Range finding apparatus

Details Range finding apparatus Range finding apparatus

1995-11-20

1998-05-12

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

Triangulation ranging to a point with one projected beam

2502016, 356 306, 356 307, 396109, G01C 300, G03B 1300

Patent

active

057514062

ABSTRACT:
A range finding apparatus includes; M photoprojectors (M: greater than one) provided in one-to-one correspondence with M range-finding axes radially extending within a virtual plane for forwardly projecting detection light along the range-finding axes; a photodetector spaced apart from the virtual plane and having N light detecting portions (N: greater than one), which serves as common photoelectric conversion means for the M photoprojectors; a range-finding axis switching device for selectively allowing the M photoprojectors to emit light; and a distance determination device for determining a distance to an object on the basis of detection values output from the N light detecting portions.

REFERENCES:
patent: 4868593 (1989-09-01), Takamura et al.
patent: 4875777 (1989-10-01), Harding
patent: 5125735 (1992-06-01), Oizumi et al.
patent: 5239335 (1993-08-01), Kato
patent: 5257060 (1993-10-01), Kotani et al.

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