FR2426331B1 - - Google Patents

Info

Publication number
FR2426331B1
FR2426331B1 FR7912429A FR7912429A FR2426331B1 FR 2426331 B1 FR2426331 B1 FR 2426331B1 FR 7912429 A FR7912429 A FR 7912429A FR 7912429 A FR7912429 A FR 7912429A FR 2426331 B1 FR2426331 B1 FR 2426331B1
Authority
FR
France
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
Application number
FR7912429A
Other languages
French (fr)
Other versions
FR2426331A1 (fr
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.)
Siemens AG
Original Assignee
Siemens AG
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 Siemens AG filed Critical Siemens AG
Publication of FR2426331A1 publication Critical patent/FR2426331A1/fr
Application granted granted Critical
Publication of FR2426331B1 publication Critical patent/FR2426331B1/fr
Granted 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
    • H01J35/04—Electrodes ; Mutual position thereof; Constructional adaptations therefor
    • H01J35/06—Cathodes
    • 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
    • H01J35/147—Spot size control
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J35/00—X-ray tubes
    • H01J35/24—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof
    • H01J35/26—Tubes wherein the point of impact of the cathode ray on the anode or anticathode is movable relative to the surface thereof by rotation of the anode or anticathode
FR7912429A 1978-05-17 1979-05-16 Systeme pour produire un faisceau electronique plat a focalisation purement electrostatique dans un tube a rayons x Granted FR2426331A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782821597 DE2821597A1 (de) 1978-05-17 1978-05-17 Verwendung eines systems zur erzeugung eines elektronenflachstrahls mit rein elektrostatischer fokussierung in einer roentgenroehre

Publications (2)

Publication Number Publication Date
FR2426331A1 FR2426331A1 (fr) 1979-12-14
FR2426331B1 true FR2426331B1 (zh) 1983-06-03

Family

ID=6039581

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7912429A Granted FR2426331A1 (fr) 1978-05-17 1979-05-16 Systeme pour produire un faisceau electronique plat a focalisation purement electrostatique dans un tube a rayons x

Country Status (5)

Country Link
JP (1) JPS54150997A (zh)
CH (1) CH639798A5 (zh)
DE (1) DE2821597A1 (zh)
FR (1) FR2426331A1 (zh)
GB (1) GB2021310B (zh)

Families Citing this family (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4493097A (en) * 1982-08-30 1985-01-08 The Perkin-Elmer Corporation Electron gun assembly
IL70210A (en) * 1982-11-23 1987-10-20 Elscint Ltd X-ray tube with adjustable focal spot
DE19700992C2 (de) * 1997-01-14 1999-10-07 Siemens Ag Röntgenröhre
DE19731982C1 (de) * 1997-07-24 1998-12-10 Siemens Ag Röntgenröhre mit Mitteln zur magnetischen Ablenkung
DE69940637D1 (de) 1998-07-09 2009-05-07 Hamamatsu Photonics Kk Röntgenröhre
US7257194B2 (en) * 2004-02-09 2007-08-14 Varian Medical Systems Technologies, Inc. Cathode head with focal spot control
JP4273059B2 (ja) 2004-08-20 2009-06-03 志村 尚美 Ｘ線発生方法及びｘ線発生装置
US7653178B2 (en) 2004-08-20 2010-01-26 Satoshi Ohsawa X-ray generating method, and X-ray generating apparatus
JP2009538500A (ja) * 2006-05-22 2009-11-05 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 電子ビームが回転性陽極運動と同時に処理されるｘ線管
JP2008140654A (ja) * 2006-12-01 2008-06-19 Shimadzu Corp Ｘ線発生装置
JP5614854B2 (ja) 2012-03-27 2014-10-29 株式会社リガク 電子銃、ｘ線発生装置及びｘ線測定装置
DE102021204538A1 (de) 2021-05-05 2022-05-12 Siemens Healthcare Gmbh Röntgenstrahlenquelle
DE102021204540B3 (de) 2021-05-05 2022-09-29 Siemens Healthcare Gmbh Elektronenemittervorrichtung

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1659133A (en) * 1924-12-18 1928-02-14 Gen Electric X-ray device
DE1491461A1 (de) * 1965-07-15 1969-05-14 Siemens Ag System zur Erzeugung eines Elektronenflachstrahls fuer eine Lauffeldroehre mit rein elektrostatischer Fokussierung
FR2188839A5 (zh) * 1972-06-08 1974-01-18 Aquitaine Petrole
DE2310061A1 (de) * 1973-02-28 1974-08-29 Siemens Ag Roentgenroehre
GB1505741A (en) * 1975-03-11 1978-03-30 Standard Telephones Cables Ltd X-ray lithography
FR2379158A1 (fr) * 1977-01-28 1978-08-25 Radiologie Cie Gle Tube radiogene pour fournir un faisceau de rayons x plat en eventail de grande ouverture et appareil de radiologie comportant un tel tube

Also Published As

Publication number Publication date
GB2021310B (en) 1982-09-22
JPS54150997A (en) 1979-11-27
FR2426331A1 (fr) 1979-12-14
DE2821597A1 (de) 1979-11-22
CH639798A5 (de) 1983-11-30
JPS6138575B2 (zh) 1986-08-29
GB2021310A (en) 1979-11-28

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Legal Events

Date Code Title Description
ST Notification of lapse