FR2423057A1 - ELECTRON CANNON FOR CATHODIC RAY TUBES, ESPECIALLY FOR COLOR IMAGE TUBES - Google Patents

ELECTRON CANNON FOR CATHODIC RAY TUBES, ESPECIALLY FOR COLOR IMAGE TUBES

Info

Publication number
FR2423057A1
FR2423057A1 FR7908890A FR7908890A FR2423057A1 FR 2423057 A1 FR2423057 A1 FR 2423057A1 FR 7908890 A FR7908890 A FR 7908890A FR 7908890 A FR7908890 A FR 7908890A FR 2423057 A1 FR2423057 A1 FR 2423057A1
Authority
FR
France
Prior art keywords
tubes
color image
lens electrode
cathodic ray
electron cannon
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.)
Granted
Application number
FR7908890A
Other languages
French (fr)
Other versions
FR2423057B1 (en
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.)
RCA Corp
Original Assignee
RCA 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 RCA Corp filed Critical RCA Corp
Publication of FR2423057A1 publication Critical patent/FR2423057A1/en
Application granted granted Critical
Publication of FR2423057B1 publication Critical patent/FR2423057B1/fr
Granted 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
    • H01J29/503—Three or more guns, the axes of which lay in a common plane
    • 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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/62—Electrostatic lenses
    • H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
    • H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun

Abstract

Canon à électrons qui comprend, espacées les unes des autres dans l'ordre énuméré ci-après, : une cathode ; une grille de commande plate et perforée G1; une grille écran plate et perforée G2; une première électrode lentille tubulaire G3 et une seconde électrode lentille G4, ce canon étant caractérisé en ce que la pile écran G2 38 possède une épaisseur e de l'ordre de 0,4 à 1,0 fois le diamètre f de l'ouverture 56 de cette grille écran G2 et en ce que la première électrode lentille G3 40 présente une longueur i qui est de l'ordre de 2,5 à 5;0 fois le diamètre j de la première électrode lentille G3.An electron gun which comprises, spaced apart in the order listed below,: a cathode; a flat and perforated control grid G1; a flat and perforated screen grille G2; a first tubular lens electrode G3 and a second lens electrode G4, this gun being characterized in that the screen cell G2 38 has a thickness e of the order of 0.4 to 1.0 times the diameter f of the opening 56 of this screen grid G2 and in that the first lens electrode G3 40 has a length i which is of the order of 2.5 to 5.0 times the diameter j of the first lens electrode G3.

FR7908890A 1978-04-12 1979-04-09 ELECTRON CANNON FOR CATHODIC RAY TUBES, ESPECIALLY FOR COLOR IMAGE TUBES Granted FR2423057A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US89558878A 1978-04-12 1978-04-12

Publications (2)

Publication Number Publication Date
FR2423057A1 true FR2423057A1 (en) 1979-11-09
FR2423057B1 FR2423057B1 (en) 1984-03-02

Family

ID=25404723

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7908890A Granted FR2423057A1 (en) 1978-04-12 1979-04-09 ELECTRON CANNON FOR CATHODIC RAY TUBES, ESPECIALLY FOR COLOR IMAGE TUBES

Country Status (18)

Country Link
JP (1) JPS54145472A (en)
AU (1) AU4515779A (en)
BE (1) BE875443A (en)
BR (1) BR7902199A (en)
CA (1) CA1138519A (en)
CZ (1) CZ278259B6 (en)
DD (1) DD143125A5 (en)
DE (1) DE2914838C2 (en)
ES (1) ES479316A1 (en)
FI (1) FI791127A (en)
FR (1) FR2423057A1 (en)
GB (1) GB2020092B (en)
HK (1) HK59887A (en)
IT (1) IT1112465B (en)
MX (1) MX4332E (en)
NL (1) NL189323C (en)
PL (1) PL126827B1 (en)
SU (1) SU1722254A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2535522A1 (en) * 1982-10-29 1984-05-04 Philips Nv CATHODE RAY TUBE

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4234814A (en) * 1978-09-25 1980-11-18 Rca Corporation Electron gun with astigmatic flare-reducing beam forming region
US4498028A (en) * 1981-09-28 1985-02-05 Zenith Electronics Corporation Ultra-short LoBi electron gun for very short cathode ray tubes
US4529910A (en) * 1982-03-31 1985-07-16 Zenith Electronics Corporation High-performance electron gun
JPS59148242A (en) * 1983-02-14 1984-08-24 Matsushita Electronics Corp Picture tube device
EP0237005A3 (en) * 1986-03-11 1988-10-12 Matsushita Electronics Corporation Cathode ray tube for color display
FR2724048B1 (en) * 1994-08-26 1997-01-10 Thomson Tubes & Displays COPLANAR ELECTRONIC CANNON WITH IMPROVED BEAM FORMATION ZONE
JP2000243218A (en) 1999-02-17 2000-09-08 Nec Corp Electron emitting device and its drive method therefor

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1156511B (en) * 1957-10-28 1963-10-31 Rauland Corp Beam generation system for a cathode-modulated cathode ray tube
US3090882A (en) * 1960-04-13 1963-05-21 Rca Corp Electron gun
US3295001A (en) * 1963-06-04 1966-12-27 Sylvania Electric Prod Cathode ray tube gun having a second grid with an effective thickness
US3374379A (en) * 1964-03-02 1968-03-19 Nippon Columbia Low second grid voltage electron gun
BE793992A (en) * 1972-01-14 1973-05-02 Rca Corp CATHODIC RAY TUBE
JPS5522906B2 (en) * 1974-05-20 1980-06-19
US3995194A (en) * 1974-08-02 1976-11-30 Zenith Radio Corporation Electron gun having an extended field electrostatic focus lens

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2535522A1 (en) * 1982-10-29 1984-05-04 Philips Nv CATHODE RAY TUBE

Also Published As

Publication number Publication date
NL189323B (en) 1992-10-01
NL189323C (en) 1993-03-01
DD143125A5 (en) 1980-07-30
PL214828A1 (en) 1980-05-05
HK59887A (en) 1987-08-21
PL126827B1 (en) 1983-09-30
JPH0419660B2 (en) 1992-03-31
JPS54145472A (en) 1979-11-13
CZ278259B6 (en) 1993-11-17
AU4515779A (en) 1979-10-18
BR7902199A (en) 1979-12-04
DE2914838A1 (en) 1979-10-18
ES479316A1 (en) 1979-06-16
FR2423057B1 (en) 1984-03-02
MX4332E (en) 1982-03-25
CZ246779A3 (en) 1993-06-16
CA1138519A (en) 1982-12-28
IT7921663A0 (en) 1979-04-06
BE875443A (en) 1979-07-31
IT1112465B (en) 1986-01-13
GB2020092A (en) 1979-11-07
DE2914838C2 (en) 1986-11-06
NL7902868A (en) 1979-10-16
FI791127A (en) 1979-10-13
GB2020092B (en) 1983-01-06
SU1722254A3 (en) 1992-03-23

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Legal Events

Date Code Title Description
TP Transmission of property