JPS57113544A - Structure of electronic gun for color picture tube - Google Patents

Structure of electronic gun for color picture tube

Info

Publication number
JPS57113544A
JPS57113544A JP29981A JP29981A JPS57113544A JP S57113544 A JPS57113544 A JP S57113544A JP 29981 A JP29981 A JP 29981A JP 29981 A JP29981 A JP 29981A JP S57113544 A JPS57113544 A JP S57113544A
Authority
JP
Japan
Prior art keywords
electrode
face
cup
main lens
type
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.)
Pending
Application number
JP29981A
Other languages
Japanese (ja)
Inventor
Yoshio Sekiya
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
Priority to JP29981A priority Critical patent/JPS57113544A/en
Publication of JPS57113544A publication Critical patent/JPS57113544A/en
Pending 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
    • H01J29/51—Arrangements for controlling convergence of a plurality of beams by means of electric field only

Abstract

PURPOSE:To make it easy to fix self convergence volume by convexly forming, toward an opposed electrode, a vertex face of a cup-type electrode which is located at the cathode side out of opposed electrodes forming main lens. CONSTITUTION:A vertex face 7a of a cup-type G3 electrode 7 at the cathode side forming main lens is convexly formed, while a vertex face 8a of another cup-type G4 electrode 8 is formed in a flat manner. Electronic beam passing orifices 9a-9c and 10a-10c are formed in these two vertex face 7a and 8a respectively. In this way, optimum convergence property can be obtained for each color image receiving tube of which distance from main lens to an image receiving tube face is different, while eccentricity volume among electronic beam passing orifices is kept constant.
JP29981A 1981-01-07 1981-01-07 Structure of electronic gun for color picture tube Pending JPS57113544A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29981A JPS57113544A (en) 1981-01-07 1981-01-07 Structure of electronic gun for color picture tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29981A JPS57113544A (en) 1981-01-07 1981-01-07 Structure of electronic gun for color picture tube

Publications (1)

Publication Number Publication Date
JPS57113544A true JPS57113544A (en) 1982-07-15

Family

ID=11470016

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29981A Pending JPS57113544A (en) 1981-01-07 1981-01-07 Structure of electronic gun for color picture tube

Country Status (1)

Country Link
JP (1) JPS57113544A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581560A (en) * 1981-12-16 1986-04-08 Hitachi, Ltd. Electron gun for color picture tube

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4581560A (en) * 1981-12-16 1986-04-08 Hitachi, Ltd. Electron gun for color picture tube

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