WO2008047269A3 - Emitter for x-ray tubes and heating method therefore - Google Patents

Emitter for x-ray tubes and heating method therefore Download PDF

Info

Publication number
WO2008047269A3
WO2008047269A3 PCT/IB2007/054124 IB2007054124W WO2008047269A3 WO 2008047269 A3 WO2008047269 A3 WO 2008047269A3 IB 2007054124 W IB2007054124 W IB 2007054124W WO 2008047269 A3 WO2008047269 A3 WO 2008047269A3
Authority
WO
WIPO (PCT)
Prior art keywords
emitter
ray tubes
heating method
emitting section
unstructured
Prior art date
Application number
PCT/IB2007/054124
Other languages
French (fr)
Other versions
WO2008047269A2 (en
Inventor
Stefan Hauttmann
Wolfram Maring
Original Assignee
Philips Intellectual Property
Koninkl Philips Electronics Nv
Stefan Hauttmann
Wolfram Maring
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 Philips Intellectual Property, Koninkl Philips Electronics Nv, Stefan Hauttmann, Wolfram Maring filed Critical Philips Intellectual Property
Priority to CN200780038682.3A priority Critical patent/CN101529549B/en
Priority to US12/445,751 priority patent/US8000449B2/en
Priority to EP07805460A priority patent/EP2084728A2/en
Publication of WO2008047269A2 publication Critical patent/WO2008047269A2/en
Publication of WO2008047269A3 publication Critical patent/WO2008047269A3/en

Links

Classifications

    • 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
    • H01J35/064—Details of the emitter, e.g. material or structure
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2201/00—Electrodes common to discharge tubes
    • H01J2201/28—Heaters for thermionic cathodes
    • H01J2201/2803—Characterised by the shape or size

Abstract

It is described an emitter (26, 40) for X-ray tubes comprising: a flat foil with an emitting section (30, 46); and at least two electrically conductive fixing sections (31-34; 41-44); wherein the emitting section (30, 46) is unstructured.
PCT/IB2007/054124 2006-10-17 2007-10-10 Emitter for x-ray tubes and heating method therefore WO2008047269A2 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CN200780038682.3A CN101529549B (en) 2006-10-17 2007-10-10 Emitter for X-ray tubes and heating method therefore
US12/445,751 US8000449B2 (en) 2006-10-17 2007-10-10 Emitter for X-ray tubes and heating method therefore
EP07805460A EP2084728A2 (en) 2006-10-17 2007-10-10 Emitter for x-ray tubes and heating method therefore

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP06122431.7 2006-10-17
EP06122431 2006-10-17

Publications (2)

Publication Number Publication Date
WO2008047269A2 WO2008047269A2 (en) 2008-04-24
WO2008047269A3 true WO2008047269A3 (en) 2008-08-14

Family

ID=39047858

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2007/054124 WO2008047269A2 (en) 2006-10-17 2007-10-10 Emitter for x-ray tubes and heating method therefore

Country Status (4)

Country Link
US (1) US8000449B2 (en)
EP (2) EP2407997B1 (en)
CN (1) CN101529549B (en)
WO (1) WO2008047269A2 (en)

