Uniaxis rangefinder using contrast detection of a projected pattern

Toru Yoshizawa; Tomotaka Shinoda; Yukitoshi Otani

doi:10.1117/12.417217

12 February 2001 Uniaxis rangefinder using contrast detection of a projected pattern

Toru Yoshizawa, Tomotaka Shinoda, Yukitoshi Otani

Proceedings Volume 4190, Optomechatronic Systems; (2001) https://doi.org/10.1117/12.417217
Event: Intelligent Systems and Smart Manufacturing, 2000, Boston, MA, United States

Abstract

12 Many methods have been proposed for range finding systems to know the distance of the targets. We try to capture profiles of objects in addition to the distance of objects using optical principle. When a grating pattern is projected on to the object to be measured, the projected pattern is sharply observed on a focused plane. And the pattern blurs due to defocusing except on this focused plane. We detect contrast variation of the projected grating pattern and calculate the distance to the object and captures its shapes at the same time. This method features in using merely one optical axis in range finding system.

Citation Download Citation

Toru Yoshizawa, Tomotaka Shinoda, and Yukitoshi Otani "Uniaxis rangefinder using contrast detection of a projected pattern", Proc. SPIE 4190, Optomechatronic Systems, (12 February 2001); https://doi.org/10.1117/12.417217

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