GB507381A - Improvements in or relating to cathode-ray tubes - Google Patents

Improvements in or relating to cathode-ray tubes

Info

Publication number
GB507381A
GB507381A GB17731/38A GB1773138A GB507381A GB 507381 A GB507381 A GB 507381A GB 17731/38 A GB17731/38 A GB 17731/38A GB 1773138 A GB1773138 A GB 1773138A GB 507381 A GB507381 A GB 507381A
Authority
GB
United Kingdom
Prior art keywords
metal layer
june
binder
screen
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
GB17731/38A
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.)
Koninklijke Philips NV
Original Assignee
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 Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB507381A publication Critical patent/GB507381A/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

Landscapes

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

Abstract

507,381. Luminescent screens for discharge tubes. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. June 14, 1938, No. 17731. Convention date, June 17, 1937. [Class 39 (i)] A Braun tube comprises a metal layer between the fluorescent material of the luminous screen and the glass wall of the tube, the latter being satin-frosted on the side provided with the metal layer, and the metal layer is formed by evaporation or cathodic disintegration in such thickness that the externally incident light is absorbed to a greater extent than the fluorescent light passing through the metal layer. The metal layer may be made of a metal belonging to the eighth group of the periodic system, and is preferably rhodium, especially when phosphoric acid is the binder. Tungsten or molybdenum may also be used. Nitrocellulose may be used as a binder. The conductive layer may extend beyond the screen and serve to collect electrons.
GB17731/38A 1937-06-17 1938-06-14 Improvements in or relating to cathode-ray tubes Expired GB507381A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE507381X 1937-06-17

Publications (1)

Publication Number Publication Date
GB507381A true GB507381A (en) 1939-06-14

Family

ID=6546747

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17731/38A Expired GB507381A (en) 1937-06-17 1938-06-14 Improvements in or relating to cathode-ray tubes

Country Status (1)

Country Link
GB (1) GB507381A (en)

Similar Documents

Publication Publication Date Title
GB1250425A (en)
GB541910A (en) Cathode ray tube envelope
US2224324A (en) Electric discharge tube
GB507381A (en) Improvements in or relating to cathode-ray tubes
GB475772A (en) Improvements in electric discharge tubes
GB534627A (en) Improvements in or relating to electron focussing systems
GB498914A (en) Improved electric discharge tube comprising a fluorescent screen
GB494651A (en) Improvements in electron discharge devices used as voltage indicators
GB501718A (en) Improved electric discharge tube comprising a fluorescent screen
DE897746C (en) Luminescent phosphate
GB516620A (en) Improvements in cathode ray tubes
CH184117A (en) Electric discharge tube.
GB495632A (en) Improvements in or relating to electric high-pressure metal-vapour discharge tubes
GB495551A (en) Improvements in or relating to electric gas-discharge tubes
GB514881A (en) X-ray converter
CH205835A (en) Electric mercury vapor lamp.
GB351894A (en) Improvements in or relating to electric gas- or vapour-filled arc discharge tubes
GB491573A (en) Control diaphragm for electron rays, especially for television purposes
GB496085A (en) Improvements in electric discharge tubes containing luminous screens
GB416616A (en) Improvements in electric discharge tubes
GB485645A (en) Improvements in cathode ray tubes
GB506143A (en) Improvements in iconoscopes
GB495550A (en) Improvements in or relating to electric gas-discharge tubes
GB491208A (en) Improvements in or relating to electric gas-discharge tubes
GB496778A (en) Improvements in or relating to television or like systems and electron discharge apparatus therefor