measurement

Hanlin Zhang, Yongjie Ren, Changjie Liu, and Jigui Zhu
Appl. Opt. 53(20) 4405-4412 (2014)

Influence of speckle on laser range finders

Réjean Baribeau and Marc Rioux
Appl. Opt. 30(20) 2873-2878 (1991)

Eye-safe laser scanner for range imaging

Marc Rioux, J. Angelo Beraldin, M. O’Sullivan, and L. Cournoyer
Appl. Opt. 30(16) 2219-2223 (1991)

Laser range finder approach based on a fieldable electro-optic dual optical frequency comb: a proof of concept

Julio E. Posada-Roman, Hania Angelina, Borja Jerez, Marta Ruiz-LLata, and Pablo Acedo
Appl. Opt. 56(22) 6087-6093 (2017)

Laser input scanner

H. D. Wolpert
Appl. Opt. 23(5) 665-669 (1984)