External grid-controlled hot cathode array electron gun

US10818464B2 · kind B2 · utility

Assignees

• NUCTECH COMPANY LIMITED · CN
• TSINGHUA UNIVERSITY · CN

Inventors

• Wenhui Huang · Beijing, CN
• Qingxiu Jin · Beijing, CN
• Cong Xu · Jingwei, CN
• Luming Zhang · Suzhou, CN
• Donghai Liu · Tangxia, CN
• Cheng Song · Beijing, CN
• Peidong Wu · Beijing, CN
• Qun Luo · Beijing, CN
• Chengjun Tan · Beijing, CN
• Shuo Wang · Beijing, CN

Key dates

• Filing date: Dec 27, 2019
• Grant date: Oct 27, 2020
• Expiry date: Dec 27, 2039

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01J3/027
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An external grid-controlled hot cathode array electron gun, including an insulated cathode base, a filament, a plurality of hot cathode emission elements, and a grid-controlled structure is disclosed. In one aspect, the grid-controlled structure includes an insulated grid-controlled structure body and a plurality of through holes. One side of the grid-controlled structure body abuts against the cathode base to clamp the filament between the grid-controlled structure body and the cathode base and the plurality of hot cathode emission elements are inserted into the plurality of through holes respectively.