GB896738A - Improvements in or relating to electron discharge devices - Google Patents

Improvements in or relating to electron discharge devices

Info

Publication number
GB896738A
GB896738A GB38728/57A GB3872857A GB896738A GB 896738 A GB896738 A GB 896738A GB 38728/57 A GB38728/57 A GB 38728/57A GB 3872857 A GB3872857 A GB 3872857A GB 896738 A GB896738 A GB 896738A
Authority
GB
United Kingdom
Prior art keywords
target
electrode
electrons
electron
mosaic
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
GB38728/57A
Inventor
Hans Gerhard Lubszynski
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 GB38728/57A priority Critical patent/GB896738A/en
Priority to US779467A priority patent/US2972072A/en
Publication of GB896738A publication Critical patent/GB896738A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J31/28—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen
    • H01J31/40—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having grid-like image screen through which the electron ray passes and by which the ray is influenced before striking the output electrode, i.e. having "triode action"
    • 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
    • H01J31/48—Tubes with amplification of output effected by electron multiplier arrangements within the vacuum space

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

896,738. Television pick-up tubes. ELECTRIC & MUSICAL INDUSTRIES Ltd. Nov. 14, 1958 [Dec. 13, 1957], No. 38728/57. Class 39(1). A cathode-ray tube includes a foraminated target 5 of substantially transparent material having a light-sensitive surface 6 on one side thereof. In operation an optical image is projected through the target on to the lightsensitive surface which is preferably scanned by a low-velocity electron beam. Some of the electrons restore the elemental areas of the surface to an equilibrium potential, preferably the cathode potential, while the remainder are caused to pass though the interstices of the target to form an output beam which may be directed into an electron multiplier in order to generate picture signals. The light-sensitive surface may comprise a mosaic of photoemissive elements, e.g. an antimony or silver mosaic suitably sensitized, or a layer of material exhibiting a photo-voltaic effect. The target is preferably made from a photosensitive glass and may have a transparent conducting coating on its other surface to replace electrode 14 which draws electrons through the interstices of the target. Electrode 8 serves as an ion trap mesh while electrode 9 serves as a stabilizing mesh and may also constitute a common electrode for the capacities of the mosaic elements. Instead of employing electrodes 16, 17 as an electron mirror to direct electrons into multiplier 18 a transparent electrode may be disposed in the optical path to the target which can cause reflection of electrons or which is secondary-electron emissive; Specification 469,033 is referred to.
GB38728/57A 1957-12-13 1957-12-13 Improvements in or relating to electron discharge devices Expired GB896738A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB38728/57A GB896738A (en) 1957-12-13 1957-12-13 Improvements in or relating to electron discharge devices
US779467A US2972072A (en) 1957-12-13 1958-12-10 Electron discharge devices

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB38728/57A GB896738A (en) 1957-12-13 1957-12-13 Improvements in or relating to electron discharge devices

Publications (1)

Publication Number Publication Date
GB896738A true GB896738A (en) 1962-05-16

Family

ID=10405321

Family Applications (1)

Application Number Title Priority Date Filing Date
GB38728/57A Expired GB896738A (en) 1957-12-13 1957-12-13 Improvements in or relating to electron discharge devices

Country Status (2)

Country Link
US (1) US2972072A (en)
GB (1) GB896738A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4492981A (en) * 1981-01-29 1985-01-08 Nippon Hoso Kyokai TV Camera tube

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735935A (en) * 1956-02-21 Image-translating device
US2237681A (en) * 1937-12-03 1941-04-08 Emi Ltd Television transmitting tube
US2249041A (en) * 1938-03-31 1941-07-15 Rca Corp Electron-image device
US2618761A (en) * 1949-02-23 1952-11-18 Rca Corp Negative stored charge pickup tube
US2875349A (en) * 1955-01-20 1959-02-24 Westinghouse Electric Corp Image intensifier
US2879419A (en) * 1956-12-26 1959-03-24 Gen Electric Target electrode assembly

Also Published As

Publication number Publication date
US2972072A (en) 1961-02-14

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