The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 18, 2020
Filed:
Dec. 28, 2017
Tsinghua University, Beijing, CN;
Nuctech Company Limited, Beijing, CN;
Wenhui Huang, Beijing, CN;
Dongsheng Zhang, Beijing, CN;
Qingxiu Jin, Beijing, CN;
Chengjun Tan, Beijing, CN;
Donghai Liu, Beijing, CN;
Qun Luo, Beijing, CN;
Chuanxiang Tang, Beijing, CN;
TSINGHUA UNIVERSITY, Beijing, CN;
NUCTECH COMPANY LIMITED, Beijing, CN;
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.