JPS57157442A - Electrostatic deflecting electron gun - Google Patents

Electrostatic deflecting electron gun

Info

Publication number
JPS57157442A
JPS57157442A JP4337781A JP4337781A JPS57157442A JP S57157442 A JPS57157442 A JP S57157442A JP 4337781 A JP4337781 A JP 4337781A JP 4337781 A JP4337781 A JP 4337781A JP S57157442 A JPS57157442 A JP S57157442A
Authority
JP
Japan
Prior art keywords
electrode
deflecting
electron beam
shield
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.)
Pending
Application number
JP4337781A
Other languages
Japanese (ja)
Inventor
Junji Fujita
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 Home Electronics Ltd
NEC Corp
Original Assignee
NEC Home Electronics Ltd
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 Home Electronics Ltd, Nippon Electric Co Ltd filed Critical NEC Home Electronics Ltd
Priority to JP4337781A priority Critical patent/JPS57157442A/en
Publication of JPS57157442A publication Critical patent/JPS57157442A/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
    • H01J29/70—Arrangements for deflecting ray or beam
    • H01J29/72—Arrangements for deflecting ray or beam along one straight line or along two perpendicular straight lines
    • H01J29/74—Deflecting by electric fields only

Abstract

PURPOSE:To prevent drop of deflection sensitivity by arranging an electrode to restrict the diameter of electron beam between the X-Y shield and X deflection electrodes. CONSTITUTION:An Y deflecting electrode 3, X-Y shield electrode 4 and X deflecting electrode 5 are installed in the sequence named in front of the group or grid electrodes 2 to accelerate and focus the electron beam 1 emitted by a cathode and thereby an electrostatic deflecting electron gun is formed. Between said X-Y shield 4 and X deflecting 5 electrodes is interposed an electrode 10 having a beam passing hole, which is so designed as to throat the configuration of the electron beam 1 lenghtwise in the Y direction and widthwise in the X direction, and this shall be kept at 0 volt. Accordingly, the configuration of the electron beam 1 spread is absorbed by the electrode 10, not by the X deflecting electrode, which will eliminate drop of deflecting voltage and thereby prevent the deflection sensitivity from lowering.
JP4337781A 1981-03-24 1981-03-24 Electrostatic deflecting electron gun Pending JPS57157442A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4337781A JPS57157442A (en) 1981-03-24 1981-03-24 Electrostatic deflecting electron gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4337781A JPS57157442A (en) 1981-03-24 1981-03-24 Electrostatic deflecting electron gun

Publications (1)

Publication Number Publication Date
JPS57157442A true JPS57157442A (en) 1982-09-29

Family

ID=12662127

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4337781A Pending JPS57157442A (en) 1981-03-24 1981-03-24 Electrostatic deflecting electron gun

Country Status (1)

Country Link
JP (1) JPS57157442A (en)

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