Patent ID: 6546079
Filing Date: 2003-04-08
Classification: H01J

Abstract:
An X-ray tube comprising a tube housing, a rotary anode having a target disk (4) rotatable around a rotation axis (12), a cathode (1) for producing a beam of electrons (2) for generating X-rays (3) upon impingement of said beam of electrons upon an emitting surface (11) of the rotary anode (4), shielding means for intercepting undesired secondary radiation originating from said emitting surface, the shielding means comprising a substantially flat shielding plate (5) within the tube housing and a projection (7) on the surface of the target disk (4) facing the cathode (1), said shielding plate extends transversely to said rotation axis (12) and is positioned between the cathode (1) and the emitting surface (11) of the target disk (4).