GB469033A - Improvements in and relating to television and like systems - Google Patents

Improvements in and relating to television and like systems

Info

Publication number
GB469033A
GB469033A GB1483/36A GB148336A GB469033A GB 469033 A GB469033 A GB 469033A GB 1483/36 A GB1483/36 A GB 1483/36A GB 148336 A GB148336 A GB 148336A GB 469033 A GB469033 A GB 469033A
Authority
GB
United Kingdom
Prior art keywords
mosaic
grid
elements
gun
photo
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
GB1483/36A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB1483/36A priority Critical patent/GB469033A/en
Priority to US120701A priority patent/US2280922A/en
Priority to DEE49220D priority patent/DE757332C/en
Publication of GB469033A publication Critical patent/GB469033A/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

Abstract

469,033. Cathode ray tubes. LUBSZYNSKI, H. G. Jan. 16, 1936, No. 1483. [Class 39 (i)] In a television or like system a mosaicscreen 3 is permeable by an electron beam supplied from a gun 5 and suitably deflected over the mosaic ; on the side of the mosaic remote from the gun the beam impacts on a target electrode 12, Fig. 1, to liberate secondary electrons which may be collected by an output anode 14 direct or after further impact on one or more target electrodes 13, suitable focusing coils 17, 18 being provided. An optical image is focused on the mosaic which has a grid-like form with photo-electric sensitive elements 9 ; the photo-electron emission from the elements controls the electro-static potential of the screen and thereby influences the strength of the beam from the gun passing through the mosaic A positively biassed shield 11 protects the target 12 from the mosaic and a grid 10 collects the emitted photo-electrons from the mosaic. To reduce the speed of the electron beam to the mosaic, the latter may be stabilized at cathode potential or a decelerating grid may be placed before the grid 10. The mosaic is formed of a mesh of fine, glass or enamel-covered wire with a layer of silver on one side, baked to break the silver into discrete elements, which are caesium coated. The charges on the elements of the mosaic may leak away slowly to the wire coils of the mesh forming the base of the mosaic. As shown the beam impacts the mosaic normally and the image projection is inclined ; these conditions may be reversed. The anode 14 may be in the form of a fluorescent screen ; the device may then be used as an image amplifier. With a high frequency multiplier, one 21 of the impact electrodes 21, 22 has a gap through which the beam from the mosaic may pass for multiplication; with this construction, if the optical image is projected normally on the mosaic and the electron beam at an angle, slats may be provided to cover the aperture in the electrode 21, the sides of these slats remote from the mosaic being coated to act as part of the electrode 21.
GB1483/36A 1936-01-16 1936-01-16 Improvements in and relating to television and like systems Expired GB469033A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB1483/36A GB469033A (en) 1936-01-16 1936-01-16 Improvements in and relating to television and like systems
US120701A US2280922A (en) 1936-01-16 1937-01-15 Electron discharge device
DEE49220D DE757332C (en) 1936-01-16 1937-01-17 Saving image transmitter tubes with electron-permeable mosaic electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1483/36A GB469033A (en) 1936-01-16 1936-01-16 Improvements in and relating to television and like systems

Publications (1)

Publication Number Publication Date
GB469033A true GB469033A (en) 1937-07-16

Family

ID=9722789

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1483/36A Expired GB469033A (en) 1936-01-16 1936-01-16 Improvements in and relating to television and like systems

Country Status (3)

Country Link
US (1) US2280922A (en)
DE (1) DE757332C (en)
GB (1) GB469033A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2598612A (en) * 1948-12-30 1952-05-27 Times Facsimile Corp Modulating system and apparatus
US2777970A (en) * 1950-10-03 1957-01-15 Paul K Weimer Television camera storage tube
US2824249A (en) * 1954-02-09 1958-02-18 Hughes Aircraft Co Storage grid for direct-viewing storage tubes

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1903569A (en) * 1926-09-15 1933-04-11 Kenneth W Jarvis Electron tube
GB313456A (en) * 1928-06-11 1930-11-11 Koloman Tihanyi Improvements in television apparatus
FR768473A (en) * 1933-02-23 1934-08-07 Marconi Wireless Telegraph Co Improvements in television, image transmission and the like
GB419452A (en) * 1933-05-05 1934-11-05 Emi Ltd Improvements in or relating to television

Also Published As

Publication number Publication date
US2280922A (en) 1942-04-28
DE757332C (en) 1952-03-03

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