GB2021310A - X-ray tube - Google Patents

X-ray tube

Info

Publication number
GB2021310A
GB2021310A GB7916397A GB7916397A GB2021310A GB 2021310 A GB2021310 A GB 2021310A GB 7916397 A GB7916397 A GB 7916397A GB 7916397 A GB7916397 A GB 7916397A GB 2021310 A GB2021310 A GB 2021310A
Authority
GB
United Kingdom
Prior art keywords
anode
cathode
opening
ray tube
electrodes
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.)
Granted
Application number
GB7916397A
Other versions
GB2021310B (en
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 GB2021310A publication Critical patent/GB2021310A/en
Application granted granted Critical
Publication of GB2021310B publication Critical patent/GB2021310B/en
Expired 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

Landscapes

  • X-Ray Techniques (AREA)

Abstract

An X-ray tube includes a main anode 9, an electron gun comprising a cathode 5, an intermediate anode 25 substantially perpendicularly with respect to an active surface of the cathode and with an opening 33, and a deflecting electrode 27 for ensuring that beam (7) passes through the opening (33) to the main anode. Beam shaping electrode 29, 30, 31, and plate electrodes (34) (Fig. 3, not shown) may be included, while for magnetic deflection focussing, electrodes (34) are replaced by magnet (35) with poles (36), (37) (Figs. 4 5, not shown). Dimensions, electrical potentials, current densities and other operational characteristics are specified. Oxide or dispenser cathodes permit high current density pulses. Further correction of beam shape and direction can be achieved behind anode 25 with for example a small plate capacitor. Computer tomographic applications are exemplified. <IMAGE>
GB7916397A 1978-05-17 1979-05-11 Ray tube Expired GB2021310B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19782821597 DE2821597A1 (en) 1978-05-17 1978-05-17 USE OF A SYSTEM FOR GENERATING A FLAT ELECTRON BEAM WITH PURELY ELECTROSTATIC FOCUSING IN AN X-RAY TUBE

Publications (2)

Publication Number Publication Date
GB2021310A true GB2021310A (en) 1979-11-28
GB2021310B GB2021310B (en) 1982-09-22

Family

ID=6039581

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7916397A Expired GB2021310B (en) 1978-05-17 1979-05-11 Ray tube

Country Status (5)

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

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104370A2 (en) * 1982-08-30 1984-04-04 The Perkin-Elmer Corporation Electron gun assembly
US6091799A (en) * 1997-07-24 2000-07-18 Siemens Aktiengesellschaft X-ray tube with means for magnetic deflection
US6526122B2 (en) 1998-07-09 2003-02-25 Hamamatsu Photonics K.K. X-ray tube
EP1675153A1 (en) * 2004-08-20 2006-06-28 Satoshi Ohsawa X-ray generating method and X-ray generating apparatus
EP1723661A2 (en) * 2004-02-09 2006-11-22 Varian Medical Systems Technologies, Inc. Cathode head with focal spot control
WO2007135614A1 (en) * 2006-05-22 2007-11-29 Philips Intellectual Property & Standards Gmbh X-ray tube whose electron beam is manipulated synchronously with the rotational anode movement
US7653178B2 (en) 2004-08-20 2010-01-26 Satoshi Ohsawa X-ray generating method, and X-ray generating apparatus
US8913719B2 (en) 2012-03-27 2014-12-16 Rigaku Corporation Electron gun, X-ray generator and X-ray measurement apparatus

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IL70210A (en) * 1982-11-23 1987-10-20 Elscint Ltd X-ray tube with adjustable focal spot
DE19700992C2 (en) * 1997-01-14 1999-10-07 Siemens Ag X-ray tube
JP2008140654A (en) * 2006-12-01 2008-06-19 Shimadzu Corp X-ray generator
DE102021204540B3 (en) 2021-05-05 2022-09-29 Siemens Healthcare Gmbh electron emitter device
DE102021204538A1 (en) 2021-05-05 2022-05-12 Siemens Healthcare Gmbh X-ray source

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 (en) * 1965-07-15 1969-05-14 Siemens Ag System for generating a flat electron beam for a running field tube with purely electrostatic focusing
FR2188839A5 (en) * 1972-06-08 1974-01-18 Aquitaine Petrole
DE2310061A1 (en) * 1973-02-28 1974-08-29 Siemens Ag ROENTINE PIPE
GB1505741A (en) * 1975-03-11 1978-03-30 Standard Telephones Cables Ltd X-ray lithography
FR2379158A1 (en) * 1977-01-28 1978-08-25 Radiologie Cie Gle RADIOGENIC TUBE FOR PROVIDING AN X-RAY BEAM FLAT IN WIDE-OPENING FAN AND RADIOLOGY APPARATUS INCLUDING SUCH A TUBE

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0104370A2 (en) * 1982-08-30 1984-04-04 The Perkin-Elmer Corporation Electron gun assembly
EP0104370A3 (en) * 1982-08-30 1986-02-12 The Perkin-Elmer Corporation Electron gun assembly
US6091799A (en) * 1997-07-24 2000-07-18 Siemens Aktiengesellschaft X-ray tube with means for magnetic deflection
US6526122B2 (en) 1998-07-09 2003-02-25 Hamamatsu Photonics K.K. X-ray tube
US6735282B2 (en) 1998-07-09 2004-05-11 Hamamatsu Photonics K.K. X-ray tube
EP1723661A2 (en) * 2004-02-09 2006-11-22 Varian Medical Systems Technologies, Inc. Cathode head with focal spot control
EP1723661A4 (en) * 2004-02-09 2010-06-09 Varian Med Sys Inc Cathode head with focal spot control
EP1675153A1 (en) * 2004-08-20 2006-06-28 Satoshi Ohsawa X-ray generating method and X-ray generating apparatus
US7359485B2 (en) 2004-08-20 2008-04-15 Satoshi Ohsawa X-ray generating method and X-ray generating apparatus
US7653178B2 (en) 2004-08-20 2010-01-26 Satoshi Ohsawa X-ray generating method, and X-ray generating apparatus
WO2007135614A1 (en) * 2006-05-22 2007-11-29 Philips Intellectual Property & Standards Gmbh X-ray tube whose electron beam is manipulated synchronously with the rotational anode movement
US8913719B2 (en) 2012-03-27 2014-12-16 Rigaku Corporation Electron gun, X-ray generator and X-ray measurement apparatus

Also Published As

Publication number Publication date
FR2426331B1 (en) 1983-06-03
CH639798A5 (en) 1983-11-30
JPS6138575B2 (en) 1986-08-29
GB2021310B (en) 1982-09-22
JPS54150997A (en) 1979-11-27
FR2426331A1 (en) 1979-12-14
DE2821597A1 (en) 1979-11-22

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee