The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 11, 1992
Filed:
Feb. 05, 1991
U.S. Philips Corporation, New York, NY (US);
Abstract
An X-ray image intensifier tube includes an entrance screen with a photocathode and, opposite thereto and at a slight distance therefrom, is a detection screen for detecting entrance image signals intensified by the proximity tube. The detection screen comprises a phosphor layer and an integrated matrix of detection elements within the tube envelope. The detection screen can be read in a location-sensitive manner and produces signals which can be directly electrically processed. The detection screen may be provided with a metal layer enabling brightness control and be mounted completely or partly outside the tube. The tube is assembled using low-temperature thermocompression seals wherever desired. The latter is applicable to the tube seal, so that the risk of deactivation of the photocathode is avoided.