EP1861862B1 - Method for producing an electrode and gas discharge lamp having an electrode of this type - Google Patents
Method for producing an electrode and gas discharge lamp having an electrode of this type Download PDFInfo
- Publication number
- EP1861862B1 EP1861862B1 EP06706032A EP06706032A EP1861862B1 EP 1861862 B1 EP1861862 B1 EP 1861862B1 EP 06706032 A EP06706032 A EP 06706032A EP 06706032 A EP06706032 A EP 06706032A EP 1861862 B1 EP1861862 B1 EP 1861862B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- lamp
- discharge
- producing
- discharge lamp
- 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.)
- Ceased
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 8
- 230000005855 radiation Effects 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 6
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 6
- 229910052750 molybdenum Inorganic materials 0.000 description 6
- 239000011733 molybdenum Substances 0.000 description 6
- 239000011888 foil Substances 0.000 description 5
- 238000001953 recrystallisation Methods 0.000 description 5
- 239000011521 glass Substances 0.000 description 4
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 4
- 239000010937 tungsten Substances 0.000 description 4
- 230000002277 temperature effect Effects 0.000 description 3
- 229910052721 tungsten Inorganic materials 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 238000000227 grinding Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910001182 Mo alloy Inorganic materials 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910001080 W alloy Inorganic materials 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000000156 glass melt Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910001507 metal halide Inorganic materials 0.000 description 1
- 150000005309 metal halides Chemical class 0.000 description 1
- 238000004663 powder metallurgy Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000005245 sintering Methods 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
- 229910052724 xenon Inorganic materials 0.000 description 1
- FHNFHKCVQCLJFQ-UHFFFAOYSA-N xenon atom Chemical compound [Xe] FHNFHKCVQCLJFQ-UHFFFAOYSA-N 0.000 description 1
Images
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
- H01J9/24—Manufacture or joining of vessels, leading-in conductors or bases
- H01J9/245—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps
- H01J9/247—Manufacture or joining of vessels, leading-in conductors or bases specially adapted for gas discharge tubes or lamps specially adapted for gas-discharge lamps
-
- 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
-
- 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
-
- 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
Definitions
- the invention relates to a method for producing an electrode according to the preamble of patent claim 1.
- Such electrodes provided with an electrode tip are used, for example, in discharge lamps.
- the process for producing electrodes consists essentially of powder metallurgy production of an electrode blank, a sintering process and the subsequent mechanical deformation of the blank to the desired electrode diameter.
- the forming of the blanks takes place for example by rolling on a multi-roll or by hammering on rotary hammers.
- the diameter of the blank is reduced with simultaneous elongation of the material.
- the billet diameter is further reduced from about 4 mm by a drawing process.
- the applicant known to form the electrode tip by radial forming, for example by means of profiled hammers baking.
- This solution enables a grain boundary structure following the contour of the electrode tip, since the electrode tip is not produced by mechanical or chemical removal.
- a disadvantage of such electrodes is that the final microstructure and purity of the electrode tip is achieved only during operation of the lamp due to a recrystallization of the structure caused by the effect of the temperature of the gas discharge. That is, at the beginning of the operating life of such electrodes have a long-crystalline, fibrous microstructure, which lead to poor ignition properties and an unfavorable arch approach.
- the EP 1 148 534 A1 discloses a rod-shaped electrode for a discharge lamp whose discharge-side end is covered with a coil. This helix is fused to the hemispherical end of the electrode.
- the invention has for its object to provide a method for producing an electrode or power supply and a lamp with such an electrode or power supply, in which compared to conventional solutions improved performance is possible.
- the microstructure of at least one section of the electrode is at least partially converted by means of high-energy radiation, preferably laser radiation. Due to the temperature effect of the high-energy radiation on this electrode section, the fibrous, long-crystalline structural regions combine to form compact, dense units-in other words-a defined recrystallization of the microstructure of the electrode segment takes place. This recrystallization causes a coarsely crystalline structure in the region of this elec trodenabitess. As a result, this electrode section has a microstructure and purity substantially corresponding to the operating state of the lamp.
- the abovementioned electrode section preferably comprises the discharge-side end of the electrode.
- the aforementioned microstructure of the discharge-side end of the electrode remains stable during operation of the lamp and it ensures good ignition properties and a good bow approach. This allows the electrode tip according to the invention opposite the prior art according to the EP 0 858 098 B1 already at the beginning of the life of the lamp an optimal ignition behavior and a good arc formation. Furthermore, a high purity of the electrode is achieved due to the influence of temperature.
