EP1063682A1 - Method for driving a discharge lamp - Google Patents

Method for driving a discharge lamp Download PDF

Info

Publication number
EP1063682A1
EP1063682A1 EP00107629A EP00107629A EP1063682A1 EP 1063682 A1 EP1063682 A1 EP 1063682A1 EP 00107629 A EP00107629 A EP 00107629A EP 00107629 A EP00107629 A EP 00107629A EP 1063682 A1 EP1063682 A1 EP 1063682A1
Authority
EP
European Patent Office
Prior art keywords
discharge
generated
xenon
dielectric
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.)
Granted
Application number
EP00107629A
Other languages
German (de)
French (fr)
Other versions
EP1063682B1 (en
Inventor
Gerhard DÖLL
Hartwig Riehl
Martin Enders
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.)
Osram GmbH
Original Assignee
Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
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 Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH filed Critical Patent Treuhand Gesellschaft fuer Elektrische Gluehlampen mbH
Publication of EP1063682A1 publication Critical patent/EP1063682A1/en
Application granted granted Critical
Publication of EP1063682B1 publication Critical patent/EP1063682B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/92—Lamps with more than one main discharge path
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/02—Details
    • H01J61/12—Selection of substances for gas fillings; Specified operating pressure or temperature
    • H01J61/16—Selection of substances for gas fillings; Specified operating pressure or temperature having helium, argon, neon, krypton, or xenon as the principle constituent
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J61/00—Gas-discharge or vapour-discharge lamps
    • H01J61/70—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr
    • H01J61/76—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a filling of permanent gas or gases only
    • H01J61/78—Lamps with low-pressure unconstricted discharge having a cold pressure < 400 Torr having a filling of permanent gas or gases only with cold cathode; with cathode heated only by discharge, e.g. high-tension lamp for advertising
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J65/00—Lamps without any electrode inside the vessel; Lamps with at least one main electrode outside the vessel
    • H01J65/04—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels
    • H01J65/042—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field
    • H01J65/046—Lamps in which a gas filling is excited to luminesce by an external electromagnetic field or by external corpuscular radiation, e.g. for indicating plasma display panels by an external electromagnetic field the field being produced by using capacitive means around the vessel

