JPS56134457A - Electron-gun structured body - Google Patents

Electron-gun structured body

Info

Publication number
JPS56134457A
JPS56134457A JP3621080A JP3621080A JPS56134457A JP S56134457 A JPS56134457 A JP S56134457A JP 3621080 A JP3621080 A JP 3621080A JP 3621080 A JP3621080 A JP 3621080A JP S56134457 A JPS56134457 A JP S56134457A
Authority
JP
Japan
Prior art keywords
electrode
electrodes
pole part
electron
structured body
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
JP3621080A
Other languages
Japanese (ja)
Other versions
JPH0138347B2 (en
Inventor
Eizaburo Hamano
Shinpei Koshigoe
Eiji Kanbara
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP3621080A priority Critical patent/JPS56134457A/en
Publication of JPS56134457A publication Critical patent/JPS56134457A/en
Publication of JPH0138347B2 publication Critical patent/JPH0138347B2/ja
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
    • H01J29/56—Arrangements for controlling cross-section of ray or beam; Arrangements for correcting aberration of beam, e.g. due to lenses

Abstract

PURPOSE:To eliminate the coma of an electron-gun structured body by providing elliptical beam-passing holes having major axes in the direction of a horizontal axis, both in an electrode of the three-pole part except the cathode and in an electrode giving a diverging action. CONSTITUTION:Electrodes 53, 55, 57 and 59 that constitute a focusing part are placed at the back of a three-pole part consisting of a cathode 47, electrodes 49 and 51. A low voltage of 500V is applied to the electrodes 51 and 55, a medium voltage of 7kV is applied to the electrodes 53 and 57, and a high voltage of 25kV is applied to the electrode 59. Elliptical beam-passing holes 71 and 67 which have major axes 72 and 69 in the direction of the horizontal axis, X, are provided in the electrode 57 side of the electrode 59 and in the electrode 49 of the three-pole part, respectively. Consequently, an asymmetric diverging action of the vicinity of the hole 71 enables the correction of the horizontal coma around the picture which is caused by barrel- like vertical magnetic field. Besides, an asymmetric focusing action of the vicinity of the hole 67 can compensate the tendency of the central part of the picture of becoming long.
JP3621080A 1980-03-24 1980-03-24 Electron-gun structured body Granted JPS56134457A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3621080A JPS56134457A (en) 1980-03-24 1980-03-24 Electron-gun structured body

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3621080A JPS56134457A (en) 1980-03-24 1980-03-24 Electron-gun structured body

Publications (2)

Publication Number Publication Date
JPS56134457A true JPS56134457A (en) 1981-10-21
JPH0138347B2 JPH0138347B2 (en) 1989-08-14

Family

ID=12463381

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3621080A Granted JPS56134457A (en) 1980-03-24 1980-03-24 Electron-gun structured body

Country Status (1)

Country Link
JP (1) JPS56134457A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61188838A (en) * 1985-02-15 1986-08-22 Sony Corp Electron gun
JPS61188840A (en) * 1985-02-15 1986-08-22 Sony Corp Electron gun

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413249A (en) * 1977-07-01 1979-01-31 Hitachi Ltd Cathode ray tube

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5413249A (en) * 1977-07-01 1979-01-31 Hitachi Ltd Cathode ray tube

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61188838A (en) * 1985-02-15 1986-08-22 Sony Corp Electron gun
JPS61188840A (en) * 1985-02-15 1986-08-22 Sony Corp Electron gun

Also Published As

Publication number Publication date
JPH0138347B2 (en) 1989-08-14

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