GB984111A - Improvements in or relating to electron discharge devices - Google Patents

Improvements in or relating to electron discharge devices

Info

Publication number
GB984111A
GB984111A GB1113160A GB1113160A GB984111A GB 984111 A GB984111 A GB 984111A GB 1113160 A GB1113160 A GB 1113160A GB 1113160 A GB1113160 A GB 1113160A GB 984111 A GB984111 A GB 984111A
Authority
GB
United Kingdom
Prior art keywords
metal
electron
photo
cathode
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
GB1113160A
Inventor
Anthony Wilfred Bennett
David John Gibbons
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB1113160A priority Critical patent/GB984111A/en
Priority to FR857334A priority patent/FR1288345A/en
Priority to US170919A priority patent/US3138201A/en
Publication of GB984111A publication Critical patent/GB984111A/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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/39—Charge-storage screens
    • H01J29/41—Charge-storage screens using secondary emission, e.g. for supericonoscope
    • H01J29/413—Charge-storage screens using secondary emission, e.g. for supericonoscope for writing and reading of charge pattern on opposite sides of the target, e.g. for superorthicon
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F28—HEAT EXCHANGE IN GENERAL
    • F28D—HEAT-EXCHANGE APPARATUS, NOT PROVIDED FOR IN ANOTHER SUBCLASS, IN WHICH THE HEAT-EXCHANGE MEDIA DO NOT COME INTO DIRECT CONTACT
    • F28D7/00—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall
    • F28D7/02—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled
    • F28D7/024—Heat-exchange apparatus having stationary tubular conduit assemblies for both heat-exchange media, the media being in contact with different sides of a conduit wall the conduits being helically coiled the conduits of only one medium being helically coiled tubes, the coils having a cylindrical configuration
    • 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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/39—Charge-storage screens
    • H01J29/43—Charge-storage screens using photo-emissive mosaic, e.g. for orthicon, for iconoscope
    • H01J29/435—Charge-storage screens using photo-emissive mosaic, e.g. for orthicon, for iconoscope with a matrix of conductors traversing the target
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J31/00—Cathode ray tubes; Electron beam tubes
    • H01J31/08—Cathode ray tubes; Electron beam tubes having a screen on or from which an image or pattern is formed, picked up, converted, or stored
    • H01J31/26—Image pick-up tubes having an input of visible light and electric output
    • H01J31/265—Image pick-up tubes having an input of visible light and electric output with light spot scanning

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Formation Of Various Coating Films On Cathode Ray Tubes And Lamps (AREA)

Abstract

984,111. Television pick-up tubes. ELECTRIC & MUSICAL INDUSTRIES Ltd. March 22, 1961 [March 30, 1960], No. 11131/60. Drawings to Specification. Heading H1D. An electron discharge device, e.g. a television camera tube, has a photo-emissive cathode for converting a light image into an electron image and a charge storage target comprising a dielectric member having one surface disposed to receive the image electrons, wherein the surface is provided with a deposit of metal which increases the electron acceptance of the target relative to that of the dielectric member, the metal having a vapour pressure not exceeding 10<SP>-2</SP> mm. of mercury at 300‹ C., and a vapour pressure exceeding 10<SP>-2</SP> mm. of mercury at 700‹ C. The photo-cathode is sensitized by one or more alkali metals and then the deposit of metal on the target, e.g. antimony, tellurium or bismuth, is obtained by evaporating a bead of the metal in the tube until the electron acceptance of the surface is at a maximum as measured by the ratio Im/Ic, where Im is the current collected by a mesh electrode in proximity to the surface and Ic is the current supplied to the photo-cathode. Specification 971,534 is referred to.
GB1113160A 1960-03-30 1960-03-30 Improvements in or relating to electron discharge devices Expired GB984111A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1113160A GB984111A (en) 1960-03-30 1960-03-30 Improvements in or relating to electron discharge devices
FR857334A FR1288345A (en) 1960-03-30 1961-03-30 Further training in electronic discharge devices
US170919A US3138201A (en) 1960-03-30 1962-02-05 Heat exchanger with grooved tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1113160A GB984111A (en) 1960-03-30 1960-03-30 Improvements in or relating to electron discharge devices

Publications (1)

Publication Number Publication Date
GB984111A true GB984111A (en) 1965-02-24

Family

ID=9980612

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1113160A Expired GB984111A (en) 1960-03-30 1960-03-30 Improvements in or relating to electron discharge devices

Country Status (1)

Country Link
GB (1) GB984111A (en)

Similar Documents

Publication Publication Date Title
GB1142262A (en) Improvements in or relating to cathode ray tubes
GB879569A (en) Improvements in or relating to electron discharge devices and to circuit arrangements embodying such devices
GB1194288A (en) Improvements in or relating to Secondary Electron Multipliers.
US3109957A (en) Electron multiplying devices and circuit arrangements therefor
GB892504A (en) Improvements in or relating to a method of forming a photoemissive surface
GB984111A (en) Improvements in or relating to electron discharge devices
GB1321470A (en) Electron optics for a minifying image tube
GB977428A (en) Image tubes
GB976619A (en) Improvements in or relating to photo-emissive devices
US3350594A (en) Image intensifier having continuous conducting layer between porous metallic coating and luminescent layer
GB1023655A (en) Electron multiplier
US2899576A (en) Electron discharge i
GB1407056A (en) Television camera tube arrangement
SU118452A1 (en) TV broadcast tube
GB1368882A (en) Light amplification devices
US2173923A (en) Cathode ray tube
US3254252A (en) Image device
GB1175579A (en) An Electron Discharge Device including a Secondary-Emission Conductivity Target with Improved Scanning Surface
US2824247A (en) Image converter tubes
GB1046912A (en) Improvements in or relating to pick-up tubes
GB892713A (en) Improvements in or relating to television camera pick-up tube arrangements
GB2015817A (en) Television camera tube
JPS5595264A (en) Photoelectron multiplier
US2972072A (en) Electron discharge devices
GB1196222A (en) Television Camera including an Image Isocon Tube