Patent ID: 9202663
Filing Date: 2015-12-01
Classification: H01J

Abstract:
1. A flat filament for an X-ray tube, comprising: a first electron emission surface; a first current supply leg connected to a first end region of the first electron emission surface; a second current supply leg connected to a second end region opposite from the first end region of the first electron emission surface; a second electron emission surface disposed laterally of the first electron emission surface and connected to the first end region of the first electron emission surface; a third current supply leg connected to a second end region of the second electron emission surface; a third electron emission surface disposed laterally of the first electron emission surface, opposite from the second electron emission surface, and connected to the second end region of the first electron emission surface; and a fourth current supply leg connected to a first end region of the third electron emission surface, wherein the first, second, third, and fourth current supply legs have current supplied from a heating current supply source, and the heating current supply source supplies the current directly to the first, second, third, and fourth current supply legs, respectively.