Title:
EMITTER AND DEVICE COMPRISING SAME
Document Type and Number:
WIPO Patent Application WO/2023/189842
Kind Code:
A1
Abstract:
This emitter comprises: an insulator; a pair of conductive terminals attached to the insulator and spaced apart from each other; a heater that is arranged between the tip sections of the pair of insulator terminals and emits heat as a result of being energized; an electron source formed from a first material that is heated by the heater and releases electrons; a Wehnelt electrode that has an inner surface forming an interior space together with the surface of the insulator, and that serves to apply bias voltage between said Wehnelt electrode and the electron source; and a shielding member covering part of the surface of the insulator within the interior space.
Inventors:
ISHIKAWA DAISUKE (JP)
Application Number:
PCT/JP2023/010963
Publication Date:
October 05, 2023
Filing Date:
March 20, 2023
Export Citation:
Assignee:
DENKA COMPANY LTD (JP)
International Classes:
H01J37/06; H01J1/22; H01J1/90; H05B3/06
Foreign References:
| JP2003168382A | 2003-06-13 | |||
| JP2008166265A | 2008-07-17 | |||
| JPH09260237A | 1997-10-03 |
Attorney, Agent or Firm:
HASEGAWA Yoshiki et al. (JP)
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