GB517597A - Improvements in or relating to deflecting means for use with cathode ray tubes - Google Patents

Improvements in or relating to deflecting means for use with cathode ray tubes

Info

Publication number
GB517597A
GB517597A GB23330/38A GB2333038A GB517597A GB 517597 A GB517597 A GB 517597A GB 23330/38 A GB23330/38 A GB 23330/38A GB 2333038 A GB2333038 A GB 2333038A GB 517597 A GB517597 A GB 517597A
Authority
GB
United Kingdom
Prior art keywords
ray tubes
ordinate
coil
relating
cathode ray
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
GB23330/38A
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.)
GEORGE RICHARD TINGLEY
Baird Television Ltd
Original Assignee
GEORGE RICHARD TINGLEY
Baird Television 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 GEORGE RICHARD TINGLEY, Baird Television Ltd filed Critical GEORGE RICHARD TINGLEY
Priority to GB23330/38A priority Critical patent/GB517597A/en
Priority to US274353A priority patent/US2259233A/en
Publication of GB517597A publication Critical patent/GB517597A/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
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only

Landscapes

  • Water Treatment By Electricity Or Magnetism (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Details Of Television Scanning (AREA)

Abstract

517,597. Cathode-ray tubes. BAIRD TELEVISION, Ltd., and TINGLEY, G. R. Aug. 8, 1938, Nos. 23330 and 27367. [Class 39 (i)] To avoid keystone distortion in a cathoderay tube wherein the screen 13 is inclined to the axis of the first electro-magnetic system 18 giving deflection along one co-ordinate, the deflection in the other co-ordinate produced by the second electromagnet 16 is varied according to the line scanned ; this is obtained by inclined pole pieces 21 on which may be placed coils 22 for compensating any unbalanced D.C. component produced by coil 16. An additional yoke 7 may be used to give further scan amplitude correction ; if increase of gun voltage is used, to compensate for reduction in sensitivity the current through the coil on the yoke 7 may be increased. Specification 463,972 is referred to.
GB23330/38A 1938-08-08 1938-08-08 Improvements in or relating to deflecting means for use with cathode ray tubes Expired GB517597A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB23330/38A GB517597A (en) 1938-08-08 1938-08-08 Improvements in or relating to deflecting means for use with cathode ray tubes
US274353A US2259233A (en) 1938-08-08 1939-05-18 Cathode ray deflecting apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB23330/38A GB517597A (en) 1938-08-08 1938-08-08 Improvements in or relating to deflecting means for use with cathode ray tubes

Publications (1)

Publication Number Publication Date
GB517597A true GB517597A (en) 1940-02-02

Family

ID=10193862

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23330/38A Expired GB517597A (en) 1938-08-08 1938-08-08 Improvements in or relating to deflecting means for use with cathode ray tubes

Country Status (2)

Country Link
US (1) US2259233A (en)
GB (1) GB517597A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855877C (en) * 1941-03-08 1952-11-17 Telefunken Gmbh Electrostatic deflection device for cathode ray tubes

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2425125A (en) * 1940-07-20 1947-08-05 Hartford Nat Bank & Trust Co Cathode-ray tube with magnetic compensating means
US2459732A (en) * 1946-03-26 1949-01-18 Philco Corp Electrical system
US2455977A (en) * 1946-12-31 1948-12-14 Philco Corp Magnetic lens for correcting scanning defects
FR944238A (en) * 1947-03-13 1949-03-30 Csf Electronic optics correction method
US2586463A (en) * 1950-07-07 1952-02-19 Rca Corp Electron beam deflection system
US2824969A (en) * 1954-02-01 1958-02-25 Vickers Electrical Co Ltd Treatment of materials by electronic bombardment
US2872607A (en) * 1956-10-25 1959-02-03 Nat Res Dev Magnetic electron lenses

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE855877C (en) * 1941-03-08 1952-11-17 Telefunken Gmbh Electrostatic deflection device for cathode ray tubes

Also Published As

Publication number Publication date
US2259233A (en) 1941-10-14

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