EP0808085A2 - Alimentation à haute fréquence pour une lampe à décharge basse pression avec une compatibilité électromagnétique accrue - Google Patents

Alimentation à haute fréquence pour une lampe à décharge basse pression avec une compatibilité électromagnétique accrue Download PDF

Info

Publication number
EP0808085A2
EP0808085A2 EP97107207A EP97107207A EP0808085A2 EP 0808085 A2 EP0808085 A2 EP 0808085A2 EP 97107207 A EP97107207 A EP 97107207A EP 97107207 A EP97107207 A EP 97107207A EP 0808085 A2 EP0808085 A2 EP 0808085A2
Authority
EP
European Patent Office
Prior art keywords
capacitor
push
frequency generator
lamp
pump
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
EP97107207A
Other languages
German (de)
English (en)
Other versions
EP0808085B1 (fr
EP0808085A3 (fr
Inventor
Felix Dr. Franck
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 EP0808085A2 publication Critical patent/EP0808085A2/fr
Publication of EP0808085A3 publication Critical patent/EP0808085A3/fr
Application granted granted Critical
Publication of EP0808085B1 publication Critical patent/EP0808085B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

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
    • 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
    • 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
    • H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
    • H05B45/30—Driver circuits
    • H05B45/355—Power factor correction [PFC]; Reactive power compensation

