EP0087826A3 - Thermionic cathode and manufacturing method - Google Patents

Thermionic cathode and manufacturing method Download PDF

Info

Publication number
EP0087826A3
EP0087826A3 EP83200139A EP83200139A EP0087826A3 EP 0087826 A3 EP0087826 A3 EP 0087826A3 EP 83200139 A EP83200139 A EP 83200139A EP 83200139 A EP83200139 A EP 83200139A EP 0087826 A3 EP0087826 A3 EP 0087826A3
Authority
EP
European Patent Office
Prior art keywords
manufacturing method
thermionic cathode
thermionic
cathode
manufacturing
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
EP83200139A
Other versions
EP0087826B1 (en
EP0087826A2 (en
Inventor
Georg Dr. Gartner
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.)
Koninklijke Philips NV
Original Assignee
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
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
Priority to DE19823205746 priority Critical patent/DE3205746A1/en
Priority to DE3205746 priority
Application filed by Philips Intellectual Property and Standards GmbH, Koninklijke Philips NV filed Critical Philips Intellectual Property and Standards GmbH
Publication of EP0087826A2 publication Critical patent/EP0087826A2/en
Publication of EP0087826A3 publication Critical patent/EP0087826A3/en
Application granted granted Critical
Publication of EP0087826B1 publication Critical patent/EP0087826B1/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00Details 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
    • H01J1/02Main electrodes
    • H01J1/13Solid thermionic cathodes
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J1/00Details 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
    • H01J1/02Main electrodes
    • H01J1/13Solid thermionic cathodes
    • H01J1/20Cathodes heated indirectly by an electric current; Cathodes heated by electron or ion bombardment
    • H01J1/28Dispenser-type cathodes, e.g. L-cathode
    • HELECTRICITY
    • H01BASIC ELECTRIC ELEMENTS
    • H01JELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J9/00Apparatus 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
    • H01J9/02Manufacture of electrodes or electrode systems
    • H01J9/04Manufacture of electrodes or electrode systems of thermionic cathodes
EP19830200139 1982-02-18 1983-01-27 Thermionic cathode and manufacturing method Expired EP0087826B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE19823205746 DE3205746A1 (en) 1982-02-18 1982-02-18 Thermionic cathode and method for the production thereof
DE3205746 1982-02-18

Publications (3)

Publication Number Publication Date
EP0087826A2 EP0087826A2 (en) 1983-09-07
EP0087826A3 true EP0087826A3 (en) 1984-06-13
EP0087826B1 EP0087826B1 (en) 1986-09-03

Family

ID=6156031

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19830200139 Expired EP0087826B1 (en) 1982-02-18 1983-01-27 Thermionic cathode and manufacturing method

Country Status (6)

Country Link
US (1) US4524297A (en)
EP (1) EP0087826B1 (en)
JP (1) JPH0447936B2 (en)
CA (1) CA1194089A (en)
DE (1) DE3205746A1 (en)
ES (2) ES519829A0 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3446334A1 (en) * 1984-12-19 1986-06-19 Philips Patentverwaltung Method for producing <111> preferential tungsten
JPH0760641B2 (en) * 1985-02-06 1995-06-28 新日本無線株式会社 Magnetron cathode
CA1272504A (en) * 1986-11-18 1990-08-07 Franz Prein Surface for electric discharge
DE3723271A1 (en) * 1987-07-14 1989-01-26 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Cathode for a high pressure discharge lamp
DE69432174T2 (en) * 1993-11-24 2003-12-11 Tdk Corp Cold cathode electrode source element and method for producing the same
RU2194328C2 (en) * 1998-05-19 2002-12-10 ООО "Высокие технологии" Cold-emission film cathode and its production process
US6815876B1 (en) * 1999-06-23 2004-11-09 Agere Systems Inc. Cathode with improved work function and method for making the same
EP1298694B1 (en) * 2000-05-11 2010-06-23 Panasonic Corporation Electron emission thin film, plasma display panel comprising it and method of manufacturing them
WO2007033247A2 (en) * 2005-09-14 2007-03-22 Littelfuse, Inc. Gas-filled surge arrester, activating compound, ignition stripes and method therefore
JP5341890B2 (en) * 2007-07-24 2013-11-13 コーニンクレッカ フィリップス エヌ ヴェ Thermionic electron emitter, method of making a thermionic electron emitter, and x-ray source including a thermionic electron emitter
DE102015211235A1 (en) 2015-06-18 2016-12-22 Siemens Healthcare Gmbh Emitter

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2339392A (en) * 1942-10-06 1944-01-18 Rca Corp Cathode
DE1439890A1 (en) * 1963-06-03 1969-04-17 Varian Associates Thermionic emitter and process for its preparation
FR2301914A1 (en) * 1975-02-21 1976-09-17 Philips Nv Cathode reserve
US4019081A (en) * 1974-10-25 1977-04-19 Bbc Brown Boveri & Company Limited Reaction cathode

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1150153A (en) * 1953-08-01 1958-01-08 France Etat Thermoémissives cathodes for electron tubes rhenium support
US2878409A (en) * 1957-04-29 1959-03-17 Philips Corp Dispenser-type cathode and method of making
GB1137124A (en) * 1964-12-23 1968-12-18 Nat Res Dev Thermionic electron emitter
SU439028A1 (en) * 1972-08-08 1974-08-05 Е. И. Давыдова, А. Д. Карпенко , В. А. Шишкин Method of making autoelectronic cathodes
SU510760A1 (en) * 1974-09-09 1976-04-15 Организация П/Я Х-5263 Cathode
CH579824A5 (en) * 1974-10-25 1976-09-15 Bbc Brown Boveri & Cie

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2339392A (en) * 1942-10-06 1944-01-18 Rca Corp Cathode
DE1439890A1 (en) * 1963-06-03 1969-04-17 Varian Associates Thermionic emitter and process for its preparation
US4019081A (en) * 1974-10-25 1977-04-19 Bbc Brown Boveri & Company Limited Reaction cathode
FR2301914A1 (en) * 1975-02-21 1976-09-17 Philips Nv Cathode reserve

Also Published As

Publication number Publication date
US4524297A (en) 1985-06-18
JPH0447936B2 (en) 1992-08-05
EP0087826B1 (en) 1986-09-03
CA1194089A1 (en)
ES8401674A1 (en) 1983-12-01
DE3205746A1 (en) 1983-08-25
ES8403243A1 (en) 1984-03-01
ES519829D0 (en)
CA1194089A (en) 1985-09-24
ES519829A0 (en) 1983-12-01
JPS58155619A (en) 1983-09-16
ES522416D0 (en)
EP0087826A2 (en) 1983-09-07
ES522416A0 (en) 1984-03-01

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