EP0184876A3 - High-pressure gas-discharge lamp having a tungsten sheet electrode - Google Patents

High-pressure gas-discharge lamp having a tungsten sheet electrode Download PDF

Info

Publication number
EP0184876A3
EP0184876A3 EP85201901A EP85201901A EP0184876A3 EP 0184876 A3 EP0184876 A3 EP 0184876A3 EP 85201901 A EP85201901 A EP 85201901A EP 85201901 A EP85201901 A EP 85201901A EP 0184876 A3 EP0184876 A3 EP 0184876A3
Authority
EP
European Patent Office
Prior art keywords
pressure gas
discharge lamp
tungsten sheet
sheet electrode
discharge
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.)
Withdrawn
Application number
EP85201901A
Other languages
German (de)
French (fr)
Other versions
EP0184876A2 (en
Inventor
Ernst Dr. Fischer
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.)
Philips Intellectual Property and Standards GmbH
Koninklijke Philips NV
Original Assignee
Philips Patentverwaltung GmbH
Philips Gloeilampenfabrieken NV
Koninklijke Philips Electronics 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
Application filed by Philips Patentverwaltung GmbH, Philips Gloeilampenfabrieken NV, Koninklijke Philips Electronics NV filed Critical Philips Patentverwaltung GmbH
Publication of EP0184876A2 publication Critical patent/EP0184876A2/en
Publication of EP0184876A3 publication Critical patent/EP0184876A3/en
Withdrawn legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/04—Electrodes; Screens; Shields
    • H01J61/06—Main electrodes
    • H01J61/073—Main electrodes for high-pressure discharge lamps
    • H01J61/0732—Main electrodes for high-pressure discharge lamps characterised by the construction of the electrode

Landscapes

  • Discharge Lamp (AREA)
  • Vessels And Coating Films For Discharge Lamps (AREA)
  • Discharge Lamps And Accessories Thereof (AREA)

Abstract

Bei einer Hochdruck-Gasentladungslampe mit Elektroden, von denen mindestens eine einen aus Wolframblech bestehen­ den Elektrodenkopf (2) aufweist, an dem im Betrieb der Lampe der Entladungsbogen angreift, ist der Elektrodenkopf als flache oder gebogene Platte ausgebildet, deren der Entladung zuge­ wandte längliche vordere Stirnfläche (3) als alleinige Angriffs­ fläche für den Entladungsbogen dient. With a high pressure gas discharge lamp with electrodes, at least one of which is made of tungsten sheet has the electrode head (2) on the lamp during operation attacks the discharge arc, the electrode head is as flat or curved plate formed, the zuge the discharge turned elongated front face (3) as the sole attack area for the discharge arc.

EP85201901A 1984-12-08 1985-11-19 High-pressure gas-discharge lamp having a tungsten sheet electrode Withdrawn EP0184876A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3444922 1984-12-08
DE19843444922 DE3444922A1 (en) 1984-12-08 1984-12-08 HIGH PRESSURE GAS DISCHARGE LAMP WITH AN ELECTRODE CONSTRUCTED FROM TUNGSTEN SHEET

Publications (2)

Publication Number Publication Date
EP0184876A2 EP0184876A2 (en) 1986-06-18
EP0184876A3 true EP0184876A3 (en) 1988-10-26

Family

ID=6252324

Family Applications (1)

Application Number Title Priority Date Filing Date
EP85201901A Withdrawn EP0184876A3 (en) 1984-12-08 1985-11-19 High-pressure gas-discharge lamp having a tungsten sheet electrode

Country Status (5)

Country Link
US (1) US4700107A (en)
EP (1) EP0184876A3 (en)
JP (1) JPS61138446A (en)
CA (1) CA1249014A (en)
DE (1) DE3444922A1 (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4229317A1 (en) * 1992-09-02 1994-03-03 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh High pressure discharge lamp
US5420477A (en) * 1993-01-15 1995-05-30 Welch Allyn, Inc. Electrode for metal halide discharge lamp
KR100822490B1 (en) * 2000-02-11 2008-04-16 코닌클리즈케 필립스 일렉트로닉스 엔.브이. Unit comprising a high-pressure discharge lamp and an ignition antenna
EP1143485A3 (en) * 2000-04-03 2001-11-14 Matsushita Electric Industrial Co., Ltd. Discharge lamps, method for producing the same and lamp unit
DE102004028562A1 (en) * 2004-06-15 2006-01-05 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Electrode for a discharge lamp and discharge lamp
JP5040577B2 (en) * 2007-10-16 2012-10-03 ウシオ電機株式会社 Super high pressure discharge lamp

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1723929A (en) * 1926-03-09 1929-08-06 Francotte Regnier Luminous electric discharge tube
GB527901A (en) * 1938-03-22 1940-10-18 Rnc Pavel Meisel Electric discharge tube
GB530405A (en) * 1938-06-22 1940-12-11 Electricitatsgesellschaft Sani Improvements in mercury vapour lamps
DE712691C (en) * 1939-06-15 1941-10-23 Electricitaetsgesellschaft San High-pressure mercury vapor arc lamp with basic gas filling and non-activated glow electrodes heated by the discharge
FR903909A (en) * 1942-08-12 1945-10-22 Licht A G Vereinigte Glu Hlamp High pressure metal vapor lamp
US2508114A (en) * 1947-12-05 1950-05-16 Gen Electric Tantalum electrode for electric discharge devices
GB1594976A (en) * 1978-05-24 1981-08-05 Gen Electric Co Ltd High pressure electric discharge lamps

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2876377A (en) * 1955-09-01 1959-03-03 Westinghouse Electric Corp Ribbon seal and method of fabrication
US3080497A (en) * 1959-12-11 1963-03-05 Gen Electric Bent end incandescent lamp
NL174683C (en) * 1975-09-11 1984-07-16 Philips Nv HIGH PRESSURE GAS DISCHARGE LAMP.
JPS5615545A (en) * 1979-07-19 1981-02-14 Ushio Inc Flash discharge lamp

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1723929A (en) * 1926-03-09 1929-08-06 Francotte Regnier Luminous electric discharge tube
GB527901A (en) * 1938-03-22 1940-10-18 Rnc Pavel Meisel Electric discharge tube
GB530405A (en) * 1938-06-22 1940-12-11 Electricitatsgesellschaft Sani Improvements in mercury vapour lamps
DE712691C (en) * 1939-06-15 1941-10-23 Electricitaetsgesellschaft San High-pressure mercury vapor arc lamp with basic gas filling and non-activated glow electrodes heated by the discharge
FR903909A (en) * 1942-08-12 1945-10-22 Licht A G Vereinigte Glu Hlamp High pressure metal vapor lamp
US2508114A (en) * 1947-12-05 1950-05-16 Gen Electric Tantalum electrode for electric discharge devices
GB1594976A (en) * 1978-05-24 1981-08-05 Gen Electric Co Ltd High pressure electric discharge lamps

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 5, Nr. 66 (E-55)[738], 2. Mai 1981; & JP-A-56 015 545 (USHIO DENKI K.K.) 14-02-1981 *

Also Published As

Publication number Publication date
US4700107A (en) 1987-10-13
DE3444922A1 (en) 1986-06-12
CA1249014A (en) 1989-01-17
JPS61138446A (en) 1986-06-25
EP0184876A2 (en) 1986-06-18

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Inventor name: FISCHER, ERNST, DR.