EP1920643A1 - Ballast pour une lampe a decharge a prechauffage adaptatif - Google Patents

Ballast pour une lampe a decharge a prechauffage adaptatif

Info

Publication number
EP1920643A1
EP1920643A1 EP06806735A EP06806735A EP1920643A1 EP 1920643 A1 EP1920643 A1 EP 1920643A1 EP 06806735 A EP06806735 A EP 06806735A EP 06806735 A EP06806735 A EP 06806735A EP 1920643 A1 EP1920643 A1 EP 1920643A1
Authority
EP
European Patent Office
Prior art keywords
electronic ballast
electrodes
electrode temperature
electrode
correlated
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
EP06806735A
Other languages
German (de)
English (en)
Other versions
EP1920643B1 (fr
Inventor
Olaf Busse
Markus Heckmann
Reinhard Lecheler
Alfons Lechner
Siegfried Mayer
Thomas Pollischansky
Bernd Rudolph
Bernhard Schemmel
Kay Schmidtmann
Harald Schmitt
Thomas Siegmund
Arwed Storm
Horst Werni
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 EP1920643A1 publication Critical patent/EP1920643A1/fr
Application granted granted Critical
Publication of EP1920643B1 publication Critical patent/EP1920643B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
    • H05B41/14—Circuit arrangements
    • H05B41/26—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC
    • H05B41/28—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters
    • H05B41/295—Circuit arrangements in which the lamp is fed by power derived from DC by means of a converter, e.g. by high-voltage DC using static converters with semiconductor devices and specially adapted for lamps with preheating electrodes, e.g. for fluorescent lamps

