GB520106A - Improvements in or relating to television and like transmitting cathode ray tubes - Google Patents

Improvements in or relating to television and like transmitting cathode ray tubes

Info

Publication number
GB520106A
GB520106A GB31016/38A GB3101638A GB520106A GB 520106 A GB520106 A GB 520106A GB 31016/38 A GB31016/38 A GB 31016/38A GB 3101638 A GB3101638 A GB 3101638A GB 520106 A GB520106 A GB 520106A
Authority
GB
United Kingdom
Prior art keywords
screen
television
image
electron gun
electrons
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
GB31016/38A
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.)
Marconis Wireless Telegraph Co Ltd
BAE Systems Electronics Ltd
Original Assignee
Marconis Wireless Telegraph Co Ltd
Marconi 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 Marconis Wireless Telegraph Co Ltd, Marconi Co Ltd filed Critical Marconis Wireless Telegraph Co Ltd
Publication of GB520106A publication Critical patent/GB520106A/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
    • H01J31/30—Image pick-up tubes having an input of visible light and electric output with electron ray scanning the image screen having regulation of screen potential at anode potential, e.g. iconoscope
    • 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
    • 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

Landscapes

  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

520,106. Cathode-ray tubes ; television. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. Oct. 26, 1938, No. 31016. Convention date, Oct. 26, 1937. [Classes 39 (i) and 40 (iii)] In a television transmitter of the iconoscope type in which the signal currents are derived from the electrons emitted by the mosaic and picked up by an anode the back plate of the screen is replaced by a " virtual " back plate produced by projecting electrons on to it from cathodes on the side remote from the electron gun ; this renders it possible to employ a transparent screen and project the image to be transmitted on to the side remote from the electron gun, the screen being normal to the axis of the tube. In the arrangement shown the screen 16 is of mica and carries the mosaic 17, the image being focussed on to it through a flat space 5 in the tube opposite to the electron gun 2. Electrons are projected on to the rear of the screen from cathodes 18, 18a and patch produced may be given a special shape by means of anodes 19, 19a having perforations of the shape desired. A second image, to be combined with that projected on to the screen, can be formed by means of electron guns 21, 21a arranged to project suitably modulated beams on to the back of the screen at the point opposite to that struck by the ray from the gun 2, the different rays being deflected synchronously.
GB31016/38A 1937-10-26 1938-10-26 Improvements in or relating to television and like transmitting cathode ray tubes Expired GB520106A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US171021A US2195489A (en) 1937-10-26 1937-10-26 Television transmitting tube

Publications (1)

Publication Number Publication Date
GB520106A true GB520106A (en) 1940-04-15

Family

ID=22622182

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31016/38A Expired GB520106A (en) 1937-10-26 1938-10-26 Improvements in or relating to television and like transmitting cathode ray tubes

Country Status (4)

Country Link
US (1) US2195489A (en)
FR (1) FR844947A (en)
GB (1) GB520106A (en)
NL (1) NL54042C (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2549072A (en) * 1946-02-27 1951-04-17 Rca Corp Recording apparatus for radar systems
US2601452A (en) * 1946-09-27 1952-06-24 Rca Corp Cathode-ray storage tube
FR957706A (en) * 1946-12-26 1950-02-24
US2777970A (en) * 1950-10-03 1957-01-15 Paul K Weimer Television camera storage tube
US2724771A (en) * 1950-12-30 1955-11-22 Bell Telephone Labor Inc Pulse generator utilizing bombardment induced conductivity
US2663012A (en) * 1952-01-30 1953-12-15 John R Beers Projection television tube
US2894160A (en) * 1954-09-09 1959-07-07 Sheldon Edward Emanuel Electron microscopes
NL268860A (en) * 1959-04-17
GR900100663A (en) * 1990-09-03 1992-09-11 Panagiotis Karogiannis Television set
DE102006015893A1 (en) * 2006-04-05 2007-10-11 Daimlerchrysler Ag Gas exchange valve actuating device

Also Published As

Publication number Publication date
US2195489A (en) 1940-04-02
NL54042C (en)
FR844947A (en) 1939-08-04

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