GB879569A - Improvements in or relating to electron discharge devices and to circuit arrangements embodying such devices - Google Patents

Improvements in or relating to electron discharge devices and to circuit arrangements embodying such devices

Info

Publication number
GB879569A
GB879569A GB4225/57A GB422557A GB879569A GB 879569 A GB879569 A GB 879569A GB 4225/57 A GB4225/57 A GB 4225/57A GB 422557 A GB422557 A GB 422557A GB 879569 A GB879569 A GB 879569A
Authority
GB
United Kingdom
Prior art keywords
layer
target
sheet
devices
electrode
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
GB4225/57A
Inventor
James Alec Lodge
Reginald Sidney Webley
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 GB4225/57A priority Critical patent/GB879569A/en
Priority to US712859A priority patent/US2960617A/en
Priority to DEE15322A priority patent/DE1162001B/en
Priority to FR1200189D priority patent/FR1200189A/en
Publication of GB879569A publication Critical patent/GB879569A/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
    • H01J29/02—Electrodes; Screens; Mounting, supporting, spacing or insulating thereof
    • H01J29/10—Screens on or from which an image or pattern is formed, picked up, converted or stored
    • H01J29/36—Photoelectric screens; Charge-storage screens
    • H01J29/39—Charge-storage screens
    • H01J29/44—Charge-storage screens exhibiting internal electric effects caused by particle radiation, e.g. bombardment-induced conductivity
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S313/00—Electric lamp and discharge devices
    • Y10S313/07—Bombardment induced conductivity

Landscapes

  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)
  • Vessels, Lead-In Wires, Accessory Apparatuses For Cathode-Ray Tubes (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

879,569. Television pick-up tubes. ELECTRIC & MUSICAL INDUSTRIES Ltd. Jan. 27, 1958 [Feb. 7, 1957], No. 4225/57. Class 39(1). An electron discharge device comprises a target which includes a spongy layer of B.I.C. material, means for bombarding this layer with high velocity electrons whereby the layer acquires charges dependent on the intensity of the incident electrons, and means to project low velocity electrons on to the layer to neutralise these charges. In one embodiment a television pick-up tube has a target comprising a conducting grid 2 on which is disposed a continuous conducting sheet 3 which supports a spongy layer 4 of red antimony trisulphide 2-3Á thick. This layer may be formed by evaporation in a gaseous atmosphere at low pressure, for example in xenon at 0.3 mm. Hg. At one end of the envelope 1 is a photoelectric cathode 5 in contact with a transparent electrode 6. Photoelectrons are accelerated towards the target by electrode 7, focused by coil 8 and pass through grid 2 and sheet 3 on to layer 4 producing areas whose conductivity corresponding to the original optical image. Sheet 3 is maintained at a positive potential with respect to the cathode so that positive charges appear on the surface of layer 4 facing the electron gun 9, 10, 11. The beam from this gun is accelerated by anode 12, decelerated by electrode 13 and scans layer 4 by means of scanning coils 14. The scanning takes place in the presence of a longitudinal magnetic field from coil 15 so that the beam always impinges on the target at right angles. The low velocity scanning beam thus discharges layer 4 and produces picture signals across resistance 16. The target may include one or more layers of solid B.I.C. material about 0.1Á thick in addition to the spongy layer, and need not be of the same substance. Other suitable materials are arsenic trisulphide, silicon monoxide, silicon dioxide, magnesium fluoride, calcium fluoride and zinc sulphide. Specification 668,727 is referred to.
GB4225/57A 1957-02-07 1957-02-07 Improvements in or relating to electron discharge devices and to circuit arrangements embodying such devices Expired GB879569A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
GB4225/57A GB879569A (en) 1957-02-07 1957-02-07 Improvements in or relating to electron discharge devices and to circuit arrangements embodying such devices
US712859A US2960617A (en) 1957-02-07 1958-02-03 Electron discharge devices and to circuit arrangements embodying such devices
DEE15322A DE1162001B (en) 1957-02-07 1958-02-06 Electron discharge device, in particular television pickup tubes
FR1200189D FR1200189A (en) 1957-02-07 1958-02-06 Improvements to the internal structure of electron tubes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4225/57A GB879569A (en) 1957-02-07 1957-02-07 Improvements in or relating to electron discharge devices and to circuit arrangements embodying such devices

