Optical sensing device

Details Optical sensing device Optical sensing device

1979-08-27

1982-02-09

Buczinski, S. C.

Optics: measuring and testing

Range or remote distance finding

With photodetection

250227, 250237R, G01C 308

Patent

active

043147607

ABSTRACT:
A sensor for sensing a light-reflecting surface is provided including an element for emitting light onto such surface to be sensed. Reflected light from such surface is received by a light sensitive element. In accordance with this invention, a mask is interposed between the reflecting surface and the light sensitive element whereby the quantity of reflected light reaching the light sensitive element varies as a predetermined function of the element-surface interval. The provided sensor may thus convert reflected light quantities directly into signals which are a function of conditions existing at the intervals at which such reflecting surfaces are located.

REFERENCES:
patent: 2468042 (1949-04-01), Cranberg
patent: 3182291 (1965-05-01), Nassimbene
patent: 3314292 (1967-04-01), Schulte et al.
patent: 3327584 (1967-06-01), Kissinger
patent: 3718399 (1973-02-01), Kalman
patent: 3778157 (1973-12-01), Brelot et al.
patent: 3940608 (1976-02-01), Kissinger et al.

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