Definitions

  • the invention relates to a method for operating a discharge lamp according to the Preamble of claim 1.
  • WO 96/36066 Such a method is described, for example, in WO 96/36066 disclosed.
  • This document describes an operating method for a discharge lamp, in which in the discharge lamp a first, dielectric barrier discharge and a second, non-dielectric discharge is generated.
  • the dielectric Non-disabled discharge is superimposed on the dielectric disabled discharge or upstream.
  • Neon gas serves as the discharge medium.
  • the dielectric barrier discharge generates neon excimers that emit UV radiation when they decay in turn is converted into light by means of a phosphor, while the di-electrical Non-disabled discharge mainly emits red light.
  • This method does not allow the discharge lamp to be dimmed because of changes in the electrical Power of the two discharges to shift the color location of the emitted Lead light.
  • the operating method according to the invention produces two different ones in the discharge lamp Gas discharges, namely a dielectric barrier discharge and a dielectrically unimpeded discharge, in both cases as the discharge medium Xenon is used.
  • a dielectric barrier discharge due to the formation of xenon excimers of ultraviolet radiation is converted into light by phosphors, while the dielectric is not disabled Discharge as an ultraviolet radiation-emitting xenon low-pressure discharge is formed, the UV radiation emitted by the xenon low-pressure discharge is also converted into light by phosphors.
  • brightness control of the light emitted by the discharge lamp is invented to adjust the non-dimmed operating state the dielectric disabled Discharge generates and to set a dimmed operating state the xenon low pressure discharge generated.
  • the high operating mode of the discharge lamp means that the high Luminous efficacy of a dielectric barrier discharge and the good dimmability a low pressure discharge.
  • xenon gas as the discharge medium is used for both the dielectric disabled and the Low pressure discharge predominantly ultraviolet radiation, which is caused by phosphors in white light or monochrome light is converted, so that the addition of Mercury can be dispensed with in the discharge space.
  • the color of the of the discharge lamp emitted light is determined solely by the phosphors. It there are therefore no color locus shifts in the mode of operation according to the invention by changing the electrical power of the two types of discharge.
  • the dielectric barrier discharge is reduced and further reducing the Brightness the dielectric barrier discharge is switched off and only the xenon low pressure discharge generated, the electrical power of the xenon low pressure discharge depending on the desired brightness or dimming level is set.
  • the Xenon low pressure discharge can be done in one essential Dim more than the dielectric barrier discharge without extinguishing the discharge must be feared or an inhomogeneous discharge occurs.
  • the dielectrically impeded discharge is advantageously carried out by means of two external electrodes, which are attached to the outer surface of the discharge vessel are generated to ensure the most homogeneous discharge possible.
  • the dielectric Unhindered discharge is advantageously accomplished by means of two within of the discharge vessel arranged cold cathodes generated. To generate the Dielectric barrier discharge, the two outer electrodes are advantageously acted upon by high voltage pulses while generating the xenon low pressure discharge the cold cathodes advantageously with a medium frequency AC voltage or high voltage pulses are applied.
  • FIG. 1 shows a schematic illustration of a discharge lamp, on the basis of which the inventive method is described in more detail.
  • This Discharge lamp is used, for example, as display backlighting for the display device in motor vehicles or airplanes.
  • the discharge lamp has a tubular, gas-tight closure at the ends Discharge vessel 1 made of glass, which has a length of about 160 mm and a diameter of approximately 9 mm and is coated on the inside with phosphor 2.
  • the Both ends of the discharge vessel 1 are each in the interior of the Discharge vessel 1 protruding, cup-like cold cathode 3, 4 equipped.
  • the cold cathodes 3, 4 are gas-tight in the ends of the discharge vessel 1 melted down power supply lines 8, 9 connected to an operating device 7.
  • On the outer surface of the discharge vessel 1 are two in the longitudinal direction extending, opposite outer electrodes 5, 6 applied. in the The interior of the discharge vessel 1 is xenon with a filling pressure of about 15 kPa.
  • the outer electrodes 5, 6 by means of the operating device 7 High voltage pulses applied. These are unipolar, negative Voltage pulses of approx. 3 to 5 kV with pulse widths of approx. 2-3 ⁇ s and pulse intervals of approx. 10 ⁇ s.
  • a dielectric barrier discharge out In the interior of the discharge vessel 1 forms transversely to Longitudinal extension of the discharge vessel 1 is a dielectric barrier discharge out. In this discharge, xenon excimers are generated which emit ultraviolet radiation decays. The ultraviolet radiation is due to the phosphor coating 2 converted to white light. To the brightness of the lamp slightly to reduce the electrical performance of the dielectric disabled Discharge by blanking pulse trains reduced.
  • This dimming procedure allows only a comparatively slight reduction in brightness, namely only in a ratio of 20: 1, because if the pulse sequences are blanked out too much, an inhomogeneous Discharge occurs with brightness varying locally over the lamp.
  • the control gear enables a greater reduction in brightness 7 ignited a low-pressure xenon discharge via the cold cathodes 3, 4 and the dielectric barrier discharge is switched off.
  • the cold cathodes 3, 4 with high voltage pulses from approx. 5 to 10 kV and a pulse width of approx. 1 ⁇ s as well as a pulse repetition frequency of about 20 kHz.
  • the UV radiation generated in the discharge is converted into white light by the phosphor layer 2.
  • Dimming the Xenon low-pressure discharge takes place by blanking out pulse sequences with blanking frequencies above 75 Hz. In this way, the brightness of the discharge lamp be continuously dimmed in a ratio of 1000 to 1.
  • the high voltage pulses for the cold cathodes 3, 4 and for the outer electrodes 5, 6 generated by the same operating device 7.
  • the invention is not limited to the exemplary embodiment explained in more detail above.
  • the xenon low pressure discharge instead of by high voltage implementations can also be generated by a medium-frequency AC voltage.
  • the method according to the invention can also be applied to lamps are, instead of the dielectrically disabled outer electrodes 5, 6 dielectrically disabled Have inner electrodes 5 ', 6'.
  • a lamp with such internal electrodes 5 ', 6' is shown in highly schematic form in FIG.
  • the inner electrodes 5 ', 6' are here as opposed, longitudinally extending metal strips formed directly on the inner wall of the discharge vessel 1 are attached.
  • the inner wall of the discharge vessel 1 is coated with a phosphor layer 2 provided and possibly coated with a further dielectric 2 ', see above that the metal strips 5 ', 6' between the inner wall of the discharge vessel 1 and the phosphor layer 2 or the dielectric 2 'is arranged.
  • the dielectric disabled discharge forms perpendicular to the metal strips 5 ', 6'.
  • the cold cathode discharge is by means of two in the end closures 10, 11 of the tubular Discharge vessel 1 arranged cup electrodes 3, 4 generated. But it is also possible to apply the method according to the invention to lamps which in addition the cold cathodes one or more internal electrodes and one or more external electrodes, have to generate the dielectric barrier discharge.
  • a such a lamp is, for example, in German patent DE 197 18 395 C1 disclosed.

Abstract

A first, dielectrically-limited discharge is produced by forming xenon excimer under UV radiation. A second discharge is produced without dielectric limitation. This is a low pressure xenon discharge emitting UV radiation. Fluorescent materials (2) convert radiation from both discharges, into visible light.

Description

Die Erfindung betrifft ein Verfahren zum Betrieb einer Entladungslampe gemäß dem Oberbegriff des Patentanspruchs 1.The invention relates to a method for operating a discharge lamp according to the Preamble of claim 1.

