Title :
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
fDate :
2/1/1992 12:00:00 AM
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;
Journal_Title :
Instrumentation and Measurement, IEEE Transactions on
