Patent ID: 7720199
Filing Date: 2010-05-18
Classification: H01J,H05G

Abstract:
1. An X-ray tube for taking out X-rays generated at an X-ray target to an exterior by making electrons emitted from an electron gun be incident on the X-ray target positioned at a tip of an anode, said X-ray tube comprising: a casing, defining an internal space that houses the tip of said anode; an irradiation window, provided on said casing, for taking out the X-rays generated at said X-ray target to the exterior of said casing; an exhaust port, provided at a predetermined position of an inner wall surface of said casing that faces said anode, for vacuuming the internal space; and a shielding structure, provided in the internal space of said casing, for hiding said exhaust port from the tip of said anode.