I. Stand der Technik I. State of the art

Ein derartiges Verfahren ist beispielsweise in der Offenlegungsschrift WO 96/36066 offenbart. Diese Schrift beschreibt ein Betriebsverfahren für eine Entladungslampe, bei dem in der Entladungslampe eine erste, dielektrisch behinderte Entladung und eine zweite, dielektrisch nicht-behinderte Entladung erzeugt werden. Der dielektrisch nicht-behinderten Entladung wird die dielektrisch behinderte Entladung überlagert oder zeitlich vorgeschaltet. Über das Verhältnis der elektrischen Leistungen beider Entladungen wird der Farbort des von der Entladungslampe emittierten Lichts gezielt eingestellt. Als Entladungsmedium dient Neongas. Die dielektrisch behinderte Entladung generiert Neon-Excimere, die bei ihrem Zerfall UV-Strahlung emittieren, die wiederum mittels eines Leuchtstoffes in Licht umgewandelt wird, während die di-elektrisch nicht-behinderte Entladung vorwiegend rotes Licht emittiert. Dieses Verfahren erlaubt kein Dimmen der Entladungslampe, da Änderungen der elektrischen Leistung der beiden Entladungen zu einer Verschiebung des Farbortes des emittierten Lichtes führen.Such a method is described, for example, in WO 96/36066 disclosed. This document describes an operating method for a discharge lamp, in which in the discharge lamp a first, dielectric barrier discharge and a second, non-dielectric discharge is generated. The dielectric Non-disabled discharge is superimposed on the dielectric disabled discharge or upstream. About the relationship of the electrical power of both The color location of the light emitted by the discharge lamp is targeted for discharges set. Neon gas serves as the discharge medium. The dielectric barrier discharge generates neon excimers that emit UV radiation when they decay in turn is converted into light by means of a phosphor, while the di-electrical Non-disabled discharge mainly emits red light. This method does not allow the discharge lamp to be dimmed because of changes in the electrical Power of the two discharges to shift the color location of the emitted Lead light.

II. Darstellung der Erfindung II. Presentation of the invention

Es ist die Aufgabe der Erfindung, ein Verfahren zum Betrieb einer Entladungslampe bereitzustellen, bei dem in der Entladungslampe eine dielektrisch behinderte und eine dielektrisch nicht behinderte Entladung erzeugt werden, und das eine Helligkeitsregelung des von der Entladungslampe emittierten Lichtes ermöglicht. Außerdem soll auf die Verwendung von Quecksilber in der Entladungslampe verzichtet werden. It is the object of the invention to provide a method for operating a discharge lamp To provide, in the discharge lamp a dielectric barrier and a Dielectric unobstructed discharge are generated, and that a brightness control of the light emitted by the discharge lamp. In addition, should mercury is not used in the discharge lamp.

Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Patentanspruchs 1 gelöst. Besonders vorteilhafte Ausführungen der Erfindung sind in den Unteransprüchen beschrieben.This object is achieved by the characterizing features of Claim 1 solved. Particularly advantageous embodiments of the invention are shown in described the subclaims.

Das erfindungsgemäße Betriebsverfahren erzeugt in der Entladungslampe zwei unterschiedliche Gasentladungen, nämlich eine dielektrisch behinderte Entladung und eine dielektrisch nicht behinderte Entladung, wobei in beiden Fällen als Entladungsmedium Xenon verwendet wird. Erfindungsgemäß generiert die dielektrisch behinderte Entladung durch Bildung von Xenon-Excimeren ultraviolette Strahlung, die durch Leuchtstoffe in Licht umgewandelt wird, während die dielektrisch nicht behinderte Entladung als ultraviolette Strahlung emittierende Xenon-Niederdruckentladung ausgebildet ist, wobei die von der Xenon-Niederdruckentladung emittierte UVStrahlung ebenfalls durch Leuchtstoffe in Licht umgewandelt wird. Bei der Helligkeitsregelung des von der Entladungslampe emittierten Lichtes wird erfindungsgemäß zur Einstellung des ungedimmten Betriebszustandes die dielektrisch behinderte Entladung erzeugt und zur Einstellung eines gedimmten Betriebszustandes die Xenon-Niederdruckentladung generiert.The operating method according to the invention produces two different ones in the discharge lamp Gas discharges, namely a dielectric barrier discharge and a dielectrically unimpeded discharge, in both cases as the discharge medium Xenon is used. According to the invention generates the dielectric barrier Discharge due to the formation of xenon excimers of ultraviolet radiation is converted into light by phosphors, while the dielectric is not disabled Discharge as an ultraviolet radiation-emitting xenon low-pressure discharge is formed, the UV radiation emitted by the xenon low-pressure discharge is also converted into light by phosphors. With brightness control of the light emitted by the discharge lamp is invented to adjust the non-dimmed operating state the dielectric disabled Discharge generates and to set a dimmed operating state the xenon low pressure discharge generated.

