제어로봇시스템학회:학술대회논문집
- 1989.10a
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- Pages.972-978
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- 1989
Compact and precision range finder using self-mixing semiconductor laser
- Shinohara, Shigenobu (Shizuoka University) ;
- Andou, Minoru (Shizuoka University) ;
- Yoshida, Hirofumi (Shizuoka University) ;
- Ikeda, Hiroaki (Shizuoka University) ;
- Miyata, Masafumi (Tokyo Aircraft Instrument Co.Ltd) ;
- Yoshida, Jun-Ichi (Tokyo Aircraft Instrument Co.Ltd) ;
- Nishide, Ken-Ichi (Tokyo Aircraft Instrument Co.Ltd) ;
- Sumi, Masao (Chiba Institute of Technology)
- Published : 1989.10.01
Abstract
Proposed is improved compact self-mixing type semiconductor-laser range finder, which measures mode-hop time interval (MHI). Measurement error caused by the fluctuation of MHI is greatly reduced by averaging many contiguous MHI's. The main cause of measurement error 1.5% at ranges from 0.1m to 0.8m is attributed to the optical phase change of a returned light from a focusing lens. Accuracy improvement by stabilization of the returned light is suggested.
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