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FR989343A - Improvements to electron beam focusing devices - Google Patents

Improvements to electron beam focusing devices

Info

Publication number
FR989343A
FR989343A FR989343DA FR989343A FR 989343 A FR989343 A FR 989343A FR 989343D A FR989343D A FR 989343DA FR 989343 A FR989343 A FR 989343A
Authority
FR
France
Prior art keywords
electron beam
beam focusing
focusing devices
devices
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)
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.)
Compteurs Schlumberger SA
Original Assignee
Compteurs Schlumberger 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 Compteurs Schlumberger SA filed Critical Compteurs Schlumberger SA
Application granted granted Critical
Publication of FR989343A publication Critical patent/FR989343A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N3/00—Scanning details of television systems; Combination thereof with generation of supply voltages
    • H04N3/10—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical
    • H04N3/16—Scanning details of television systems; Combination thereof with generation of supply voltages by means not exclusively optical-mechanical by deflecting electron beam in cathode-ray tube, e.g. scanning corrections
    • H04N3/26—Modifications of scanning arrangements to improve focusing

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
FR989343D 1949-04-25 1949-04-25 Improvements to electron beam focusing devices Expired FR989343A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR989343T 1949-04-25

Publications (1)

Publication Number Publication Date
FR989343A true FR989343A (en) 1951-09-07

Family

ID=9540180

Family Applications (1)

Application Number Title Priority Date Filing Date
FR989343D Expired FR989343A (en) 1949-04-25 1949-04-25 Improvements to electron beam focusing devices

Country Status (1)

Country Link
FR (1) FR989343A (en)

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