Durch diese erfindungsgemäße Betriebsweise der Entladungslampe werden die hohe Lichtausbeute einer dielektrisch behinderten Entladung und die gute Dimmbarkeit einer Niederdruckentladung miteinander vereint. Da als Entladungsmedium Xenongas genutzt wird, entsteht sowohl bei der dielektrisch behinderten als auch bei der Niederdruckentladung vorwiegend ultraviolette Strahlung, die durch Leuchtstoffe in weißes Licht oder einfarbiges Licht umgewandelt wird, so daß auf den Zusatz von Quecksilber im Entladungsraum verzichtet werden kann. Die Farbe des von der Entladungslampe emittierten Lichtes wird allein durch die Leuchtstoffe bestimmt. Es entstehen daher bei der erfindungsgemäßen Betriebsweise keine Farbortverschiebungen durch Änderung der elektrischen Leistung der beiden Entladungsarten. Vorteilhafterweise wird zur Einstellung des ungedimmten Betriebszustandes in der Entladungslampe nur die dielektrisch behinderte Entladung erzeugt, da diese eine höhere Lichtausbeute gewährleistet als die dielektrisch nicht behinderte Entladung. Zur Verringerung der Helligkeit wird vorteilhafterweise zunächst die elektrische Leistung der dielektrisch behinderten Entladung reduziert und zur weiteren Verringerung der Helligkeit die dielektrisch behinderte Entladung ausgeschaltet und nur die XenonNiederdruckentladung generiert, wobei die elektrische Leistung der Xenon-Niederdruckentladung in Abhängigkeit von der gewünschten Helligkeit oder Dimmstufe eingestellt wird. Die Xenon-Niederdruckentladung läßt sich in einem wesentlich stärkeren Maß dimmen, als die dielektrisch behinderte Entladung, ohne daß ein Verlöschen der Entladung befürchtet werden muß oder eine inhomogene Entladung auftritt.The high operating mode of the discharge lamp means that the high Luminous efficacy of a dielectric barrier discharge and the good dimmability a low pressure discharge. As xenon gas as the discharge medium is used for both the dielectric disabled and the Low pressure discharge predominantly ultraviolet radiation, which is caused by phosphors in white light or monochrome light is converted, so that the addition of Mercury can be dispensed with in the discharge space. The color of the of the discharge lamp emitted light is determined solely by the phosphors. It there are therefore no color locus shifts in the mode of operation according to the invention by changing the electrical power of the two types of discharge. Advantageously is used to set the undimmed operating state in the discharge lamp only the dielectrically impeded discharge produces, since this has a higher Luminous efficacy is guaranteed as the discharge is not impeded by dielectric. To reduce The brightness is advantageously first the electrical power the dielectric barrier discharge is reduced and further reducing the Brightness the dielectric barrier discharge is switched off and only the xenon low pressure discharge generated, the electrical power of the xenon low pressure discharge depending on the desired brightness or dimming level is set. The Xenon low pressure discharge can be done in one essential Dim more than the dielectric barrier discharge without extinguishing the discharge must be feared or an inhomogeneous discharge occurs.

Vorteilhafterweise wird die dielektrisch behinderte Entladung mittels zweier Au-ßenelektroden, die auf der äußeren Oberfläche des Entladungsgefäßes angebracht sind, erzeugt, um eine möglichst homogene Entladung zu gewährleisten. Die dielektrisch nicht behinderte Entladung wird vorteilhafterweise mittels zweier innerhalb des Entladungsgefäßes angeordneter Kaltkathoden generiert. Zur Erzeugung der dielektrisch behinderten Entladung werden die beiden Außenelektroden vorteilhafterweise mit Hochspannungsimpulsen beaufschlagt, während zur Erzeugung der Xenon-Niederdruckentladung die Kaltkathoden vorteilhafterweise mit einer mittelfrequenten Wechselspannung oder mit Hochspannungsimpulen beaufschlagt werden.The dielectrically impeded discharge is advantageously carried out by means of two external electrodes, which are attached to the outer surface of the discharge vessel are generated to ensure the most homogeneous discharge possible. The dielectric Unhindered discharge is advantageously accomplished by means of two within of the discharge vessel arranged cold cathodes generated. To generate the Dielectric barrier discharge, the two outer electrodes are advantageously acted upon by high voltage pulses while generating the xenon low pressure discharge the cold cathodes advantageously with a medium frequency AC voltage or high voltage pulses are applied.

III. Beschreibung des bevorzugten Ausführungsbeispiels III. Description of the preferred embodiment

Nachstehend wird die Erfindung anhand eines bevorzugten Ausführungsbeispiels näher erläutert. Die Figur 1 zeigt eine schematische Darstellung einer Entladungslampe, anhand der das erfindungesmäße Verfahren näher beschrieben wird. Diese Entladungslampe dient beispielsweise als Display-Hinterleuchtung für Anzeigevorrichtung in Kraftfahrzeugen oder Flugzeugen.The invention based on a preferred embodiment explained in more detail. FIG. 1 shows a schematic illustration of a discharge lamp, on the basis of which the inventive method is described in more detail. This Discharge lamp is used, for example, as display backlighting for the display device in motor vehicles or airplanes.

