JPS55151753A - Color crt - Google Patents

Color crt

Info

Publication number
JPS55151753A
JPS55151753A JP6012979A JP6012979A JPS55151753A JP S55151753 A JPS55151753 A JP S55151753A JP 6012979 A JP6012979 A JP 6012979A JP 6012979 A JP6012979 A JP 6012979A JP S55151753 A JPS55151753 A JP S55151753A
Authority
JP
Japan
Prior art keywords
focusing lens
electrode
rectangular shape
long oval
electrodes
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
JP6012979A
Other languages
Japanese (ja)
Other versions
JPS6333259B2 (en
Inventor
Masao Natsuhara
Yoichi Hosoi
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electronics 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 Matsushita Electronics Corp filed Critical Matsushita Electronics Corp
Priority to JP6012979A priority Critical patent/JPS55151753A/en
Publication of JPS55151753A publication Critical patent/JPS55151753A/en
Publication of JPS6333259B2 publication Critical patent/JPS6333259B2/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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/62—Electrostatic lenses
    • H01J29/626—Electrostatic lenses producing fields exhibiting periodic axial symmetry, e.g. multipolar fields
    • H01J29/628—Electrostatic lenses producing fields exhibiting periodic axial symmetry, e.g. multipolar fields co-operating with or closely associated to an electron gun

Abstract

PURPOSE:To eliminate spherical aberration and nonspot aberration by a method in which a main focusing lens is formed into a vertically long oval or rectangular shape and also additional focusing lens provided between a prefocusing lens and the main focusing lens are formed into a horizontally long oval or rectangular shape. CONSTITUTION:Additional focusing lens-forming electrodes 12' and 14 are provided between main focusing lens-formeing electrode 12 and 13 and a prefocusing lens-forming electrode. The electrode 12' is molded integrally with the electrode 12, and the sections of the electrodes 12 and 13 are formed into a vertically long oval or rectangular shape. Also, the sections of the electrodes 12' and 14 are formed into a horizontally long oval or rectangular shape.
JP6012979A 1979-05-15 1979-05-15 Color crt Granted JPS55151753A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6012979A JPS55151753A (en) 1979-05-15 1979-05-15 Color crt

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6012979A JPS55151753A (en) 1979-05-15 1979-05-15 Color crt

Publications (2)

Publication Number Publication Date
JPS55151753A true JPS55151753A (en) 1980-11-26
JPS6333259B2 JPS6333259B2 (en) 1988-07-05

Family

ID=13133206

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6012979A Granted JPS55151753A (en) 1979-05-15 1979-05-15 Color crt

Country Status (1)

Country Link
JP (1) JPS55151753A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS598246A (en) * 1982-07-05 1984-01-17 Toshiba Corp Electron gun

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5941268A (en) * 1982-06-01 1984-03-07 エム・ア−・エヌ−ロ−ラント・ドルツクマシ−ネン・アクチエンゲゼルシヤフト Device for varnishing device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5941268A (en) * 1982-06-01 1984-03-07 エム・ア−・エヌ−ロ−ラント・ドルツクマシ−ネン・アクチエンゲゼルシヤフト Device for varnishing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS598246A (en) * 1982-07-05 1984-01-17 Toshiba Corp Electron gun
JPH0429178B2 (en) * 1982-07-05 1992-05-18

Also Published As

Publication number Publication date
JPS6333259B2 (en) 1988-07-05

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