JPS5697949A - Electron gun - Google Patents

Electron gun

Info

Publication number
JPS5697949A
JPS5697949A JP53680A JP53680A JPS5697949A JP S5697949 A JPS5697949 A JP S5697949A JP 53680 A JP53680 A JP 53680A JP 53680 A JP53680 A JP 53680A JP S5697949 A JPS5697949 A JP S5697949A
Authority
JP
Japan
Prior art keywords
hole
sections
cylindrical thru
thru
cylindrical
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
JP53680A
Other languages
Japanese (ja)
Inventor
Shigeo Takenaka
Shinpei Koshigoe
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP53680A priority Critical patent/JPS5697949A/en
Publication of JPS5697949A publication Critical patent/JPS5697949A/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
    • H01J29/58—Arrangements for focusing or reflecting ray or beam
    • H01J29/62—Electrostatic lenses
    • H01J29/622—Electrostatic lenses producing fields exhibiting symmetry of revolution
    • H01J29/624—Electrostatic lenses producing fields exhibiting symmetry of revolution co-operating with or closely associated to an electron gun

Abstract

PURPOSE:To obtain a large electrostatic lens and improve the assembly accuracy of an electron gun, by drilling the cylindrical thru-hole on an electrode forming a principal lens, as well as on a member with a specified length in the axial direction of an electron beam, and extending the inner wall section of the cylindrical thru-hole to the specified length. CONSTITUTION:The three partitioning sections 55 and 56 of every cylindrical thru- hole sections 52, 53, and 54 on a horizontal axis X2-X2' which contains the central axes 52Z, 53Z, and 54Z of the cylindrical thru-hole sections 52, 53, and 54 in parallel to the axial direction of each electron beam of an electrode element 442 is formed into narrow rectangles consisting of a pair of long sides in parallel to the central axes 52Z, 53Z, and 54Z and their vertical short sides and the inner wall section including their partitioning sections 55 and 56 is extended into the same length as that 60 of the electrode element. This can increase the diameter of the respective cylindrical thru-hole sections 52, 53, and 54 and form a large electrostatic lens.
JP53680A 1980-01-09 1980-01-09 Electron gun Pending JPS5697949A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53680A JPS5697949A (en) 1980-01-09 1980-01-09 Electron gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53680A JPS5697949A (en) 1980-01-09 1980-01-09 Electron gun

Publications (1)

Publication Number Publication Date
JPS5697949A true JPS5697949A (en) 1981-08-07

Family

ID=11476472

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53680A Pending JPS5697949A (en) 1980-01-09 1980-01-09 Electron gun

Country Status (1)

Country Link
JP (1) JPS5697949A (en)

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