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GB2438275B - X-ray tube electron sources - Google Patents

X-ray tube electron sources

Info

Publication number
GB2438275B
GB2438275B GB0705705A GB0705705A GB2438275B GB 2438275 B GB2438275 B GB 2438275B GB 0705705 A GB0705705 A GB 0705705A GB 0705705 A GB0705705 A GB 0705705A GB 2438275 B GB2438275 B GB 2438275B
Authority
GB
United Kingdom
Prior art keywords
ray tube
electron sources
tube electron
sources
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 - Lifetime
Application number
GB0705705A
Other versions
GB0705705D0 (en
GB2438275A (en
Inventor
Edward James Morton
Russell David Luggar
Paul De Antonis
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.)
CXR Ltd
Original Assignee
CXR Ltd
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
Priority claimed from GBGB0309383.8A external-priority patent/GB0309383D0/en
Application filed by CXR Ltd filed Critical CXR Ltd
Priority to GB0705705A priority Critical patent/GB2438275B/en
Publication of GB0705705D0 publication Critical patent/GB0705705D0/en
Publication of GB2438275A publication Critical patent/GB2438275A/en
Application granted granted Critical
Publication of GB2438275B publication Critical patent/GB2438275B/en
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
    • 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
    • H01J35/14—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
    • 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
    • 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
GB0705705A 2003-04-25 2004-04-23 X-ray tube electron sources Expired - Lifetime GB2438275B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB0705705A GB2438275B (en) 2003-04-25 2004-04-23 X-ray tube electron sources

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
GBGB0309383.8A GB0309383D0 (en) 2003-04-25 2003-04-25 X-ray tube electron sources
GB0705705A GB2438275B (en) 2003-04-25 2004-04-23 X-ray tube electron sources
GB0520908A GB2418529B (en) 2003-04-25 2004-04-23 X-ray tube electron sources

Publications (3)

Publication Number Publication Date
GB0705705D0 GB0705705D0 (en) 2007-05-02
GB2438275A GB2438275A (en) 2007-11-21
GB2438275B true GB2438275B (en) 2008-02-20

Family

ID=38984574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0705705A Expired - Lifetime GB2438275B (en) 2003-04-25 2004-04-23 X-ray tube electron sources

Country Status (1)

Country Link
GB (1) GB2438275B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274005A (en) * 1978-09-29 1981-06-16 Tokyo Shibaura Denki Kabushiki Kaisha X-ray apparatus for computed tomography scanner
US5633907A (en) * 1996-03-21 1997-05-27 General Electric Company X-ray tube electron beam formation and focusing
US20020094064A1 (en) * 2000-10-06 2002-07-18 Zhou Otto Z. Large-area individually addressable multi-beam x-ray system and method of forming same

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4274005A (en) * 1978-09-29 1981-06-16 Tokyo Shibaura Denki Kabushiki Kaisha X-ray apparatus for computed tomography scanner
US5633907A (en) * 1996-03-21 1997-05-27 General Electric Company X-ray tube electron beam formation and focusing
US20020094064A1 (en) * 2000-10-06 2002-07-18 Zhou Otto Z. Large-area individually addressable multi-beam x-ray system and method of forming same

Also Published As

Publication number Publication date
GB0705705D0 (en) 2007-05-02
GB2438275A (en) 2007-11-21

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)

Free format text: REGISTERED BETWEEN 20230330 AND 20230405

PE20 Patent expired after termination of 20 years

Expiry date: 20240422