GB597469A - Improvements in or relating to cathode-ray tubes - Google Patents

Improvements in or relating to cathode-ray tubes

Info

Publication number
GB597469A
GB597469A GB21305/45A GB2130545A GB597469A GB 597469 A GB597469 A GB 597469A GB 21305/45 A GB21305/45 A GB 21305/45A GB 2130545 A GB2130545 A GB 2130545A GB 597469 A GB597469 A GB 597469A
Authority
GB
United Kingdom
Prior art keywords
cathode
ray tubes
relating
raster
electromagnet
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
GB21305/45A
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 Lamps Ltd
Koninklijke Philips NV
Original Assignee
Philips Lamps Ltd
Philips Gloeilampenfabrieken NV
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 Lamps Ltd, Philips Gloeilampenfabrieken NV filed Critical Philips Lamps Ltd
Publication of GB597469A publication Critical patent/GB597469A/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
    • H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

597,469. Cathode-ray tubes. PHILIPS LAMPS, Ltd. Aug. 21, 1945, No. 21305. Convention date, March 9, 1940. [Class 39 (i)] To give the beam an elongated section in a television tube two magnetizable rods 4, 5- which may be of nickel-are secured to the end of an electrode 3 in order to deform the focusing field produced by the electromagnet 2. The longer dimension of the beam is at right angles to the lines of the raster to avoid dark spaces. The subject-matter is identical with that of Specification 550,090. Specification 440,560 also is referred to.
GB21305/45A 1940-03-09 1945-08-21 Improvements in or relating to cathode-ray tubes Expired GB597469A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL219292X 1940-03-09

Publications (1)

Publication Number Publication Date
GB597469A true GB597469A (en) 1948-01-27

Family

ID=19779249

Family Applications (2)

Application Number Title Priority Date Filing Date
GB11660/41A Expired GB550090A (en) 1940-03-09 1941-09-11 Improvements in or relating to cathode-ray tubes with magnetic concentration
GB21305/45A Expired GB597469A (en) 1940-03-09 1945-08-21 Improvements in or relating to cathode-ray tubes

Family Applications Before (1)

Application Number Title Priority Date Filing Date
GB11660/41A Expired GB550090A (en) 1940-03-09 1941-09-11 Improvements in or relating to cathode-ray tubes with magnetic concentration

Country Status (5)

Country Link
BE (1) BE440890A (en)
CH (1) CH219292A (en)
FR (1) FR871623A (en)
GB (2) GB550090A (en)
NL (1) NL59170C (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE948787C (en) * 1951-06-21 1956-09-06 Max Grundig Electron-optical bandwidth control for television pictures reproduced point by point

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE620211A (en) * 1961-08-23
DE1200958B (en) * 1962-02-10 1965-09-16 Koerting Radio Werke G M B H Electron beam tube with an astigmatic, magnetic collecting lens to suppress the line structure
DE1215820B (en) * 1962-08-31 1966-05-05 Telefunken Patent Cathode ray tube with a multi-electrode beam generation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE948787C (en) * 1951-06-21 1956-09-06 Max Grundig Electron-optical bandwidth control for television pictures reproduced point by point

Also Published As

Publication number Publication date
GB550090A (en) 1942-12-22
CH219292A (en) 1942-01-31
BE440890A (en)
FR871623A (en) 1942-05-02
NL59170C (en)

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