Target for a pyroelectric camera

Details Target for a pyroelectric camera Target for a pyroelectric camera

1981-11-06

1983-05-31

Demeo, Palmer C.

Electric lamp and discharge devices

Cathode ray tube

Image pickup tube

313523, 250333, H01J 2945, H01J 3149

Patent

active

043862942

ABSTRACT:
The invention relates to a technique for providing a so-called `pedestal` voltage on the rear surface of the target of a pyroelectric camera. This is a positive voltage required to ensure efficient discharge, by the electron beam, of the pyroelectric charge. In the invention, the pyroelectric material is in the form of a plurality of islands of pyroelectric material connected individually to the signal plate. Each island is coated on its rear surface and on at least one side, by a conductive film. By applying a positive bias voltage to the signal plate, the rear surface of the pyroelectric islands are similarly biassed to provide the pedestal.

REFERENCES:
patent: 3930157 (1975-12-01), Watton
patent: 4053806 (1977-10-01), Turnbull et al.
patent: 4139444 (1979-02-01), Singer et al.
patent: 4180759 (1979-12-01), Harris et al.

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