GB1457105A - Electron guns - Google Patents

Electron guns

Info

Publication number
GB1457105A
GB1457105A GB2616473A GB2616473A GB1457105A GB 1457105 A GB1457105 A GB 1457105A GB 2616473 A GB2616473 A GB 2616473A GB 2616473 A GB2616473 A GB 2616473A GB 1457105 A GB1457105 A GB 1457105A
Authority
GB
United Kingdom
Prior art keywords
diode
diodes
high current
electron beam
target
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
GB2616473A
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.)
Teledyne UK Ltd
Original Assignee
English Electric Valve 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
Application filed by English Electric Valve Co Ltd filed Critical English Electric Valve Co Ltd
Priority to GB2616473A priority Critical patent/GB1457105A/en
Priority to DE19732340690 priority patent/DE2340690B2/en
Priority to NL7406738A priority patent/NL7406738A/xx
Priority to FR7418197A priority patent/FR2232074B1/fr
Priority to JP6246574A priority patent/JPS5049975A/ja
Publication of GB1457105A publication Critical patent/GB1457105A/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
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/30—Cold cathodes, e.g. field-emissive cathode
    • H01J1/308—Semiconductor cathodes, e.g. cathodes with PN junction layers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/48—Electron guns
    • H01J2229/50—Plurality of guns or beams
    • H01J2229/505—Arrays

Landscapes

  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Cold Cathode And The Manufacture (AREA)
  • Electron Sources, Ion Sources (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

1457105 Cathode-ray tubes ENGLISH ELECTRIC VALVE CO Ltd 28 Feb 1974 [1 June 1973] 26164/73 Heading HID An electron gun, e.g. for a storage tube or a pyroelectric vidicon, comprises a semiconductor cold cathode having a first diode 6 providing a finely focused electron beam and a further diode arrangement such as diodes 8 disposed symmetrically around the first diode at a constant radial distance therefrom and providing a relatively high current electron beam, the first and further diodes being independently energizable through respective metallic layers 7, 9. In a storage tube the fine electron beam is used for reading or writing and the high current beam for erasure or flooding the target. In a vidicon the high current beam is used to ionize residual gas with the further diodes held at a relatively positive potential to the first diode which is thus unimpeded in its normal operation and if the potential of the further diodes is arranged to be that of the image highlights at the target, then image spreading from the highlights is reduced.
GB2616473A 1973-06-01 1973-06-01 Electron guns Expired GB1457105A (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
GB2616473A GB1457105A (en) 1973-06-01 1973-06-01 Electron guns
DE19732340690 DE2340690B2 (en) 1973-06-01 1973-08-10 COLD CATHODE ARRANGEMENT FOR ELECTRON BEAM GENERATING SYSTEMS
NL7406738A NL7406738A (en) 1973-06-01 1974-05-20
FR7418197A FR2232074B1 (en) 1973-06-01 1974-05-27
JP6246574A JPS5049975A (en) 1973-06-01 1974-06-01

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2616473A GB1457105A (en) 1973-06-01 1973-06-01 Electron guns

Publications (1)

Publication Number Publication Date
GB1457105A true GB1457105A (en) 1976-12-01

Family

ID=10239354

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2616473A Expired GB1457105A (en) 1973-06-01 1973-06-01 Electron guns

Country Status (5)

Country Link
JP (1) JPS5049975A (en)
DE (1) DE2340690B2 (en)
FR (1) FR2232074B1 (en)
GB (1) GB1457105A (en)
NL (1) NL7406738A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL184549C (en) * 1978-01-27 1989-08-16 Philips Nv SEMICONDUCTOR DEVICE FOR GENERATING AN ELECTRON POWER AND DISPLAY DEVICE EQUIPPED WITH SUCH A SEMICONDUCTOR DEVICE.
NL184589C (en) * 1979-07-13 1989-09-01 Philips Nv Semiconductor device for generating an electron beam and method of manufacturing such a semiconductor device.
JPS587740A (en) * 1981-06-30 1983-01-17 インタ−ナシヨナル・ビジネス・マシ−ンズ・コ−ポレ−シヨン Electron emission layer
DE3538175C2 (en) * 1984-11-21 1996-06-05 Philips Electronics Nv Semiconductor device for generating an electron current and its use

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1198567A (en) * 1968-05-17 1970-07-15 Gen Electric & English Elect Improvements in or relating to Electric Discharge Devices.
GB1303658A (en) * 1969-11-12 1973-01-17
GB1285866A (en) * 1970-06-22 1972-08-16 Gen Electric Co Ltd Improvements in or relating to cathodes for use in electric discharge devices

Also Published As

Publication number Publication date
FR2232074B1 (en) 1977-10-14
FR2232074A1 (en) 1974-12-27
JPS5049975A (en) 1975-05-06
DE2340690B2 (en) 1977-12-22
NL7406738A (en) 1974-12-03
DE2340690A1 (en) 1974-12-19

Similar Documents

Publication Publication Date Title
GB982671A (en) Improvements in or relating to ion guns
GB1334492A (en) Laminar flow electron gun
GB556046A (en) Improvements relating to electron guns such as are used in cathode ray tubes
GB1055729A (en) Cathode ray tubes
GB1234517A (en)
GB1457105A (en) Electron guns
GB1061986A (en) Image storage system
US2121356A (en) Electron tube
GB795627A (en) Improvements in or relating to storage tubes
GB896544A (en) Improvements in or relating to signal storage tubes
GB977428A (en) Image tubes
US2188288A (en) Arrangement for generating tilting oscillations
US3197661A (en) Signal storage tubes
GB562149A (en) Improvements in television pick-up tubes
GB1318098A (en) Apparatus for producing a fucused electron beam
US3234561A (en) Electrostatic writing tube
JPS5760658A (en) Cathode ray tube for light source
GB1013622A (en) Improvements in electron-beam tubes and electron guns for use therein
US3278780A (en) Storage display tube with a shield separator between the writing gun and the flood gun
NL256978A (en)
GB1173847A (en) A Method of Operating a Direct Viewing Bistable Storage Tube
SU428534A1 (en) ELECTRON-SEMICONDUCTOR NON-SYMMETRIC TRIGGER
GB842973A (en) Improvements in or relating to cathode ray tubes
GB820796A (en) Improvements in or relating to colour television and like systems
GB900363A (en) Improvements in or relating to signal storage tubes

Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee