Method and apparatus for detecting the presence and location of

Details Method and apparatus for detecting the presence and location of Method and apparatus for detecting the presence and location of

1995-06-07

1996-02-20

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Optical or pre-photocell system

2502221, 356387, H01J 4014

Patent

active

054931126

ABSTRACT:
An optical system and method for detecting the presence and location of at least one stationary or moving object in a field. The optical system has at least one light source to generate a beam, which beam is scanned by at least one first reflecting surface to generate a plurality of beams. The beams are overlapped across the field by at least one second reflecting surface and their intensity is measured by at least one detection means.

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