Radiant energy – Infrared-to-visible imaging – Including detector array
Reexamination Certificate
2006-06-20
2006-06-20
Gagliardi, Albert (Department: 2884)
Radiant energy
Infrared-to-visible imaging
Including detector array
C250S338100
Reexamination Certificate
active
07064328
ABSTRACT:
Electro-thermal feedback is utilized for zeroing the thermal conductance between a bolometer type detector element of a pixel in a thermal radiation sensor assembly and the environments through its mechanical support structure and electrical interconnects, thereby limiting the thermal conductance primarily through photon radiation. Zeroing of the thermal conductance associated with the mechanical support and electrical readout interconnect structures is achieved by electro-thermal feedback that adjust the temperature of an intermediate stage by the heating effect of a bipolar transistor amplifier circuit so that the temperature across the mechanical support and electrical interconnects structures are zeroed thereby greatly improving the thermal isolation, the responsivity and sensitivity of the electromagnetic radiation sensor.
REFERENCES:
patent: 6133572 (2000-10-01), Cunningham
patent: 6300632 (2001-10-01), Liu et al.
patent: 6489615 (2002-12-01), Bluzer
patent: WO 00/40937 (2000-07-01), None
patent: 2002 296121 (2002-10-01), None
Gagliardi Albert
Northrop Grumman Corporation
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