Patent · US Expired

X-ray image intensifier having input screen with carbon layer

US3962582A · kind A · utility

3Cited by

4References

3Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Walter Greschat · Buckenhof, DE
Wolfgang Schubert · Karup, DK

Key dates

Filing date	Nov 14, 1974
Grant date	Jun 8, 1976
Priority date	—
Expiry date	Nov 14, 1994

Classification

Technology area (CPC H)Electricity
CPC primaryH01J29/385
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

An X-ray image amplifier or intensifier and, more particularly, an input screen for electron-optical image intensifiers having a phosphorescent or luminescent layer supported on a carrier, which is followed by a photocathode layer, and wherein a dark-colored intermediate layer is located between the luminescent layer and the photocathode layer. The darkly-colored layer employed between the luminescent layer and the photocathode layer is constituted of an at least approximately uniform surface coating of carbon or graphite facilitating the partial transmission of the light from the luminescent layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.