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Publication number Priority date Publication date Assignee Title
GB0525593D0 (en) 2005-12-16 2006-01-25 Cxr Ltd X-ray tomography inspection systems
US9208988B2 (en) 2005-10-25 2015-12-08 Rapiscan Systems, Inc. Graphite backscattered electron shield for use in an X-ray tube
US8243876B2 (en) 2003-04-25 2012-08-14 Rapiscan Systems, Inc. X-ray scanners
US10483077B2 (en) 2003-04-25 2019-11-19 Rapiscan Systems, Inc. X-ray sources having reduced electron scattering
GB0812864D0 (en) 2008-07-15 2008-08-20 Cxr Ltd Coolign anode
US9046465B2 (en) 2011-02-24 2015-06-02 Rapiscan Systems, Inc. Optimization of the source firing pattern for X-ray scanning systems
WO2008146248A1 (en) * 2007-06-01 2008-12-04 Philips Intellectual Property & Standards Gmbh X-ray emitting foil with temporary fixing bars and preparing method therefore
US7924983B2 (en) 2008-06-30 2011-04-12 Varian Medical Systems, Inc. Thermionic emitter designed to control electron beam current profile in two dimensions
DE102009005454B4 (en) * 2009-01-21 2011-02-17 Siemens Aktiengesellschaft Thermionic emission device
GB0901338D0 (en) * 2009-01-28 2009-03-11 Cxr Ltd X-Ray tube electron sources
DE102010020151A1 (en) * 2010-05-11 2011-11-17 Siemens Aktiengesellschaft Thermionic flat emitter and associated method for operating an X-ray tube
US9466455B2 (en) * 2011-06-16 2016-10-11 Varian Medical Systems, Inc. Electron emitters for x-ray tubes
JP6003993B2 (en) * 2012-09-12 2016-10-05 株式会社島津製作所 X-ray tube device and method of using the same
US9251987B2 (en) 2012-09-14 2016-02-02 General Electric Company Emission surface for an X-ray device
WO2015066246A1 (en) * 2013-10-29 2015-05-07 Varian Medical Systems, Inc. X-ray tube having planar emitter with tunable emission characteristics and magnetic steering and focusing
US9711320B2 (en) * 2014-04-29 2017-07-18 General Electric Company Emitter devices for use in X-ray tubes
DE102014211688A1 (en) 2014-06-18 2015-12-24 Siemens Aktiengesellschaft flat emitter
DE102015215690A1 (en) * 2015-08-18 2017-03-09 Siemens Healthcare Gmbh emitter array
US9953797B2 (en) 2015-09-28 2018-04-24 General Electric Company Flexible flat emitter for X-ray tubes
US10249469B2 (en) * 2016-03-30 2019-04-02 General Electric Company Fabrication methods and modal stiffining for non-flat single/multi-piece emitter
JP6744116B2 (en) * 2016-04-01 2020-08-19 キヤノン電子管デバイス株式会社 Emitter and X-ray tube
US10636608B2 (en) 2017-06-05 2020-04-28 General Electric Company Flat emitters with stress compensation features
KR101966794B1 (en) * 2017-07-12 2019-08-27 (주)선재하이테크 X-ray tube for improving electron focusing
EP3518266A1 (en) 2018-01-30 2019-07-31 Siemens Healthcare GmbH Thermionic emission device
US10998160B2 (en) * 2018-08-21 2021-05-04 General Electric Company Cathode emitter to emitter attachment system and method
CN109300750B (en) * 2018-08-30 2020-10-23 中国科学院微电子研究所 Field emission cathode electron source, array and electron emission method

Citations (5)

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Publication number Priority date Publication date Assignee Title
DE336781C (en) * 1919-07-16 1921-05-18 Siemens & Halske Akt Ges Glow cathode for x-ray tubes
WO1996039709A1 (en) * 1995-06-05 1996-12-12 Ceradyne, Inc. Directly heated dispenser cathode and method of manufacture therefor
DE19911081A1 (en) * 1999-03-12 2000-09-21 Siemens Ag X-ray tube, especially a rotating bulb tube for producing different selected focal spots, has a hybrid emitter with different concentric emitter surface regions operated individually or in groups
DE10012203C1 (en) * 2000-03-13 2001-07-26 Siemens Ag Flat thermionic emitter that prevents adverse effects of thermal stresses on emitter distortion - has devices that compensate for deformations caused by heating emission surface and hold transition points between emitter and legs substantially stress-free
DE10020266A1 (en) * 2000-04-25 2001-11-08 Siemens Ag Thermionic flat emitter of rotary X-ray tube e.g. for medical applications - has disc fixed on emitter arms and positioned beneath opening for ion entrance in emission surface, disc having comparatively large mass and high melting point

