X-ray diagnostics installation comprising an electronic transmis

Details X-ray diagnostics installation comprising an electronic transmis X-ray diagnostics installation comprising an electronic transmis

1979-02-21

1980-07-29

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

250416TV, 250320, H04N 532

Patent

active

042153654

ABSTRACT:
In the illustrated embodiment an electronic transmission channel for converting an X-ray image into a television signal has an illumination device arranged in the optical path leading to the television pickup tube for providing a weak diffuse illumination of the target of the television pickup tube. It is found that such illumination enables the use of a television pickup tube having an cadmium-selenide layer, for example, without the buildup of negative potentials during scanning of the target in the absence of an X-ray image. The illumination device may be formed by one or more luminescent diodes.

REFERENCES:
patent: 3515870 (1970-06-01), Marquis
patent: 4019083 (1977-04-01), Limper

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