Title:
CYLINDRICAL X-RAY TUBE AND MANUFACTURING METHOD THEREOF
Document Type and Number:
WIPO Patent Application WO/2019/022282
Kind Code:
A1
Abstract:
A cylindrical X-ray tube according to the present invention having an outer insulating layer, a cathode electrode and an anode electrode disposed at both ends of the outer insulating layer, a gate electrode disposed between the cathode electrode and the anode electrode, an emitter, and a target, comprises an inner insulating layer which is disposed between the cathode electrode and the outer insulating layer, is formed to extend downward in a coaxial direction with the outer insulating layer, and is pre-adjusted in order to secure an insulating distance between the cathode electrode and the gate electrode. Thus, by providing a separate internal insulating layer extending coaxially with the external insulating layer between the cathode electrode and the external insulating layer, the insulating distance between the cathode electrode and the gate electrode, the insulating distance between the cathode electrode and the anode electrode may be easily adjusted, so that a desired insulating capability can be secured.
Inventors:
KIM DAE JUN (KR)
PARK KWAN SOO (KR)
KIM JI EUN (KR)
KIM DONG IL (KR)
LEE CHUNG YEOL (KR)
KIM DO YUN (KR)
PARK KWAN SOO (KR)
KIM JI EUN (KR)
KIM DONG IL (KR)
LEE CHUNG YEOL (KR)
KIM DO YUN (KR)
Application Number:
PCT/KR2017/008909
Publication Date:
January 31, 2019
Filing Date:
August 16, 2017
Export Citation:
Assignee:
VACUUM SCIENCE & INSTR CO LTD (KR)
International Classes:
H01J35/04; H01J9/02; H01J35/06; H01J35/14
Foreign References:
| KR20160102744A | 2016-08-31 | |||
| US20120148027A1 | 2012-06-14 | |||
| US20130022173A1 | 2013-01-24 | |||
| KR20170022852A | 2017-03-02 | |||
| US20130170623A1 | 2013-07-04 |
Other References:
See also references of EP 3659170A4
Attorney, Agent or Firm:
C.M. PATENT & LAW FIRM, LLP. (KR)
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