GB516455A - Improvements relating to cathode ray tubes - Google Patents

Improvements relating to cathode ray tubes

Info

Publication number
GB516455A
GB516455A GB19444/38A GB1944438A GB516455A GB 516455 A GB516455 A GB 516455A GB 19444/38 A GB19444/38 A GB 19444/38A GB 1944438 A GB1944438 A GB 1944438A GB 516455 A GB516455 A GB 516455A
Authority
GB
United Kingdom
Prior art keywords
ray tubes
cathode ray
cathode
improvements relating
gauze
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
GB19444/38A
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.)
British Thomson Houston Co Ltd
Original Assignee
British Thomson Houston 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
Priority claimed from US215749A external-priority patent/US2223040A/en
Application filed by British Thomson Houston Co Ltd filed Critical British Thomson Houston Co Ltd
Publication of GB516455A publication Critical patent/GB516455A/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
    • H01J29/481—Electron guns using field-emission, photo-emission, or secondary-emission electron source
    • 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
    • H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

516,455. Cathode-ray tubes. BRITISH THOMSON-HOUSTON CO., Ltd. June 30, 1938, No. 19444. Convention date, June 30, 1937. [Class 39 (i)] In a Braun tube emission is from a cold cathode K of point form ; it may project from a control electrode S, from which it is insulated. Emission is obtained by high voltage applied to a gauze or film N between the cathode and a lens E1-E3. The voltage of the first lens electrode E1 is less than that applied to the gauze. Alkaline coating may be applied to the point K.
GB19444/38A 1937-06-30 1938-06-30 Improvements relating to cathode ray tubes Expired GB516455A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE516455X 1937-06-30
US215749A US2223040A (en) 1937-06-30 1938-06-25 Electron discharge device
US245564A US2264541A (en) 1937-06-30 1938-12-14 Electron discharge device

Publications (1)

Publication Number Publication Date
GB516455A true GB516455A (en) 1940-01-02

Family

ID=32096468

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19444/38A Expired GB516455A (en) 1937-06-30 1938-06-30 Improvements relating to cathode ray tubes

Country Status (3)

Country Link
US (1) US2264541A (en)
FR (1) FR839862A (en)
GB (1) GB516455A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2545595A (en) * 1947-05-26 1951-03-20 Luis W Alvarez Linear accelerator
US2781472A (en) * 1950-12-13 1957-02-12 Sylvania Electric Prod Microwave amplifier
US3091719A (en) * 1959-04-14 1963-05-28 Field Emission Corp Microwave transducer

Also Published As

Publication number Publication date
US2264541A (en) 1941-12-02
FR839862A (en) 1939-04-13

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