Patent ID: 6045427
Filing Date: 2000-04-04
Classification: H01J

Abstract:
A method of manufacturing an X-ray image intensifier, comprising:preparing a spherical X-ray incident aluminum material window having a dome portion and a peripheral portion continuous to said dome portion, and a brazing sheet, which has an annular shape corresponding with that of a high-strength support frame that supports said X-ray incident window and said peripheral portion of said incident window, and which has a brazing layer at least on a region thereof which is to be brought into contact with said peripheral portion of said incident window and said support frame;providing means for preventing a molten brazing material from reaching a region where an input screen is to be formed;forming a groove in said prepared brazing sheet;placing said brazing sheet on said support frame, and placing said peripheral portion of said incident window on said brazing sheet;heating said brazing sheet, thus melting said brazing material, thereby hermetically brazing said incident window to said support frame through said brazing sheet;forming an input screen for converting an X-ray image into a photoelectron image on an inner surface of said X-ray incident window;hermetically sealing said X-ray incident window to a vessel, thus forming a vacuum envelope; andevacuating an interior of said vacuum envelope.