Die Entladungslampe besitzt ein rohrartiges, an den Enden gasdicht verschlossenes Entladungsgefäß 1 aus Glas, das eine Länge von ca. 160 mm und einen Durchmesser von ca. 9 mm aufweist und auf der Innenseite mit Leuchtstoff 2 beschichtet ist. Die beiden Enden des Entladungsgefäßes 1 sind jeweils mit einer in den Innenraum des Entladungsgefäßes 1 hineinragenden, becherartigen Kaltkathode 3, 4 ausgestattet. Die Kaltkathoden 3, 4 sind durch in den Enden des Entladungsgefäßes 1 gasdicht eingeschmolzene Stromzuführungen 8, 9 mit einem Betriebsgerät 7 verbunden. Auf der äußeren Oberfläche des Entladungsgefäßes 1 sind zwei sich in Längsrichtung erstreckende, einander gegenüberliegende Außenelektroden 5, 6 aufgebracht. Im Innenraum des Entladungsgefäßes 1 befindet sich Xenon mit einem Fülldruck von ungefähr 15 kPa. Zur Einstellung des ungedimmten Betriebszustandes der Entladungslampe werden die Außenelektroden 5, 6 mittels des Betriebsgerätes 7 mit Hochspannungsimpulsen beaufschlagt. Hierbei handelt es sich um unipolare, negative Spannungsimpulse von ca. 3 bis 5 kV mit Pulsbreiten von ca. 2-3 µs und Pulsabständen von ca. 10 µs. Im Innenraum des Entladungsgefäß 1 bildet sich quer zur Längserstreckung des Entladungsgefäßes 1 eine dielektrisch behinderte Entladung aus. In dieser Entladung werden Xenon-Excimere erzeugt, die unter Emission von ultravioletter Strahlung zerfallen. Die ultraviolette Strahlung wird durch die Leuchtstoffbeschichtung 2 in weißes Licht umgewandelt. Um die Helligkeit der Lampe geringfügig zu reduzieren, wird die elektrische Leistung der dielektrisch behinderten Entladung durch Austastung von Pulsfolgen verringert. Dieses Dimmverfahren erlaubt nur eine vergleichsweise geringfügige Reduktion der Helligkeit, nämlich nur im Verhältnis 20:1, da bei zu starker Austastung der Pulsfolgen eine inhomogene Entladung mit örtlich über die Lampe variierender Helligkeit entsteht. Um eine wei-tere, stärkere Reduktion der Helligkeit zu ermöglichen, wird mittels des Betriebsgerätes 7 über die Kaltkathoden 3, 4 eine Xenon-Niederdruckentladung gezündet und die dielektrisch behinderte Entladung abgeschaltet. Zur Erzeugung der XenonNiederdruckentladung werden die Kaltkathoden 3, 4 mit Hochspannungsimpulsen von ca. 5 bis 10 kV und einer Impulsbreite von ca. 1 µs sowie einer Impulsfolgefrequenz von ca. 20 kHz beaufschlagt. Die in der Entladung entstehende UV-Strahlung wird von der Leuchtstoffschicht 2 in weißes Licht umgewandelt. Das Dimmen der Xenon-Niederdruckentladung erfolgt durch Austastung von Impulsfolgen mit Austastfrequenzen oberhalb von 75 Hz. Auf diese Weise kann die Helligkeit der Entladungslampe im Verhältnis 1000 zu 1 kontinuierlich gedimmt werden. Die Hochspannungsimpulse für die Kaltkathoden 3, 4 und für die Außenelektroden 5, 6 werden von demselben Betriebsgerät 7 generiert. The discharge lamp has a tubular, gas-tight closure at the ends Discharge vessel 1 made of glass, which has a length of about 160 mm and a diameter of approximately 9 mm and is coated on the inside with phosphor 2. The Both ends of the discharge vessel 1 are each in the interior of the Discharge vessel 1 protruding, cup-like cold cathode 3, 4 equipped. The cold cathodes 3, 4 are gas-tight in the ends of the discharge vessel 1 melted down power supply lines 8, 9 connected to an operating device 7. On the outer surface of the discharge vessel 1 are two in the longitudinal direction extending, opposite outer electrodes 5, 6 applied. in the The interior of the discharge vessel 1 is xenon with a filling pressure of about 15 kPa. For setting the undimmed operating state of the discharge lamp the outer electrodes 5, 6 by means of the operating device 7 High voltage pulses applied. These are unipolar, negative Voltage pulses of approx. 3 to 5 kV with pulse widths of approx. 2-3 µs and pulse intervals of approx. 10 µs. In the interior of the discharge vessel 1 forms transversely to Longitudinal extension of the discharge vessel 1 is a dielectric barrier discharge out. In this discharge, xenon excimers are generated which emit ultraviolet radiation decays. The ultraviolet radiation is due to the phosphor coating 2 converted to white light. To the brightness of the lamp slightly to reduce the electrical performance of the dielectric disabled Discharge by blanking pulse trains reduced. This dimming procedure allows only a comparatively slight reduction in brightness, namely only in a ratio of 20: 1, because if the pulse sequences are blanked out too much, an inhomogeneous Discharge occurs with brightness varying locally over the lamp. Another, The control gear enables a greater reduction in brightness 7 ignited a low-pressure xenon discharge via the cold cathodes 3, 4 and the dielectric barrier discharge is switched off. To generate the xenon low pressure discharge the cold cathodes 3, 4 with high voltage pulses from approx. 5 to 10 kV and a pulse width of approx. 1 µs as well as a pulse repetition frequency of about 20 kHz. The UV radiation generated in the discharge is converted into white light by the phosphor layer 2. Dimming the Xenon low-pressure discharge takes place by blanking out pulse sequences with blanking frequencies above 75 Hz. In this way, the brightness of the discharge lamp be continuously dimmed in a ratio of 1000 to 1. The high voltage pulses for the cold cathodes 3, 4 and for the outer electrodes 5, 6 generated by the same operating device 7.

