Distance measuring apparatus

Details Distance measuring apparatus Distance measuring apparatus

1997-02-18

1999-10-05

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

Triangulation ranging to a point with one projected beam

396106, 356 303, 356 308, 2502016, 250552, G01C 300, G03B 1300, H01L 3114

Patent

active

059633085

ABSTRACT:
In a distance measuring apparatus for measuring the distance to an object on the basis of reflected light obtained as a result of projecting light toward the object, in the case of an active distance measurement operation, the flickering frequency of a light beam projected from a light projection unit (B) toward the object (A) is prolonged within the range in which charges obtained by a signal charge supply unit (C) are not saturated in a circulating shift register (E). When the flickering period is longer than a predetermined period, a distance measurement operation inhibition unit (L) inhibits transition to a passive distance measurement operation.

REFERENCES:
patent: 4291223 (1981-09-01), Sakane et al.
patent: 4643564 (1987-02-01), Lofgren et al.
patent: 4693597 (1987-09-01), Shiomi et al.
patent: 4701048 (1987-10-01), Tokuda et al.
patent: 4720723 (1988-01-01), Harunari et al.
patent: 4959755 (1990-09-01), Hochstein

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