GB1377091A - Electron gun structure - Google Patents

Electron gun structure

Info

Publication number
GB1377091A
GB1377091A GB377472A GB377472A GB1377091A GB 1377091 A GB1377091 A GB 1377091A GB 377472 A GB377472 A GB 377472A GB 377472 A GB377472 A GB 377472A GB 1377091 A GB1377091 A GB 1377091A
Authority
GB
United Kingdom
Prior art keywords
electrodes
lens
unipotential
electron gun
gun structure
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
GB377472A
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of GB1377091A publication Critical patent/GB1377091A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/029—Schematic arrangements for beam forming
    • 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

Landscapes

  • Cold Cathode And The Manufacture (AREA)
  • Electrodes For Cathode-Ray Tubes (AREA)

Abstract

1377091 Electron lenses HITACHI Ltd 26 Jan 1972 [5 Feb 1971] 3774/72 Heading H1D The main focusing lens in a cathode-ray tube is formed by the combination of a unipotential lens and a bipotential lens. In Fig. 2 the first three electrodes P1-P3 form the unipotential lens L u and the third and fourth electrodes P3 and P4 form the bipotential lens L B . Electrodes P1 and P3 are connected together to a high potential source E a whilst electrodes P2 and P4 may be connected to a common medium potential source E b or may be connected to separate medium potential sources (Fig. 3, not shown). In modifications (Figs. 4 and 5, not shown) the first two electrodes form the lens L B and electrodes P2-P4 form the unipotential lens L u .
GB377472A 1971-02-05 1972-01-26 Electron gun structure Expired GB1377091A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP46004232A JPS5743972B1 (en) 1971-02-05 1971-02-05

Publications (1)

Publication Number Publication Date
GB1377091A true GB1377091A (en) 1974-12-11

Family

ID=11578807

Family Applications (1)

Application Number Title Priority Date Filing Date
GB377472A Expired GB1377091A (en) 1971-02-05 1972-01-26 Electron gun structure

Country Status (5)

Country Link
US (1) US3852637A (en)
JP (1) JPS5743972B1 (en)
DE (1) DE2205162C2 (en)
FR (1) FR2170876B1 (en)
GB (1) GB1377091A (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS545374A (en) * 1977-06-15 1979-01-16 Hitachi Ltd Electronic gun
ES475304A1 (en) * 1977-11-22 1979-03-16 Tokyo Shibaura Electric Co Electron gun for in-line colour crt
JPS5480666A (en) * 1977-12-09 1979-06-27 Mitsubishi Electric Corp Electron gun
GB2015195A (en) * 1978-02-15 1979-09-05 Tektronix Inc Cathode Ray Tube Having Low Voltage Focus and Dynamic Correction
JPS55136442A (en) * 1979-04-10 1980-10-24 Toshiba Corp Electron gun
JPS563948A (en) * 1979-06-22 1981-01-16 Hitachi Ltd Electrostatic focusing type pickup tube
US4558253A (en) * 1983-04-18 1985-12-10 Rca Corporation Color picture tube having an inline electron gun with asymmetric focusing lens
US4528476A (en) * 1983-10-24 1985-07-09 Rca Corporation Cathode-ray tube having electron gun with three focus lenses
EP0515352A1 (en) * 1991-05-24 1992-11-25 IMS Ionen Mikrofabrikations Systeme Gesellschaft m.b.H. Ion source

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US25127A (en) * 1859-08-16 Improvement in mole-plows
GB493882A (en) * 1937-04-17 1938-10-17 Harry Raymond Lubcke Cathode ray tube
DE764012C (en) * 1936-11-15 1954-10-04 Aeg Electron-optical imaging system to achieve a small electron spot
BE428489A (en) * 1937-06-08
FR1172405A (en) * 1956-02-20 1959-02-10 Thomson Houston Comp Francaise Improvements to electronic guns
US3076121A (en) * 1959-03-20 1963-01-29 Sylvania Electric Prod Cathode ray tube system
US3049641A (en) * 1959-05-08 1962-08-14 Gen Electric High transconductance cathode ray tube
BE630810A (en) * 1962-04-13
US3295001A (en) * 1963-06-04 1966-12-27 Sylvania Electric Prod Cathode ray tube gun having a second grid with an effective thickness
FR1477372A (en) * 1965-04-26 1967-04-14 Sony Corp Electron guns to generate and concentrate an electron beam
US3437868A (en) * 1965-10-11 1969-04-08 Sony Corp Electron gun device
US3501668A (en) * 1968-05-10 1970-03-17 Zenith Radio Corp Low focus voltage electron gun for cathode-ray tubes
US3651359A (en) * 1969-04-23 1972-03-21 Sony Corp Abberation correction of plurality of beams in color cathode ray tube

Also Published As

Publication number Publication date
JPS5743972B1 (en) 1982-09-18
DE2205162C2 (en) 1983-08-18
DE2205162A1 (en) 1972-08-10
FR2170876A1 (en) 1973-09-21
FR2170876B1 (en) 1975-10-24
US3852637A (en) 1974-12-03

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
435 Patent endorsed 'licences of right' on the date specified (sect. 35/1949)
PE20 Patent expired after termination of 20 years