Definitions

  • the present invention relates to an electronic ballast for discharge lamps, specifically for such discharge lamps having preheatable electrodes.
  • Electronic ballasts for the operation of discharge lamps are known per se.
  • an electronic ballast from a given supply for example a mains supply, generates a supply power for a connected discharge lamp, which has the characteristics necessary for the operation of the discharge lamp, in particular a high-frequency AC voltage supply.
  • the electrodes of a discharge lamp are preheated prior to the ignition of the discharge. In this way, the emissivity of the electrodes can be improved and their service life extended.
  • a preheat process typically lasts between 0.4 s and just over 2 s and occurs after a preheat program set in a scheduler.
  • the invention is based on the problem of specifying an improved ballast for discharge lamps with preheatable electrodes.
  • the invention relates to an electronic ballast for operating a discharge lamp with preheatable electrodes, characterized in that it comprises a measuring device which is designed to repeatedly measure, during the preheating process, a size correlated to the electrode temperature of at least one of the electrodes of a connected discharge lamp and a control device which is designed to respond to the value correlated to the electrode temperature with a non-monotonous profile on the measurement to ignite the discharge.
  • the invention is based on the finding that a desired short preheating time can be achieved with the use of the largest possible preheating currents or preheating voltages, but when the voltage across an electrode of a connected discharge lamp during the preheating process exceeds a critical value, but a transverse discharge occurs can.
  • Transverse discharges are not desirable, i.a. because with a transverse discharge the electrode temperature decreases again. At lower temperatures the electrode is less emissive and igniting the discharge at too low a temperature increases the wear of the electrode.
  • Transverse discharges can be detected at such a temperature decrease of an electrode during the preheating process.
  • a decrease in temperature across an electrode can be detected by a nonmonotonic history of a value correlated to electrode temperature within the preheat time. For example, with a transverse discharge across the electrode, your resistance and the voltage drop across it also decrease. However, the current through the electrode increases due to the lower resistance. How strongly these behaviors are pronounced also depends on whether the heating power supply has more of a voltage source characteristic or a current source characteristic. Really, the properties of the heating power supply will be between these extremes.
  • the electronic ballast according to the invention has a measuring device which is designed to measure the temperature of one or both electrodes of a connected discharge lamp during the preheating process. To measure the electrode temperature, any property correlated to this can be measured. Suitable quantities are dealt with within the scope of the dependent claims.
  • the electronic ballast according to the invention has a control device which responds to the measurement of the measuring device. If there is a nonmonotonic course of a variable correlated to the electrode temperature, the control device initiates the ignition of the discharge.
  • the quantity correlated to the electrode temperature, which is used for cross-discharge detection is the voltage across one of the electrodes. If a transverse discharge occurs, the voltage over the affected electrode breaks down to a certain extent.
  • the electrode resistance during the preheating time results from the preheating voltage and the preheating current, so it is easy to determine.
  • the electronic ballast has a pronounced current source characteristic, it is more appropriate to observe the voltage across one of the electrodes for cross-discharge detection. Is the electronic ballast if a pronounced voltage source is advisable, then a transverse discharge detection via the quotient of the hot and cold resistance, which is determined by an (additional) current measurement, is recommended.
  • ignition should then be initiated, for example via the control circuit.
  • the size to be measured is the quotient of the current electrode resistance and the cold resistance.
  • the cold resistance of an electrode is understood here to mean the resistance of an electrode when its temperature corresponds to the room temperature (20 ° C.).
  • the quotient of actual electrode resistance, ie the heat resistance, and the cold resistance, as well as the electrode resistance itself, are approximately proportional to the temperature of the electrodes. Since it is divided by the cold resistance, but a normalized in this regard size is used. This is interesting because the cold resistance can vary from lamp to lamp, but does not say anything about the temperature during the preheating process.
  • the control device can be designed to carry out the determination of the quotient of the heat resistance measured by the measuring device and the cold resistance likewise measured by the measuring device.
  • the discharge is ignited. More preferably, when the discharge is fired from a lower limit of 4.5 and, independently, to an upper limit of 6.
  • Intervention of the control circuit in the preheating process is useful not only in the cases described above in the form of premature ignition of the discharge, but also in the form of an adaptation of the operating parameters of the electronic ballast in response to the measurement. device, because a simple execution of a given Voriffablaufes can lead to an unsatisfactory result of preheating, even if, as in the embodiments of the invention described above, the discharge is initiated early.
  • the preheating process may be different for each individual discharge lamp.
  • a different from lamp to lamp course of preheating can be due to manufacturing tolerances, especially the preheatable electrodes, or in ambient temperature differences.
  • the control device compares the measured values of the measuring device with standard values of the value correlated to the electrode temperature. If there is a deviation between the measured and standard values, the control device adjusts the following course of the preheating process by changing an operating parameter of the electronic ballast so that the expected deviation between a following measurement and a corresponding standard value becomes smaller. This process is therefore a regulation.
  • Examples of operating parameters of the electronic ballast which are suitable for adjusting the course of the electrode temperature during the preheating process are: the Vortexstrom through the electrodes, the Vortexschreib to the electrodes, the frequency of the electronic ballast generated high-frequency AC power supply, the duty cycle just this AC power supply and the height of the DC power supply.
  • the standard values of the value correlated to the electrode temperature can be available for comparison by the control device, these can be stored in a memory device within the electronic ballast, or else hard-wired in the form of an electronic circuit, for example a circuit, which has threshold values. (comparators) to which the measured values are fed and whose threshold values decide whether there is a deviation from the standard values.
  • a circuit which has threshold values. (comparators) to which the measured values are fed and whose threshold values decide whether there is a deviation from the standard values.
  • Such a circuit could simultaneously implement the control device as well.
  • the preferred embodiment of the electronic ballast can also have increased flexibility when using different lamp types. Although different types of lamps may have different electrodes, the control circuit can be used to effect an efficient preheating process.
