FR917145A - Système de lentille électronique - Google Patents

Système de lentille électronique

Info

Publication number
FR917145A
FR917145A FR917145DA FR917145A FR 917145 A FR917145 A FR 917145A FR 917145D A FR917145D A FR 917145DA FR 917145 A FR917145 A FR 917145A
Authority
FR
France
Prior art keywords
lens system
electronic lens
electronic
lens
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
English (en)
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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
Application filed by EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Application granted granted Critical
Publication of FR917145A publication Critical patent/FR917145A/fr
Expired legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L9/00—Details or accessories of suction cleaners, e.g. mechanical means for controlling the suction or for effecting pulsating action; Storing devices specially adapted to suction cleaners or parts thereof; Carrying-vehicles specially adapted for suction cleaners
    • A47L9/24—Hoses or pipes; Hose or pipe couplings
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Electron Beam Exposure (AREA)
FR917145D 1942-03-24 1945-11-09 Système de lentille électronique Expired FR917145A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3922/42A GB573901A (en) 1942-03-24 1942-03-24 Improvements in electron lens systems

Publications (1)

Publication Number Publication Date
FR917145A true FR917145A (fr) 1946-12-26

Family

ID=9767419

Family Applications (1)

Application Number Title Priority Date Filing Date
FR917145D Expired FR917145A (fr) 1942-03-24 1945-11-09 Système de lentille électronique

Country Status (4)

Country Link
US (1) US2441769A (fr)
FR (1) FR917145A (fr)
GB (1) GB573901A (fr)
NL (1) NL83700C (fr)

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1605781A (en) * 1923-12-21 1926-11-02 Walter koqowski aitd waltes gbossee
GB402460A (en) * 1932-06-02 1933-12-04 Emi Ltd Improvements in or relating to cathode ray tubes
US2080449A (en) * 1933-06-12 1937-05-18 Rca Corp Cathode ray tube
NL45873C (fr) * 1934-11-08
US2202631A (en) * 1937-08-20 1940-05-28 Rca Corp Cathode ray tube
US2179097A (en) * 1938-02-10 1939-11-07 Rca Corp Cathode ray tube electrode structures
US2293539A (en) * 1939-08-16 1942-08-18 Bell Telephone Labor Inc Electron discharge device
US2312723A (en) * 1939-08-16 1943-03-02 Bell Telephone Labor Inc Electron discharge device
BE444002A (fr) * 1939-12-02
US2303166A (en) * 1941-01-21 1942-11-24 Bell Telephone Labor Inc Electron discharge device
US2351501A (en) * 1941-05-31 1944-06-13 Bell Telephone Labor Inc Electron lens structure
US2277414A (en) * 1941-07-02 1942-03-24 Gen Electric Electron lens
US2351757A (en) * 1941-07-29 1944-06-20 Bell Telephone Labor Inc Electron discharge device
US2289071A (en) * 1941-10-03 1942-07-07 Gen Electric Electron lens
US2318423A (en) * 1941-10-28 1943-05-04 Bell Telephone Labor Inc Electron discharge device

Also Published As

Publication number Publication date
US2441769A (en) 1948-05-18
NL83700C (fr)
GB573901A (en) 1945-12-12

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