Distance measurement device

Details Distance measurement device Distance measurement device

1995-06-26

1997-12-16

Hellner, Mark

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 505, G01C 308

Patent

active

056991517

ABSTRACT:
A distance measurement device comprising a light-sending unit for sending pulsed light toward an object of measurement where a distance thereto is measured, a light-receiving unit for receiving incident light including pulsed reflection light reflected by the object, a distance measurement unit for measuring the time from the sending of the pulsed light to the receiving of the incident light and calculating the distance to the object, and an interference detection unit for determining whether interference light exists in the incident light, based on the intensity of the incident light.

REFERENCES:
patent: 4605302 (1986-08-01), Lofgren et al.
patent: 4657382 (1987-04-01), Busujima et al.
patent: 4699507 (1987-10-01), Etoh
patent: 5102218 (1992-04-01), Min et al.
patent: 5179286 (1993-01-01), Akasu
patent: 5243181 (1993-09-01), Bondarev et al.
patent: 5504590 (1996-04-01), Akasu
patent: 5523835 (1996-06-01), Tanaka
U.S. Appln. SN 08/189,713, filed Feb. 1, 1994, GAU 2505, Masahira Akasu.

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