Infrared image storage plate

Details Infrared image storage plate Infrared image storage plate

1975-09-10

1976-05-18

Willis, Davis L.

Radiant energy

Infrared-to-visible imaging

H01J 3149

Patent

active

039581217

ABSTRACT:
An Infrared Image Storage Plate for displaying and/or recording infrared ges having photon energy levels which are generally insufficient to release electrons from photocathode materials is described. The image storage plate includes a multi-layered structure, beginning from the face of incident infrared radiation: a conducting grid; a photoconductor layer; a layer of P type semi-conductor material having N type semiconductor islands thereon; a layer of dielectric material over the N type islands; a deformographic film; and a thin film of conductive material. To store an image therein a positive potential is applied to the thin conductive film and a negative potential is applied to the conductive grid. Upon the receipt of incident infrared radiation electrons are released from the photoconductor layer and are integrated by the PN junctions in the semiconductor material to thereby deform the deformographic film in accordance with the incident infrared image. The image stored by the deformographic film can be projected for viewing or stored on a photographic film by use of a Schlieren Optical System. The image stored in the plate may be erased by reversing the potential applied thereto.

REFERENCES:
patent: 3919555 (1975-11-01), Singer
patent: 3930157 (1975-12-01), Watton

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