GB651507A - Improvement in x-ray tubes - Google Patents

Improvement in x-ray tubes

Info

Publication number
GB651507A
GB651507A GB6772/49A GB677249A GB651507A GB 651507 A GB651507 A GB 651507A GB 6772/49 A GB6772/49 A GB 6772/49A GB 677249 A GB677249 A GB 677249A GB 651507 A GB651507 A GB 651507A
Authority
GB
United Kingdom
Prior art keywords
anticathode
filament
recess
focusing member
ray tubes
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
Application number
GB6772/49A
Other languages
English (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB651507A publication Critical patent/GB651507A/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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/15—Cathodes heated directly by an electric current
    • 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

Landscapes

  • X-Ray Techniques (AREA)
  • Microwave Tubes (AREA)
GB6772/49A 1946-05-09 1946-11-22 Improvement in x-ray tubes Expired GB651507A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR944917T 1946-05-09

Publications (1)

Publication Number Publication Date
GB651507A true GB651507A (en) 1951-04-04

Family

ID=33548389

Family Applications (2)

Application Number Title Priority Date Filing Date
GB34709/46A Expired GB651455A (en) 1946-05-09 1946-11-22 Improvement in x-ray tubes
GB6772/49A Expired GB651507A (en) 1946-05-09 1946-11-22 Improvement in x-ray tubes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB34709/46A Expired GB651455A (en) 1946-05-09 1946-11-22 Improvement in x-ray tubes

Country Status (7)

Country Link
US (1) US2597817A (enExample)
BE (1) BE469098A (enExample)
CH (1) CH261755A (enExample)
FR (2) FR944917A (enExample)
GB (2) GB651455A (enExample)
NL (1) NL69809C (enExample)
SE (1) SE122892C1 (enExample)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149115B (de) * 1959-06-11 1963-05-22 Hilger & Watts Ltd Feinfokus-Roentgenroehre
US3303372A (en) * 1964-08-20 1967-02-07 Dunlee Corp X-ray generator with a knife edged cold cathode emitter

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3103591A (en) * 1963-09-10 Radiographic systems and method
DE931304C (de) * 1952-05-24 1955-08-04 Siemens Reiniger Werke Ag Elektrische Entladungsroehre mit Elektrodenrichtglied
US2866113A (en) * 1952-10-07 1958-12-23 Cosslett Vernon Ellis Fine focus x-ray tubes
DE1027332B (de) * 1953-08-31 1958-04-03 Siemens Ag Metallglasverschmelzung fuer elektrische Entladungsgefaesse, wie Stromrichtergefaesse od. dgl.
DE1097041B (de) * 1956-09-19 1961-01-12 Emi Ltd Justiervorrichtung zur Zentrierung einer Kathode einer elektrischen Entladungsanordnung fuer hoechste Frequenzen
CH355225A (de) * 1958-01-22 1961-06-30 Foerderung Forschung Gmbh Verfahren und Einrichtung zum Kontrollieren und Korrigieren der Lage des durch einen Kathodenstrahl erzeugten Brennflecks auf der Antikathode einer Röntgenröhre
GB872579A (en) * 1958-10-15 1961-07-12 Ass Elect Ind Improvements relating to electron gun assemblies
US3179832A (en) * 1960-01-12 1965-04-20 Field Emission Corp Temperature enhanced field emission x-ray tube
DE3151229A1 (de) * 1981-12-23 1983-06-30 Siemens AG, 1000 Berlin und 8000 München Verfahren und vorrichtung zur optimierung der emission einer roentgenroehre
DK147778C (da) * 1981-12-29 1985-05-20 Andrex Radiation Prod As Roentgenstraalegenerator
US4698835A (en) * 1984-05-31 1987-10-06 Kabushiki Kaisha Toshiba X-ray tube apparatus
US4868842A (en) * 1987-03-19 1989-09-19 Siemens Medical Systems, Inc. Cathode cup improvement
US6356619B1 (en) * 2000-06-02 2002-03-12 General Electric Company Varying x-ray tube focal spot dimensions to normalize impact temperature
EP3240010B1 (en) * 2014-12-25 2022-02-09 Meidensha Corporation Field emission device and reforming treatment method
DE102015220754B3 (de) * 2015-10-23 2017-02-09 Siemens Healthcare Gmbh Verfahren und Messeinrichtung zur Ermittlung des Elektrodenabstands von Röntgenröhren
EP3696845A1 (en) * 2019-02-12 2020-08-19 Malvern Panalytical B.V. X-ray tube and x-ray analysis system
CN111564349B (zh) * 2020-06-16 2025-05-02 昆山国力大功率器件工业技术研究院有限公司 可调节的冷阴极x射线管

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1310714A (en) * 1919-07-22 X-ray tube
US793112A (en) * 1903-10-06 1905-06-27 Rome V Wagner Vacuum-tube.
US1174044A (en) * 1915-05-05 1916-03-07 Elof Benson X-ray apparatus.
DE390479C (de) * 1919-12-12 1924-02-19 Julius Edgar Lilienfeld Dr Hochvakuumroehre, insbesondere Roentgenroehre, Ventilroehre, Senderoehre oder Verstaerkungsroehre
DE586817C (de) * 1930-12-11 1933-10-26 Radiologie Akt Ges Verfahren zur Brennfleckregelung fuer Roentgenroehren durch Veraenderung der emittierenden Gluehkathodenflaeche
GB419727A (en) * 1932-04-22 1934-11-19 Loewe Opta Gmbh A braun tube for oscillographic and television purposes
US2130020A (en) * 1934-03-13 1938-09-13 Harry B Mceuen Cathode filament control for x-ray tubes
US2157718A (en) * 1935-02-26 1939-05-09 Mutscheller Arthur X-ray tube
FR818476A (fr) * 1936-06-03 1937-09-27 Radiologie Cie Gle Perfectionnements aux ampoules radiogènes
GB495707A (en) * 1937-04-17 1938-11-17 Frederick Hermes Nicoll Improvements in or relating to focussing systems for use in electric discharge tubes
BE444002A (enExample) * 1939-12-02
BE475842A (enExample) * 1942-04-25
US2350269A (en) * 1942-06-15 1944-05-30 Gen Electric X Ray Corp X-ray tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1149115B (de) * 1959-06-11 1963-05-22 Hilger & Watts Ltd Feinfokus-Roentgenroehre
US3303372A (en) * 1964-08-20 1967-02-07 Dunlee Corp X-ray generator with a knife edged cold cathode emitter

Also Published As

Publication number Publication date
FR56195E (fr) 1952-09-18
BE469098A (enExample)
NL69809C (enExample)
SE122892C1 (enExample) 1948-10-05
FR944917A (fr) 1949-04-20
US2597817A (en) 1952-05-20
GB651455A (en) 1951-04-04
CH261755A (fr) 1949-05-31

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