Radiant energy – Invisible radiant energy responsive electric signalling – Infrared responsive
Reexamination Certificate
2007-12-03
2009-11-24
Porta, David P (Department: 2884)
Radiant energy
Invisible radiant energy responsive electric signalling
Infrared responsive
Reexamination Certificate
active
07622717
ABSTRACT:
A pixel structure for use in an infrared imager is provided. The pixel structure includes a substrate and a bolometer. The bolometer includes a transducer that has a spaced apart relationship with respect to the substrate and has an electrical resistance that varies in response to changes in the temperature of the transducer. The bolometer also includes an absorber that has a spaced apart relationship with respect to the transducer and has a thermal connection to the transducer permitting radiation absorbed by the absorber to heat the transducer. The absorber has a top side defining a recess or channel in the absorber. The recess or channel is adapted to effect the propagation path of a portion of radiation received by the absorber such that the radiation portion is absorbed by the absorber rather than exiting the absorber. The recess or channel also decreases the thermal mass of the bolometer.
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Howard Christopher G.
Skidmore George D.
DRS Sensors & Targeting Systems, Inc.
Lee Shun
Porta David P
Sonnenschein Nath & Rosenthal LLP
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