GB675868A - Improvements relating to television or like pick-up tubes - Google Patents

Improvements relating to television or like pick-up tubes

Info

Publication number
GB675868A
GB675868A GB20280/49A GB2028049A GB675868A GB 675868 A GB675868 A GB 675868A GB 20280/49 A GB20280/49 A GB 20280/49A GB 2028049 A GB2028049 A GB 2028049A GB 675868 A GB675868 A GB 675868A
Authority
GB
United Kingdom
Prior art keywords
target
potential
cathode
conductive structure
scanning
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
GB20280/49A
Inventor
Hans Gerhard Lubszynski
Peter Frederick Thom Stillwell
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 GB20280/49A priority Critical patent/GB675868A/en
Priority to US176974A priority patent/US2753483A/en
Publication of GB675868A publication Critical patent/GB675868A/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
    • H01J31/34—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

Landscapes

  • Chemical Or Physical Treatment Of Fibers (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)

Abstract

675,868. Cathode-ray tubes. ELECTRIC & MUSICAL INDUSTRIES, Ltd. July 21,1950 [Aug. 4, 1949], No. 20280/49. Class 39 (i). A television pick-up tube 1 of the kind adapted to operate with cathode potential stabilization and including a target 6, 7, 8, and an electron gun 2, is provided with a stabilizing electrode 9 comprising a conductive structure provided on the side facing the target 6, 7, 8 with an electrically highly resistive coating, e.g. slightly conductive glass. A potential is applied to the conductive structure of the stabilizing electrode so as to prevent elemental areas of the target from being charged to such high potentials that the beam of electrons on scanning the target would be liable to release one or more secondary electrons for each incident beam in the scanning beam, the effect of the resistive coating being to produce to a smooth asymptotic characteristic relating signal output to illumination of the target. A mesh 15 at anode 3 potential may be provided for the purpose.of preventing the passage of positive ions from the gun 2 to the target 6, 7, 8. Specification 657,634 is referred to.
GB20280/49A 1949-08-04 1949-08-04 Improvements relating to television or like pick-up tubes Expired GB675868A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB20280/49A GB675868A (en) 1949-08-04 1949-08-04 Improvements relating to television or like pick-up tubes
US176974A US2753483A (en) 1949-08-04 1950-08-01 Television transmission tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB20280/49A GB675868A (en) 1949-08-04 1949-08-04 Improvements relating to television or like pick-up tubes

Publications (1)

Publication Number Publication Date
GB675868A true GB675868A (en) 1952-07-16

Family

ID=10143371

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20280/49A Expired GB675868A (en) 1949-08-04 1949-08-04 Improvements relating to television or like pick-up tubes

Country Status (2)

Country Link
US (1) US2753483A (en)
GB (1) GB675868A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL229809A (en) * 1954-10-04
US2869025A (en) * 1955-01-28 1959-01-13 Raytheon Mfg Co Storage cameras
NL243461A (en) * 1959-09-17
US3268764A (en) * 1963-01-09 1966-08-23 Westinghouse Electric Corp Radiation sensitive device
US3798495A (en) * 1968-04-17 1974-03-19 Raytheon Co Electrooptical correlator tube using secondary emission modulation

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE684440C (en) * 1936-02-07 1940-04-10 Telefunken Gmbh Cathode ray image transmitter tubes with storage electrode
US2257942A (en) * 1939-04-05 1941-10-07 Farnsworth Television & Radio Image amplifier
US2416720A (en) * 1943-01-30 1947-03-04 Bell Telephone Labor Inc Electrooptical device
US2452619A (en) * 1946-02-07 1948-11-02 Rca Corp Cathode-ray tube
US2520244A (en) * 1946-09-05 1950-08-29 Rca Corp Television pickup tube
US2495042A (en) * 1947-11-12 1950-01-17 Remington Rand Inc Two-sided mosaic and method of manufacturing same
US2544755A (en) * 1948-01-29 1951-03-13 Bell Telephone Labor Inc Electron camera tube
US2547638A (en) * 1948-12-18 1951-04-03 Raytheon Mfg Co Image storage tube

Also Published As

Publication number Publication date
US2753483A (en) 1956-07-03

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