Die Erfindung beschränkt sich nicht auf das oben näher erläuterte Ausführungsbeispiel. Beispielsweise kann die Xenon-Niederdruckentladung anstatt durch Hochspannungsimplse auch durch eine mittelfrequente Wechseispannung generiert werden. Außerdem kann das erfindungsgemäße Verfahren auch auf Lampen angewandt werden, die statt der dielektrisch behinderten Außenelektroden 5, 6 dielektrisch behinderte Innenelektroden 5', 6' aufweisen. Eine Lampe mit derartigen Innenelektroden 5', 6' ist in der Figur 2 stark schematisiert abgebildet. Die Innenelektroden 5', 6' sind hier als einander gegenüberliegende, sich in Längsrichtung erstreckende Metallstreifen ausgebildet, die unmittelbar auf der Innenwand des Entladungsgefäßes 1 angebracht sind. Die Innenwand des Entladungsgefäßes 1 ist mit einer Leuchtstoffschicht 2 versehen und eventuell mit einem weiteren Dielektrikum 2' beschichtet, so daß die Metallstreifen 5', 6' zwischen der Innenwand des Entladungsgefäßes 1 und der Leuchtstoffschicht 2 bzw. dem Dielektrikum 2' angeordnet ist. Die dielektrisch behinderte Entladung bildet sich senkrecht zu den Metallstreifen 5', 6' aus. Die Kaltkathodenentladung wird mittels zweier in den Endverschlüssen 10, 11 des rohrartigen Entladungsgefäßes 1 angeordneten Becherelektroden 3, 4 erzeugt. Es ist aber auch möglich, das erfindungsgemäße Verfahren auf Lampen anzuwenden, die neben den Kaltkathoden eine oder mehrere Innenelektroden und eine oder mehrere Außenelektrode, zur Erzeugung der dielektrisch behinderten Entladung aufweisen. Eine solche Lampe ist beispielsweise in der deutschen Patentschrift DE 197 18 395 C1 offenbart.The invention is not limited to the exemplary embodiment explained in more detail above. For example, the xenon low pressure discharge instead of by high voltage implementations can also be generated by a medium-frequency AC voltage. In addition, the method according to the invention can also be applied to lamps are, instead of the dielectrically disabled outer electrodes 5, 6 dielectrically disabled Have inner electrodes 5 ', 6'. A lamp with such internal electrodes 5 ', 6' is shown in highly schematic form in FIG. The inner electrodes 5 ', 6' are here as opposed, longitudinally extending metal strips formed directly on the inner wall of the discharge vessel 1 are attached. The inner wall of the discharge vessel 1 is coated with a phosphor layer 2 provided and possibly coated with a further dielectric 2 ', see above that the metal strips 5 ', 6' between the inner wall of the discharge vessel 1 and the phosphor layer 2 or the dielectric 2 'is arranged. The dielectric disabled discharge forms perpendicular to the metal strips 5 ', 6'. The cold cathode discharge is by means of two in the end closures 10, 11 of the tubular Discharge vessel 1 arranged cup electrodes 3, 4 generated. But it is also possible to apply the method according to the invention to lamps which in addition the cold cathodes one or more internal electrodes and one or more external electrodes, have to generate the dielectric barrier discharge. A such a lamp is, for example, in German patent DE 197 18 395 C1 disclosed.

Claims (8)

