Distance measuring apparatus

Details Distance measuring apparatus Distance measuring apparatus

1995-06-15

1997-09-16

Hellner, Mark

Optics: measuring and testing

Range or remote distance finding

Triangulation ranging to a point with one projected beam

396582, G01C 300, G03D 900

Patent

active

056686269

ABSTRACT:
A distance measuring apparatus includes: a light projecting unit including a light source and a light projecting lens; a distance measuring first photosensor unit disposed at a predetermined baseline length from the light projecting unit and including a first photosensor and a first light receiving lens; and a second photosensor unit disposed in the vicinity of the light projecting unit in a direction perpendicular to the baseline and including a second photosensor and a second light receiving lens. An output of the second photosensor unit is used for correcting an output of the first photosensor unit.

REFERENCES:
patent: 4814810 (1989-03-01), Ishiguro
patent: 5221955 (1993-06-01), Inoue
patent: 5274429 (1993-12-01), Misawa et al.
patent: 5319414 (1994-06-01), Nakano et al.
patent: 5493362 (1996-02-01), Nonaka
patent: 5512997 (1996-04-01), Ogawa

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