Optics: measuring and testing – Range or remote distance finding – Triangulation ranging to a point with one projected beam
Patent
1996-06-27
1998-06-30
Hellner, Mark
Optics: measuring and testing
Range or remote distance finding
Triangulation ranging to a point with one projected beam
3561414, 356376, G01C 300, G01B 1126, G01B 1124
Patent
active
057742073
ABSTRACT:
The present invention offers a light scanner which is compact and highly precise during high-speed operation, has a long lifespan, and is resistant to influence by external acceleration. Specifically, a light beam emitted from an optical source 20 is separated into two light beams by means of a light beam separation means 30, and these light beams are deflected by a mirror 43 on the scanner 40. On of the light beams is used for the object of usage, while the other light beam is made incident on a photo detector 50 which outputs a signal based on the incident position of the light beam, in order to determine the deflection angle of the light beam based on vibrations of the mirror 43.
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Arakawa Ken'ichi
Tateishi Kazuyoshi
Yoshida Masaharu
Hellner Mark
Nippon Telegraph and Telephone Corporation
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