Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2011-03-01
2011-03-01
Lee, John R (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C250S222100
Reexamination Certificate
active
07897911
ABSTRACT:
An optoelectronic sensor arrangement (1), with a plurality of optical transmitters (21, 22) positioned side by side in an optical transmitter strip (12), such that each optical transmitter (21, 22) transmits the light of a transmitted cone (α1, α2) into a surveillance area (50), and with a plurality of optical receivers (31, 32) positioned side by side in an optical receiver strip (14), which optical receivers (31, 32) receive the light of a received cone (β1, β2) from the surveillance area (50), where each receiver (31, 32)comprises a spatially-resolving element (41, 42), such that each optical transmitter (21, 22) and optical receiver (31, 32) form an optical receiver/transmitter pair, and a control unit contains means for determining the optical incident point (L1, L1′, L2, L3) on one of the optical receivers (31, 32) of the transmitted cone (α1, α2) of each optical transmitter (21, 22) and/or of a foreign light source (G1).
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Henkel Olaf
Meyer Christoph
Wuestefeld Martin
Lee John R
Meyer Jerald L.
Protigal Stanley N.
Sick AG
The Nath Law Group
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