Light projector for a distance measuring device

Details Light projector for a distance measuring device Light projector for a distance measuring device

1988-07-27

1989-09-19

Perkey, N. B.

Optics: measuring and testing

Range or remote distance finding

With photodetection

356 1, G03B 300, G01C 300

Patent

active

048685933

ABSTRACT:
A light projector for a distance measuring device comprises a lens barrel holding projecting lenses and a lamp housing rotatably engaged with the lens barrel. The lamp housing containing a flash lamp comprises a front cover having a tube engaged with the lens barrel, and a back cover secured to the front cover. In the front cover, a slit is provided, with its center aligned with an optical axis of the projecting lenses, the longitudinal sides thereof being arranged precisely perpendicular to a base line of a distance measuring device. Between the lamp housing and the lens barrel, an inclination adjusting member is disposed. When the inclination adjusting member is rotated with a screwdriver, or a wrench, the lamp housing rotates about the optical axis of the projecting lenses, permitting the inclination of the slit light to be adjusted.

REFERENCES:
patent: 2397160 (1946-03-01), Schwartz et al.
patent: 4720724 (1988-01-01), Yokoo
patent: 4740676 (1988-04-01), Satoh et al.
patent: 4782356 (1988-11-01), Sano et al.
patent: 4804991 (1989-02-01), Ishizuki et al.

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