A scanning range finder using the self-mixing effect inside a laser diode for 3-D vision

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...

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Bibliographic Details
Published in1996 IEEE Instrumentation and Measurement Technology Conference Proceedings Vol. 1; pp. 226 - 231 vol.1
Main Authors Bosch, T., Servagent, N., Chellali, R., Lescure, M.
Format Conference Proceeding
LanguageEnglish
Published IEEE 1996
Subjects
Diode lasers
Fabry-Perot
Laser feedback
Optical beams
Optical feedback
Optical interferometry
Optical reflection
Optical scattering
Optical sensors
Optical signal processing
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ISBN0780333128
9780780333123
DOI10.1109/IMTC.1996.507381

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Summary: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.
ISBN:0780333128
9780780333123
DOI:10.1109/IMTC.1996.507381