DE3871829D1 - Roentgenroehre. - Google Patents

Roentgenroehre.

Info

Publication number
DE3871829D1
DE3871829D1 DE8888104375T DE3871829T DE3871829D1 DE 3871829 D1 DE3871829 D1 DE 3871829D1 DE 8888104375 T DE8888104375 T DE 8888104375T DE 3871829 T DE3871829 T DE 3871829T DE 3871829 D1 DE3871829 D1 DE 3871829D1
Authority
DE
Germany
Prior art keywords
ray tubes
tubes
ray
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
DE8888104375T
Other languages
English (en)
Other versions
DE3871829T2 (de
Inventor
James Joseph Dowd
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 DE3871829D1 publication Critical patent/DE3871829D1/de
Application granted granted Critical
Publication of DE3871829T2 publication Critical patent/DE3871829T2/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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
    • 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
    • H01J2235/00—X-ray tubes
    • H01J2235/06—Cathode assembly
    • H01J2235/068—Multi-cathode assembly
DE8888104375T 1987-03-19 1988-03-18 Roentgenroehre. Expired - Lifetime DE3871829T2 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US07/027,787 US4868842A (en) 1987-03-19 1987-03-19 Cathode cup improvement

Publications (2)

Publication Number Publication Date
DE3871829D1 true DE3871829D1 (de) 1992-07-16
DE3871829T2 DE3871829T2 (de) 1992-12-10

Family

ID=21839788

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8888104375T Expired - Lifetime DE3871829T2 (de) 1987-03-19 1988-03-18 Roentgenroehre.

Country Status (4)

Country Link
US (2) US4868842A (de)
EP (1) EP0283039B1 (de)
DE (1) DE3871829T2 (de)
ES (1) ES2031546T3 (de)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2633773B1 (fr) * 1988-07-01 1991-02-08 Gen Electric Cgr Tube radiogene a auto-limitation du flux electronique par saturation
FR2658002B1 (fr) * 1990-02-02 1992-05-22 Gen Electric Cgr Cathode a deflexion en diedre pour tube a rayons x.
EP0553914A1 (de) * 1992-01-27 1993-08-04 Koninklijke Philips Electronics N.V. Röntgenröhre mit veränderlichem Brennfleck
US5303281A (en) * 1992-07-09 1994-04-12 Varian Associates, Inc. Mammography method and improved mammography X-ray tube
USH1467H (en) * 1993-11-16 1995-08-01 Shell Oil Company Detergent formulations containing a surface active composition containing a nonionic surfactant component and a secondary alkyl sulfate anionic surfactant component
DE19504305A1 (de) * 1995-02-09 1996-08-14 Siemens Ag Röntgenröhre
US5907595A (en) * 1997-08-18 1999-05-25 General Electric Company Emitter-cup cathode for high-emission x-ray tube
US6333969B1 (en) * 1998-03-16 2001-12-25 Kabushiki Kaisha Toshiba X-ray tube
US6259193B1 (en) 1998-06-08 2001-07-10 General Electric Company Emissive filament and support structure
DE10025807A1 (de) * 2000-05-24 2001-11-29 Philips Corp Intellectual Pty Röntgenröhre mit Flachkathode
US7327829B2 (en) * 2004-04-20 2008-02-05 Varian Medical Systems Technologies, Inc. Cathode assembly
US7576481B2 (en) * 2005-06-30 2009-08-18 General Electric Co. High voltage stable cathode for x-ray tube
US9125572B2 (en) 2012-06-22 2015-09-08 University Of Utah Research Foundation Grated collimation system for computed tomography
DE102013225589B4 (de) 2013-12-11 2015-10-08 Siemens Aktiengesellschaft Röntgenstrahler
US20150173692A1 (en) * 2013-12-20 2015-06-25 University Of Utah Research Foundation Computed tomography devices, systems, and methods
FR3073702A1 (fr) 2017-11-10 2019-05-17 General Electric Company Systemes permettant d'ameliorer le fonctionnement de generateurs de rayons x
US20230197397A1 (en) * 2021-12-21 2023-06-22 GE Precision Healthcare LLC X-ray tube cathode focusing element

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2146900A (en) * 1936-11-14 1939-02-14 Eureka X Ray Tube Corp X-ray tube
NL69809C (de) * 1946-05-09
US3567928A (en) * 1969-06-12 1971-03-02 Du Pont Fluorescent analytical radiation source for producing soft x-rays and secondary electrons
US3649861A (en) * 1970-09-09 1972-03-14 Picker Corp Double focus x-ray tube
DE2417820C3 (de) * 1974-04-11 1980-12-04 Philips Patentverwaltung Gmbh, 2000 Hamburg Katodenkopf einer Drehanoden-Röntgenröhre
US3916202A (en) * 1974-05-03 1975-10-28 Gen Electric Lens-grid system for electron tubes
US4065689A (en) * 1974-11-29 1977-12-27 Picker Corporation Dual filament X-ray tube
US3946261A (en) * 1975-01-03 1976-03-23 The Machlett Laboratories, Inc. Dual filament X-Ray tube
JPS5330292A (en) * 1976-09-01 1978-03-22 Toshiba Corp X-ray tube
JPS5568056A (en) * 1978-11-17 1980-05-22 Hitachi Ltd X-ray tube
JPS55108158A (en) * 1979-02-13 1980-08-19 Hitachi Ltd Cathode for x-ray tube
US4331875A (en) * 1980-04-07 1982-05-25 Burroughs Corporation Shadow casting electron-beam system
DE3222511C2 (de) * 1982-06-16 1985-08-29 Feinfocus Röntgensysteme GmbH, 3050 Wunstorf Feinfokus-Röntgenröhre
JPS59165353A (ja) * 1983-03-11 1984-09-18 Toshiba Corp 回転陽極型ｘ線管
JPS60254538A (ja) * 1984-05-31 1985-12-16 Toshiba Corp Ｘ線管装置
JPS6224543A (ja) * 1985-07-24 1987-02-02 Toshiba Corp Ｘ線管装置

Also Published As

Publication number Publication date
EP0283039B1 (de) 1992-06-10
EP0283039A3 (en) 1989-04-12
DE3871829T2 (de) 1992-12-10
EP0283039A2 (de) 1988-09-21
US4868842A (en) 1989-09-19
ES2031546T3 (es) 1992-12-16
US4894853A (en) 1990-01-16

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee