Title :
Compact and high-precision range finder with wide dynamic range using one sensor head
Author :
Shinohara, Shigenobu ; Yoshida, Hirofumi ; Ikeda, Hiroaki ; Nishide, Ken-ichi ; Sumi, Masao
Author_Institution :
Shizuoka Univ., Hamamatsu, Japan
Abstract :
A range finder that uses a self-mixing laser diode is described. The range finder has an accuracy of ±0.13% and a dynamic range of 0.2 m to 1 m and uses only one sensor head. Unlike 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 the visual sensor of a robot. The finder has been successfully applied as an IR active-type range finder of a single-lens reflex camera
Keywords :
distance measurement; image sensors; infrared detectors; measurement by laser beam; 0.2 to 1 m; IR active range finder; focused light beam; laser range finder; light beam; robot; scanned light beam; self-mixing laser diode; semiconductor laser; sensor head; 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;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1991. IMTC-91. Conference Record., 8th IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
0-87942-579-2
DOI :
10.1109/IMTC.1991.161557
