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US 2023/0197397 A1Published application
X-ray tube cathode focusing element
AssigneeGE Precision Healthcare LLC
InventorsSergio Lemaitre, Kevin Kruse
Life of this patent
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Abstract
Various methods and systems are provided for an X-ray tube cathode focusing element. In one example, a focusing element is configured with three electron emission filaments, an integrated edge focusing, and a bias voltage. The integrated edge focusing may include a continuous single architecture with rounded edges, and a voltage of the focusing element may be negatively biased relative to a voltage of the electron emission filaments.
Claims20
A cathode for an X-ray tube, comprising:
- a cathode base;
- an insulator having a first side adjacent to the cathode base and a second side opposite the first side;
- a focusing element adjacent to the second side of the insulator, the focusing element having at least one channel with a filament arranged therein, and at least one focusing feature on either side of the at least one channel.
An imaging system, comprising:
- an anode assembly;
- and
- a cathode assembly configured to focus an electron beam on the anode assembly, wherein the cathode assembly includes a monolithic focusing element with:
- at least one channel and a filament arranged therein;
- at least one recess at each of two lateral edge features;
- and
- at least two focusing features positioned between the two lateral edge features.
4 more elements
A cathode for an X-ray imaging system, comprising:
- a focusing element having a first side positioned adjacent to an electrode plate;
- and
- an insulator having a first side positioned adjacent the electrode plate and a second, opposite side adjacent to a cathode base;
- wherein
- the focusing element has at least three filaments of different sizes positioned in respective channels of different widths, where each of the at least three filaments are coupled to two current feedthroughs, each current feedthrough configured with a leg extending through a central, hollow space of the focusing element, the electrode plate, the insulator, and the cathode base.
2 more elements
Dependencies are inferred from the claim text.