GB491448A - Improvements in or relating to electron discharge devices - Google Patents

Improvements in or relating to electron discharge devices

Info

Publication number
GB491448A
GB491448A GB6054/37A GB605437A GB491448A GB 491448 A GB491448 A GB 491448A GB 6054/37 A GB6054/37 A GB 6054/37A GB 605437 A GB605437 A GB 605437A GB 491448 A GB491448 A GB 491448A
Authority
GB
United Kingdom
Prior art keywords
mosaic
focused
photo
class
group
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
GB6054/37A
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.)
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 GB491448A publication Critical patent/GB491448A/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
    • H01J31/50—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output
    • H01J31/52—Image-conversion or image-amplification tubes, i.e. having optical, X-ray, or analogous input, and optical output having grid-like image screen through which the electron ray or beam passes and by which the ray or beam is influenced before striking the luminescent output screen, 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
    • H01J31/28—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"

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

491,448. Supply systems for vacuum and low-pressure discharge apparatus. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. March 1, 1937, No. 6054. Convention date, Feb. 29, 1936. [Class 38 (iv)] [Also in Group XL] In television transmission a picture is focused on to a mosaic 33 of photo-electric elements insulated from each other and acting as a control grid for a cloud of electrons from a cathode source 2 of extended area ; the electron emission from the mosaic due to the picture varies the potential of the elements and thereby the number of electrons passing through the mosaic to form an electron image which is focused on to a fluorescent screen or on a double-sided mosaic 38 used in signal transmission. A suitably biassed grid 54 collects the secondaries emitted from the mosaic 38. An impulse generator 49 supplies the deflecting coils 47 and also the biassing current for the photo-electric mosaic 33. Specifications 315,362, [Class 40 (iii)], 472,859, and 472,861, [both in Group XL], are referred to.
GB6054/37A 1936-02-29 1937-03-01 Improvements in or relating to electron discharge devices Expired GB491448A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US66342A US2237896A (en) 1936-02-29 1936-02-29 Electronic device

Publications (1)

Publication Number Publication Date
GB491448A true GB491448A (en) 1938-09-01

Family

ID=22068874

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6054/37A Expired GB491448A (en) 1936-02-29 1937-03-01 Improvements in or relating to electron discharge devices

Country Status (3)

Country Link
US (1) US2237896A (en)
FR (1) FR816459A (en)
GB (1) GB491448A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611820A (en) * 1947-02-18 1952-09-23 Rca Corp Pickup tube beam-interrupting circuit
US2817785A (en) * 1950-03-03 1957-12-24 Ben J Chromy Vacuum tube and electric signalling apparatus
US2786157A (en) * 1951-05-09 1957-03-19 Pye Ltd Television pick-up tubes
US2875360A (en) * 1953-05-25 1959-02-24 Westinghouse Electric Corp Image intensifier

Also Published As

Publication number Publication date
US2237896A (en) 1941-04-08
FR816459A (en) 1937-08-09

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