GB473554A - Improvements in or relating to electron discharge devices for use in television and like systems - Google Patents

Improvements in or relating to electron discharge devices for use in television and like systems

Info

Publication number
GB473554A
GB473554A GB1075636A GB1075636A GB473554A GB 473554 A GB473554 A GB 473554A GB 1075636 A GB1075636 A GB 1075636A GB 1075636 A GB1075636 A GB 1075636A GB 473554 A GB473554 A GB 473554A
Authority
GB
United Kingdom
Prior art keywords
cathode
screen
picture
ray
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
GB1075636A
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.)
Baird Television Ltd
Original Assignee
Baird Television 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 Baird Television Ltd filed Critical Baird Television Ltd
Priority to GB1075636A priority Critical patent/GB473554A/en
Publication of GB473554A publication Critical patent/GB473554A/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

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

473,554. Cathode-ray tubes. BAIRD TELEVISION, Ltd., and SZEGHO, C. April 14, 1936, No. 10756. [Class 39 (i)] A tube for producing a light spot varying in intensity according to the brightness of successive points of a picture to be transmitted and so for controlling a photo-electric cell to produce picture signals has a screen 3 on one side of which an electric charge image corresponding to the picture is produced and the' other side of which is coated with fluorescent material 4 and scanned by a cathode-ray from a gun 5. An electron image is projected on to the screen 3 from a photo-electric cathode 1 on which the picture is projected. Negative charges build up on the screen 3 corresponding to the picture brightness and variably repel the cathode-ray to vary the brightness of the spot on the material 4 struck by the ray. This spot is projected on to a photo-electric cell 7 which may be integral with the tube 2. The screen 3 may be a thin mica sheet, a metallic mosaic on an insulating base or a mosaic of insulated transverse conductors as described in Specification 461,312 with a continuous fluorescent layer on one side. To prevent light produced by the material 4 from affecting the cathode 1, the screen 3 is opaque, or the material of the cathode 1 is insensitive to the fluorescent light, or the tube 2 is bent through a right-angle between the cathode 1 and screen 3, the electron image being correspondingly deflected.
GB1075636A 1936-04-14 1936-04-14 Improvements in or relating to electron discharge devices for use in television and like systems Expired GB473554A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1075636A GB473554A (en) 1936-04-14 1936-04-14 Improvements in or relating to electron discharge devices for use in television and like systems

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1075636A GB473554A (en) 1936-04-14 1936-04-14 Improvements in or relating to electron discharge devices for use in television and like systems

Publications (1)

Publication Number Publication Date
GB473554A true GB473554A (en) 1937-10-14

Family

ID=9973676

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1075636A Expired GB473554A (en) 1936-04-14 1936-04-14 Improvements in or relating to electron discharge devices for use in television and like systems

Country Status (1)

Country Link
GB (1) GB473554A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901659C (en) * 1947-01-13 1954-01-14 Cfcmug TV image decomposer tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE901659C (en) * 1947-01-13 1954-01-14 Cfcmug TV image decomposer tube

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