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DE738936C (en) * 1931-08-20 1944-04-19 Aeg Incandescent cathode, especially for X-ray tubes, Braun tubes
GB524240A (en) * 1939-01-25 1940-08-01 Werner Ehrenberg Improvements in or relating to cathodes for electron discharge devices
NL250741A (en) * 1959-07-16
DE2727907A1 (en) * 1977-06-21 1979-01-18 Siemens Ag X-ray tube glow cathode
JPS5568056A (en) * 1978-11-17 1980-05-22 Hitachi Ltd X-ray tube
DE3222511C2 (en) * 1982-06-16 1985-08-29 Feinfocus Röntgensysteme GmbH, 3050 Wunstorf Fine focus X-ray tube
US4675573A (en) * 1985-08-23 1987-06-23 Varian Associates, Inc. Method and apparatus for quickly heating a vacuum tube cathode
FR2633775B1 (en) * 1988-07-01 1995-11-17 Gen Electric Cgr RADIOGENIC TUBE WITH FLAT CATHODE AND INDIRECT HEATING
US5042058A (en) * 1989-03-22 1991-08-20 University Of California Ultrashort time-resolved x-ray source
DE19510048C2 (en) * 1995-03-20 1998-05-14 Siemens Ag X-ray tube
US5907595A (en) * 1997-08-18 1999-05-25 General Electric Company Emitter-cup cathode for high-emission x-ray tube
DE19828158C1 (en) * 1998-06-24 1999-11-25 Siemens Ag Indirectly heated cathode, especially for X-ray tube
DE10016125A1 (en) 1999-04-29 2000-11-02 Siemens Ag Thermionic emitter, especially flat emitter for driving X-ray tubes
US6456691B2 (en) * 2000-03-06 2002-09-24 Rigaku Corporation X-ray generator
JP4584470B2 (en) * 2001-02-01 2010-11-24 浜松ホトニクス株式会社 X-ray generator
US6480568B1 (en) * 2001-06-19 2002-11-12 Photoelectron Corporation Optically driven therapeutic radiation source
DE10135995C2 (en) * 2001-07-24 2003-10-30 Siemens Ag Directly heated thermionic flat emitter
US6785359B2 (en) * 2002-07-30 2004-08-31 Ge Medical Systems Global Technology Company, Llc Cathode for high emission x-ray tube
US7320733B2 (en) 2003-05-09 2008-01-22 Sukegawa Electric Co., Ltd. Electron bombardment heating apparatus and temperature controlling apparatus and control method thereof

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE336781C (en) * 1919-07-16 1921-05-18 Siemens & Halske Akt Ges Glow cathode for x-ray tubes
WO1996039709A1 (en) * 1995-06-05 1996-12-12 Ceradyne, Inc. Directly heated dispenser cathode and method of manufacture therefor
DE19911081A1 (en) * 1999-03-12 2000-09-21 Siemens Ag X-ray tube, especially a rotating bulb tube for producing different selected focal spots, has a hybrid emitter with different concentric emitter surface regions operated individually or in groups
DE10012203C1 (en) * 2000-03-13 2001-07-26 Siemens Ag Flat thermionic emitter that prevents adverse effects of thermal stresses on emitter distortion - has devices that compensate for deformations caused by heating emission surface and hold transition points between emitter and legs substantially stress-free
DE10020266A1 (en) * 2000-04-25 2001-11-08 Siemens Ag Thermionic flat emitter of rotary X-ray tube e.g. for medical applications - has disc fixed on emitter arms and positioned beneath opening for ion entrance in emission surface, disc having comparatively large mass and high melting point

Also Published As

Publication number Publication date
US20100316192A1 (en) 2010-12-16
EP2084728A2 (en) 2009-08-05
US8000449B2 (en) 2011-08-16
CN101529549B (en) 2014-09-03
EP2407997A1 (en) 2012-01-18
WO2008047269A2 (en) 2008-04-24
EP2407997B1 (en) 2014-03-05
CN101529549A (en) 2009-09-09

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