Patent ID: 7869572
Filing Date: 2011-01-11
Classification: H01J

Abstract:
1. An x-ray tube comprising: a vacuum chamber; a cathode positioned within the vacuum chamber and configured to emit electrons; an anode positioned within the vacuum chamber to receive the electrons emitted from the cathode and configured to generate a beam of x-rays from the electrons; a window positioned to pass a portion of the beam of x-rays therethrough; an electron collector structure having an aperture formed therein to allow passage of the portion of the beam of x-rays unimpeded therethrough toward the window, wherein the aperture is formed by a wall of the electron collector structure, and wherein a central beam of the portion of the beam of x-rays is substantially parallel to the wall; and a layer attached to the wall of the electron collector structure, the layer covering surfaces of the wall within the aperture which face each other across the aperture, and the layer configured to pass the portion of the beam of x-rays unimpeded toward the window, and the layer configured to at least partially absorb or reduce diffraction of x-rays of the beam of x-rays that contact the layer.