EP4024435A4 - X-ray source device and control method thereof - Google Patents

X-ray source device and control method thereof Download PDF

Info

Publication number
EP4024435A4
EP4024435A4 EP19943133.9A EP19943133A EP4024435A4 EP 4024435 A4 EP4024435 A4 EP 4024435A4 EP 19943133 A EP19943133 A EP 19943133A EP 4024435 A4 EP4024435 A4 EP 4024435A4
Authority
EP
European Patent Office
Prior art keywords
control method
source device
ray source
ray
control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP19943133.9A
Other languages
German (de)
French (fr)
Other versions
EP4024435A1 (en
Inventor
Cheol Jin Lee
Sang Heon Lee
Jun Soo Han
Han Bin Go
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Korea University Research and Business Foundation
Original Assignee
Korea University Research and Business Foundation
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Korea University Research and Business Foundation filed Critical Korea University Research and Business Foundation
Publication of EP4024435A1 publication Critical patent/EP4024435A1/en
Publication of EP4024435A4 publication Critical patent/EP4024435A4/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/30—Cold cathodes, e.g. field-emissive cathode
    • H01J1/304—Field-emissive cathodes
    • H01J1/3042—Field-emissive cathodes microengineered, e.g. Spindt-type
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/045—Electrodes for controlling the current of the cathode ray, e.g. control grids
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/06—Cathodes
    • H01J35/065—Field emission, photo emission or secondary emission cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/022—Manufacture of electrodes or electrode systems of cold cathodes
    • H01J9/025—Manufacture of electrodes or electrode systems of cold cathodes of field emission cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/30—Cold cathodes
    • H01J2201/304—Field emission cathodes
    • H01J2201/30446—Field emission cathodes characterised by the emitter material
    • H01J2201/30453—Carbon types
    • H01J2201/30469—Carbon nanotubes (CNTs)
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/06—Cathode assembly
    • H01J2235/062—Cold cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2235/00—X-ray tubes
    • H01J2235/06—Cathode assembly
    • H01J2235/068—Multi-cathode assembly

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • X-Ray Techniques (AREA)
EP19943133.9A 2019-08-28 2019-08-28 X-ray source device and control method thereof Pending EP4024435A4 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/KR2019/010970 WO2021040079A1 (en) 2019-08-28 2019-08-28 X-ray source device and control method thereof

Publications (2)

Publication Number Publication Date
EP4024435A1 EP4024435A1 (en) 2022-07-06
EP4024435A4 true EP4024435A4 (en) 2023-08-09

Family

ID=74685232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19943133.9A Pending EP4024435A4 (en) 2019-08-28 2019-08-28 X-ray source device and control method thereof

Country Status (4)

Country Link
EP (1) EP4024435A4 (en)
JP (1) JP7407476B2 (en)
CN (1) CN114303220A (en)
WO (1) WO2021040079A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2025526004A (en) * 2022-08-10 2025-08-07 エックス－サイト インコーポレイテッド Designing for reliability of field emitter X-ray sources.
CN119208113A (en) * 2024-12-02 2024-12-27 上海超群检测科技股份有限公司 A field emission X-ray tube with gate grouping to control emitters

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7220971B1 (en) * 2004-12-29 2007-05-22 The University Of North Carolina At Chapel Hill Multi-pixel electron microbeam irradiator systems and methods for selectively irradiating predetermined locations
WO2015175765A1 (en) * 2014-05-15 2015-11-19 Elwha Llc Applications of graphene grids in vacuum electronics
US20170084417A1 (en) * 2014-05-13 2017-03-23 Samsung Electronics Co., Ltd. Electron emitting device using graphene and method for manufacturing same
US20180158640A1 (en) * 2016-12-07 2018-06-07 Electronics And Telecommunications Research Institute Field emission apparatus
US20190088437A1 (en) * 2017-09-21 2019-03-21 Korea University Research And Business Foundation Carbon nanotube electron emitter, method of manufacturing the same and x-ray source using the same

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8102108B2 (en) * 2003-12-05 2012-01-24 Zhidan Li Tolt Low voltage electron source with self aligned gate apertures, fabrication method thereof, and devices using the electron source
JP4693884B2 (en) * 2008-09-18 2011-06-01 キヤノン株式会社 Multi X-ray imaging apparatus and control method thereof
KR101082678B1 (en) * 2009-01-16 2011-11-15 고려대학교 산학협력단 Surface field electorn emitters using carbon nanotube yarn and method for fabricating carbon nanotube yarn thereof
KR20140106291A (en) * 2013-02-26 2014-09-03 삼성전자주식회사 X-ray imaging system having flat panel type X-ray generator, and X-ray generator, and electron emission device
KR20150026363A (en) * 2013-09-02 2015-03-11 삼성전자주식회사 Field emission element and method of manufacturing gate electrode of field emission element
KR101892525B1 (en) * 2014-07-03 2018-10-04 (주)바텍이우홀딩스 Portable x-ray imaging apparatus
WO2019156729A2 (en) * 2018-01-19 2019-08-15 Florida State University Research Foundation, Inc. Lithium battery using lithium polysulfide as the cathode active material

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7220971B1 (en) * 2004-12-29 2007-05-22 The University Of North Carolina At Chapel Hill Multi-pixel electron microbeam irradiator systems and methods for selectively irradiating predetermined locations
US20170084417A1 (en) * 2014-05-13 2017-03-23 Samsung Electronics Co., Ltd. Electron emitting device using graphene and method for manufacturing same
WO2015175765A1 (en) * 2014-05-15 2015-11-19 Elwha Llc Applications of graphene grids in vacuum electronics
US20180158640A1 (en) * 2016-12-07 2018-06-07 Electronics And Telecommunications Research Institute Field emission apparatus
US20190088437A1 (en) * 2017-09-21 2019-03-21 Korea University Research And Business Foundation Carbon nanotube electron emitter, method of manufacturing the same and x-ray source using the same

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2021040079A1 *

Also Published As

Publication number Publication date
EP4024435A1 (en) 2022-07-06
JP2022545826A (en) 2022-10-31
CN114303220A (en) 2022-04-08
WO2021040079A1 (en) 2021-03-04
JP7407476B2 (en) 2024-01-04

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