- the crystal structure is consistently converted.
- a defined, coarse-grained microstructure surface of the electrode section is present.
- the structure of at least a portion of the power supply by means of high-energy radiation, preferably laser radiation, at least partially converted for example, by means of the high-energy radiation, a surface portion of the power supply is treated, for example, to evaporate adhering to the surface impurities or to smooth the surface of the power supply or to convert the crystal structure of the power supply to its surface, thereby improving the so-called glazing behavior of the power supply, that is, to reduce the adhesion of the power supply to the surrounding glass of the lamp vessel and thus the risk of cracking in the lamp vessel due to different thermal expansion coefficients of glass and power supply material.
- the power supply is preferably formed as a wire of molybdenum, tungsten or an alloy of molybdenum or tungsten.
- a discharge lamp produced according to the invention has at least one electrode and at least one power supply, wherein the structure of at least a portion of the electrode or the power supply by means of high-energy radiation, preferably laser radiation, at least partially converted.
- an electrode section has a structure substantially corresponding to the operating state of the discharge lamp.
- this electrode section has a coarsely crystalline structure.
- this electrode section has a purity substantially corresponding to the operating state of the lamp.
- blackening in the discharge vessel is reduced to a minimum and the service life of the discharge lamp is substantially extended.
- this electrode section is produced by means of high-energy radiation, preferably laser radiation.
- the aforementioned electrode section is the discharge-side end of the electrode.
- the invention is preferably applied to rod-shaped tungsten electrodes, in particular for high-pressure discharge lamps.
- the lamp shown is a high-pressure discharge lamp 1, as used for example in vehicle headlights or projectors use.
- This has a discharge vessel 2 made of quartz glass with an interior 4 and two diametrically arranged, sealed end sections 6, 8, which are formed as Glaseinschmelzonne 10, 12 and each having a power supply 14 which embedded with gas-tight in the Glaseinschmelzonne 10, 12 of the discharge lamp 1 , Be as rectangular molybdenum foils 16, 18 are welded.
- In the interior 4 protrude two diametrically arranged, such as pin-shaped electrodes 20, 22 made of doped with ThO 2 tungsten, each with one of Molybdenum foils 16, 18 are welded and between which forms a gas discharge during lamp operation.
- an ionizable filling which consists of high purity xenon gas and a plurality of metal halides.
- the electrodes 20, 22 each have a first end portion 26 embedded in the glass melt 10 or 12 as the electrode shaft 24. At a second end portion 28, the electrodes 20, 22 are provided with an electrode tip 30.
- the structure of the electrode tips 30 is at least partially converted by means of high-energy radiation.
- the high-energy radiation is introduced into the electrode tips 30 by means of a laser. Due to the temperature effect of the laser radiation on the electrode tip 30, the fibrous, long-crystalline structural regions combine to form compact, dense units-in other words-a defined recrystallization of the microstructure of the electrode tip 30 takes place.
- the recrystallization causes a relatively coarse-crystalline structure in the region of the electrode tip 30. As a result, this has a structure and purity substantially corresponding to the operating state of the discharge lamp 1.
- This microstructure of the electrode tip 30 remains stable during operation of the lamp 1 and has good ignition properties and an advantageous bow approach.
- the electrode tip 30 according to the invention allows over the prior art according to the EP 0 858 098 B1 Optimal ignition behavior and good arc formation already at the beginning of lamp life. Furthermore, due to the temperature effect of the laser radiation, a high purity of the electrodes 20, 22 is achieved.
- FIG. 2 which shows an enlarged view of the electrode 20 FIG. 1 shows
- the cylindrical electrode shaft 24 tapers frustoconically to the electrode tip 30, the conical surface 32 discharges discharge side in an approximately circular end face 34.
- the electrode tip 30 is produced by means of the laser radiation during the structural transformation and has the in FIG. 1 explained microstructure.
- An electrode 20, 22 produced according to the invention is not limited to the described shaping of the electrode tip 30 by laser radiation, but the electrode tip 30 can be formed by any known from the general state of the art forming technique, in particular by grinding, etching, hammering or the like in any geometric shapes be.
- the discharge-side end 30 of the electrodes 20, 22 may also be thickened instead of pointed.
- the structural transformation of the electrode section 30 according to the invention can take place before or after the welding of the electrode 20, 22 with the molybdenum foil 16, 18.
