Millimeter wave imager device using pyroelectric effect

Details Millimeter wave imager device using pyroelectric effect Millimeter wave imager device using pyroelectric effect

1994-08-05

1996-06-25

Willis, Davis L.

Radiant energy

Invisible radiant energy responsive electric signalling

2503381, G01J 510

Patent

active

055302475

ABSTRACT:
A passive millimeter-wave imaging system configured as an integrated circuit. The imaging system incorporates a lens which focuses radiation from a scene onto a detector in the focal plane of the lens. The detector includes an outer array of ferroelectric elements in which each element includes a top metal film and a ferroelectric layer. Millimeter-wave radiation from the beam causes charge build-up in the ferroelectric layers. The charge build-up is sensed by appropriate amplification and signal processing circuitry associated with the read-out electronics so as to provide a signal indicative of obstacles in the scene to a video system. The ferroelectric layer can also be used as an antenna for each pixel element.

REFERENCES:
patent: 3792379 (1974-02-01), Auston et al.
patent: 4952811 (1990-08-01), Elliott
patent: 5438336 (1995-08-01), Lee et al.
"Millimeter-Wave Imaging Using Preamplified Diode Detector," IEEE Microwave and Guided Wave Letters, vol. 2, No. 7, Jul., 1992.
Young et al, "Passive millimeter wave imaging" TRW Quest Mag. vol. 13, No. 12, pp. 3-20, Winter 1990/1991.

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