Diaphragm for an X-ray tube and X-ray tube with such a diaphragm
AssigneeYxlon International GmbH
InventorAndré Schu
Life of this patent
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Abstract
A diaphragm for restricting a cross section of an electron beam of an X-ray tube includes a base body made of a first material, which has a first cylindrical or conical diaphragm aperture, and an additional body made of a second material, which has a second cylindrical or conical diaphragm aperture. The additional body in the installed state is arranged on the side near the electron source, wherein the atomic number of the first material is greater than the atomic number of the second material. The diameters of the diaphragm apertures at the end far from the electron source are not smaller than at the end near the electron source, and the second diaphragm aperture at its end far from the electron source lies completely inside the first diaphragm aperture at its end near the electron source.
Claims14
A diaphragm for restricting a cross section of an electron beam emitted from an electron source of an X-ray tube comprising:
- a base body made of a first material and which has a first cylindrical or conical-shaped diaphragm aperture;
- a second body made of a second material and which has a second cylindrical or conical-shaped diaphragm aperture, the second body being arranged on a proximal side of the diaphragm with respect to the electron source, and wherein an atomic number of the first material is greater than an atomic number of the second material;
- wherein the first and second diaphragm apertures each have a proximal end and a distal end with respect to the electron source, the distal ends having diameters that are not smaller than corresponding diameters at the proximal ends of the diaphragm apertures, the proximal end diameter of the second diaphragm aperture of the second body being less than a cross-sectional area of electron beam emitted from the electron source;
- and
- wherein the distal end of the second diaphragm aperture of the second body is axially aligned with and positioned adjacent to the proximal end of the first diaphragm aperture of the base body, and the distal end diameter of the second diaphragm aperture of the second body is less than the proximal end diameter of the first diaphragm aperture of the base hods.
Dependencies are inferred from the claim text.