FR1258733A - Electrostatic focusing device - Google Patents

Electrostatic focusing device

Info

Publication number
FR1258733A
FR1258733A FR829169A FR829169A FR1258733A FR 1258733 A FR1258733 A FR 1258733A FR 829169 A FR829169 A FR 829169A FR 829169 A FR829169 A FR 829169A FR 1258733 A FR1258733 A FR 1258733A
Authority
FR
France
Prior art keywords
focusing device
electrostatic focusing
electrostatic
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
FR829169A
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.)
MO Valve Co Ltd
Original Assignee
MO Valve Co Ltd
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 GB19396/59A external-priority patent/GB894210A/en
Application filed by MO Valve Co Ltd filed Critical MO Valve Co Ltd
Priority to FR829169A priority Critical patent/FR1258733A/en
Application granted granted Critical
Publication of FR1258733A publication Critical patent/FR1258733A/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
    • H01J23/083—Electrostatic focusing arrangements
FR829169A 1959-06-05 1960-06-04 Electrostatic focusing device Expired FR1258733A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR829169A FR1258733A (en) 1959-06-05 1960-06-04 Electrostatic focusing device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB19396/59A GB894210A (en) 1959-06-05 1959-06-05 Improvements in or relating to electrostatic electron beam focussing devices
FR829169A FR1258733A (en) 1959-06-05 1960-06-04 Electrostatic focusing device

Publications (1)

Publication Number Publication Date
FR1258733A true FR1258733A (en) 1961-04-14

Family

ID=26186283

Family Applications (1)

Application Number Title Priority Date Filing Date
FR829169A Expired FR1258733A (en) 1959-06-05 1960-06-04 Electrostatic focusing device

Country Status (1)

Country Link
FR (1) FR1258733A (en)

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