Compact and high-precision range finder with wide dynamic range and its application

Author

Shinohara, Shigenobu ; Yoshida, Hirofumi ; Ikeda, Hiroaki ; Nishide, Ken-ichi ; Sumi, Masao

Author_Institution

Dept. of Electron. Eng., Shizuoka Univ., Hamamatsu, Japan

Volume

41

Issue

1

fYear

1992

fDate

2/1/1992 12:00:00 AM

Firstpage

40

Lastpage

44

Abstract

Described is a new range finder using a self-mixing laser diode (SM-LD). The range finder has a high accuracy of ±0.15% and a wide dynamic range of 0.2-1 m using only one sensor head. Compared to ultrasonic range finders, the light beam of this laser range finder can be focused and scanned. The feasibility study shows a possible application of the range finder to a visual sensor of a robot. The proposed range finder has been successfully applied as an infrared (IR) active type range finder of a single-lens reflex camera

Keywords

computer vision; distance measurement; image sensors; industrial robots; infrared detectors; measurement by laser beam; IR active range finder; auto focus camera; dynamic range; error reduction; factory automation; feasibility; high-precision range finder; industrial robot; self-mixing laser diode; shape detection; single-lens reflex camera; visual sensor; Cameras; Diode lasers; Dynamic range; Laser beams; Lenses; Robot vision systems; Rough surfaces; Surface emitting lasers; Surface roughness; Wavelength measurement;

fLanguage

English

Journal_Title

Instrumentation and Measurement, IEEE Transactions on

Publisher

ieee

ISSN

0018-9456

Type

jour

DOI

10.1109/19.126628

Filename

126628