ES344762A1 - Improvements in or relating to Magnetic Shift Arrangements for Electron Beams - Google Patents

Improvements in or relating to Magnetic Shift Arrangements for Electron Beams

Info

Publication number
ES344762A1
ES344762A1 ES344762A ES344762A ES344762A1 ES 344762 A1 ES344762 A1 ES 344762A1 ES 344762 A ES344762 A ES 344762A ES 344762 A ES344762 A ES 344762A ES 344762 A1 ES344762 A1 ES 344762A1
Authority
ES
Spain
Prior art keywords
polepieces
relating
electron beams
magnetic
magnetic shift
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
ES344762A
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.)
Telefunken Patentverwertungs GmbH
Original Assignee
Telefunken Patentverwertungs GmbH
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 Telefunken Patentverwertungs GmbH filed Critical Telefunken Patentverwertungs GmbH
Publication of ES344762A1 publication Critical patent/ES344762A1/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
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
    • H01J29/702—Convergence correction arrangements therefor
    • H01J29/705—Dynamic convergence systems
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/56—Correction of beam optics
    • H01J2229/568—Correction of beam optics using supplementary correction devices
    • H01J2229/5681—Correction of beam optics using supplementary correction devices magnetic
    • H01J2229/5682—Permanently magnetised materials, e.g. permanent magnets

Landscapes

  • Video Image Reproduction Devices For Color Tv Systems (AREA)

Abstract

A magnetic shift arrangement for shifting the beam of a cathode-ray tube e.g. the " blue " beam of a colour T.V. receiver, comprises a cylindrical magnet 1 magnetized along a diameter and disposed between two semi-cylindrical shells 3 and 4 of magnetic material, the shell 3 being provided with a projection 5 carrying a polepiece 6 and the shell 4 being provided with projections 7 and 8 carrying polepieces 9 and 10 so that the magnitude and direction of the magnetic field between the polepieces may be varied by rotating the magnet 1. The polepieces are shaped to follow the curvature of the neck of a cathode-ray tube, and the polepieces 9 and 10 may be riveted to a ring (13, Fig. 3, not shown) of non-magnetic material adapted to encircle the neck of the tube. A coil (15) may be wound round the projection 5 and supplied with parabolic and/or sawtooth currents to provide dynamic convergence.
ES344762A 1966-09-13 1967-09-05 Improvements in or relating to Magnetic Shift Arrangements for Electron Beams Expired ES344762A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DET0032044 1966-09-13

Publications (1)

Publication Number Publication Date
ES344762A1 true ES344762A1 (en) 1968-11-01

Family

ID=7556744

Family Applications (1)

Application Number Title Priority Date Filing Date
ES344762A Expired ES344762A1 (en) 1966-09-13 1967-09-05 Improvements in or relating to Magnetic Shift Arrangements for Electron Beams

Country Status (3)

Country Link
BE (1) BE703818A (en)
ES (1) ES344762A1 (en)
GB (1) GB1194008A (en)

Also Published As

Publication number Publication date
GB1194008A (en) 1970-06-10
BE703818A (en) 1968-02-01

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