Electron gun and X-ray source and CT device having the electron gun
AssigneesTsinghua University, Nuctech Company Limited
InventorsWenhui Huang, Dongsheng Zhang, Qingxiu Jin, Chengjun Tan, Donghai Liu, Qun Luo, Chuanxiang Tang
Life of this patent
Estimating the term…
Abstract
An electron gun, an X-ray source and a CT device are provided. The electron gun includes a body having a first end portion and a second end portion opposite to each other, wherein the first end portion is a connecting end portion; an internal cavity is formed in the body and has an opening positioned on the second end portion; a cathode, a grid, a compensation electrode and a focus electrode, orderly arranged in the internal cavity in a direction from the first end portion to the second end portion.
Claims19
An electron gun, comprising:
- a body having a first end portion and a second end portion opposite to each other, wherein the first end portion is a connecting end portion;
- an internal cavity is formed in the body and has an opening positioned on the second end portion;
- and
- a cathode, a grid, a compensation electrode and a focus electrode, orderly arranged in the internal cavity in a direction from the first end portion to the second end portion,
- wherein ceramic piezoelectric rings are disposed between the compensation electrode and the focus electrode, and between the compensation electrode and the grid, respectively.
Dependencies are inferred from the claim text.