JPS57128441A - In-line-type electron gun electrode structure - Google Patents

In-line-type electron gun electrode structure

Info

Publication number
JPS57128441A
JPS57128441A JP14275181A JP14275181A JPS57128441A JP S57128441 A JPS57128441 A JP S57128441A JP 14275181 A JP14275181 A JP 14275181A JP 14275181 A JP14275181 A JP 14275181A JP S57128441 A JPS57128441 A JP S57128441A
Authority
JP
Japan
Prior art keywords
beam transmitting
electrodes
electron lens
transmitting holes
partition walls
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
JP14275181A
Other languages
Japanese (ja)
Other versions
JPS604542B2 (en
Inventor
Kazuaki Naiki
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP56142751A priority Critical patent/JPS604542B2/en
Publication of JPS57128441A publication Critical patent/JPS57128441A/en
Publication of JPS604542B2 publication Critical patent/JPS604542B2/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
    • H01J29/50—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

Abstract

PURPOSE:To reduce the astigmatism of a main electron lens by providing the beam transmitting holes of opposed electrodes, which form the main electron lens, with conductive partition walls protruding from the inner surface of the electrodes in the axial direction. CONSTITUTION:Opposed electrodes 4 and 5 form the main electron lens of a color image receiving tube electron gun, and are provided with side beam transmitting holes 4G2, 4B2, and 5G, 5B and central beam transmitting holes 4R2 and 5R respectively. Cylindrical partition walls 18, which have the same axis as the beam transmitting hole, protrude from the peripheries of the side beam transmitting holes toward the inner side of the electrodes 4 and 5 in the axial direction, and have a length above one third of the diameter of the beam transmitting hole, are provided between the beam transmitting holes. Since equipotential lines 19 form an almost symmetrical pattern on both sides of the space between the electrodes 4 and 5, and the lines 19 become symmetrical about axial lines 9, 10 and the like owing to the electrostatic shield effect of the partition walls 18, which remove any influence of adjacent holes, a homogeneous electron lens with a small astigmatism can be obtained. Consequently, a beam spot formed on a fluorescent surface can be made closer to a true circle.
JP56142751A 1981-09-10 1981-09-10 In-line electron gun electrode structure Expired JPS604542B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP56142751A JPS604542B2 (en) 1981-09-10 1981-09-10 In-line electron gun electrode structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56142751A JPS604542B2 (en) 1981-09-10 1981-09-10 In-line electron gun electrode structure

Publications (2)

Publication Number Publication Date
JPS57128441A true JPS57128441A (en) 1982-08-10
JPS604542B2 JPS604542B2 (en) 1985-02-05

Family

ID=15322730

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56142751A Expired JPS604542B2 (en) 1981-09-10 1981-09-10 In-line electron gun electrode structure

Country Status (1)

Country Link
JP (1) JPS604542B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6153559A (en) * 1984-08-24 1986-03-17 Fujitsu Ltd Detection of glass cracking

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5018164U (en) * 1973-06-15 1975-02-27

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5018164U (en) * 1973-06-15 1975-02-27

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6153559A (en) * 1984-08-24 1986-03-17 Fujitsu Ltd Detection of glass cracking

Also Published As

Publication number Publication date
JPS604542B2 (en) 1985-02-05

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