X-ray image intensifier tube

Details X-ray image intensifier tube X-ray image intensifier tube

1988-11-21

1991-01-01

Demeo, Palmer C.

Electric lamp and discharge devices

Photosensitive

Having phosphor screen

313530, H01J 3150, H01J 4018

Patent

active

049821369

ABSTRACT:
An aluminum substrate which supports a scintillator transforms X-rays into visible or nearly visible light radiation which is converted into a flux of electrons by means of a photocathode. The flux produces a visible image on an exit screen through electro-optical means. A layer which absorbs the light radiation emitted by the scintillator in the direction of the aluminium substrate is inserted between the aluminium substrate and the scintillator, the absorbing layer consisting of a material chosen from the following materials: titanium nitride, cadmium sulphide, (Cu, OhI.sub.2). A layer having a low optical index can be inserted between the scintillator and the photocathode. A chemical barrier may also be inserted between the scintillator and the photocathode. An electrically conductive and optically transparent layer can be inserted between the photocathode and the chemical barrier.

REFERENCES:
patent: 2666864 (1954-01-01), Longini
patent: 2681868 (1954-06-01), Mason et al.
patent: 3473066 (1969-10-01), Bates, Jr. et al.
patent: 3852632 (1974-12-01), Franz et al.
patent: 4447721 (1984-05-01), Wang
"Coloured Glasses" by W. A. Weyl, Society of Glass Technology-Publisher, 1967, pp. 6, 8, 271, 274.

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