Publications (1)

Publication Number Publication Date
GB879569A true GB879569A (en) 1961-10-11

Family

ID=9773097

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4225/57A Expired GB879569A (en) 1957-02-07 1957-02-07 Improvements in or relating to electron discharge devices and to circuit arrangements embodying such devices

Country Status (4)

Country Link
US (1) US2960617A (en)
DE (1) DE1162001B (en)
FR (1) FR1200189A (en)
GB (1) GB879569A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1639034B1 (en) * 1966-06-10 1970-07-09 Westinghouse Electric Corp Electronic storage tube
US3534207A (en) * 1966-06-24 1970-10-13 Thomson Houston Comp Francaise Secondary emission conductivity target comprising plural laminations of different porous materials
US3546514A (en) * 1966-05-05 1970-12-08 Thomson Houston Comp Francaise Secondary-emission conductivity target comprising highly porous storage layer and less porous intermediate layer as base for metal film
US3657596A (en) * 1965-05-20 1972-04-18 Westinghouse Electric Corp Electron image device having target comprising porous region adjacent conductive layer and outer, denser region

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3280357A (en) * 1962-03-01 1966-10-18 Rca Corp Light sensitive device
FR1327117A (en) * 1962-03-30 1963-05-17 Csf New field emission cold cathode triode
US3213316A (en) * 1962-12-03 1965-10-19 Westinghouse Electric Corp Tube with highly porous target
US3218504A (en) * 1962-12-03 1965-11-16 Westinghouse Electric Corp Storage device utilizing e.b.i.c.
US3293484A (en) * 1964-03-20 1966-12-20 Tokyo Shibaura Electric Co Pickup storage tube
US4731560A (en) * 1970-08-06 1988-03-15 Owens-Illinois Television Products, Inc. Multiple gaseous discharge display/memory panel having improved operating life
US4794308A (en) * 1970-08-06 1988-12-27 Owens-Illinois Television Products Inc. Multiple gaseous discharge display/memory panel having improved operating life
US3852607A (en) * 1973-09-21 1974-12-03 Owens Illinois Inc Multiple gaseous discharge display/memory panel having thin film dielectric charge storage member

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2544755A (en) * 1948-01-29 1951-03-13 Bell Telephone Labor Inc Electron camera tube
US2683832A (en) * 1948-04-15 1954-07-13 Pye Ltd Image pickup electron tube
BE490037A (en) * 1948-07-07
US2740837A (en) * 1950-03-30 1956-04-03 Bell Telephone Labor Inc Semiconductor signal translating devices
US2645721A (en) * 1952-02-16 1953-07-14 Gen Electric Image intensification apparatus
US2776371A (en) * 1952-07-18 1957-01-01 Bell Telephone Labor Inc Quantizing system employing cathode ray tube

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3657596A (en) * 1965-05-20 1972-04-18 Westinghouse Electric Corp Electron image device having target comprising porous region adjacent conductive layer and outer, denser region
US3546514A (en) * 1966-05-05 1970-12-08 Thomson Houston Comp Francaise Secondary-emission conductivity target comprising highly porous storage layer and less porous intermediate layer as base for metal film
DE1639034B1 (en) * 1966-06-10 1970-07-09 Westinghouse Electric Corp Electronic storage tube
US3534207A (en) * 1966-06-24 1970-10-13 Thomson Houston Comp Francaise Secondary emission conductivity target comprising plural laminations of different porous materials

Also Published As

Publication number Publication date
FR1200189A (en) 1959-12-18
DE1162001B (en) 1964-01-30
US2960617A (en) 1960-11-15

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