GB1393447A - Deflection coil system in particular for a camera tube - Google Patents

Deflection coil system in particular for a camera tube

Info

Publication number
GB1393447A
GB1393447A GB2414272A GB2414272A GB1393447A GB 1393447 A GB1393447 A GB 1393447A GB 2414272 A GB2414272 A GB 2414272A GB 2414272 A GB2414272 A GB 2414272A GB 1393447 A GB1393447 A GB 1393447A
Authority
GB
United Kingdom
Prior art keywords
coils
deflection
coil
normals
current source
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
GB2414272A
Inventor
L M Swart
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated 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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1393447A publication Critical patent/GB1393447A/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
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/76—Deflecting by magnetic fields only
    • 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
    • H01J29/465—Arrangements of electrodes and associated parts for generating or controlling the ray or beam, e.g. electron-optical arrangement for simultaneous focalisation and deflection of ray or beam
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J2229/00—Details of cathode ray tubes or electron beam tubes
    • H01J2229/96—Circuit elements other than coils, reactors or the like, associated with the tube
    • H01J2229/964—Circuit elements other than coils, reactors or the like, associated with the tube associated with the deflection system

Landscapes

  • Details Of Television Scanning (AREA)
  • Image-Pickup Tubes, Image-Amplification Tubes, And Storage Tubes (AREA)

Abstract

1393447 Electric beam magnetic deflecting systems PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. 23 May 1972 [26 May 1971] 24142/72 Heading H1D [Also in Divisions H3-H5] A deflection coil system for a camera tube also serves as a focusing coil and comprises two coaxial helical coils 45 and 47, Fig. 4, arranged so that the normals 43 and 44 to the mean planes of the turns of each coil lie at opposite acute angles to the axis. The magnetic field generated by each coil is directed along the respective normal 43 or 44 and the coils may be connected to a deflection current source in anti-phase so that the axial components of the magnetic field cancel whereas the transverse components add, and to a direct current source in phase so that the transverse components cancel whilst the axial components reinforce to provide a focusing field. Preferably there are two pairs of coils, the inner pair for frame deflection and the outer pair for line deflection. The inclination of the normals 43 and 44 should be 3-20 degrees, and the coils should extend between the electron gun and the target.
GB2414272A 1971-05-26 1972-05-23 Deflection coil system in particular for a camera tube Expired GB1393447A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7107285A NL7107285A (en) 1971-05-26 1971-05-26

Publications (1)

Publication Number Publication Date
GB1393447A true GB1393447A (en) 1975-05-07

Family

ID=19813260

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2414272A Expired GB1393447A (en) 1971-05-26 1972-05-23 Deflection coil system in particular for a camera tube

Country Status (12)

Country Link
US (1) US3774070A (en)
JP (1) JPS5428692B1 (en)
AU (1) AU467317B2 (en)
BE (1) BE783893A (en)
CA (1) CA950952A (en)
DE (1) DE2225172C3 (en)
ES (1) ES403135A1 (en)
FR (1) FR2139108B1 (en)
GB (1) GB1393447A (en)
IT (1) IT958950B (en)
NL (1) NL7107285A (en)
SE (1) SE374977B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3896339A (en) * 1973-07-18 1975-07-22 Ivan Ivanovich Efimov Device for focussing and deflection of an electron beam in a cathode-ray apparatus
DE2352119C2 (en) * 1973-10-17 1975-12-18 Siemens Ag, 1000 Berlin Und 8000 Muenchen Electron-optical system with a magnetic focusing and electromagnetic deflection arrangement designed as a unit
DE2811265A1 (en) * 1978-03-15 1979-10-04 Siemens Ag MAGNETIC FOCUSING / DEFLECTION SYSTEM FOR ELECTRON BEAM TUBES, IN PARTICULAR IMAGE TUBES
JPS5835847A (en) * 1981-08-27 1983-03-02 Toshiba Corp Coil assembly for camera tube

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
BE476201A (en) * 1939-06-06
US2684455A (en) * 1952-06-13 1954-07-20 Bendix Aviat Corp Symmetrical magnetic deflection system
US3368095A (en) * 1966-07-11 1968-02-06 Rca Corp Four identical printed coils for horizontal and vertical deflection on flexible dielectric
US3562683A (en) * 1969-04-07 1971-02-09 Us Army Quadrupole focusing of electron beams

Also Published As

Publication number Publication date
JPS5428692B1 (en) 1979-09-18
AU4256872A (en) 1973-11-29
ES403135A1 (en) 1976-01-16
US3774070A (en) 1973-11-20
DE2225172C3 (en) 1978-10-26
CA950952A (en) 1974-07-09
FR2139108A1 (en) 1973-01-05
DE2225172A1 (en) 1972-12-07
FR2139108B1 (en) 1977-12-23
DE2225172B2 (en) 1978-02-23
BE783893A (en) 1972-11-24
AU467317B2 (en) 1975-11-27
NL7107285A (en) 1972-11-28
IT958950B (en) 1973-10-30
SE374977B (en) 1975-03-24

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee