Patent ID: 8155273
Filing Date: 2012-04-10
Classification: H01J

Abstract:
1. An apparatus for producing X-ray flux comprising: a cathode array, said cathode array comprising at least two electrically separated cathodes formed on a flat flux exit window, said flat flux exit window being an electrically non-conductive substrate, where each of said cathodes comprises at least two electron emitters; wherein each of said at least two electrically separated cathodes are individually attached via a separate resister line to an address or bus line; wherein said cathode array emits multiple electron beam currents toward a flat X-ray target, thereby causing said flat X-ray target to emit X-ray flux, a portion of which is emitted through said flat flux exit window, a vacuum enclosure, wherein said flat flux exit window and said flat X-ray target are two sides of said vacuum enclosure such that one major surface of said flat flux exit window and one major surface of said flat X-ray target are not subject to the vacuum of the said vacuum enclosure and the other major surface of said flat flux exit window and the other major surface of said flat X-ray target are subject to the vacuum of said vacuum enclosure.