- the structure of a portion of the electrodes by means of high-energy radiation, preferably laser radiation at least partially converted.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Discharge Lamp (AREA)
- Vessels And Coating Films For Discharge Lamps (AREA)
Description
Die Erfindung betrifft ein Verfahren zur Herstellung einer Elektrode gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a method for producing an electrode according to the preamble of
Derartige mit einer Elektrodenspitze versehene Elektroden finden beispielsweise in Entladungslampen Verwendung. Das Verfahren zur Elektrodenherstellung besteht im Wesentlichen aus der pulvermetallurgischen Herstellung eines Elektrodenrohlings, einem Sinterprozess und dem anschließenden mechanischen Umformen des Rohlings auf den gewünschten Elektrodendurchmesser. Das Umformen der Rohlinge erfolgt beispielsweise durch Walzen auf einer Mehrfachwalze oder durch Hämmern auf Rundhämmermaschinen. Hierbei wird der Durchmesser des Rohlings unter gleichzeitiger Längung des Materials reduziert. Für Elektroden mit kleinerem Durchmesser wird der Rohlingdurchmesser ab etwa 4 mm durch einen Ziehprozess weiter verringert. Es hat sich gezeigt, dass das Ziehen auf dünne Durchmesser eine längsgerichtete Faserstruktur und dadurch eine extreme Störung der Gefügestruktur innerhalb der Elektrode verursacht, da die Korngrenzenstrukturen parallel zur Längsachse des Rohlings verlaufen und zwar nicht nur im Bereich des Elektrodenschaftes sondern auch im Bereich der Elektrodenspitze. Nach dem Erzeugen der Elektrodenspitze durch aus dem allgemeinen Stand der Technik bekannte Formgebungsverfahren, wie beispielsweise durch Rundschleifen oder chemisches Abtragen mündet die Korngrenzenstruktur an der schrägen Fläche der Elektrodenspitze.Such electrodes provided with an electrode tip are used, for example, in discharge lamps. The process for producing electrodes consists essentially of powder metallurgy production of an electrode blank, a sintering process and the subsequent mechanical deformation of the blank to the desired electrode diameter. The forming of the blanks takes place for example by rolling on a multi-roll or by hammering on rotary hammers. In this case, the diameter of the blank is reduced with simultaneous elongation of the material. For smaller diameter electrodes, the billet diameter is further reduced from about 4 mm by a drawing process. It has been found that pulling on thin diameters causes a longitudinal fiber structure and thereby extreme disruption of the microstructure within the electrode, since the grain boundary structures are parallel to the longitudinal axis of the blank, not only in the area of the electrode shaft but also in the area of the electrode tip. After the electrode tip has been formed by shaping processes known from the general state of the art, such as for example by cylindrical grinding or chemical removal, the grain boundary structure terminates at the oblique surface of the electrode tip.
Zur Verbesserung der Korngrenzenstruktur im Bereich der Elektrodenspitze ist es aus der
Die
Der Erfindung liegt die Aufgabe zugrunde, ein Verfahren zur Herstellung einer Elektrode bzw. Stromzuführung sowie eine Lampe mit einer derartigen Elektrode bzw. Stromzuführung zu schaffen, bei denen gegenüber herkömmlichen Lösungen ein verbessertes Betriebsverhalten ermöglicht ist.The invention has for its object to provide a method for producing an electrode or power supply and a lamp with such an electrode or power supply, in which compared to conventional solutions improved performance is possible.
