GB984674A - Improvements in or relating to image pick-up tubes - Google Patents

Improvements in or relating to image pick-up tubes

Info

Publication number
GB984674A
GB984674A GB1087060A GB1087060A GB984674A GB 984674 A GB984674 A GB 984674A GB 1087060 A GB1087060 A GB 1087060A GB 1087060 A GB1087060 A GB 1087060A GB 984674 A GB984674 A GB 984674A
Authority
GB
United Kingdom
Prior art keywords
target
disc
tubes
march
deposited
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
GB1087060A
Inventor
Robert Paul Randell
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB1087060A priority Critical patent/GB984674A/en
Publication of GB984674A publication Critical patent/GB984674A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H01J29/46—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/64—Magnetic lenses
    • 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
    • H01J31/34—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 cathode potential, e.g. orthicon
    • H01J31/38—Tubes with photoconductive screen, e.g. vidicon

Abstract

984,674. Television pick-up tubes. ELECTRIC & MUSICAL INDUSTRIES Ltd. March 28, 1961 [March 28, 1960], No. 10870/60. Heading H1D. In an electric discharge tube such as a vidicon or image orthicon - television pick-up tube in which a scanning beam of electrons is focused at the target 4 by a solenoid 11, a magnetic or magnetizable member or disc 7, e.g. of mild steel, is provided near the target to maintain the beam in focus over the target and to overcome the edge effects of the coil 11. A mesh electrode, serving as an ion trap or field mesh, may be arranged in contact with, and on either side of, the disc 7. Where in the vidicon shown, the target 4 comprises a solid layer of antimony trisulphide on a spongy layer of the same substance, the solid layer may be deposited by driving antimony trisulphide, which is deposited on the disc 7 and associated mesh during the deposition of the first spongy layer, on to the anode 5 and from there on to the target. These steps are accomplished by shifting an eddy current heating coil. Specification 984,673 is referred to.
GB1087060A 1961-03-28 1961-03-28 Improvements in or relating to image pick-up tubes Expired GB984674A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1087060A GB984674A (en) 1961-03-28 1961-03-28 Improvements in or relating to image pick-up tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1087060A GB984674A (en) 1961-03-28 1961-03-28 Improvements in or relating to image pick-up tubes

Publications (1)

Publication Number Publication Date
GB984674A true GB984674A (en) 1965-03-03

Family

ID=9975830

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1087060A Expired GB984674A (en) 1961-03-28 1961-03-28 Improvements in or relating to image pick-up tubes

Country Status (1)

Country Link
GB (1) GB984674A (en)

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