GB729840A - Improvements in magnetic electron lenses - Google Patents

Improvements in magnetic electron lenses

Info

Publication number
GB729840A
GB729840A GB49/53A GB4953A GB729840A GB 729840 A GB729840 A GB 729840A GB 49/53 A GB49/53 A GB 49/53A GB 4953 A GB4953 A GB 4953A GB 729840 A GB729840 A GB 729840A
Authority
GB
United Kingdom
Prior art keywords
jan
adjustable
electron lenses
magnetic electron
magnets
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
GB49/53A
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.)
Philips Electrical Industries Ltd
Original Assignee
Philips Electrical 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 Philips Electrical Industries Ltd filed Critical Philips Electrical Industries Ltd
Publication of GB729840A publication Critical patent/GB729840A/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
    • H01J29/64—Magnetic lenses
    • H01J29/68—Magnetic lenses using permanent magnets only

Landscapes

  • Electron Beam Exposure (AREA)
GB49/53A 1952-01-04 1953-01-01 Improvements in magnetic electron lenses Expired GB729840A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL310959X 1952-01-04

Publications (1)

Publication Number Publication Date
GB729840A true GB729840A (en) 1955-05-11

Family

ID=19783636

Family Applications (1)

Application Number Title Priority Date Filing Date
GB49/53A Expired GB729840A (en) 1952-01-04 1953-01-01 Improvements in magnetic electron lenses

Country Status (7)

Country Link
US (1) US2849636A (enrdf_load_stackoverflow)
BE (1) BE516722A (enrdf_load_stackoverflow)
CH (1) CH310959A (enrdf_load_stackoverflow)
DE (1) DE976927C (enrdf_load_stackoverflow)
FR (1) FR1069392A (enrdf_load_stackoverflow)
GB (1) GB729840A (enrdf_load_stackoverflow)
NL (2) NL87342C (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354336A (en) * 1965-06-30 1967-11-21 Zenith Radio Corp Ring magnetized across thickness with two diametrically opposed and oppositely oriented groups of magnetic pole pairs

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3324433A (en) * 1963-12-27 1967-06-06 Hitachi Ltd Electron lens system excited by at least one permanent magnet
US3387158A (en) * 1965-04-14 1968-06-04 Sony Corp Focus magnet assembly for cathode ray tubes
NL7812540A (nl) * 1978-12-27 1980-07-01 Philips Nv Kathodestraalbuis.
NL8700528A (nl) * 1987-03-05 1988-10-03 Philips Nv Magnetische focusseerlens voor een kathodestraalbuis.
WO2013035290A1 (ja) * 2011-09-10 2013-03-14 本田技研工業株式会社 減衰力可変ダンパ
US11483919B2 (en) * 2019-03-27 2022-10-25 Huazhong University Of Science And Technology System of electron irradiation

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2102421A (en) * 1934-07-12 1937-12-14 Gen Electric Cathode ray oscillograph
FR796502A (fr) * 1934-10-19 1936-04-09 Fernseh Ag Aimant maintenant le rayon rectiligne dans les tubes de braun
DE682031C (de) * 1936-09-11 1939-10-06 Aeg Rotationssymmetrische magnetische Elektronenlinse aus Dauermagneten
DE720927C (de) * 1937-02-25 1942-05-19 Telefunken Gmbh Magnetische Elektronenlinse
DE688644C (de) * 1937-05-29 1940-02-27 Aeg r koaxialen Teillinsen besteht
GB522377A (en) * 1938-12-07 1940-06-17 Ferranti Ltd Improvements in or relating to focusing systems for electron beams
DE758548C (de) * 1939-02-10 1953-05-26 Telefunken Gmbh Magnetische Elektronenlinse ohne Bilddrehung
NL147275B (nl) * 1948-07-01 Plessey Uk Limited Elektrische momentschakelaar voor drukknopbediening.
US2582788A (en) * 1949-02-01 1952-01-15 Gen Electric Magnetic suspension for horizontal shafts
US2564737A (en) * 1949-12-23 1951-08-21 Rauland Corp Cathode-ray tube
US2615738A (en) * 1950-03-18 1952-10-28 Bailey Meter Co Linkage connector
US2565533A (en) * 1950-05-19 1951-08-28 Rauland Corp Cathode-ray tube
US2714678A (en) * 1950-09-03 1955-08-02 Siemens Ag Electron microscopes
BE503996A (enrdf_load_stackoverflow) * 1950-12-12
US2722617A (en) * 1951-11-28 1955-11-01 Hartford Nat Bank & Trust Comp Magnetic circuits and devices
NL87140C (enrdf_load_stackoverflow) * 1954-03-05

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3354336A (en) * 1965-06-30 1967-11-21 Zenith Radio Corp Ring magnetized across thickness with two diametrically opposed and oppositely oriented groups of magnetic pole pairs

Also Published As

Publication number Publication date
BE516722A (enrdf_load_stackoverflow)
FR1069392A (fr) 1954-07-07
CH310959A (de) 1955-11-15
NL166477B (nl)
US2849636A (en) 1958-08-26
NL87342C (enrdf_load_stackoverflow)
DE976927C (de) 1964-08-06

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