  • the value correlated to the electrode temperature during the preheating process is measured at least every 100 ms. In the usual preheating so several measurements during the preheating process are possible.
  • the lamp type is determined by measuring the cold resistance of an electrode of a connected discharge lamp.
  • the memory device is designed for each lamp type a set of matching preheat parameters For example, the preheating time, default values for the heating current and the heating voltage and maximum values for heating voltage and heating current. If the electronic ballast has recognized the connected lamp type on the basis of the cold resistance, then the control device controls the preheating process in accordance with the standard values corresponding to the lamp type.
  • the electronic ballast may be equipped with a timer to determine if the mains interruption was shorter than a predetermined duration. If this is the case, then no measurement of the cold resistance is carried out after the power interruption, otherwise already.
  • the invention thus also relates in principle to a method for operating a discharge lamp equipped with preheatable electrodes, comprising the steps of: connecting the discharge lamp, repeatedly measuring a value correlated to the electrode temperature of at least one of the electrodes of a connected discharge lamp during preheating with a measuring device, igniting the discharge a non-monotonic course of the value correlated to electrode temperature by a control device which responds to the measurement, and also relates to the embodiments implicitly and subsequently also explained for this method.
  • a control device which responds to the measurement
  • FIG. 1 shows a circuit diagram of an electronic ballast according to the invention.
  • FIG. 2 shows a time course of a variable correlated to the electrode temperature.
  • FIG. 3 shows a time profile of a variable correlated to the electrode temperature and an associated heating current, which is adapted during the preheating process.
  • FIG. 4 shows a variation of FIG. 2.
  • FIG. 5 shows a further variation of FIG. 2.
  • FIG. 6 also shows a variation of FIG. 2.
  • FIG. 1 shows a circuit diagram of an electronic ballast according to the invention.
  • the electronic ballast is fed from the mains supply lines N1 and N2.
  • a generator G generates from the given mains supply N1, N2 a supply power for a connected low-pressure discharge lamp LA.
  • the generator G includes a rectifier for rectifying the AC voltage supply, a power factor correction circuit for a possible sinusoidal current drain from the mains supply, a DC link capacitor and a Halbmaschinenin- verter, wherein over the DC link capacitor for supplying the Halbmaschineninverters necessary DC voltage is applied.
  • the half-bridge inverter generates a high-frequency alternating voltage between the output A1 and the reference potential GND or the other potential of the intermediate circuit voltage.
  • a series circuit of a lamp inductor L, a coupling capacitor CC, a lamp terminal KU A, the low-pressure discharge lamp LA, a lamp terminal KL2A and a resistor R1 is connected.
  • Parallel to the series connection of the lamp terminal KL1 A, the low-pressure discharge lamp LA and the lamp terminal KL2A a series circuit of a lamp terminal KL1 B, a resonant capacitor CR and a lamp terminal KL2B is connected.
  • the electrode E1 Between the lamp terminals KL1 A and KL1 B is the electrode E1 and between the lamp terminals KL2A and KL2B is the electrode E2.
  • connection node K1 Between the lamp terminal KL2A and the resistor R1 is a connection node K1. Between a second output at the generator A2 and the connection node K1, a control device C and a measuring device M is connected.
  • the control device C and the measuring device M are part of a microcontroller, and are therefore drawn with a common enclosure. Both the control device C and the measuring device M have a reference to the reference potential GND.
  • the control device C can set operating parameters of the generator G via a control line SL, here the heating current.
  • the measuring device is connected via the node K1 in series with the reference potential GND. Furthermore, the measuring device M is connected in series with the resonance capacitor CR via the lamp terminal KL2B. Between the resonant capacitor CR and the measuring device M is a connection node K2. At this connection node, the lamp terminal KL2B is connected.
  • the voltage dropped across the resistor R1 is proportional to that through the electrode E2 between the lamp terminals KL2A and KL2B flowing electricity.
  • the voltage across the resistor R1 can be detected by the measuring device M.
  • the voltage between the lamp terminals KL2A and KL2B can also be detected by the measuring device M.
  • FIG. 2 shows a typical course of a variable correlated to the electrode temperature of the low-pressure discharge lamp LA during the preheating process.
  • the measuring device M measures, here 10 times, the resistance RW of the electrode E2 between the lamp terminals KL2A and KL2B during the preheating time.
  • the preheating process starts at time t ⁇ and ends at time t1.
  • the resistance RW of the electrode also increases and reaches its highest value until the end of t1 of the preheating time, here after 0.5 s.
  • the electrode resistance has the value RK, its cold resistance.
  • the quotient of RW and RK is shown as a function of time, which reaches the value 5 at the end t1 of the preheating time, which corresponds to an electrode temperature of almost 800 ° C.
  • Figure 3a shows a time course of the quotient of hot and cold resistance and Figure 3b shows the associated heating current IE2, the heating current through electrode 2, which is adjusted during the preheating process.
  • the control device C five standard values for the quotient of hot and cold resistance and the heating current appearing in the course of the preheating process are stored for different lamp types.
  • the measuring device M determines the cold resistance of the electrode E2. Based on the cold resistance RK of the electrode E2, the lamp type is detected and the standard values corresponding to the detected lamp type are selected as a comparison scale for the control device C for the preheating process.
  • the crosses in FIGS. 3a and 3b respectively correspond to the standard values stored in the control device.
  • the solid line in Figure 3a corresponds to the actual course of the Quotient of hot and cold resistance and the solid line in Figure 3b corresponds to the actual course of the heating current during the preheating time.
  • the controller adapts and increases the heating current so that the quotient of hot and cold resistance has a greater slope.
  • the heating current change is here proportional to the difference between the measured quotient of the hot and cold resistance and the associated standard value.
  • FIG. 4 shows the quotient of RW and RK as a function of time during the preheating process for two different preheating operations.
  • first preheating process dashe-dashed line
  • second preheating process solid line
  • the quotient reaches the value 5 before the expected end t1 of the preheating time.
  • the electrode is hot enough and the discharge is ignited.
  • the initially increased temperature of the electrode drops again. This is shown in FIG. 5 and is also expressed in that the quotient of the current electrode resistance RW and the cold resistance RK decreases.
  • the measuring device M here makes ten measurements of the electrode resistance RW in the interval between t0 and t1. If the electrode resistance falls within this interval after it has risen first, this is an indication of a transverse discharge; the discharge is ignited.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)

