GB774300A - Multi-beam television receiver - Google Patents

Multi-beam television receiver

Info

Publication number
GB774300A
GB774300A GB15079/54A GB1507954A GB774300A GB 774300 A GB774300 A GB 774300A GB 15079/54 A GB15079/54 A GB 15079/54A GB 1507954 A GB1507954 A GB 1507954A GB 774300 A GB774300 A GB 774300A
Authority
GB
United Kingdom
Prior art keywords
wire
scanning
spots
focusing
potential
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
GB15079/54A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Standard Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB774300A publication Critical patent/GB774300A/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
    • H01J29/48—Electron guns
    • H01J29/50—Electron guns two or more guns in a single vacuum space, e.g. for plural-ray tube
    • 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
    • H01J29/84—Traps for removing or diverting unwanted particles, e.g. negative ions, fringing electrons; Arrangements for velocity or mass selection
    • 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
    • H01J29/84—Traps for removing or diverting unwanted particles, e.g. negative ions, fringing electrons; Arrangements for velocity or mass selection
    • H01J29/845—Traps for removing or diverting unwanted particles, e.g. negative ions, fringing electrons; Arrangements for velocity or mass selection by means of magnetic systems

Landscapes

  • Electron Sources, Ion Sources (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)
  • Dot-Matrix Printers And Others (AREA)

Abstract

774,300. Cathode-ray tubes. STANDARD TELEPHONES & CABLES, Ltd. May 21, 1954 [May 30; 1953], No. 15079/54. Class 39(1). A television receiver comprises means for producing a single elec tron beam and in order from the cathode means-preferably : a wire electrode 4-for splitting the beam into two parts means for focusing the beam portions to form focal spots which are closely adjacent or overlapping in a direction perpendicular to the direction of line near the focal spots lying within a region bounded by the distance between two adjacent lines of deflection, and means for scanning the fluorescent screen with the spots in phase. As shown a tungsten wire electrode 4 whose potential is less than the potential of the final anode 1 is disposed on the gun side of the final anode diaphragm 3. The desired potential of the wire 4 can be attained by connecting it to the final anode through resistance 5, or the secondary emissive properties of the wire can be utilized in which case the wire is still connected by a resistance or gas discharge gap to the anode. After the beam has been split, the split parts are focused by electromagnetic or electrostatic means and then deflected together by known scanning means. The wire 4 is parallel to the scanning lines if electrostatic focusing is used or is at 60 degrees to the scan lines if magnetic focusing is used. Prior art devices using elliptical scanning spots or spot wobble are referred to.
GB15079/54A 1953-05-30 1954-05-21 Multi-beam television receiver Expired GB774300A (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE774300X 1953-05-30
DE2921212X 1955-04-30
DEL22089A DE1027804B (en) 1953-05-30 1955-05-26 Electron gun with ion trap

Publications (1)

Publication Number Publication Date
GB774300A true GB774300A (en) 1957-05-08

Family

ID=32397399

Family Applications (2)

Application Number Title Priority Date Filing Date
GB15079/54A Expired GB774300A (en) 1953-05-30 1954-05-21 Multi-beam television receiver
GB16254/56A Expired GB806293A (en) 1953-05-30 1956-05-25 Cathode ray tube with ion trap

Family Applications After (1)

Application Number Title Priority Date Filing Date
GB16254/56A Expired GB806293A (en) 1953-05-30 1956-05-25 Cathode ray tube with ion trap

Country Status (6)

Country Link
US (2) US2921212A (en)
BE (1) BE548096A (en)
DE (2) DE1027804B (en)
FR (3) FR1101439A (en)
GB (2) GB774300A (en)
NL (1) NL207373A (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2915662A (en) * 1956-08-24 1959-12-01 Nat Video Corp Centering arrangement and method for beams of cathode ray tubes
US4075533A (en) * 1976-09-07 1978-02-21 Tektronix, Inc. Electron beam forming structure utilizing an ion trap
US4521900A (en) * 1982-10-14 1985-06-04 Imatron Associates Electron beam control assembly and method for a scanning electron beam computed tomography scanner
US4625150A (en) * 1984-04-16 1986-11-25 Imatron, Inc. Electron beam control assembly for a scanning electron beam computed tomography scanner
FR2613897B1 (en) * 1987-04-10 1990-11-09 Realisations Nucleaires Et DEVICE FOR SUPPRESSING MICRO PROJECTIONS IN A VACUUM ARC ION SOURCE
US8334506B2 (en) 2007-12-10 2012-12-18 1St Detect Corporation End cap voltage control of ion traps
US7973277B2 (en) * 2008-05-27 2011-07-05 1St Detect Corporation Driving a mass spectrometer ion trap or mass filter

Family Cites Families (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2733365A (en) * 1956-01-31 hoagland
DE689388C (en) * 1934-07-30 1940-03-19 Lorenz Akt Ges C Arrangement for deflecting the cathode ray in Braun tubes
GB480948A (en) * 1936-07-25 1938-02-25 Frederick Hermes Nicoll Improvements in or relating to cathode ray tubes
BE424327A (en) * 1936-10-30
GB539422A (en) * 1940-02-06 1941-09-10 Standard Telephones Cables Ltd Improvements in or relating to arrangments for producing concentrated beams of electrons, particularly for electron discharge apparatus of the velocity modulation type
AT164772B (en) * 1945-09-15 1949-12-10 Philips Nv Electric discharge tube with a bundled stream of electrons
US2555850A (en) * 1948-01-28 1951-06-05 Nicholas D Glyptis Ion trap
GB690332A (en) * 1949-07-13 1953-04-15 Mullard Radio Valve Co Ltd Improvements in and relating to cathode-ray tubes comprising ion trap arrangements
NL153273B (en) * 1950-05-02 Bosch Gmbh Robert DRAIN DEVICE FOR THE CONTINUOUS DRAINAGE OF A SUGAR MASS FROM A VACUUM BOILER FOR VAPORING A VISCOUS MASS OF SUGAR.
US2642546A (en) * 1950-10-10 1953-06-16 Louis J Patla Ion trap
DE869668C (en) * 1951-02-24 1953-03-05 Loewe Opta Ag Cathode ray tube with ion trap
US2719243A (en) * 1951-07-03 1955-09-27 Du Mont Allen B Lab Inc Electrostatic electron lens
US2681421A (en) * 1952-03-04 1954-06-15 Gen Electric Magnetic focusing structure for electron beams
NL87649C (en) * 1953-03-18

Also Published As

Publication number Publication date
US2859364A (en) 1958-11-04
DE1074163B (en) 1960-01-28
FR1101439A (en) 1955-10-06
DE1027804B (en) 1958-04-10
GB806293A (en) 1958-12-23
FR69827E (en) 1958-12-30
FR69711E (en) 1958-11-19
BE548096A (en)
NL207373A (en)
US2921212A (en) 1960-01-12

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