JPS5652843A - Color braun tube - Google Patents

Color braun tube

Info

Publication number
JPS5652843A
JPS5652843A JP12812779A JP12812779A JPS5652843A JP S5652843 A JPS5652843 A JP S5652843A JP 12812779 A JP12812779 A JP 12812779A JP 12812779 A JP12812779 A JP 12812779A JP S5652843 A JPS5652843 A JP S5652843A
Authority
JP
Japan
Prior art keywords
window
field control
shield body
influence
eddy current
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
JP12812779A
Other languages
Japanese (ja)
Other versions
JPH0145700B2 (en
Inventor
Takeo Fujimura
Takeo Kawaguchi
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.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric 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 Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP12812779A priority Critical patent/JPS5652843A/en
Publication of JPS5652843A publication Critical patent/JPS5652843A/en
Publication of JPH0145700B2 publication Critical patent/JPH0145700B2/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
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/701—Systems for correcting deviation or convergence of a plurality of beams by means of magnetic fields at least
    • H01J29/707—Arrangements intimately associated with parts of the gun and co-operating with external magnetic excitation devices

Abstract

PURPOSE:To suppress the influence of local eddy current on a shield body, by forming a window, notch, etc. on the shield body which is in the proximity of a field control element. CONSTITUTION:Field control elements 12a, 12b are arranged in a front cup of electron gun 11 to currect the top aberration. A window 14 is provided at the position near to the field control element 12a of a shield body 11a which is a portion of tubular cup 11. The window 14 is such that it doesn't influence the shield function of the shield body. A notch, punch-out, etc. as well as window may be formed. Consequently the eddy current due to the magnetization near central portion will occur around the window, thereby the concentration of flux due to the eddy current to the field control element 12b is prevented thus the time lag of deflection flux which influence on the central beam is prevented.
JP12812779A 1979-10-04 1979-10-04 Color braun tube Granted JPS5652843A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12812779A JPS5652843A (en) 1979-10-04 1979-10-04 Color braun tube

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12812779A JPS5652843A (en) 1979-10-04 1979-10-04 Color braun tube

Publications (2)

Publication Number Publication Date
JPS5652843A true JPS5652843A (en) 1981-05-12
JPH0145700B2 JPH0145700B2 (en) 1989-10-04

Family

ID=14977054

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12812779A Granted JPS5652843A (en) 1979-10-04 1979-10-04 Color braun tube

Country Status (1)

Country Link
JP (1) JPS5652843A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6086736A (en) * 1983-10-17 1985-05-16 Nec Corp In-line type electron gun structure
JPS6129047A (en) * 1984-07-20 1986-02-08 Nec Corp Inline electron gun structure
JPS6129046A (en) * 1984-07-20 1986-02-08 Nec Corp Inline electron gun structure
US4659961A (en) * 1983-10-17 1987-04-21 Nec Corporation Cup member of an in-line electron gun capable of reducing a coma aberration

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6086736A (en) * 1983-10-17 1985-05-16 Nec Corp In-line type electron gun structure
US4659961A (en) * 1983-10-17 1987-04-21 Nec Corporation Cup member of an in-line electron gun capable of reducing a coma aberration
JPH0367298B2 (en) * 1983-10-17 1991-10-22 Nippon Electric Co
JPS6129047A (en) * 1984-07-20 1986-02-08 Nec Corp Inline electron gun structure
JPS6129046A (en) * 1984-07-20 1986-02-08 Nec Corp Inline electron gun structure

Also Published As

Publication number Publication date
JPH0145700B2 (en) 1989-10-04

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