Title :
A scanning range finder using the self-mixing effect inside a laser diode for 3-D vision
Author :
Bosch, Thierry ; Servagent, Noel ; Chellali, Ryad ; Lescure, Marc
Author_Institution :
Dept. d´´Autom. et Productique, Ecole des Mines, Nantes, France
Abstract :
A new scanning range finder using the self-mixing effect inside a single-mode IR laser diode has been developed for the acquisition of three-dimensional image data. The optical beam back-scattered by a non-cooperative target into the laser diode cavity causes a strong variation of the optical output power. With such a device, distances were measured from 1 m to 3 m with an accuracy of 0.5% by pixel, without signal processings. By scanning the laser beam, an image size of 100 by 100 pixels has been obtained with a resolution of 0.1%, the target being at a distance of 2 m from this compact self-aligning range finder
Keywords :
backscatter; image processing; laser ranging; object detection; semiconductor lasers; 1 to 3 m; 100 pixel; 2 m; 3D image data; 3D vision; IR laser diode; backscattering; data acquisition; distances; noncooperative target; optical beam; optical output power; scanning range finder; self-aligning range finder; self-mixing effect; Diode lasers; Fabry-Perot; Laser feedback; Optical beams; Optical feedback; Optical interferometry; Optical reflection; Optical scattering; Optical sensors; Optical signal processing;
Conference_Titel :
Instrumentation and Measurement Technology Conference, 1996. IMTC-96. Conference Proceedings. Quality Measurements: The Indispensable Bridge between Theory and Reality., IEEE
Conference_Location :
Brussels
Print_ISBN :
0-7803-3312-8
DOI :
10.1109/IMTC.1996.507381