Abstract

La présente invention concerne un ballast électronique pour des lampes à décharge présentant des électrodes à préchauffage. Ce ballast électronique présente un dispositif de mesure (M) conçu pour mesurer à plusieurs reprises, pendant le processus de préchauffage, une grandeur (RW, UKL2) d'au moins une des électrodes (E1, E2) d'une lampe à décharge raccordée (LA), laquelle grandeur est en corrélation avec la température de l'électrode. Ledit ballast électronique présente également un dispositif de commande (C) conçu pour amorcer la décharge en réponse à la mesure, en cas de variation non monotone de la grandeur (RW, UKL2) en corrélation avec la température de l'électrode. De plus, un mode de réalisation de ladite invention peut intervenir dans le processus de préchauffage de manière appropriée au moyen du dispositif de commande (C).
EP06806735A 2005-08-31 2006-08-30 Ballast pour une lampe a decharge a prechauffage adaptatif Not-in-force EP1920643B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200520013753 DE202005013753U1 (de) 2005-08-31 2005-08-31 Vorschaltgerät für eine Entladungslampe mit adaptiver Vorheizung
PCT/EP2006/065811 WO2007025983A1 (fr) 2005-08-31 2006-08-30 Ballast pour une lampe a decharge a prechauffage adaptatif

Publications (2)

Publication Number Publication Date
EP1920643A1 true EP1920643A1 (fr) 2008-05-14
EP1920643B1 EP1920643B1 (fr) 2009-08-19

Family

ID=35433670

Family Applications (1)

Application Number Title Priority Date Filing Date
EP06806735A Not-in-force EP1920643B1 (fr) 2005-08-31 2006-08-30 Ballast pour une lampe a decharge a prechauffage adaptatif

Country Status (5)

Country Link
EP (1) EP1920643B1 (fr)
JP (1) JP2009506510A (fr)
CN (1) CN101253817A (fr)
DE (2) DE202005013753U1 (fr)
WO (1) WO2007025983A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010511969A (ja) * 2006-07-31 2010-04-15 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ 放電ランプの電極加熱のための方法及び回路
US7560867B2 (en) * 2006-10-17 2009-07-14 Access Business Group International, Llc Starter for a gas discharge light source
DE102008012452A1 (de) * 2008-03-04 2009-09-10 Tridonicatco Gmbh & Co. Kg Schaltung zum Beheizen und Überwachen der Heizwendeln mindestens einer mit einem elektronischen Vorschaltgerät betriebenen Gasentladungslampe auf Wendelbruch

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0266894A (ja) * 1988-08-31 1990-03-06 Toshiba Lighting & Technol Corp 低圧水銀蒸気放電灯の点灯方法およびその装置
DE59209173D1 (de) * 1992-10-28 1998-03-05 Knobel Lichttech Verfahren und Schaltungsanordnung zum Zünden von Leuchtstofflampen bei vorbestimmter Temperatur der Lampenkathoden
US5424611A (en) * 1993-12-22 1995-06-13 At&T Corp. Method for pre-heating a gas-discharge lamp
JPH10340791A (ja) * 1997-06-06 1998-12-22 Tec Corp 放電灯点灯装置
US6140772A (en) * 1999-07-26 2000-10-31 Rockwell Collins, Inc. Method and apparatus for control of fluorescent lamps
DE19956391A1 (de) * 1999-11-24 2001-05-31 Nobile Ag Verfahren und Vorschaltgerät zum Starten und Betreiben einer Leuchtstofflampe
JP3801034B2 (ja) * 2001-11-30 2006-07-26 松下電工株式会社 放電灯点灯装置

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2007025983A1 *

Also Published As

Publication number Publication date
DE502006004609D1 (de) 2009-10-01
WO2007025983A1 (fr) 2007-03-08
CN101253817A (zh) 2008-08-27
DE202005013753U1 (de) 2005-11-17
JP2009506510A (ja) 2009-02-12
EP1920643B1 (fr) 2009-08-19