Verfahren zum Betrieb einer Entladungslampe, wobei in der Entladungslampe eine erste, dielektrisch behinderte Entladung und eine zweite, dielektrisch nicht behinderte Entladung erzeugt wird,
dadurch gekennzeichnet, daß mittels der ersten, dielektrisch behinderten Entladung durch Bildung von Xenon-Excimeren UV-Strahlung erzeugt wird, die zweite, dielektrisch nicht behinderte Entladung eine UV-Strahlung emittierende Xenon-Niederdruckentladung ist, die von beiden Entladungen generierte UV-Strahlung mittels eines oder mehrerer Leuchtstoffe (2; 2') in sichtbares Licht umgewandelt wird, die Helligkeit der Entladungslampe geregelt wird, indem zur Einstellung des ungedimmten Zustandes in der Entladungslampe die dielektrisch behinderte Entladung erzeugt wird und zur Einstellung eines gedimmten Zustandes in der Entladungslampe die Xenon-Niederdruckentladung erzeugt wird. Method for operating a discharge lamp, a first, dielectrically impeded discharge and a second, dielectrically not impeded discharge being generated in the discharge lamp,
characterized in that UV radiation is generated by means of the first, dielectric barrier discharge by the formation of xenon excimers, the second, dielectrically unimpeded discharge is a xenon low-pressure discharge which emits UV radiation, the UV radiation generated by both discharges is converted into visible light by means of one or more phosphors (2; 2 '), the brightness of the discharge lamp is regulated by generating the dielectric barrier discharge in order to set the undimmed state in the discharge lamp and generating the xenon low-pressure discharge in order to set a dimmed state in the discharge lamp. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß zum Betrieb der Entladungslampe im ungedimmten Zustand ausschließlich die dielektrische behinderte Entladung erzeugt wird, zum Verringern der Helligkeit der Entladungslampe zunächst die elektrische Leistung der dielektrisch behinderten Entladung reduziert wird, und zur weiteren Verringerung der Helligkeit der Entladungslampe die dielektrische Entladung ausgeschaltet und ausschließlich die Xenon-Niederdruckentladung erzeugt wird, wobei die elektrische Leistung der XenonNiederdruckentladung in Abhängigkeit von der gewünschten Helligkeit eingestellt wird. A method according to claim 1, characterized in that only the dielectric disabled discharge is generated to operate the discharge lamp in the undimmed state, to reduce the brightness of the discharge lamp, the electrical power of the dielectric barrier discharge is first reduced, and To further reduce the brightness of the discharge lamp, the dielectric discharge is switched off and only the low-pressure xenon discharge is generated, the electrical power of the low-pressure xenon discharge being set as a function of the desired brightness. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die dielektrisch behinderte Entladung mittels zweier Außenelektroden (5, 6), die auf der äußeren Oberfläche des Entladungsgefäßes (1) angebracht sind, erzeugt wird. A method according to claim 1, characterized in that the dielectric disabled discharge by means of two outer electrodes (5, 6) on the outer Surface of the discharge vessel (1) are attached, is generated. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die dielektrisch behinderte Entladung mittels zweier streifenförmiger Innenelektroden (5', 6'), die auf der Innenwand des Entladungsgefäßes (1) angebracht sind, erzeugt wird.A method according to claim 1, characterized in that the dielectric disabled discharge by means of two strip-shaped internal electrodes (5 ', 6'), which are attached to the inner wall of the discharge vessel (1) becomes. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Xenon-Niederdruckentladung mittels zweier, innerhalb des Entladungsgefäßes (1) angeordneter Kaltkathoden (3, 4) erzeugt wird.A method according to claim 1, characterized in that the xenon low pressure discharge by means of two arranged inside the discharge vessel (1) Cold cathodes (3, 4) is generated. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die dielektrisch behinderte Entladung mit Hilfe von Hochspannungsimpulsen erzeugt wird.A method according to claim 1, characterized in that the dielectric disabled discharge is generated with the help of high voltage pulses. Verfahren nach Anspruch 1, dadurch gekennzeichnet, daß die Xenon-Niederdruckentladung mit Hilfe von mittelfrequenten Wechselspannungen oder Hochspannungsimpulsen erzeugt wird.A method according to claim 1, characterized in that the xenon low pressure discharge with the help of medium frequency AC voltages or High voltage pulses are generated. Verfahren nach Anspruch 6 oder 7, dadurch gekennzeichnet, daß die Helligkeitsregelung durch Austasten von Impulsfolgen erfolgt.Method according to claim 6 or 7, characterized in that the brightness control by blanking pulse trains.
EP00107629A 1999-06-23 2000-04-08 Method for driving a discharge lamp Expired - Lifetime EP1063682B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19928438A DE19928438A1 (en) 1999-06-23 1999-06-23 Method for operating a discharge lamp
DE19928438 1999-06-23

Publications (2)

Publication Number Publication Date
EP1063682A1 true EP1063682A1 (en) 2000-12-27
EP1063682B1 EP1063682B1 (en) 2004-06-16

Family

ID=7912064

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00107629A Expired - Lifetime EP1063682B1 (en) 1999-06-23 2000-04-08 Method for driving a discharge lamp

Country Status (7)

Country Link
US (1) US6259214B1 (en)
EP (1) EP1063682B1 (en)
JP (1) JP4339492B2 (en)
AT (1) ATE269587T1 (en)
CA (1) CA2312132A1 (en)
DE (2) DE19928438A1 (en)
ES (1) ES2223333T3 (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10005975A1 (en) * 2000-02-09 2001-08-16 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Operating method for a discharge lamp with at least one dielectric barrier electrode
JP4190734B2 (en) * 2001-01-15 2008-12-03 ウシオ電機株式会社 Dielectric barrier discharge lamp light source device
DE10133949C1 (en) * 2001-07-17 2003-03-20 Inst Niedertemperatur Plasmaph Device for generating gas discharges, which is constructed on the principle of dielectric barrier discharge, for light sources and visual display devices
KR20030044481A (en) * 2001-11-30 2003-06-09 삼성전자주식회사 Cold cathode fluorescent tube type lamp and liquid crystal display device using the same
DE10205796C1 (en) * 2002-02-13 2003-10-30 Behr Hella Thermocontrol Gmbh Operating device for automobile heating and/or air-conditioning has display field provided by insert in front plate illuminated using non-visible electromagnetic radiation via wavelength converter
JP3996450B2 (en) * 2002-06-14 2007-10-24 Ｎｅｃライティング株式会社 Output light color variable flat type rare gas discharge lamp, lighting fixture using the same, and lighting method
JP2005216647A (en) * 2004-01-29 2005-08-11 Ushio Inc High radiance flash discharge lamp
US20050253523A1 (en) * 2004-05-14 2005-11-17 Yi-Shiuan Tsai Fluorescent lamp for backlight device
WO2007129506A1 (en) * 2006-05-09 2007-11-15 Panasonic Corporation Apparatus and method for lighting dielectric barrier discharge lamp
US8946993B2 (en) * 2008-05-15 2015-02-03 Rutgers, The State University Fluorescent excimer lamps
SI26229A (en) * 2021-07-30 2023-01-31 Piaia Raimondo Mercury free cold cathode lamp internally coated with a luminiscent down shifting layer
CN114272402B (en) * 2021-11-09 2023-05-26 郑州圣华药物食品技术开发有限公司 Technical management scheme for guaranteeing safe and effective operation of xenon excimer disinfection apparatus

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996036066A1 (en) * 1995-05-12 1996-11-14 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Discharge lamp and device for operating it
EP0765109A2 (en) * 1995-09-21 1997-03-26 Smiths Industries Public Limited Company Gas discharge lamps and systems
WO1999034411A1 (en) * 1997-12-23 1999-07-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Gas discharge lamp with separately operating electrode groups

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4311197A1 (en) * 1993-04-05 1994-10-06 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Method for operating an incoherently radiating light source
US5523655A (en) * 1994-08-31 1996-06-04 Osram Sylvania Inc. Neon fluorescent lamp and method of operating
DE19651552A1 (en) * 1996-12-11 1998-06-18 Patent Treuhand Ges Fuer Elektrische Gluehlampen Mbh Cold cathode for discharge lamps, discharge lamp with this cold cathode and mode of operation for this discharge lamp

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1996036066A1 (en) * 1995-05-12 1996-11-14 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Discharge lamp and device for operating it
EP0765109A2 (en) * 1995-09-21 1997-03-26 Smiths Industries Public Limited Company Gas discharge lamps and systems
WO1999034411A1 (en) * 1997-12-23 1999-07-08 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Gas discharge lamp with separately operating electrode groups

Also Published As

Publication number Publication date
US6259214B1 (en) 2001-07-10
JP4339492B2 (en) 2009-10-07
ES2223333T3 (en) 2005-03-01
CA2312132A1 (en) 2000-12-23
EP1063682B1 (en) 2004-06-16
DE19928438A1 (en) 2000-12-28
ATE269587T1 (en) 2004-07-15
JP2001052890A (en) 2001-02-23
DE50006799D1 (en) 2004-07-22

Similar Documents

Publication Publication Date Title
EP0922297B1 (en) Fluorescent lamp
EP0824761B1 (en) Process for operating a discharge lamp
EP0733266B1 (en) Process for operating an incoherently emitting radiation source
EP1063682B1 (en) Method for driving a discharge lamp
EP1137050A1 (en) Capacitive coupling structure for low pressure discharge lamp
DE19711183A1 (en) Method and circuit arrangement for operating at least one discharge lamp
DE4400412A1 (en) Vehicle lighting system with discharge lamp and voltage step-up circuit
EP1118100B1 (en) Dimmable discharge lamp for dielectrically impeded discharges
EP0912992B1 (en) Flat light emitter
EP1417699B1 (en) Discharge lamp with starting aid
WO2003032362A2 (en) Dielectric barrier discharge lamp and method and circuit for igniting and operating said lamp
EP1118099B1 (en) Dimmable discharge lamp for dielectrically impeded discharges
EP1276137B1 (en) Dielectric-barrier discharge lamp with starting aid
DE3723435C2 (en)
DE3920511C2 (en) ELECTRONIC POWER LAMP
EP1002450B1 (en) Method for operating a direct current metal halogen arc lamp and circuit pertaining thereto
DE19817475B4 (en) Discharge lamp with dielectric barrier electrodes and lighting system with such a discharge lamp
EP1124406B1 (en) Method of operating a dielectric barrier discharge lamp
DE112005003174B4 (en) Discharge lamp device with grounded mirror
EP1072173A1 (en) Flat lighting device and method for operating
EP0334355A2 (en) Wall-stabilized high-pressure discharge lamp

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: 20001017

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

AX Request for extension of the european patent

Free format text: AL;LT;LV;MK;RO;SI

AKX Designation fees paid

Free format text: BE ES FR GB IT NL SE

RBV Designated contracting states (corrected)

Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

GRAJ Information related to disapproval of communication of intention to grant by the applicant or resumption of examination proceedings by the epo deleted

Free format text: ORIGINAL CODE: EPIDOSDIGR1

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

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): AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FI

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040616

Ref country code: IE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040616

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REF Corresponds to:

Ref document number: 50006799

Country of ref document: DE

Date of ref document: 20040722

Kind code of ref document: P

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: GERMAN

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040916

Ref country code: DK

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20040916

REG Reference to a national code

Ref country code: SE

Ref legal event code: TRGR

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)
REG Reference to a national code

Ref country code: IE

Ref legal event code: FD4D

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2223333

Country of ref document: ES

Kind code of ref document: T3

ET Fr: translation filed
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: CY

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20050408

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050408

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050408

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

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: MC

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050430

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050430

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050430

26N No opposition filed

Effective date: 20050317

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: PT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20041116

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20090507

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20090409

Year of fee payment: 10

Ref country code: SE

Payment date: 20090407

Year of fee payment: 10

Ref country code: FR

Payment date: 20090424

Year of fee payment: 10

Ref country code: IT

Payment date: 20090428

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 20090424

Year of fee payment: 10

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20090619

Year of fee payment: 10

Ref country code: GB

Payment date: 20090409

Year of fee payment: 10

BERE Be: lapsed

Owner name: *PATENT-TREUHAND-G.- FUR ELEKTRISCHE GLUHLAMPEN M.

Effective date: 20100430

REG Reference to a national code

Ref country code: NL

Ref legal event code: V1

Effective date: 20101101

EUG Se: european patent has lapsed
GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20100408

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20101230

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20101101

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: 20101103

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100408

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100430

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100408

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20110715

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20110705

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100409

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: 20100430

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20100409