Title:
電子銃
Document Type and Number:
Japanese Patent JP7092470
Kind Code:
B2
Abstract:
To suppress both influence of electron emission from a cathode side surface and consumption of energy to be supplied to a heater, while being provided with a grid, an electron gun of the present invention includes: a cathode capable of emitting electrons by heating; a grid capable of controlling the electron emission; and a cathode shield which is an conductor including a material portion located in the vicinity of a side surface of the cathode and facing at least a portion of the side surface via a gap or a heat insulating material, and not being made in direct physical coupling nor in direct physical contact with the cathode.
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| JPS6310430 | ELECTRON GUN FOR LINEAR BEAM MICROWAVE TUBE |
| JPS60211739 | BEAM GENERATOR FOR ELECTRON TUBE |
| WO/2007/052774 | MULTI-BEAM KLYSTRON APPARATUS |
Inventors:
Chiba Tohru
Application Number:
JP2017142457A
Publication Date:
June 28, 2022
Filing Date:
July 24, 2017
Export Citation:
Assignee:
NEC Network and Sensor Systems Co., Ltd.
International Classes:
H01J23/06
Domestic Patent References:
| JP7320649A | ||||
| JP2003346671A | ||||
| JP5325776A |
Foreign References:
| US5623183 |
Attorney, Agent or Firm:
Desk
Keiji Kitajima
Keiji Kitajima