Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Reexamination Certificate
2011-03-08
2011-03-08
Sohn, Seung C (Department: 2878)
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
C356S213000, C313S506000, C359S857000
Reexamination Certificate
active
07902534
ABSTRACT:
A system having a multiple-mirror ring-down cavity with one mirror where light may be input into the cavity and light from the cavity may be detected. A valve may permit light to enter or not to enter the cavity. An amplifier may be connected to a detector for detecting light from the cavity. The amplifier may be off or set at a low gain when light is entering the cavity and be on at a medium or high gain at a time when light is not entering the cavity.
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Scherer et al., “
Anderson Carl
Cole Barrett E.
Cox James Allen
Marta Terry
Thorland Rodney
Honeywell International , Inc.
Seager Tufte & Wickhem LLC
Sohn Seung C
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