Distance measuring device

Details Distance measuring device Distance measuring device

1986-08-20

1987-07-28

Buczinski, Stephen C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

354403, G01C 300, G03B 300

Patent

active

046828869

ABSTRACT:
In the disclosed distance measuring device a focal point of an optical system is detected by measuring a distance to an object to be measured with light projecting and receiving means according to the principle of the trigonometric distance measuring method. The device is of the type having light projecting means, light receiving means and the optical axis of the optical system arranged on different planes. Projection of a light flux by the light projecting means is effected within a first plane which contains the optical axis of the optical system and the light projecting means and the reflection of the light from the light flux in projecting means is received within a second plane which contains the optical axis of the optical system and the light receiving means, so that the distance to the object can be always accurately measured on the optical axis of the optical system without any parallax.

REFERENCES:
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patent: 3442193 (1969-05-01), Pagel
patent: 4032934 (1977-06-01), Hendrickson et al.
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patent: 4313654 (1982-02-01), Matsui et al.
patent: 4330202 (1982-05-01), Yokota
patent: 4346988 (1982-08-01), Kimura et al.
patent: 4417795 (1983-11-01), Tamura et al.
patent: 4441810 (1984-04-01), Momose et al.
patent: 4464038 (1984-08-01), Nanba
patent: 4494847 (1985-01-01), Yamada

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