ES218620A1 - Cathode ray tubes for television and like purposes - Google Patents

Cathode ray tubes for television and like purposes

Info

Publication number
ES218620A1
ES218620A1 ES0218620A ES218620A ES218620A1 ES 218620 A1 ES218620 A1 ES 218620A1 ES 0218620 A ES0218620 A ES 0218620A ES 218620 A ES218620 A ES 218620A ES 218620 A1 ES218620 A1 ES 218620A1
Authority
ES
Spain
Prior art keywords
neck
television
cathode ray
ray tubes
magnetic
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
ES0218620A
Other languages
Spanish (es)
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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
Application filed by Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of ES218620A1 publication Critical patent/ES218620A1/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
    • H01J29/86—Vessels; Containers; Vacuum locks
    • H01J29/867—Means associated with the outside of the vessel for shielding, e.g. magnetic shields
    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/06—Screens for shielding; Masks interposed in the electron stream
    • 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

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
  • Investigating Or Analyzing Materials By The Use Of Magnetic Means (AREA)
  • Geophysics And Detection Of Objects (AREA)

Abstract

Improvements, in cathode ray tubes for television and similar purposes, characterized by having focus and deflection coils around their neck close to each other and by mounting between the coils and the neck at least one magnetic screen subdivided and built to provide a large number of magnetic steps that together offer a relatively low reductance to the lines of magnetic force of practically radial direction with respect to the neck of the tube, and a relatively high reductance to the lines of force directed practically parallel to the axis of the tube. (Machine-translation by Google Translate, not legally binding)
ES0218620A 1954-01-15 1954-11-24 Cathode ray tubes for television and like purposes Expired ES218620A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1329/54A GB769401A (en) 1954-01-15 1954-01-15 Improvements in or relating to television and like cathode ray tube apparatus having magnetic screens

Publications (1)

Publication Number Publication Date
ES218620A1 true ES218620A1 (en) 1955-04-16

Family

ID=9720104

Family Applications (1)

Application Number Title Priority Date Filing Date
ES0218620A Expired ES218620A1 (en) 1954-01-15 1954-11-24 Cathode ray tubes for television and like purposes

Country Status (5)

Country Link
US (1) US2748305A (en)
ES (1) ES218620A1 (en)
FR (1) FR1115306A (en)
GB (1) GB769401A (en)
NL (2) NL193774A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2834901A (en) * 1954-05-06 1958-05-13 Rca Corp Cathode ray tube adjunct
BE585351A (en) * 1958-12-06
JPS63144505A (en) * 1986-12-09 1988-06-16 Mitsubishi Electric Corp Magnetic field leakage canceling device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2414925A (en) * 1944-01-26 1947-01-28 Farnsworth Television & Radio Scanning and focusing yoke
BE480411A (en) * 1947-02-19

Also Published As

Publication number Publication date
FR1115306A (en) 1956-04-23
NL99008C (en)
NL193774A (en)
GB769401A (en) 1957-03-06
US2748305A (en) 1956-05-29

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