Definitions

  • the present invention relates to an operating circuit for one or more lamps, in particular low-pressure discharge lamps, which are to be operated with high-frequency power.
  • the high-frequency operation of low-pressure discharge lamps has the advantage of a significant increase in the efficiency of the lamp in addition to the avoidance of a line-frequency modulation of the emitted light during line operation.
  • CH Sturm and E. Klein “Operating Devices and Circuits for Electric Lamps", 6th edition 1992, Siemens AG, especially pages 121 to 137, and W. Hirschmann “Electronic Circuits", 1982, Siemens AG, pages 147 and 148.
  • the invention is based on a circuit for high-frequency operation of at least one lamp according to the preamble of claims 1 and 2.
  • this circuit from the prior art has a resonance capacitor for lamp ignition, which is connected directly in parallel with the lamp, and a capacitor connected between the center tap of the push-pull frequency generator and the center tap between the diodes of one of the pump branches (referred to there as C6 or C7 ).
  • C6 or C7 shows the corresponding circuit structure, the capacitors above being designated C6 and CT2 there.
  • the name of the rest Components corresponds to the reference numerals in the preamble of claim 1.
  • Electronic ballasts for lamps operated with high frequency generally show high-frequency feedback on the network (in network operation) or another voltage source and high-frequency electromagnetic radiation.
  • the sensitivity of other electronic devices and the growing density of such devices in the immediate operating environment of electronic ballasts for lamps place ever increasing demands on the electromagnetic compatibility of an electronic ballast as a potential high-frequency interference source.
  • C.H. Sturm and E. Klein op. Cit., P.122 ff).
  • the invention is based on the technical problem of further improving the operating properties of the circuit from the prior art, taking particular account of the electromagnetic compatibility.
  • a trapezoidal capacitor connected behind the pump capacitor, as described above, has the advantage that the push-pull frequency generator is capacitively loaded instead of a parallel connection with a series connection of pump capacitor and trapezoidal capacitor.
  • the switching relief of the transistors of the push-pull frequency generator is in fact more difficult to achieve the larger the capacitance connected directly to its center tap.
  • the push-pull frequency generator is only capacitively overloaded when the capacitors have larger capacitance values.
  • the advantage therefore lies in the fact that the pump capacitor can be chosen larger in favor of the pumping power of the pump branch and the trapezoidal capacitor. Since the pump branch of the harmonic filter improves the sinusoidal shape of the mains current consumption during mains operation, the first point also benefits from electromagnetic compatibility.
  • the trapezoidal capacitor connected according to the invention can be used to close a capacitive path parallel to the lamp for lamp ignition by means of resonance voltage amplitudes, so that the conventional lamp-parallel resonant capacitor can be dispensed with. This results in a significant reduction the current load of the push-pull frequency generator around the high-frequency current through the former resonance capacitor.
  • trapezoidal capacitor used here has become established in this technical field and refers to a generally relatively small capacitor which is used for the temporal "damping" of recharging and potential jump processes, which without it is relatively “hard”, i.e. would run with very steep potential-time edges, but get a beveled, trapezoidal potential-time shape through the trapezoidal capacitor.
  • the circuit according to the invention finds an advantageous and important field of application in high-frequency discharge lamps and in particular in low-pressure discharge lamps.
  • the electronic ballasts on which the invention is based are usually operated via a mains rectifier on the AC mains.
  • the pump branch has a series connection of two diodes between the DC voltage source and an external tap of the push-pull frequency generator, the forward direction of the diodes corresponding to the direct voltage source polarity. It connects a center tap between the two diodes via the pump capacitor to a point between a resonance inductance - as usual - connected to the center tap of the push-pull frequency generator and the connection of the first lamp electrode.
  • a trapezoidal capacitor is assigned to this pump branch, which can be connected on the pump branch side to the center tap between the diodes.
  • a pump branch in turn has a series connection of two diodes between the DC voltage source and an external tap of the push-pull frequency generator with the forward direction of the diodes corresponding to the DC voltage source polarity, but connects a center tap between the two diodes via the pump capacitor directly to the center tap of the push-pull frequency generator.
  • a trapezoidal capacitor is assigned to this pump branch according to the invention, which can be connected on the pump branch side to the center tap between the diodes.
  • a circuit according to the invention can have two or more pump branches, a trapezoidal capacitor being provided for part or all of the pump branches.
  • a typical dimensioning for the capacitance of the trapezoidal capacitor or capacitors can in each case be one fifth to one twentieth, or approximately one tenth of the capacitance of the respective capacitor or capacitors in the corresponding pump branches.
  • Fig. 1 shows a schematic circuit diagram of a circuit forming the preamble of claims 1 and 2 from the prior art.
  • Fig. 2 shows the embodiment.
  • a line rectifier represented by the diode bridge is shown as the DC voltage source.
  • a rectified voltage which is modulated through at 100 Hz is present at the supporting capacitor C3, generally any voltage with a DC voltage component.
  • the rectified voltage is supplied via diodes D1 to D4 belonging to a harmonic filter described below and via the smoothing capacitor C4 connected between the positive and negative lines located above in the figures, a half bridge made of two bipolar transistors T1 and T2. Together with a control transformer (not shown) for controlling the bases of T1 and T2, a push-pull frequency generator is formed which, to put it graphically, alternately pushes the potential of the center tap between the transistors to the potential of the plus and that of the minus line.
  • a control transformer not shown
  • the control transformer is described in the documents cited at the outset, in particular also by CH Sturm and E. Klein and W. Hirschmann, and essentially consists of a primary winding in series with a resonance inductor L1 and two connected to the center tap between the transistors T1 and T2 Secondary windings wound in opposite directions to one another in the drive circuits to the bases of the transistors.
  • the saturation inductance is designed so that there are short switching pauses between the line periods of the two transistors T1 and T2.
  • the starting circuit essentially consists of a capacitor which discharges through the forward voltage of a DIAC into one of the transistor bases and is also described in the cited documents.
  • the transistors are each provided with free-wheeling diodes parallel to the switching path to clear the space charges in the transistors in the off state.
  • a series circuit made up of the resonance inductance L1, a low-pressure discharge lamp, i.e. their discharge path, and a coupling capacitor C5 for DC separation.
  • a pump capacitor C1 is connected between a center tap of the diode series circuit composed of D1 and D2 on the one hand and a connection point between the resonance inductance L1 and the corresponding connection of the lamp, thus forming a first pump branch of a harmonic filter.
  • a second pump branch is formed from the diodes D3 and D4 and the pump capacitor C2 connected between their center tap and the center tap of the push-pull frequency generator.
  • the pump branch D1, D2, C1 taps a high-frequency potential between L1 and the lamp, carries out a conversion into a pump current via the capacitor C1 and supplements the voltage U G to the voltage E with this current rectified by the diodes D1 and D2 of the other pump branches D3, D4, C2 using the potential at the center tap of the transistor bridge.
  • This harmonic filter with the branches D1, D2, C1 and D3, D4, C2 is to generate a voltage E which is as smooth as possible with respect to the voltage U G at the supporting capacitor C3, and at the same time a sinusoidal mains current consumption of the mains rectifier by returning energy to the smoothing capacitor C4 ensure.
  • the electromagnetic compatibility should not only be optimized with regard to the feedback into the DC voltage source, in this case via the rectifier circuit in the network, but also with regard to the electromagnetic radiation. For further details, reference is made to the cited documents, in particular EP 0 253 224 B1.
  • the lower connection of the capacitor CT2 is shifted, so to speak, behind the pump capacitor C2, so that the capacitor in FIG. 2 lies between the center tap between D3 and D4 on the one hand and the upper positive line, that is the upper external tap of the push-pull frequency generator on the other hand. It therefore forms in series with C2 a trapezoidal capacitor for the push-pull frequency generator and also a trapezoidal capacitor for the pump branch D3, D4, C2.
  • the lamp-parallel resonance capacitor also provided in the prior art mentioned and designated there and in FIG. 1 with C6 is moved according to the invention in the same way behind a pump capacitor, namely behind that of the other pump branch, C1. There it is shown in FIG. 2 and labeled CT1.

