GB976174A - Electron discharge device - Google Patents

Electron discharge device

Info

Publication number
GB976174A
GB976174A GB9997/63A GB999763A GB976174A GB 976174 A GB976174 A GB 976174A GB 9997/63 A GB9997/63 A GB 9997/63A GB 999763 A GB999763 A GB 999763A GB 976174 A GB976174 A GB 976174A
Authority
GB
United Kingdom
Prior art keywords
grid
aperture
potential
cathode
spacings
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
GB9997/63A
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.)
CBS Corp
Original Assignee
Westinghouse Electric Corp
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 Westinghouse Electric Corp filed Critical Westinghouse Electric Corp
Publication of GB976174A publication Critical patent/GB976174A/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
    • H01J29/488—Schematic arrangements of the electrodes for beam forming; Place and form of the elecrodes
    • 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
    • H01J29/52—Arrangements for controlling intensity of ray or beam, e.g. for modulation
    • 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
    • H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

976,174. Cathode-ray tubes. WESTING- HOUSE ELECTRIC CORPORATION. March 13, 1963 [April 13, 1962], No. 9997/63. Heading H1D. In a cathode-ray tube of the type employing electrostatic focusing and arranged for cathode modulation, the electron gun comprises an indirectly heated cathode within a control grid 37 maintained at earth potential, a second grid 50 having a shield member 57, both at low potential, a third grid 60 connected to a fifth grid 80 at high potential and a fourth grid 75 maintained at an intermediate potential. The grids are shaped as shown, and the dimensions of the apertures in the grids and of their spacings are chosen to give a penetration factor of 5 for the second grid and have relationships such that the spacings 51, 52 do not exceed 0.17 aperture d 1 ,the ratio of aperture d 2 to d 1 is between 0.9 and 0.7. The function of the shield member 57 is to separate the triode section 53, 40 and a conical section 54 of grid 50 from the effects of the potential of grid 60 and to achieve this aperture d 3 is equal in size to aperture d 1 ,spacing S 4 is not greater than 0.6 d 3 and spacing S 5 is equal to or greater than 3 d 3 .An example, giving grid dimensions and potentials is set out in the Specification.
GB9997/63A 1962-04-13 1963-03-13 Electron discharge device Expired GB976174A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US187257A US3213311A (en) 1962-04-13 1962-04-13 Electron discharge device

Publications (1)

Publication Number Publication Date
GB976174A true GB976174A (en) 1964-11-25

Family

ID=22688237

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9997/63A Expired GB976174A (en) 1962-04-13 1963-03-13 Electron discharge device

Country Status (4)

Country Link
US (1) US3213311A (en)
BE (1) BE630810A (en)
DE (1) DE1279213B (en)
GB (1) GB976174A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2170876A1 (en) * 1971-02-05 1973-09-21 Hitachi Ltd
FR2461352A1 (en) * 1979-07-12 1981-01-30 Philips Nv DEVICE PROVIDED WITH A TELEVISION CAMERA TUBE AND TELEVISION CAMERA TUBE FOR SUCH A DEVICE
US4318027A (en) 1978-04-12 1982-03-02 Rca Corporation High potential, low magnification electron gun

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3295001A (en) * 1963-06-04 1966-12-27 Sylvania Electric Prod Cathode ray tube gun having a second grid with an effective thickness
JPS4811664B1 (en) * 1965-04-26 1973-04-14
US3396297A (en) * 1966-05-31 1968-08-06 Sylvania Electric Prod Multiple electron gun structure for cathode ray tube
US3873879A (en) * 1972-01-14 1975-03-25 Rca Corp In-line electron gun
US4318026A (en) * 1980-04-30 1982-03-02 Rca Corporation Method of making a grid for a cathode-ray tube electron gun
JP2003022761A (en) * 2001-07-06 2003-01-24 Matsushita Electric Ind Co Ltd Electron gun, cathode-ray tube using it, and manufacturing method of electron gun

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1071238B (en) * 1959-12-17
US2935636A (en) * 1955-10-31 1960-05-03 Rca Corp Electron gun structure
US3008064A (en) * 1957-10-28 1961-11-07 Rauland Corp Cathode-ray tube
US3027479A (en) * 1958-06-27 1962-03-27 Rca Corp Electron guns

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2170876A1 (en) * 1971-02-05 1973-09-21 Hitachi Ltd
US4318027A (en) 1978-04-12 1982-03-02 Rca Corporation High potential, low magnification electron gun
FR2461352A1 (en) * 1979-07-12 1981-01-30 Philips Nv DEVICE PROVIDED WITH A TELEVISION CAMERA TUBE AND TELEVISION CAMERA TUBE FOR SUCH A DEVICE

Also Published As

Publication number Publication date
DE1279213B (en) 1968-10-03
BE630810A (en)
US3213311A (en) 1965-10-19

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