GB505618A - Improvements in or relating to electron discharge devices, more particularly for television transmission systems - Google Patents

Improvements in or relating to electron discharge devices, more particularly for television transmission systems

Info

Publication number
GB505618A
GB505618A GB30796/37A GB3079637A GB505618A GB 505618 A GB505618 A GB 505618A GB 30796/37 A GB30796/37 A GB 30796/37A GB 3079637 A GB3079637 A GB 3079637A GB 505618 A GB505618 A GB 505618A
Authority
GB
United Kingdom
Prior art keywords
screen
grid
cathode
modulated
scanned
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
GB30796/37A
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 GB30796/37A priority Critical patent/GB505618A/en
Priority to US239750A priority patent/US2237679A/en
Publication of GB505618A publication Critical patent/GB505618A/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
    • H01J31/32—Tubes with image amplification section, e.g. image-iconoscope, supericonoscope

Landscapes

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

Abstract

505,618. Cathode-ray tubes; imagedissectors; electron multipliers. LUB SZYNSKI, H. G., and McGEE, J. D. Nov. 10, 1937, No. 30796. [Class 39 (i)] An optical image is formed on a grid covered with photo-voltaic material, such as selenium or cuprous oxide, on which is a metal mosaic; the grid is flooded or scanned by an electron beam which is modulated by the potentials formed in the photo-voltaic cells constituting the screen and the modulated beam used to produce picture signals. The Figure shows an arrangement in which the grid 1 is flooded with electrons from cathodes 4 enclosed in screens 11, which may be so arranged as to produce a virtual cathode in front of the screen as indicated by the dotted line 6. The modulated beam is focused in the ordinary way on a fluorescent screen 9 ; multiplying grids 12 may be provided. The following modifications are described : (a) the fluorescent screen 9 is replaced by a mosaic screen not sensitive to light, and in capacity relation with an electrode connected to the output circuit, the screen is scanned by a cathode ray, (b) the modulated beam is scanned over a receiving electrode, forming an image-dissector, (c) the flooding beam is replaced by a scanning beam which is received on an electrode connected to the output circuit; in this case an accelerating, grid may be placed in front of the screen, which is itself at cathode potential, the grid may itself be secondarily emissive and of louvre construction so as to stop the primary beam. Reference has been directed by the Comptroller to Specification 482,959.
GB30796/37A 1937-11-10 1937-11-10 Improvements in or relating to electron discharge devices, more particularly for television transmission systems Expired GB505618A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB30796/37A GB505618A (en) 1937-11-10 1937-11-10 Improvements in or relating to electron discharge devices, more particularly for television transmission systems
US239750A US2237679A (en) 1937-11-10 1938-11-10 Electron discharge device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB30796/37A GB505618A (en) 1937-11-10 1937-11-10 Improvements in or relating to electron discharge devices, more particularly for television transmission systems

Publications (1)

Publication Number Publication Date
GB505618A true GB505618A (en) 1939-05-10

Family

ID=10313258

Family Applications (1)

Application Number Title Priority Date Filing Date
GB30796/37A Expired GB505618A (en) 1937-11-10 1937-11-10 Improvements in or relating to electron discharge devices, more particularly for television transmission systems

Country Status (2)

Country Link
US (1) US2237679A (en)
GB (1) GB505618A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1091247B (en) * 1956-11-17 1960-10-20 Forschungslaboratorium Prof Dr Image converter tubes for image-shaped light pulses and very faint images

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2863941A (en) * 1944-03-18 1958-12-09 Rines Robert Harvey Radio picture system and apparatus
US2716203A (en) * 1947-06-23 1955-08-23 William J Sen Electronic image storage tube and system
US2586391A (en) * 1947-07-08 1952-02-19 Sheldon Edward Emanuel Device for projection of microwave images
GB790416A (en) * 1953-06-05 1958-02-12 Emi Ltd Improvements in or relating to electron discharge devices incorporating electron multipliers

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1091247B (en) * 1956-11-17 1960-10-20 Forschungslaboratorium Prof Dr Image converter tubes for image-shaped light pulses and very faint images

Also Published As

Publication number Publication date
US2237679A (en) 1941-04-08

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