FR1081703A - Perfectionnements aux dispositifs de focalisation dans les tubes cathodiques - Google Patents

Perfectionnements aux dispositifs de focalisation dans les tubes cathodiques

Info

Publication number
FR1081703A
FR1081703A FR1081703DA FR1081703A FR 1081703 A FR1081703 A FR 1081703A FR 1081703D A FR1081703D A FR 1081703DA FR 1081703 A FR1081703 A FR 1081703A
Authority
FR
France
Prior art keywords
cathode ray
ray tubes
focusing devices
focusing
devices
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
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.)
Compagnie Francaise Thomson Houston SA
Original Assignee
Compagnie Francaise Thomson Houston 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 Francaise Thomson Houston SA filed Critical Compagnie Francaise Thomson Houston SA
Application granted granted Critical
Publication of FR1081703A publication Critical patent/FR1081703A/fr
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J29/00—Details of cathode-ray tubes or of electron-beam tubes of the types covered by group H01J31/00
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/64—Magnetic lenses
FR1081703D 1952-08-02 1953-07-29 Perfectionnements aux dispositifs de focalisation dans les tubes cathodiques Expired FR1081703A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US302313A US2718606A (en) 1952-08-02 1952-08-02 Combination electromagnet-permanent magnet focusing devices

Publications (1)

Publication Number Publication Date
FR1081703A true FR1081703A (fr) 1954-12-22

Family

ID=23167221

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1081703D Expired FR1081703A (fr) 1952-08-02 1953-07-29 Perfectionnements aux dispositifs de focalisation dans les tubes cathodiques

Country Status (2)

Country Link
US (1) US2718606A (fr)
FR (1) FR1081703A (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2880340A (en) * 1955-01-31 1959-03-31 Motorola Inc Color television receiver
US2897390A (en) * 1955-12-23 1959-07-28 Glaser Steers Corp Magnetic convergence assembly
BE620211A (fr) * 1961-08-23
FR1475013A (fr) * 1966-02-18 1967-03-31 Csf Dispositif de réglage pour structures à aimant permanent
DE3321117A1 (de) * 1983-06-10 1984-12-13 Siemens AG, 1000 Berlin und 8000 München Magnetische multipolanordnung n-ter ordnung
EP0551027B1 (fr) * 1992-01-10 1997-09-17 THOMSON TUBES & DISPLAYS S.A. Appareil à focalisation magnétique
SG92590A1 (en) * 1992-03-27 2002-11-19 Thomson Tubes & Displays Permanent magnet focus unit wihh integral astigmatism corrector
US5489826A (en) * 1994-08-08 1996-02-06 Thomson Consumer Electronics, Inc. Focus coil current generator for a cathode ray tube
KR101318592B1 (ko) * 2009-11-26 2013-10-15 가부시키가이샤 히다치 하이테크놀로지즈 주사 전자 현미경

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB494839A (en) * 1937-05-01 1938-11-01 British Thomson Houston Co Ltd Improvements in and relating to cathode ray apparatus
GB539422A (en) * 1940-02-06 1941-09-10 Standard Telephones Cables Ltd Improvements in or relating to arrangments for producing concentrated beams of electrons, particularly for electron discharge apparatus of the velocity modulation type
US2533687A (en) * 1949-05-27 1950-12-12 Quam Nichols Company Magnetic focusing device
US2563116A (en) * 1950-06-10 1951-08-07 American Molded Products Co Shell for deflection yokes

Also Published As

Publication number Publication date
US2718606A (en) 1955-09-20

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