EP0115731A3 - Tube à rayons X à balayage - Google Patents

Tube à rayons X à balayage Download PDF

Info

Publication number
EP0115731A3
EP0115731A3 EP83402529A EP83402529A EP0115731A3 EP 0115731 A3 EP0115731 A3 EP 0115731A3 EP 83402529 A EP83402529 A EP 83402529A EP 83402529 A EP83402529 A EP 83402529A EP 0115731 A3 EP0115731 A3 EP 0115731A3
Authority
EP
European Patent Office
Prior art keywords
filament
ray tube
scanning
electron beam
concentration
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.)
Withdrawn
Application number
EP83402529A
Other languages
German (de)
English (en)
Other versions
EP0115731A2 (fr
Inventor
André Plessis
Emile Gabbay
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.)
General Electric CGR SA
Original Assignee
Thomson CGR
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 Thomson CGR filed Critical Thomson CGR
Publication of EP0115731A2 publication Critical patent/EP0115731A2/fr
Publication of EP0115731A3 publication Critical patent/EP0115731A3/fr
Withdrawn legal-status Critical Current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
    • H01J35/14—Arrangements for concentrating, focusing, or directing the cathode ray
    • 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)

Abstract

L'invention concerne un tube à rayons X à balayage, dans lequel est réalisé une déflexion d'un faisceau d'électrons (F).
Le tube à rayons X (10) selon l'invention comporte notam­ ment un filament (2), un élément de concentration (3) adossé au filament (2) et une cible anodique (4); le filament (2) et l'élé­ ment de concentration (3) forment une cathode (C1) émettant le faisceau d'électrons (F). L'élément de concentration (3) est constitué par deux pièces métalliques (12, 13) électriquement isolées l'une de l'autre et du filament (2). Une polarisation indé­ pendante des deux pièces métalliques (12, 13) par rapport au filament (2) permet d'obtenir une déflexion du faisceau d'élec­ trons (F) par effet électrostatique.
L'invention est applicable notamment aux installations de radiologie numérique.
EP83402529A 1982-12-30 1983-12-23 Tube à rayons X à balayage Withdrawn EP0115731A3 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8222072A FR2538948B3 (fr) 1982-12-30 1982-12-30 Tube a rayons x a balayage
FR8222072 1982-12-30

Publications (2)

Publication Number Publication Date
EP0115731A2 EP0115731A2 (fr) 1984-08-15
EP0115731A3 true EP0115731A3 (fr) 1985-11-21

Family

ID=9280681

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83402529A Withdrawn EP0115731A3 (fr) 1982-12-30 1983-12-23 Tube à rayons X à balayage

Country Status (2)

Country Link
EP (1) EP0115731A3 (fr)
FR (1) FR2538948B3 (fr)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4689809A (en) * 1982-11-23 1987-08-25 Elscint, Inc. X-ray tube having an adjustable focal spot
FR2658002B1 (fr) * 1990-02-02 1992-05-22 Gen Electric Cgr Cathode a deflexion en diedre pour tube a rayons x.
FR2667723B1 (fr) * 1990-10-09 1992-11-27 Gen Electric Cgr Dispositif d'obtention et de commutation de hautes tensions de polarisation d'electrodes de tube a rayons x.
FR2675629B1 (fr) * 1991-04-17 1997-05-16 Gen Electric Cgr Cathode pour tube a rayons x et tube ainsi obtenu.
DE19510048C2 (de) * 1995-03-20 1998-05-14 Siemens Ag Röntgenröhre

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646379A (en) * 1970-05-18 1972-02-29 Machlett Lab Inc X-ray tube having controllable focal spot size
DE2249365A1 (de) * 1972-10-09 1974-04-25 Siemens Ag Roentgenroehre
US3875028A (en) * 1972-08-30 1975-04-01 Picker Corp Method of manufacture of x-ray tube having focusing cup with non emitting coating
US3962583A (en) * 1974-12-30 1976-06-08 The Machlett Laboratories, Incorporated X-ray tube focusing means
EP0032385A1 (fr) * 1980-01-14 1981-07-22 Siemens Aktiengesellschaft Dispositif cathodique pour tube à rayons X
FR2536583A1 (fr) * 1982-11-23 1984-05-25 Elscint Inc Tube a rayons x comportant un foyer reglable

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3646379A (en) * 1970-05-18 1972-02-29 Machlett Lab Inc X-ray tube having controllable focal spot size
US3875028A (en) * 1972-08-30 1975-04-01 Picker Corp Method of manufacture of x-ray tube having focusing cup with non emitting coating
DE2249365A1 (de) * 1972-10-09 1974-04-25 Siemens Ag Roentgenroehre
US3962583A (en) * 1974-12-30 1976-06-08 The Machlett Laboratories, Incorporated X-ray tube focusing means
EP0032385A1 (fr) * 1980-01-14 1981-07-22 Siemens Aktiengesellschaft Dispositif cathodique pour tube à rayons X
FR2536583A1 (fr) * 1982-11-23 1984-05-25 Elscint Inc Tube a rayons x comportant un foyer reglable

Also Published As

Publication number Publication date
FR2538948B3 (fr) 1985-10-18
FR2538948A1 (fr) 1984-07-06
EP0115731A2 (fr) 1984-08-15

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

Designated state(s): CH DE FR GB LI

PUAL Search report despatched

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STAA Information on the status of an ep patent application or granted ep patent

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18D Application deemed to be withdrawn

Effective date: 19860722

RIN1 Information on inventor provided before grant (corrected)

Inventor name: GABBAY, EMILE

Inventor name: PLESSIS, ANDRE