GB392781A - Improvements in or relating to cathode ray tubes - Google Patents

Improvements in or relating to cathode ray tubes

Info

Publication number
GB392781A
GB392781A GB22868/32A GB2286832A GB392781A GB 392781 A GB392781 A GB 392781A GB 22868/32 A GB22868/32 A GB 22868/32A GB 2286832 A GB2286832 A GB 2286832A GB 392781 A GB392781 A GB 392781A
Authority
GB
United Kingdom
Prior art keywords
cathode
ray tubes
electrode
aug
relating
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
GB22868/32A
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.)
Telefunken AG
Original Assignee
Telefunken AG
Telefunken Gesellschaft fuer Drahtlose Telegraphie 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 Telefunken AG, Telefunken Gesellschaft fuer Drahtlose Telegraphie mbH filed Critical Telefunken AG
Publication of GB392781A publication Critical patent/GB392781A/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
    • H01J29/48—Electron guns
    • H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes

Abstract

392,781. Cathode-ray tubes. TELEFUNKEN GES. FUR DRAHTLOSE TELEGRAPHIE, 12, Hallesches Ufer, Berlin. Aug. 15; 1932, No. 22868. Convention date, Aug. 15, 1931. [Class 39 (i).] Cathode-ray tubes have a very small cathode K surrounded by a biased, openended, cylindrical, concentrating electrode Z and opposite an aperture in a flat accelerating anode A formed by a circular disc, the distance a from the cathode to the end of the electrode Z nearer the anode A not exceeding half the diameter b of the electrode Z. The cathode K may be directly or indirectly heated. The Specification as open to inspection under Sect. 91 comprises also the use of an apertured screen in front of an electron source as the effective cathode. This subject-matter does not appear in the Specification as accepted.
GB22868/32A 1931-08-15 1932-08-15 Improvements in or relating to cathode ray tubes Expired GB392781A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE392781X 1931-08-15

Publications (1)

Publication Number Publication Date
GB392781A true GB392781A (en) 1933-05-25

Family

ID=6387686

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22868/32A Expired GB392781A (en) 1931-08-15 1932-08-15 Improvements in or relating to cathode ray tubes

Country Status (1)

Country Link
GB (1) GB392781A (en)

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