Optical sensor with movable refraction element to adjust sensor

Details Optical sensor with movable refraction element to adjust sensor Optical sensor with movable refraction element to adjust sensor

1994-03-24

1995-08-29

Nelms, David C.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

250239, 356 401, G01V 904

Patent

active

054462819

ABSTRACT:
An improved optical sensor includes a light source from which light is projected onto an object. A photodetector detects the light reflected from the object. A refraction element is movable relative to the photodetector to vary the range of the optical sensor. The position of the light source relative to the photodetector can be varied.

REFERENCES:
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patent: 4937460 (1990-06-01), Duncan et al.
patent: 5055664 (1991-10-01), Ryczek

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