Infrared sensor and imager with differential ferroelectric...

Details Infrared sensor and imager with differential ferroelectric... Infrared sensor and imager with differential ferroelectric...

2006-05-02

2006-05-02

Porta, David (Department: 2884)

Radiant energy

Invisible radiant energy responsive electric signalling

Infrared responsive

Reexamination Certificate

active

07038206

ABSTRACT:
A pyrometer cell comprises a first ferroelectric capacitor, a second ferroelectric capacitor, and a difference circuit for determining the difference between the polarization charge, voltage, or current between the first and second ferroelectric capacitors. The cell is pulsed a plurality of times and an integrator circuit connected to the difference circuit provides an enhanced output signal representative of the integrated difference. An infrared imager is formed by an array of the pyrometer cells, with one ferroelectric capacitor in each cell exposed to an infrared source and the other ferroelectric capacitor not exposed to the infrared source.

REFERENCES:
patent: 4080532 (1978-03-01), Hopper
patent: 4952808 (1990-08-01), Turnbull et al.
patent: 5574375 (1996-11-01), Nagai
patent: 6339221 (2002-01-01), Schubring et al.
patent: 6534767 (2003-03-01), Di Maio et al.

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