FR2658002B1 - Cathode a deflexion en diedre pour tube a rayons x. - Google Patents

Cathode a deflexion en diedre pour tube a rayons x.

Info

Publication number
FR2658002B1
FR2658002B1 FR9001249A FR9001249A FR2658002B1 FR 2658002 B1 FR2658002 B1 FR 2658002B1 FR 9001249 A FR9001249 A FR 9001249A FR 9001249 A FR9001249 A FR 9001249A FR 2658002 B1 FR2658002 B1 FR 2658002B1
Authority
FR
France
Prior art keywords
diedre
ray tube
deflection cathode
deflection
cathode
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.)
Expired - Fee Related
Application number
FR9001249A
Other languages
English (en)
Other versions
FR2658002A1 (fr
Inventor
Dumitrescu Horia
Evain Bernard
Simeone Antoine
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.)
General Electric CGR SA
Original Assignee
General Electric CGR SA
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 General Electric CGR SA filed Critical General Electric CGR SA
Priority to FR9001249A priority Critical patent/FR2658002B1/fr
Priority to EP91400174A priority patent/EP0440532A1/fr
Priority to US07/649,041 priority patent/US5224143A/en
Publication of FR2658002A1 publication Critical patent/FR2658002A1/fr
Application granted granted Critical
Publication of FR2658002B1 publication Critical patent/FR2658002B1/fr
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/14—Arrangements for concentrating, focusing, or directing the cathode ray
    • H01J35/153—Spot position control
    • 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
    • H01J35/00—X-ray tubes
    • H01J35/02—Details
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/06—Cathodes
    • H01J35/066—Details of electron optical components, e.g. cathode cups
    • 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
FR9001249A 1990-02-02 1990-02-02 Cathode a deflexion en diedre pour tube a rayons x. Expired - Fee Related FR2658002B1 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
FR9001249A FR2658002B1 (fr) 1990-02-02 1990-02-02 Cathode a deflexion en diedre pour tube a rayons x.
EP91400174A EP0440532A1 (fr) 1990-02-02 1991-01-25 Cathode à déflexion en dièdre pour tube à rayons x
US07/649,041 US5224143A (en) 1990-02-02 1991-02-01 Dihedral deflection cathode for an x-ray tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR9001249A FR2658002B1 (fr) 1990-02-02 1990-02-02 Cathode a deflexion en diedre pour tube a rayons x.

Publications (2)

Publication Number Publication Date
FR2658002A1 FR2658002A1 (fr) 1991-08-09
FR2658002B1 true FR2658002B1 (fr) 1992-05-22

Family

ID=9393353

Family Applications (1)

Application Number Title Priority Date Filing Date
FR9001249A Expired - Fee Related FR2658002B1 (fr) 1990-02-02 1990-02-02 Cathode a deflexion en diedre pour tube a rayons x.

Country Status (3)

Country Link
US (1) US5224143A (fr)
EP (1) EP0440532A1 (fr)
FR (1) FR2658002B1 (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5303281A (en) * 1992-07-09 1994-04-12 Varian Associates, Inc. Mammography method and improved mammography X-ray tube
US5844963A (en) * 1997-08-28 1998-12-01 Varian Associates, Inc. Electron beam superimposition method and apparatus
EP0986090A4 (fr) * 1998-03-16 2002-01-16 Toshiba Kk Tube a rayons x
US6438207B1 (en) 1999-09-14 2002-08-20 Varian Medical Systems, Inc. X-ray tube having improved focal spot control
US6480572B2 (en) 2001-03-09 2002-11-12 Koninklijke Philips Electronics N.V. Dual filament, electrostatically controlled focal spot for x-ray tubes
US20030095632A1 (en) 2001-11-20 2003-05-22 Philips Medical Systems (Cleveland), Inc. X-ray tube cathode cup structure for focal spot deflection
EP1611591B1 (fr) * 2003-03-03 2012-06-06 Koninklijke Philips Electronics N.V. Ensemble cathode pour tube a rayons x et processus d'assemblage par reaction au niveau de l'interface
US6993116B1 (en) * 2003-10-17 2006-01-31 Siemens Aktiengesellschaft Metallic vacuum housing for an X-ray tube
US7257194B2 (en) * 2004-02-09 2007-08-14 Varian Medical Systems Technologies, Inc. Cathode head with focal spot control
WO2008068691A2 (fr) * 2006-12-04 2008-06-12 Philips Intellectual Property & Standards Gmbh Tube à rayons x avec multiples sources d'électrons et déviateur commun d'électrons
US7668296B2 (en) * 2007-06-14 2010-02-23 General Electric Co. X ray tube assembly and method of manufacturing and using the X ray tube assembly
EP2430638B1 (fr) * 2009-05-12 2018-08-08 Koninklijke Philips N.V. Source de rayons x dotee d'une pluralite d'emetteurs d'electrons et procede d'utilisation
FR2947691B1 (fr) * 2009-07-06 2016-12-16 Gen Electric Procede pour le controle de l'emission d'un faisceau d'electrons dans une cathode, cathode, tube et systeme d'imagerie correspondants
US9524845B2 (en) 2012-01-18 2016-12-20 Varian Medical Systems, Inc. X-ray tube cathode with magnetic electron beam steering

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4065689A (en) * 1974-11-29 1977-12-27 Picker Corporation Dual filament X-ray tube
FR2538948B3 (fr) * 1982-12-30 1985-10-18 Thomson Csf Tube a rayons x a balayage
US4685118A (en) * 1983-11-10 1987-08-04 Picker International, Inc. X-ray tube electron beam switching and biasing method and apparatus
JPS6132338A (ja) * 1984-07-23 1986-02-15 Shimadzu Corp 立体撮影用ｘ線管装置
US4868842A (en) * 1987-03-19 1989-09-19 Siemens Medical Systems, Inc. Cathode cup improvement
US4823371A (en) * 1987-08-24 1989-04-18 Grady John K X-ray tube system
US4870671A (en) * 1988-10-25 1989-09-26 X-Ray Technologies, Inc. Multitarget x-ray tube

Also Published As

Publication number Publication date
US5224143A (en) 1993-06-29
FR2658002A1 (fr) 1991-08-09
EP0440532A1 (fr) 1991-08-07

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Legal Events

Date Code Title Description
ST Notification of lapse