Landscapes

  • Circuit Arrangements For Discharge Lamps (AREA)
EP97107207A 1996-05-15 1997-04-30 Alimentation à haute fréquence pour une lampe à décharge basse pression avec une compatibilité électromagnétique accrue Expired - Lifetime EP0808085B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19619581 1996-05-15
DE19619581A DE19619581A1 (de) 1996-05-15 1996-05-15 Hochfrequenzbetriebsschaltung für eine Niederdruckentladungslampe mit verbesserter elektromagnetischer Verträglichkeit

Publications (3)

Publication Number Publication Date
EP0808085A2 true EP0808085A2 (fr) 1997-11-19
EP0808085A3 EP0808085A3 (fr) 1998-11-18
EP0808085B1 EP0808085B1 (fr) 2001-11-21

Family

ID=7794388

Family Applications (1)

Application Number Title Priority Date Filing Date
EP97107207A Expired - Lifetime EP0808085B1 (fr) 1996-05-15 1997-04-30 Alimentation à haute fréquence pour une lampe à décharge basse pression avec une compatibilité électromagnétique accrue

Country Status (4)

Country Link
US (1) US5880564A (fr)
EP (1) EP0808085B1 (fr)
CA (1) CA2205344C (fr)
DE (2) DE19619581A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998058526A1 (fr) * 1997-06-18 1998-12-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Bobine d'inductance support de pompage
RU194944U1 (ru) * 2019-08-29 2019-12-30 Федеральное государственное бюджетное учреждение "Петербургский институт ядерной физики им. Б.П. Константинова Национального исследовательского центра "Курчатовский институт" (НИЦ "Курчатовский институт" - ПИЯФ) Ключевой двухтактный генератор гармонических колебаний