Similar Documents

Publication Publication Date Title
EP1103165B1 (fr) Ballast electronique destine a au moins une lampe a decharge basse tension
EP1920642B1 (fr) Ballast pour une lampe a decharge a prechauffage adaptatif
EP0965251A1 (fr) Procede et dispositif pour reguler le fonctionnement des lampes a decharge gazeuse
WO2010000349A1 (fr) Détection du type d'une lampe à décharge gazeuse connectée à un appareil de service
EP1920643B1 (fr) Ballast pour une lampe a decharge a prechauffage adaptatif
AT517953B1 (de) Beleuchtungssystem und verfahren zum prüfen, ob mindestens zwei mit einem evg zu betreibende gasentladungslampen vom gleichen typ sind
DE102009019625B4 (de) Verfahren zum Ermitteln eines Typs einer Gasentladungslampe und elektronisches Vorschaltgerät zum Betreiben von mindestens zwei unterschiedlichen Typen von Gasentladungslampen
EP2248395A1 (fr) Identification du type d'une lampe à décharge destinée à fonctionner avec un ballast électronique
EP2208403A1 (fr) Appareil de commande pour commander le processus d'amorçage d'une lampe
DE10328718A1 (de) Verfahren zum Betrieb mindestens einer Niederdruckentladungslampe und Betriebsgerät für mindestens eine Niederdruckentladungslampe
EP1424881B1 (fr) Dispositif et méthode pour commander une lampe fluorescente
EP2198672B1 (fr) Procédé pour déterminer des paramètres de fonctionnement d'une lampe à décharge de gaz fonctionnant avec un ballast électronique, et ballast correspondant
EP2132965B1 (fr) Circuit pour le chauffage d'un filament
EP1992203B1 (fr) Ballasst électronique et procédé de fonctionnement d'une lampe électrique
DE102006031341A1 (de) Elektronisches Lampenvorschaltgerät zur Regelung von Betriebsparametern einer HF-betriebenen Leuchtstofflampe
DE102010063933A1 (de) Betriebsgerät und Verfahren zum Betrieb von Gasentladungslampen
EP2335457B1 (fr) Determination du type de lampe et topologie du circuit pour plusieurs lampes
EP2380408A1 (fr) Circuit de détection et procédé pour commander un tube fluorescent
DE102024114763A1 (de) Schaltungsanordnung, Verfahren zum Betreiben der Schaltungsanordnung, Computerprogrammprodukt, Heizgerät und Verwendung der Schaltungsanordnung
EP1793655B1 (fr) Ballast électronique avec dispositif de surveillance de l'état de fonctionnement
WO2009059643A1 (fr) Ballast électronique et procédé pour faire fonctionner au moins une première et une deuxième lampes à décharge
DE102009004852A1 (de) Detektorschaltung und Verfahren zur Ansteuerung einer Leuchtstofflampe
DE102008012454A1 (de) Verfahren zum Bestimmen von Betriebsparametern einer mit einem elektronischen Vorschaltgerät zu betreibenden Gasentladungslampe sowie ein entsprechendes Vorschaltgerät
WO2013034386A1 (fr) Ballast électronique et procédé pour faire fonctionner une lampe à décharge
DE102009016906A1 (de) Elektronisches Vorschaltgerät zum Betreiben von mindestens zwei unterschiedlichen Typen von Entladungslampen

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: 20080125

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

DAX Request for extension of the european patent (deleted)
RBV Designated contracting states (corrected)

Designated state(s): DE FR GB IT

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 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: 502006004609

Country of ref document: DE

Date of ref document: 20091001

Kind code of ref document: P

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: 20100520

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 502006004609

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: 502006004609

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: 502006004609

Country of ref document: DE

Owner name: OSRAM GMBH, DE

Free format text: FORMER OWNER: OSRAM GMBH, 81543 MUENCHEN, DE

Effective date: 20130823

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

Ref country code: DE

Payment date: 20140821

Year of fee payment: 9

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

Ref country code: FR

Payment date: 20140821

Year of fee payment: 9

Ref country code: GB

Payment date: 20140820

Year of fee payment: 9

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

Ref country code: IT

Payment date: 20140822

Year of fee payment: 9

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502006004609

Country of ref document: DE

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 20150830

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: 20150830

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20160429

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: 20160301

Ref country code: GB

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

Effective date: 20150830

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: 20150831