GB478475A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB478475A
GB478475A GB11736/37A GB1173637A GB478475A GB 478475 A GB478475 A GB 478475A GB 11736/37 A GB11736/37 A GB 11736/37A GB 1173637 A GB1173637 A GB 1173637A GB 478475 A GB478475 A GB 478475A
Authority
GB
United Kingdom
Prior art keywords
plates
ray tubes
relating
cathode ray
cathode
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
GB11736/37A
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.)
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph 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 filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB478475A publication Critical patent/GB478475A/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
    • H01J29/74—Deflecting by electric fields only

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

478,475. Cathode - ray tubes. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 23, 1937, No. 11736. Convention date, May 12, 1936. [Class 39 (i)] In a cathode-ray tube having electrostatic deflection plates, de-focusing and " keystoning " errors are avoided by forming the two plates 33, 35 with a curved edge 37 and providing on the longitudinal edges of one of the plates 35 flanges 39 extending towards the other plate 33. The edges 37 are arcuate, the centre of curvature coinciding with the point of deflection of the beam produced by the other pair of deflecting plates 29.
GB11736/37A 1936-05-12 1937-04-23 Improvements in or relating to cathode ray tubes Expired GB478475A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US79341A US2099994A (en) 1936-05-12 1936-05-12 Electron tube

Publications (1)

Publication Number Publication Date
GB478475A true GB478475A (en) 1938-01-19

Family

ID=22149911

Family Applications (1)

Application Number Title Priority Date Filing Date
GB11736/37A Expired GB478475A (en) 1936-05-12 1937-04-23 Improvements in or relating to cathode ray tubes

Country Status (5)

Country Link
US (1) US2099994A (en)
BE (1) BE421505A (en)
DE (1) DE691572C (en)
FR (1) FR821509A (en)
GB (1) GB478475A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744015C (en) * 1938-04-25 1944-01-07 Philips Patentverwaltung Cathode ray tubes with two pairs of deflection plates that are perpendicular to one another and operated with asymmetrical deflection voltages

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2623692A (en) * 1942-11-30 1952-12-30 Cossor Ltd A C Electrical fire control calculating apparatus
DE975306C (en) * 1952-06-29 1961-11-02 Telefunken Patent Electron beam tube with a collecting screen and an electrostatic deflection system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE744015C (en) * 1938-04-25 1944-01-07 Philips Patentverwaltung Cathode ray tubes with two pairs of deflection plates that are perpendicular to one another and operated with asymmetrical deflection voltages

Also Published As

Publication number Publication date
FR821509A (en) 1937-12-07
BE421505A (en)
DE691572C (en) 1940-05-30
US2099994A (en) 1937-11-23

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