Diese Aufgabe wird hinsichtlich des Verfahrens zur Herstellung einer Elektrode bzw. Stromzuführung durch die Merkmale des Anspruchs 1 gelöst. Eine besonders vorteilhafte Ausführung der Erfindung ist in demabhängigen Anspruch beschrieben.This object is achieved with regard to the method for producing an electrode or power supply by the features of
Bei dem erfindungsgemäßen Verfahren zur Herstellung einer Elektrode, wird das Gefüge zumindest eines Abschnitts der Elektrode mittels hochenergetischer Strahlung, vorzugsweise Laserstrahlung, zumindest teilweise umgewandelt. Aufgrund der Temperatureinwirkung der hochenergetischen Strahlung auf diesen Elektrodenabschnitt vereinigen sich die faserförmigen, langkristallinen Gefügebereiche zu kompakten, dichten Einheiten - mit anderen Worten - eine definierte Rekristallisation des Gefüges des Elektrodenabschnitts findet statt. Diese Rekristallisation bewirkt ein grobkristallines Gefüge im Bereich dieses Elek-trodenabschnitts. Dadurch weist dieser Elektrodenabschnitt eine dem Betriebszustand der Lampe im Wesentlichen entsprechende Gefügestruktur und Reinheit auf Der vorgenannte Elektrodenabschnitt umfasst vorzugsweise das entladungsseitige Ende der Elektrode. Die vorgenannte Gefügestruktur des entladungsseitigen Endes der Elektrode bleibt dadurch im Betrieb der Lampe stabil und es werden gute Zündeigenschaften sowie ein guter Bogenansatz gewährleistet. Dadurch ermöglicht die erfindungsgemäße Elektrodenspitze gegenüber dem Stand der Technik gemäß der
Vorzugsweise wird das Kristallgefüge durchgängig umgewandelt. Dadurch liegt auch nach längerem Betrieb der Entladungslampe eine definierte, grobkörnige Gefügeoberfläche des Elektrodenabschnitts vor.Preferably, the crystal structure is consistently converted. As a result, even after prolonged operation of the discharge lamp, a defined, coarse-grained microstructure surface of the electrode section is present.
Bei dem erfindungsgemäßen Verfahren zur Herstellung einer Stromzuführung, wird das Gefüge zumindest eines Abschnitts der Stromzuführung mittels hochenergetischer Strahlung, vorzugsweise Laserstrahlung, zumindest teilweise umgewandelt. Beispielsweise wird mittels der hochenergetischen Strahlung ein Oberflächenabschnitt der Stromzuführung behandelt, um zum Beispiel auf der Oberfläche haftende Verunreinigungen abzudampfen oder um die Oberfläche der Stromzuführung zu glätten oder um das Kristallgefüge der Stromzuführung an ihrer Oberfläche umzuwandeln und dadurch das so genannte Anglasungsverhalten der Stromzuführung zu verbessern, das heißt, die Haftung der Stromzuführung an dem sie umgebenden Glas des Lampengefäßes und somit die Gefahr der Rissbildung im Lampengefäß aufgrund unterschiedlicher thermischer Ausdehnungskoeffizienten von Glas- und Stromzuführungsmaterial zu verringern. Die Stromzuführung ist vorzugsweise als Draht aus Molybdän, Wolfram oder einer Legierung von Molybdän oder Wolfram ausgebildet.In the inventive method for producing a power supply, the structure of at least a portion of the power supply by means of high-energy radiation, preferably laser radiation, at least partially converted. For example, by means of the high-energy radiation, a surface portion of the power supply is treated, for example, to evaporate adhering to the surface impurities or to smooth the surface of the power supply or to convert the crystal structure of the power supply to its surface, thereby improving the so-called glazing behavior of the power supply, that is, to reduce the adhesion of the power supply to the surrounding glass of the lamp vessel and thus the risk of cracking in the lamp vessel due to different thermal expansion coefficients of glass and power supply material. The power supply is preferably formed as a wire of molybdenum, tungsten or an alloy of molybdenum or tungsten.
Eine erfindungsgemäß hergestellte Entladungslampe hat zumindest eine Elektrode und zumindest eine Stromzuführung, wobei das Gefüge zumindest eines Abschnitts der Elektrode bzw. der Stromzuführung mittels hochenergetischer Strahlung, vorzugsweise Laserstrahlung, zumindest teilweise umgewandelt ist.A discharge lamp produced according to the invention has at least one electrode and at least one power supply, wherein the structure of at least a portion of the electrode or the power supply by means of high-energy radiation, preferably laser radiation, at least partially converted.
Als besonders vorteilhaft hat es sich erwiesen, wenn ein Elektrodenabschnitt ein dem Betriebszustand der Entladungslampe im Wesentlichen entsprechendes Gefüge aufweist.It has proved to be particularly advantageous if an electrode section has a structure substantially corresponding to the operating state of the discharge lamp.
Gemäß dem Ausführungsbeispiel der Erfindung hat dieser Elektrodenabschnitt ein grobkristallines Gefüge.According to the embodiment of the invention, this electrode section has a coarsely crystalline structure.
Vorzugsweise hat dieser Elektrodenabschnitt eine dem Betriebszustand der Lampe im Wesentlichen entsprechende Reinheit. Dadurch werden Schwärzungen im Entladungsgefäß auf ein Minimum reduziert und die Lebensdauer der Entladungslampe wesentlich verlängert.Preferably, this electrode section has a purity substantially corresponding to the operating state of the lamp. As a result, blackening in the discharge vessel is reduced to a minimum and the service life of the discharge lamp is substantially extended.
Bei dem erfindungsgemäßen Ausführungsbeispiel ist dieser Elektrodenabschnitt mittels hochenergetischer Strahlung, vorzugsweise Laserstrahlung hergestellt.In the exemplary embodiment according to the invention, this electrode section is produced by means of high-energy radiation, preferably laser radiation.
Bei dem vorgenannten Elektrodenabschnitt handelt es sich um das entladungsseitige Ende der Elektrode. Die Erfindung wird vorzugsweise auf stabförmige Wolframelektroden, insbesondere für Hochdruckentladungslampen angewandt.The aforementioned electrode section is the discharge-side end of the electrode. The invention is preferably applied to rod-shaped tungsten electrodes, in particular for high-pressure discharge lamps.
Nachstehend wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher erläutert. Es zeigen:
Figur 1- eine schematische Darstellung einer erfindungsgemäß hergestellte Entladungslampe und
Figur 2- eine vergrößerte Darstellung einer Elektrode aus
.Figur 1
- FIG. 1
- a schematic representation of a discharge lamp according to the invention and
- FIG. 2
- an enlarged view of an electrode
FIG. 1 ,
Bei der in
Gemäß
Eine erfindungsgemäß hergestellte Elektrode 20, 22 ist nicht auf die beschriebene Formgebung der Elektrodenspitze 30 durch Laserstrahlung beschränkt, vielmehr kann die Elektrodenspitze 30 mittels jeder aus dem allgemeinen Stand der Technik bekannten Umformtechnik, insbesondere durch Schleifen, Ätzen, Hämmern oder dergleichen in beliebigen geometrischen Formen ausgebildet sein. Außerdem kann das entladungsseitige Ende 30 der Elektroden 20, 22 auch verdickt anstatt zugespitzt ausgebildet sein. Weiterhin kann die erfindungsgemäße Gefügeumwandlung des Elektrodenabschnitts 30 vor oder nach dem Verschweißen der Elektrode 20, 22 mit der Molybdänfolie 16, 18 erfolgen.An
Offenbart sind eine Lampe 1 mit zumindest einer Elektrode 20, 22, die einen Elektrodenschaft 24 und ein entladungsseitiges Elektrodenende 30 aufweist sowie ein Verfahren zur Herstellung einer derartigen Elektrode 20, 22. Erfindungsgemäß ist das Gefüge eines Abschnitts der Elektroden mittels hochenergetischer Strahlung, vorzugsweise Laserstrahlung zumindest teilweise umgewandelt.Disclosed are a
- 11
- Lampelamp
- 22
- Entladungsgefäßdischarge vessel
- 44
- Innenrauminner space
- 66
- Endabschnittend
- 88th
- Endabschnittend
- 1010
- Glaseinschmelzungglass seal
- 1212
- Glaseinschmelzungglass seal
- 1414
- Stromzuführungpower supply
- 1616
- Molybdänfoliemolybdenum foil
- 1818
- Molybdänfoliemolybdenum foil
- 2020
- Elektrodeelectrode
- 2222
- Elektrodeelectrode
- 2424
- Elektrodenschaftelectrode shaft
- 2626
- Endabschnittend
- 2828
- Endabschnittend
- 3030
- Elektrodenspitzeelectrode tip
- 3232
- KegelmantelflächeConical surface
- 3434
- Stirnflächeface
Claims (2)
- Method for producing a rod-shaped electrode (20, 22) for a discharge lamp, characterized in that a fibrous, long-crystalline structure of the electrode (20, 22) is converted into a coarse-crystalline structure by means of high-energy radiation at least at the discharge-side end (30) of the electrode (20, 22).
