Anti-ghost device for optical distance measuring system

Details Anti-ghost device for optical distance measuring system Anti-ghost device for optical distance measuring system

1981-07-07

1983-03-01

Buczinski, S. C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

250237R, 354 25, 356 4, G01C 308

Patent

active

043753329

ABSTRACT:
In the disclosed optical distance measuring system, a pair of mirrors spaced from each other along a base line direct light coming from a scene along two optical paths onto reflecting surfaces of a prism positioned between them and through a pair of image forming lenses positioned between the prism and the mirrors so that the prism forms images of the scene on respective photoelectric element arrays. A light baffle in front of the photoelectric element arrays forms an aperture for limiting a desired field of view and includes a light shading projection at the edge of the aperture for preventing light rays from the lenses and outside the desired field of view from impinging upon the arrays.

REFERENCES:
patent: 3224709 (1965-12-01), Blizard
patent: 4071772 (1978-01-01), Leitz et al.
patent: 4091275 (1978-05-01), Wilwerding

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