FR939447A - Device for focusing an electron beam - Google Patents

Device for focusing an electron beam

Info

Publication number
FR939447A
FR939447A FR939447DA FR939447A FR 939447 A FR939447 A FR 939447A FR 939447D A FR939447D A FR 939447DA FR 939447 A FR939447 A FR 939447A
Authority
FR
France
Prior art keywords
focusing
electron beam
electron
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
French (fr)
Inventor
Charles Ernest Lock
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Application granted granted Critical
Publication of FR939447A publication Critical patent/FR939447A/en
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
    • H01J29/54—Arrangements for centring ray or beam
    • 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
    • H01J29/68—Magnetic lenses using permanent magnets only
FR939447D 1946-02-27 1946-12-20 Device for focusing an electron beam Expired FR939447A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB613846A GB615553A (en) 1946-02-27 1946-02-27 Improvements in or relating to devices for focusing an electron beam

Publications (1)

Publication Number Publication Date
FR939447A true FR939447A (en) 1948-11-15

Family

ID=9809118

Family Applications (1)

Application Number Title Priority Date Filing Date
FR939447D Expired FR939447A (en) 1946-02-27 1946-12-20 Device for focusing an electron beam

Country Status (4)

Country Link
BE (1) BE470596A (en)
ES (1) ES176695A1 (en)
FR (1) FR939447A (en)
GB (1) GB615553A (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB670431A (en) * 1949-02-24 1952-04-16 Patrick Richard James Court Magnetic focussing device for cathode ray tubes
US2533687A (en) * 1949-05-27 1950-12-12 Quam Nichols Company Magnetic focusing device
GB678297A (en) * 1949-09-14 1952-09-03 John Dudley Francis Green Suspension arrangement for cathode ray tubes
US2533688A (en) * 1950-01-31 1950-12-12 Quam Nichols Company Focusing device
US2594099A (en) * 1950-04-22 1952-04-22 Ite Circuit Breaker Ltd Focusing coil for cathode-ray tubes
NL160744B (en) * 1950-05-04 Mengele & Soehne Masch Karl BENDING MACHINING EQUIPMENT.
US2533689A (en) * 1950-06-28 1950-12-12 Quam Nichols Company Magnetic focusing device
US2581657A (en) * 1950-07-26 1952-01-08 Myron R Heppner Focusing and centering device for cathode-ray tubes
US2568668A (en) * 1950-08-18 1951-09-18 Best Mfg Co Inc Cathode-ray tube focusing device of the permanent magnet type
US2592185A (en) * 1950-12-09 1952-04-08 Quam Nichols Company Focusing device
US2580606A (en) * 1951-03-21 1952-01-01 Best Mfg Company Inc Cathode-ray tube focusing device

Also Published As

Publication number Publication date
ES176695A1 (en) 1947-06-01
GB615553A (en) 1949-01-07
BE470596A (en)

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