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US 8,942,352 B2Granted
Field emission x-ray tube apparatus for facilitating cathode replacement
AssigneeElectronics and Telecommunications Research Institute
InventorsJin Woo Jeong, Jun Tae Kang, Yoon Ho Song, Jae Woo Kim
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Abstract
The present disclosure relates to a field emission X-ray tube apparatus for facilitating cathode replacement, and more particularly, to a field emission X-ray tube apparatus for facilitating cathode replacement in which gates and cathodes are easily arranged through a joining member and a rotation preventing guide when gates and insulating spacers are rotated and joined with the cathodes while the cathodes and respective gates maintain electrical insulation, thereby easily replacing the cathodes.
Claims6
A field-emission X-ray tube apparatus, comprising:
- a cathode emitting electrons through a field-emission emitter;
- at least one gate applying an electric field to the field-emission emitter through a gate electrode with gate holes or controlling a trajectory of a withdrawn electron beam;
- an anode in which the emitted electrons collide with each other to generate an X-ray;
- and
- a rotation preventing guide preventing the cathode and the at least one gate from being misaligned due to rotation by a process of joining the cathode to the at least one gate;
- wherein the cathode and the at least one gate are joined to each other by using a joining member.
3 more elements
Dependencies are inferred from the claim text.