JPS5671253A - Electronic source - Google Patents

Electronic source

Info

Publication number
JPS5671253A
JPS5671253A JP14730679A JP14730679A JPS5671253A JP S5671253 A JPS5671253 A JP S5671253A JP 14730679 A JP14730679 A JP 14730679A JP 14730679 A JP14730679 A JP 14730679A JP S5671253 A JPS5671253 A JP S5671253A
Authority
JP
Japan
Prior art keywords
electrode
perforated
perforated hole
electrode plate
hole line
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
JP14730679A
Other languages
Japanese (ja)
Other versions
JPS6337937B2 (en
Inventor
Masanori Watanabe
Kinzo Nonomura
Yoshinobu Takesako
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP14730679A priority Critical patent/JPS5671253A/en
Publication of JPS5671253A publication Critical patent/JPS5671253A/en
Publication of JPS6337937B2 publication Critical patent/JPS6337937B2/ja
Granted legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00—Details of electrodes, of magnetic control means, of screens, or of the mounting or spacing thereof, common to two or more basic types of discharge tubes or lamps
    • H01J1/02—Main electrodes
    • H01J1/13—Solid thermionic cathodes
    • H01J1/15—Cathodes heated directly by an electric current

Landscapes

  • Electrodes For Cathode-Ray Tubes (AREA)
  • Cathode-Ray Tubes And Fluorescent Screens For Display (AREA)

Abstract

PURPOSE:To take out electronic beams which have high current density in focusing condition in such a way that the first and second latticed electrode plates which have perforated hole lines opposite to linear heat cathodes are arranged along the heat cathodes, and the second electrode perforated holes are arranged smaller than the first electrode holes and coaxially. CONSTITUTION:A linear heat cathod 3 which is coated with a heat electrode emitting material 4 is strung over the surface of a metal wire 3 with high fusing point, such as W wire, or the like, holding a settled interval with a rear electrode 1 to limit the directivity and emitting zone of electronic beams. Besides, the first latticed electrode plate 5 which is provided with perforated hole line 6 and the second latticed electrode plate which is provided with perforated hole line 8 are arranged along the linear cathode 3, the perforated hole line 8 made on the second electrode plate 7 is fixed with a settled interval so that the perforated holes on the first electrode plate 5 come to be coaxially, and the hole diameter of the perforated hole line 6. Thus, the electronic source can be taken out by exceedingly simple electrode constitution in the condition of focusing electrode beams that have high current density.
JP14730679A 1979-11-13 1979-11-13 Electronic source Granted JPS5671253A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14730679A JPS5671253A (en) 1979-11-13 1979-11-13 Electronic source

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14730679A JPS5671253A (en) 1979-11-13 1979-11-13 Electronic source

Publications (2)

Publication Number Publication Date
JPS5671253A true JPS5671253A (en) 1981-06-13
JPS6337937B2 JPS6337937B2 (en) 1988-07-27

Family

ID=15427207

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14730679A Granted JPS5671253A (en) 1979-11-13 1979-11-13 Electronic source

Country Status (1)

Country Link
JP (1) JPS5671253A (en)

Also Published As

Publication number Publication date
JPS6337937B2 (en) 1988-07-27

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