GB437323A - Improvements in electric discharge devices comprising luminescent materials - Google Patents

Improvements in electric discharge devices comprising luminescent materials

Info

Publication number
GB437323A
GB437323A GB2972634A GB2972634A GB437323A GB 437323 A GB437323 A GB 437323A GB 2972634 A GB2972634 A GB 2972634A GB 2972634 A GB2972634 A GB 2972634A GB 437323 A GB437323 A GB 437323A
Authority
GB
United Kingdom
Prior art keywords
luminescent material
cathode
electric discharge
luminescent materials
discharge devices
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
GB2972634A
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Priority to GB2972634A priority Critical patent/GB437323A/en
Publication of GB437323A publication Critical patent/GB437323A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J17/00—Gas-filled discharge tubes with solid cathode
    • H01J17/02—Details
    • H01J17/04—Electrodes; Screens
    • H01J17/06—Cathodes
    • H01J17/066—Cold cathodes
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2893/00—Discharge tubes and lamps
    • H01J2893/0064—Tubes with cold main electrodes (including cold cathodes)
    • H01J2893/0065—Electrode systems
    • H01J2893/0066—Construction, material, support, protection and temperature regulation of electrodes; Electrode cups

Landscapes

  • Luminescent Compositions (AREA)
  • Electroluminescent Light Sources (AREA)

Abstract

437,323. Discharge lamps. GENERAL ELECTRIC CO., Ltd., Magnet House, Kingsway, London.-(Patent - Treuhand - Ges. f³r Elektrische Gl³hlampen; 11, Ehrenbergstrasse, Berlin) Oct. 17, 1934, No. 29726. [Class 39 (i)] A discharge device comprises a non-thermionic cathode which carries luminescent material and also a material, such as alkaline earth metals and compounds thereof, which prolongs the life of the luminescent material by reducing the cathode drop. The material reducing the cathode fall may be placed under or beside, or mixed with, or cover in the form of a transparent layer, the luminescent material. The electrodes may be grid-shaped, and the filling may consist of gas or vapour or mixtures thereof.
GB2972634A 1934-10-17 1934-10-17 Improvements in electric discharge devices comprising luminescent materials Expired GB437323A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2972634A GB437323A (en) 1934-10-17 1934-10-17 Improvements in electric discharge devices comprising luminescent materials

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2972634A GB437323A (en) 1934-10-17 1934-10-17 Improvements in electric discharge devices comprising luminescent materials

Publications (1)

Publication Number Publication Date
GB437323A true GB437323A (en) 1935-10-28

Family

ID=10296140

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2972634A Expired GB437323A (en) 1934-10-17 1934-10-17 Improvements in electric discharge devices comprising luminescent materials

Country Status (1)

Country Link
GB (1) GB437323A (en)

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