GB822485A - Improvements in or relating to electron lenses - Google Patents

Improvements in or relating to electron lenses

Info

Publication number
GB822485A
GB822485A GB34410/55A GB3441055A GB822485A GB 822485 A GB822485 A GB 822485A GB 34410/55 A GB34410/55 A GB 34410/55A GB 3441055 A GB3441055 A GB 3441055A GB 822485 A GB822485 A GB 822485A
Authority
GB
United Kingdom
Prior art keywords
teeth
ring
magnets
profiled
edges
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
GB34410/55A
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 GB822485A publication Critical patent/GB822485A/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

  • Particle Accelerators (AREA)
  • Prostheses (AREA)
  • Hard Magnetic Materials (AREA)
GB34410/55A 1954-12-04 1955-12-01 Improvements in or relating to electron lenses Expired GB822485A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL822485X 1954-12-04

Publications (1)

Publication Number Publication Date
GB822485A true GB822485A (en) 1959-10-28

Family

ID=19840915

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34410/55A Expired GB822485A (en) 1954-12-04 1955-12-01 Improvements in or relating to electron lenses

Country Status (5)

Country Link
US (1) US2873413A (enrdf_load_stackoverflow)
DE (1) DE1031442B (enrdf_load_stackoverflow)
FR (1) FR1139451A (enrdf_load_stackoverflow)
GB (1) GB822485A (enrdf_load_stackoverflow)
NL (1) NL86361C (enrdf_load_stackoverflow)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB885251A (en) * 1958-05-13 1961-12-20 Mullard Ltd Improvements in permanent magnet systems
US3146191A (en) * 1961-05-12 1964-08-25 Indiana General Corp Variable magnetic strength permanent magnetic drum
US3387158A (en) * 1965-04-14 1968-06-04 Sony Corp Focus magnet assembly for cathode ray tubes

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2333230A (en) * 1940-12-24 1943-11-02 O S Walker Co Inc Magnetic chuck
US2369769A (en) * 1942-09-04 1945-02-20 American Viscose Corp Apparatus for the liquid treatment of yarn and the like
US2608665A (en) * 1950-07-29 1952-08-26 Gen Electric Permanent magnet focusing device
US2714678A (en) * 1950-09-03 1955-08-02 Siemens Ag Electron microscopes
BE522315A (enrdf_load_stackoverflow) * 1952-08-26

Also Published As

Publication number Publication date
DE1031442B (de) 1958-06-04
US2873413A (en) 1959-02-10
NL86361C (enrdf_load_stackoverflow)
FR1139451A (fr) 1957-07-01

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