FR755580A - Method and device for concentrating or pre-concentrating electron beams - Google Patents

Method and device for concentrating or pre-concentrating electron beams

Info

Publication number
FR755580A
FR755580A FR755580DA FR755580A FR 755580 A FR755580 A FR 755580A FR 755580D A FR755580D A FR 755580DA FR 755580 A FR755580 A FR 755580A
Authority
FR
France
Prior art keywords
concentrating
electron beams
beams
concentrating electron
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
Kurt Schlesinger
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.)
Loewe Opta GmbH
Original Assignee
Loewe Opta 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
Application filed by Loewe Opta GmbH filed Critical Loewe Opta GmbH
Application granted granted Critical
Publication of FR755580A publication Critical patent/FR755580A/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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/62—Electrostatic lenses
    • H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
    • H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun
FR755580D 1932-05-14 1933-05-13 Method and device for concentrating or pre-concentrating electron beams Expired FR755580A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE421050X 1932-05-14

Publications (1)

Publication Number Publication Date
FR755580A true FR755580A (en) 1933-11-27

Family

ID=6455496

Family Applications (1)

Application Number Title Priority Date Filing Date
FR755580D Expired FR755580A (en) 1932-05-14 1933-05-13 Method and device for concentrating or pre-concentrating electron beams

Country Status (4)

Country Link
US (1) US2003775A (en)
FR (1) FR755580A (en)
GB (1) GB421050A (en)
NL (1) NL41683C (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2430482A (en) * 1942-02-12 1947-11-11 Raytheon Mfg Co Gaseous electric lamp
US2438709A (en) * 1942-08-06 1948-03-30 Hartford Nat Bank & Trust Co Thermionic tube having secondary electron emissive electrode with surface and form variations
FR961000A (en) * 1945-09-22 1950-04-28
US3355618A (en) * 1965-10-21 1967-11-28 Rca Corp Electron gun for use in a cathode ray tube exhibiting enhanced electron emission

Also Published As

Publication number Publication date
US2003775A (en) 1935-06-04
NL41683C (en)
GB421050A (en) 1934-12-12

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