GB529523A - Improvements in electron discharge devices - Google Patents

Improvements in electron discharge devices

Info

Publication number
GB529523A
GB529523A GB15769/39A GB1576939A GB529523A GB 529523 A GB529523 A GB 529523A GB 15769/39 A GB15769/39 A GB 15769/39A GB 1576939 A GB1576939 A GB 1576939A GB 529523 A GB529523 A GB 529523A
Authority
GB
United Kingdom
Prior art keywords
plates
screen
potential
deflection
tube
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
GB15769/39A
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.)
AC Cossor Ltd
Original Assignee
AC Cossor 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 to BE481370D priority Critical patent/BE481370A/xx
Application filed by AC Cossor Ltd filed Critical AC Cossor Ltd
Priority to GB15769/39A priority patent/GB529523A/en
Publication of GB529523A publication Critical patent/GB529523A/en
Priority to US5847A priority patent/US2524606A/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
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/74—Deflecting by electric fields only

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

529,523. Cathode-ray tubes. COSSOR, Ltd., A. C., and SHELTON, E. E. May 26, 1939, No. 15769. [Class 39 (i)] To avoid " trapezium, pin-cushion and barrel " distortion of the raster in a cathode ray tube an interplate screen 4 is used between the electromagnetic or electro-static Y deflection means 2 for giving vertical movement and the plates 5, 6 giving the X or horizontal deflection ; these plates are (i) concave at their front and rear edges 5a, 5b and (ii) are convex so that their surfaces are nearer together at some intermediate part 5c, 6c than at their ends. The interplate screen 4 is curved-cylindrically or sphericallyabout the line or centre of Y deflection, and has a slot allowing a beam angle of 30 degrees. The deflection potential may be applied to only one or other of the X plates. To prevent secondary electrons from the screen returning to the X plates electrodes 7, 8 are placed between these plates and the screen and have a potential equal to the maximum potential attained by the X plates; the tube has a coating also at this potential. When used in a tube with a gas filling the plates 7, 8 would serve to increase the plate to plate impedance.
GB15769/39A 1939-05-26 1939-05-26 Improvements in electron discharge devices Expired GB529523A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
BE481370D BE481370A (en) 1939-05-26
GB15769/39A GB529523A (en) 1939-05-26 1939-05-26 Improvements in electron discharge devices
US5847A US2524606A (en) 1939-05-26 1948-02-02 Electron discharge device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15769/39A GB529523A (en) 1939-05-26 1939-05-26 Improvements in electron discharge devices

Publications (1)

Publication Number Publication Date
GB529523A true GB529523A (en) 1940-11-22

Family

ID=10065146

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15769/39A Expired GB529523A (en) 1939-05-26 1939-05-26 Improvements in electron discharge devices

Country Status (3)

Country Link
US (1) US2524606A (en)
BE (1) BE481370A (en)
GB (1) GB529523A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB704878A (en) * 1948-11-26 1954-03-03 Siemens Ag Improvements in or relating to cathode ray oscillographs
DE962919C (en) * 1952-10-28 1957-05-02 Telefunken Gmbh Electron beam tube with electrostatic deflection system
NL188970B (en) * 1953-07-18 Sony Corp DETECTION SWITCH.
US3151270A (en) * 1961-03-31 1964-09-29 Bell Telephone Labor Inc Electron ribbon beam encoder tube with beam tilt control

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE431937A (en) * 1936-07-31
US2228958A (en) * 1938-11-23 1941-01-14 Fides Gmbh Cathode ray tube
US2266621A (en) * 1940-08-23 1941-12-16 Rca Corp Cathode ray tube system

Also Published As

Publication number Publication date
US2524606A (en) 1950-10-03
BE481370A (en)

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