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US 12,658,398 B2Granted
Cathode emission device and X-ray tube using same
AssigneeWuhan United Imaging Healthcare Co., Ltd.
InventorsXiang Xu, Jiajia Tian, Qi Zhang
Life of this patent
Estimating the term…
Abstract
The present disclosure provides a cathode emission device. The cathode emission device may comprise a cathode assembly, including: a first filament, a second filament, and a grid electrode. The grid electrode may be operably connected to the first filament and surrounding the first filament and the second filament. The cathode assembly may be configured to be operably connected to a high-voltage generator and switchable between a first connection configuration and a second connection configuration.
Claims20
A cathode emission device, comprising:
- a cathode assembly, including:
- a first filament including a first filament end and a second filament end;
- a second filament including a third filament end and a fourth filament end;
- and
- a grid electrode, the grid electrode being operably connected to the first filament and surrounding the first filament and the second filament, wherein
- the cathode assembly is configured to be operably connected to a high-voltage generator and switchable between a first connection configuration and a second connection configuration, the high-voltage generator including a first high-voltage end, a second high-voltage end, and a public end, wherein
- under the first connection configuration, the first high-voltage end is operably connected to the second filament end, the second high-voltage end is operably connected to the fourth filament end, and the public end is operably connected to the first filament end and the third filament end, and
- under the second connection configuration, the first high-voltage end is operably connected to the first filament end and the second filament end, the second high-voltage end is operably connected to the fourth filament end, and the public end is operably connected to the third filament end.
5 more elements
An X-ray tube, comprising:
- a cathode emission device, including:
- a cathode assembly, including:
- a first filament including a first filament end and a second filament end;
- a second filament including a third filament end and a fourth filament end;
- and
- a grid electrode, the grid electrode being operably connected to the first filament and surrounding the first filament and the second filament, wherein
- the cathode assembly is configured to be operably connected to a high-voltage generator and switchable between a first connection configuration and a second connection configuration, the high-voltage generator including a first high-voltage end, a second high-voltage end, and a public end, wherein under the first connection configuration, the first high-voltage end is operably connected to the second filament end, the second high-voltage end is operably connected to the fourth filament end, and the public end is operably connected to the first filament end and the third filament end, and under the second connection configuration, the first high-voltage end is operably connected to the first filament end and the second filament end, the second high-voltage end is operably connected to the fourth filament end, and the public end is operably connected to the third filament end.
4 more elements
A cathode emission device, comprising:
- a cathode assembly, including:
- a first filament, including a first filament end and a second filament end;
- a second filament, including a third filament end and a fourth filament end;
- and
- a grid electrode, the grid electrode being operably connected to the first filament end or the second filament end, and surrounding the first filament and the second filament, and
- a switch configured to operably connect the cathode assembly and a high-voltage generator, the switch including a first connection end, a second connection end, and a third connection end, the first connection end being operably connected to the first filament end, the second connection end being operably connected to the second filament end, and the third connection end being operably connected to the third filament end, wherein
- the switch is configured to be switchable between a first switch configuration and a second switch configuration, wherein the first connection end and the third connection end are operably connected under the first switch configuration, and the first connection end and the second connection end are operably connected under the second switch configuration;
- the high-voltage generator includes a first high-voltage end, a second high-voltage end, and a public end, wherein
- under the first connection configuration, the first high-voltage end is operably connected to the second filament end, the second high-voltage end is operably connected to the fourth filament end, and the public end is operably connected to the first filament end and the third filament end, and
- under the second connection configuration, the first high-voltage end is operably connected to the first filament end and the second filament end, the second high-voltage end is operably connected to the fourth filament end, and the public end is operably connected to the third filament end.
7 more elements
Dependencies are inferred from the claim text.