DE3564511D1 - Tungsten-iridium impregnated cathode - Google Patents

Tungsten-iridium impregnated cathode

Info

Publication number
DE3564511D1
DE3564511D1 DE8585302311T DE3564511T DE3564511D1 DE 3564511 D1 DE3564511 D1 DE 3564511D1 DE 8585302311 T DE8585302311 T DE 8585302311T DE 3564511 T DE3564511 T DE 3564511T DE 3564511 D1 DE3564511 D1 DE 3564511D1
Authority
DE
Germany
Prior art keywords
iridium
tungsten
impregnated cathode
impregnated
cathode
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.)
Expired
Application number
DE8585302311T
Other languages
German (de)
Inventor
Michael Curzon Green
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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 Varian Associates Inc filed Critical Varian Associates Inc
Application granted granted Critical
Publication of DE3564511D1 publication Critical patent/DE3564511D1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00—Apparatus or processes specially adapted for the manufacture, installation, removal, maintenance of electric discharge tubes, discharge lamps, or parts thereof; Recovery of material from discharge tubes or lamps
    • H01J9/02—Manufacture of electrodes or electrode systems
    • H01J9/04—Manufacture of electrodes or electrode systems of thermionic cathodes
    • 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
    • H01J1/20—Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28—Dispenser-type cathodes, e.g. L-cathode

Landscapes

  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Solid Thermionic Cathode (AREA)
  • Powder Metallurgy (AREA)
DE8585302311T 1984-04-02 1985-04-02 Tungsten-iridium impregnated cathode Expired DE3564511D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59578984A 1984-04-02 1984-04-02

Publications (1)

Publication Number Publication Date
DE3564511D1 true DE3564511D1 (en) 1988-09-22

Family

ID=24384685

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8585302311T Expired DE3564511D1 (en) 1984-04-02 1985-04-02 Tungsten-iridium impregnated cathode

Country Status (3)

Country Link
EP (1) EP0157634B1 (en)
JP (1) JPH0630214B2 (en)
DE (1) DE3564511D1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH678671A5 (en) * 1989-08-22 1991-10-15 Asea Brown Boveri
KR0161381B1 (en) * 1994-12-28 1998-12-01 윤종용 Straight line type cathode structure
KR100195167B1 (en) * 1994-12-29 1999-06-15 손욱 Cathode heated directly and the manufacturing method thereof
JP3596453B2 (en) * 2000-09-28 2004-12-02 ウシオ電機株式会社 Short arc discharge lamp

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4165473A (en) * 1976-06-21 1979-08-21 Varian Associates, Inc. Electron tube with dispenser cathode
DE2909958A1 (en) * 1979-03-14 1980-09-25 Licentia Gmbh Sintered dispenser cathode for electron tube - is made pref. of tungsten powder sintered with tungsten particles coated with iridium
FR2469792A1 (en) * 1979-11-09 1981-05-22 Thomson Csf THERMO-IONIC CATHODE, ITS MANUFACTURING METHOD, AND ELECTRONIC TUBE INCORPORATING SUCH A CATHODE

Also Published As

Publication number Publication date
EP0157634A2 (en) 1985-10-09
JPS60220529A (en) 1985-11-05
JPH0630214B2 (en) 1994-04-20
EP0157634B1 (en) 1988-08-17
EP0157634A3 (en) 1986-01-08

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee