GB585585A - Improvements in or relating to cathode ray tube screens - Google Patents

Improvements in or relating to cathode ray tube screens

Info

Publication number
GB585585A
GB585585A GB497044A GB497044A GB585585A GB 585585 A GB585585 A GB 585585A GB 497044 A GB497044 A GB 497044A GB 497044 A GB497044 A GB 497044A GB 585585 A GB585585 A GB 585585A
Authority
GB
United Kingdom
Prior art keywords
luminescence
ray tube
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
GB497044A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB497044A priority Critical patent/GB585585A/en
Publication of GB585585A publication Critical patent/GB585585A/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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/18—Luminescent screens
    • H01J29/187—Luminescent screens screens with more than one luminescent material (as mixtures for the treatment of the screens)

Landscapes

  • Manufacture Of Electron Tubes, Discharge Lamp Vessels, Lead-In Wires, And The Like (AREA)

Abstract

585,585. Cathode - ray tubes. MERTON, SIR T. R. March 16, 1944, No. 4970. Drawings to Specification. [Class 39 (i)] A cathode-ray tube is provided with a screen formed of two or more materials, one of which exhibits short duration luminescence upon electron bombardment and another of which is excited to long duration luminescence by the first luminescence. The first material may be calcium tungstate and the second zinc sulphide. The latter may. be embedded in a layer of sodium silicate varnish and the calcium tungstate. is then dusted on the surface or the two substances may be applied to opposite sides of a mica sheet. Alternatively, the two may be mixed together before being formed into a screen.
GB497044A 1944-03-16 1944-03-16 Improvements in or relating to cathode ray tube screens Expired GB585585A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB497044A GB585585A (en) 1944-03-16 1944-03-16 Improvements in or relating to cathode ray tube screens

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB497044A GB585585A (en) 1944-03-16 1944-03-16 Improvements in or relating to cathode ray tube screens

Publications (1)

Publication Number Publication Date
GB585585A true GB585585A (en) 1947-02-12

Family

ID=9787313

Family Applications (1)

Application Number Title Priority Date Filing Date
GB497044A Expired GB585585A (en) 1944-03-16 1944-03-16 Improvements in or relating to cathode ray tube screens

Country Status (1)

Country Link
GB (1) GB585585A (en)

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