FR2411487A1 - Cathode pour tube radiogene a foyer fin et grande perveance, et tube radiogene comportant une telle cathode - Google Patents

Cathode pour tube radiogene a foyer fin et grande perveance, et tube radiogene comportant une telle cathode

Info

Publication number
FR2411487A1
FR2411487A1 FR7737229A FR7737229A FR2411487A1 FR 2411487 A1 FR2411487 A1 FR 2411487A1 FR 7737229 A FR7737229 A FR 7737229A FR 7737229 A FR7737229 A FR 7737229A FR 2411487 A1 FR2411487 A1 FR 2411487A1
Authority
FR
France
Prior art keywords
focussing
anode
cathode
emitter
curvilinear shape
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
FR7737229A
Other languages
English (en)
Other versions
FR2411487B1 (fr
Inventor
Jacques Leguen
Jacques Delair
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.)
Compagnie Generale de Radiologie SA
Original Assignee
Compagnie Generale de Radiologie SA
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 Compagnie Generale de Radiologie SA filed Critical Compagnie Generale de Radiologie SA
Priority to FR7737229A priority Critical patent/FR2411487A1/fr
Publication of FR2411487A1 publication Critical patent/FR2411487A1/fr
Application granted granted Critical
Publication of FR2411487B1 publication Critical patent/FR2411487B1/fr
Granted 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
    • H01J35/147—Spot size 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
    • H01J35/066—Details of electron optical components, e.g. cathode cups
    • 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

Landscapes

  • X-Ray Techniques (AREA)

Abstract

L'INVENTION CONCERNE UNE CATHODE POUR TUBE RADIOGENE. LA CATHODE EST CARACTERISEE EN CE QUE L'EMETTEUR A UNE FORME CURVILIGNE ET EN CE QUE LE BLOC DE FOCALISATION EST CONCU DE MANIERE A CREER UN CHAMP FAVORISANT LA CONCENTRATION DU FAISCEAU D'ELECTRONS EN UN POINT D'IMPACT SUR L'ANODE. APPLICATION A DES TUBES RADIOGENES A FOYER FIN.
FR7737229A 1977-12-09 1977-12-09 Cathode pour tube radiogene a foyer fin et grande perveance, et tube radiogene comportant une telle cathode Granted FR2411487A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7737229A FR2411487A1 (fr) 1977-12-09 1977-12-09 Cathode pour tube radiogene a foyer fin et grande perveance, et tube radiogene comportant une telle cathode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7737229A FR2411487A1 (fr) 1977-12-09 1977-12-09 Cathode pour tube radiogene a foyer fin et grande perveance, et tube radiogene comportant une telle cathode

Publications (2)

Publication Number Publication Date
FR2411487A1 true FR2411487A1 (fr) 1979-07-06
FR2411487B1 FR2411487B1 (fr) 1980-10-31

Family

ID=9198689

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7737229A Granted FR2411487A1 (fr) 1977-12-09 1977-12-09 Cathode pour tube radiogene a foyer fin et grande perveance, et tube radiogene comportant une telle cathode

Country Status (1)

Country Link
FR (1) FR2411487A1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548447A1 (fr) * 1983-06-28 1985-01-04 Thomson Csf Tube a rayons x a foyer de forte intensite
EP0275592A1 (fr) * 1986-12-23 1988-07-27 Koninklijke Philips Electronics N.V. Tube à rayon X à foyer annulaire
US5044005A (en) * 1988-07-01 1991-08-27 General Electric Cgr S.A. X-ray tube with a flat cathode and indirect heating
US5060254A (en) * 1988-07-01 1991-10-22 General Electric Cgr S.A. X-ray tube having a variable focus which is self-adapted to the load
EP0578454A1 (fr) * 1992-07-09 1994-01-12 Varian Associates, Inc. Méthode mammographie et tube à rayons-X mammaire

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2548447A1 (fr) * 1983-06-28 1985-01-04 Thomson Csf Tube a rayons x a foyer de forte intensite
EP0275592A1 (fr) * 1986-12-23 1988-07-27 Koninklijke Philips Electronics N.V. Tube à rayon X à foyer annulaire
US5044005A (en) * 1988-07-01 1991-08-27 General Electric Cgr S.A. X-ray tube with a flat cathode and indirect heating
US5060254A (en) * 1988-07-01 1991-10-22 General Electric Cgr S.A. X-ray tube having a variable focus which is self-adapted to the load
EP0578454A1 (fr) * 1992-07-09 1994-01-12 Varian Associates, Inc. Méthode mammographie et tube à rayons-X mammaire

Also Published As

Publication number Publication date
FR2411487B1 (fr) 1980-10-31

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Legal Events

Date Code Title Description
ST Notification of lapse