JPS5691337A - Electron gun - Google Patents

Electron gun

Info

Publication number
JPS5691337A
JPS5691337A JP16853779A JP16853779A JPS5691337A JP S5691337 A JPS5691337 A JP S5691337A JP 16853779 A JP16853779 A JP 16853779A JP 16853779 A JP16853779 A JP 16853779A JP S5691337 A JPS5691337 A JP S5691337A
Authority
JP
Japan
Prior art keywords
holder
negative electrode
electrode
wehnelt
wehnelt electrode
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
JP16853779A
Other languages
Japanese (ja)
Inventor
Isao Sasaki
Tadahiro Takigawa
Kakuki Motoyama
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 JP16853779A priority Critical patent/JPS5691337A/en
Publication of JPS5691337A publication Critical patent/JPS5691337A/en
Pending legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J3/00—Details of electron-optical or ion-optical arrangements or of ion traps common to two or more basic types of discharge tubes or lamps
    • H01J3/02—Electron guns
    • H01J3/028—Replacing parts of the gun; Relative adjustment

Landscapes

  • Solid Thermionic Cathode (AREA)
  • Electron Sources, Ion Sources (AREA)

Abstract

PURPOSE:To make it possible to easily make adjustment to recover any shift of the center of a negative electrode in relation to a wehnelt electrode, by means of a negative electrode mounting base set up in such a way as capable of moving freely in a plane perpendicular to the axis of a holder on which the wehnelt electrode is fixed through screw mechanism. CONSTITUTION:Wehnelt electrode 3 engaging with its holder 7 via a screw mechanism around the external circumference of its end, is provided, around its side surface near the bottom, with a dial 11 sectioning the circumference at an equal interval. In one side area of the holder 7, is fixed an index panel 12 made of a transparent plate etc. and provided with a datum line in its center, while confronting the dial 11. On the other hand, base 4 holding the negative electrode and incorporated into the internal space of holder 7 is arranged in such a way as being freely shifted on the plane perpendicular to the holder axis, while touching the step formed on the inside wall of holder 7. Thus, position adjustment can be made with extremely high accuracy and also quickly between the negative electrode and wehnelt electrode 3.
JP16853779A 1979-12-25 1979-12-25 Electron gun Pending JPS5691337A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16853779A JPS5691337A (en) 1979-12-25 1979-12-25 Electron gun

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16853779A JPS5691337A (en) 1979-12-25 1979-12-25 Electron gun

Publications (1)

Publication Number Publication Date
JPS5691337A true JPS5691337A (en) 1981-07-24

Family

ID=15869849

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16853779A Pending JPS5691337A (en) 1979-12-25 1979-12-25 Electron gun

Country Status (1)

Country Link
JP (1) JPS5691337A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS479889U (en) * 1971-03-05 1972-10-05
JPS5433512A (en) * 1977-08-22 1979-03-12 Tokyo Shibaura Electric Co Method of making ceramic sintered body

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS479889U (en) * 1971-03-05 1972-10-05
JPS5433512A (en) * 1977-08-22 1979-03-12 Tokyo Shibaura Electric Co Method of making ceramic sintered body

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