- Method according to Claim 1, the high-energy radiation being laser radiation.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005013760A DE102005013760A1 (en) | 2005-03-22 | 2005-03-22 | Method for producing an electrode and discharge lamp with such an electrode |
PCT/DE2006/000496 WO2006099849A1 (en) | 2005-03-22 | 2006-03-21 | Method for producing an electrode and gas discharge lamp having an electrode of this type |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1861862A1 EP1861862A1 (en) | 2007-12-05 |
EP1861862B1 true EP1861862B1 (en) | 2009-05-27 |
Family
ID=36648286
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06706032A Ceased EP1861862B1 (en) | 2005-03-22 | 2006-03-21 | Method for producing an electrode and gas discharge lamp having an electrode of this type |
Country Status (6)
Country | Link |
---|---|
US (1) | US20090015163A1 (en) |
EP (1) | EP1861862B1 (en) |
JP (1) | JP4918688B2 (en) |
CN (1) | CN101147225B (en) |
DE (3) | DE102005013760A1 (en) |
WO (1) | WO2006099849A1 (en) |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP5322217B2 (en) * | 2008-12-27 | 2013-10-23 | ウシオ電機株式会社 | Light source device |
JP2010205577A (en) * | 2009-03-04 | 2010-09-16 | Ushio Inc | Method of lighting light source device |
CN105304431B (en) * | 2014-05-29 | 2017-06-13 | 深圳凯世光研股份有限公司 | A kind of anode and its processing method, the short arc discharge lamp including the anode |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3300449A1 (en) * | 1983-01-08 | 1984-07-12 | Philips Patentverwaltung Gmbh, 2000 Hamburg | METHOD FOR PRODUCING AN ELECTRODE FOR A HIGH PRESSURE GAS DISCHARGE LAMP |
JPH05283039A (en) * | 1992-03-31 | 1993-10-29 | Toshiba Lighting & Technol Corp | Metal vapor discharge lamp |
DE9415217U1 (en) * | 1994-09-21 | 1996-01-25 | Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH, 81543 München | High pressure discharge lamp |
US6705914B2 (en) * | 2000-04-18 | 2004-03-16 | Matsushita Electric Industrial Co., Ltd. | Method of forming spherical electrode surface for high intensity discharge lamp |
JP4846173B2 (en) * | 2000-04-18 | 2011-12-28 | パナソニック株式会社 | High pressure discharge lamp and electrode for high pressure discharge lamp |
DE10026567A1 (en) * | 2000-05-30 | 2001-12-06 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Process for labeling quartz glass lamps and quartz glass lamps made therewith |
JP2004079323A (en) * | 2002-08-16 | 2004-03-11 | Fuji Photo Film Co Ltd | Manufacturing method for discharge tube |
DE502004008963D1 (en) * | 2003-12-22 | 2009-03-26 | Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh | Electrode system for a discharge lamp, discharge lamp with such an electrode system and method for producing such an electrode system |
-
2005
- 2005-03-22 DE DE102005013760A patent/DE102005013760A1/en not_active Withdrawn
-
2006
- 2006-03-21 JP JP2008502242A patent/JP4918688B2/en not_active Expired - Fee Related
- 2006-03-21 US US11/886,962 patent/US20090015163A1/en not_active Abandoned
- 2006-03-21 CN CN200680009212XA patent/CN101147225B/en not_active Expired - Fee Related
- 2006-03-21 EP EP06706032A patent/EP1861862B1/en not_active Ceased
- 2006-03-21 DE DE502006003811T patent/DE502006003811D1/en not_active Expired - Fee Related
- 2006-03-21 DE DE112006001333T patent/DE112006001333A5/en not_active Withdrawn
- 2006-03-21 WO PCT/DE2006/000496 patent/WO2006099849A1/en active Application Filing
Also Published As
Publication number | Publication date |
---|---|
EP1861862A1 (en) | 2007-12-05 |
US20090015163A1 (en) | 2009-01-15 |
WO2006099849A1 (en) | 2006-09-28 |
CN101147225A (en) | 2008-03-19 |
JP4918688B2 (en) | 2012-04-18 |
DE112006001333A5 (en) | 2008-03-06 |
JP2008533689A (en) | 2008-08-21 |
DE102005013760A1 (en) | 2006-09-28 |
CN101147225B (en) | 2012-06-27 |
DE502006003811D1 (en) | 2009-07-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE10291427B4 (en) | Metal halide lamp for a motor vehicle headlight | |
EP0703600B1 (en) | High pressure discharge lamp | |
EP1817790B1 (en) | High-pressure discharge lamp | |
EP0451647B1 (en) | High-pressure discharge lamp and method for its manufacture | |
WO2006099850A2 (en) | Lamp with a power lead and electrode | |
EP0901150B1 (en) | Electrode, procedure and device for its manufacture | |
EP1861862B1 (en) | Method for producing an electrode and gas discharge lamp having an electrode of this type | |
DE102006061375B4 (en) | Mercury high-pressure discharge lamp with an anode containing tungsten and potassium, which has a grain count greater than 200 grains per mm 2 and a density greater than 19.05 g / cm 3 | |
DE2253915C2 (en) | Process for producing vacuum-tight connections between a ceramic part and an aluminum part and vacuum pistons obtained by this process | |
EP1730766B1 (en) | Electrode system for a high-pressure discharge lamp | |
