FR1350210A - Focusing device - Google Patents

Focusing device

Info

Publication number
FR1350210A
FR1350210A FR923124A FR923124A FR1350210A FR 1350210 A FR1350210 A FR 1350210A FR 923124 A FR923124 A FR 923124A FR 923124 A FR923124 A FR 923124A FR 1350210 A FR1350210 A FR 1350210A
Authority
FR
France
Prior art keywords
focusing device
focusing
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
FR923124A
Other languages
French (fr)
Inventor
Jork Bretting
Hans-Juergen Griem
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.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs GmbH
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 DET21644A external-priority patent/DE1246891B/en
Application filed by Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Priority to FR923124A priority Critical patent/FR1350210A/en
Application granted granted Critical
Publication of FR1350210A publication Critical patent/FR1350210A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J23/00—Details of transit-time tubes of the types covered by group H01J25/00
    • H01J23/02—Electrodes; Magnetic control means; Screens
    • H01J23/08—Focusing arrangements, e.g. for concentrating stream of electrons, for preventing spreading of stream
    • H01J23/087—Magnetic focusing arrangements
    • H01J23/0873—Magnetic focusing arrangements with at least one axial-field reversal along the interaction space, e.g. P.P.M. focusing
FR923124A 1962-02-23 1963-01-30 Focusing device Expired FR1350210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR923124A FR1350210A (en) 1962-02-23 1963-01-30 Focusing device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DET21644A DE1246891B (en) 1962-02-23 1962-02-23 Magnetic focusing arrangement for the bundled guidance of an electron beam, especially for traveling wave tubes
FR923124A FR1350210A (en) 1962-02-23 1963-01-30 Focusing device

Publications (1)

Publication Number Publication Date
FR1350210A true FR1350210A (en) 1964-01-24

Family

ID=25999586

Family Applications (1)

Application Number Title Priority Date Filing Date
FR923124A Expired FR1350210A (en) 1962-02-23 1963-01-30 Focusing device

Country Status (1)

Country Link
FR (1) FR1350210A (en)

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