EP2338161B1 (en) | Discharge lamp with electrode | |
DE102004043247B4 (en) | Electrode for high-pressure discharge lamps and high-pressure discharge lamp with such electrodes | |
EP0219861B1 (en) | Process for manufacturing a metal halide high-pressure discharge lamp having a single pinch, and a lamp manufactured according to this process | |
DE10256389A1 (en) | Metal halogen lamp has ceramic discharge piece with electrode system having molybdenum tungsten rod inside an outer niobium tube | |
EP1548788B1 (en) | Elektrode system for discharge lamp, discharge lamp comprising such electrode system and method of fabrication of such an electrode system | |
EP1756853B1 (en) | Electrode for a discharge lamp and discharge lamp | |
EP1465236A2 (en) | Discharge lamp | |
EP2154706A2 (en) | Foil for lamps and electric lamp with such a foil and corresponding production method | |
EP1465235A2 (en) | Discharge lamp | |
DE102018201068B4 (en) | BULB FOR VEHICLE HEADLIGHTS AND MANUFACTURING PROCESSES | |
DE102011075899A1 (en) | Gas discharge lamp and electrode for a gas discharge lamp | |
WO2005062343A2 (en) | Electrode for a high pressure discharge lamp | |
WO2009146752A1 (en) | Cable bushing with a foil connection | |
EP2526563B1 (en) | Method for producing an electrode for a high-pressure discharge lamp and high-pressure discharge lamp comprising at least one electrode thus produced | |
EP0396888B1 (en) | Gas laser |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
17P | Request for examination filed |
Effective date: 20070830 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): DE FR GB HU IT |
|
17Q | First examination report despatched |
Effective date: 20080129 |
|
DAX | Request for extension of the european patent (deleted) | ||
RBV | Designated contracting states (corrected) |
Designated state(s): DE FR GB HU IT |
|
GRAP | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOSNIGR1 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG |
|
GRAS | Grant fee paid |
Free format text: ORIGINAL CODE: EPIDOSNIGR3 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB HU IT |
|
REG | Reference to a national code |
Ref country code: GB Ref legal event code: FG4D Free format text: NOT ENGLISH |
|
REF | Corresponds to: |
Ref document number: 502006003811 Country of ref document: DE Date of ref document: 20090709 Kind code of ref document: P |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: TP |
|
REG | Reference to a national code |
Ref country code: HU Ref legal event code: AG4A Ref document number: E005909 Country of ref document: HU |
|
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed |
Effective date: 20100302 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502006003811 Country of ref document: DE Ref country code: DE Ref legal event code: R409 Ref document number: 502006003811 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R409 Ref document number: 502006003811 Country of ref document: DE |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502006003811 Country of ref document: DE Owner name: OSRAM GMBH, DE Free format text: FORMER OWNER: OSRAM GESELLSCHAFT MIT BESCHRAENKTER HAFTUNG, 81543 MUENCHEN, DE Effective date: 20111213 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502006003811 Country of ref document: DE Owner name: OSRAM GMBH, DE Free format text: FORMER OWNER: OSRAM AG, 81543 MUENCHEN, DE Effective date: 20130205 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R081 Ref document number: 502006003811 Country of ref document: DE Owner name: OSRAM GMBH, DE Free format text: FORMER OWNER: OSRAM GMBH, 81543 MUENCHEN, DE Effective date: 20130823 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 11 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 12 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: PLFP Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 20180321 Year of fee payment: 13 Ref country code: DE Payment date: 20180322 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: HU Payment date: 20180314 Year of fee payment: 13 Ref country code: FR Payment date: 20180323 Year of fee payment: 13 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: IT Payment date: 20180327 Year of fee payment: 13 |
|
REG | Reference to a national code |
Ref country code: DE Ref legal event code: R119 Ref document number: 502006003811 Country of ref document: DE |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 20190321 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20191001 Ref country code: HU Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190322 Ref country code: GB Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190321 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190331 Ref country code: IT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20190321 |