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1296492B1 (it) 1997-11-21 1999-06-25 Whirlpool Co Sistema per indicare il calore residuo delle griglie di apparecchi domestici di cottura a gas
US6137234A (en) * 1999-10-18 2000-10-24 U.S. Philips Corporation Circuit arrangement
US6356034B1 (en) 2000-03-22 2002-03-12 Regal King Manufacturing Limited Low voltage discharge lamp power supply
CN1190110C (zh) * 2001-04-03 2005-02-16 马士科技有限公司 荧光灯的电子镇流器的输出电路
US7002301B2 (en) * 2003-10-15 2006-02-21 Lutron Electronics Co., Inc. Apparatus and methods for making capacitive measurements of cathode fall in fluorescent lamps
TWI281364B (en) * 2004-07-28 2007-05-11 Delta Electronics Inc Electronic ballast
DE102004045514A1 (de) * 2004-09-20 2006-03-30 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Schaltungsanordnung zum Betrieb mindestens einer Lichtquelle
US7863827B2 (en) * 2008-05-23 2011-01-04 Osram Sylvania Inc. Ceramic metal halide lamp bi-modal power regulation control
CN101466191B (zh) * 2009-01-08 2012-07-04 王家诚 大功率并联自激式无极荧光灯高频电子变频器
CN103491694B (zh) * 2013-08-27 2016-03-09 钟海停 荧光灯节能专用模块

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0253224A2 (fr) * 1986-07-14 1988-01-20 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Disposition de circuit pour la mise en oeuvre de lampes à décharge basse-pression
WO1996007297A2 (fr) * 1994-08-22 1996-03-07 Philips Electronics N.V. Configuration de circuit pour lampe a decharge comprenant un convertisseur de courant continu en courant alternatif et un circuit de resonance

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0253224A2 (fr) * 1986-07-14 1988-01-20 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Disposition de circuit pour la mise en oeuvre de lampes à décharge basse-pression
WO1996007297A2 (fr) * 1994-08-22 1996-03-07 Philips Electronics N.V. Configuration de circuit pour lampe a decharge comprenant un convertisseur de courant continu en courant alternatif et un circuit de resonance

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1998058526A1 (fr) * 1997-06-18 1998-12-23 Patent-Treuhand-Gesellschaft für elektrische Glühlampen mbH Bobine d'inductance support de pompage
US6091207A (en) * 1997-06-18 2000-07-18 Patent-Treuhand-Gesellschaft Fuer Elektrische Gluelampen Mbh Pump support choke
RU194944U1 (ru) * 2019-08-29 2019-12-30 Федеральное государственное бюджетное учреждение "Петербургский институт ядерной физики им. Б.П. Константинова Национального исследовательского центра "Курчатовский институт" (НИЦ "Курчатовский институт" - ПИЯФ) Ключевой двухтактный генератор гармонических колебаний

Also Published As

Publication number Publication date
CA2205344C (fr) 2004-09-28
DE19619581A1 (de) 1997-11-20
US5880564A (en) 1999-03-09
DE59705440D1 (de) 2002-01-03
EP0808085B1 (fr) 2001-11-21
EP0808085A3 (fr) 1998-11-18
CA2205344A1 (fr) 1997-11-15

Similar Documents

Publication Publication Date Title
EP0253224B1 (fr) Disposition de circuit pour la mise en oeuvre de lampes à décharge basse-pression
DE69117008T2 (de) Wechselrichteranordnung
EP0244644B1 (fr) Disposition de circuit pour lampes à décharge basse pression travaillant en haute fréquence
EP0781077A2 (fr) Circuit pour alimenter une lampe
EP0808085B1 (fr) Alimentation à haute fréquence pour une lampe à décharge basse pression avec une compatibilité électromagnétique accrue
EP0356818A2 (fr) Circuit alimentant une charge
EP0372303A1 (fr) Circuit pour le fonctionnement d'une lampe de décharge à basse pression
DE19926642A1 (de) Schaltkreis zur Leistungsfaktorverbesserung
DE10056022A1 (de) AC-Dc-Wandler
EP1589645A2 (fr) Circuit pour convertir une tension alternative en tension continue
EP2168229A1 (fr) Ensemble circuit pourvu d'un transformateur de tension et procédé correspondant
EP1485982B1 (fr) Circuit de correction du facteur de puissance electrique
EP0135968A1 (fr) Convertisseur de tension alternative
EP0707436B1 (fr) Circuit pour alimenter des lampes à incandescence
EP1615476A2 (fr) Convertisseur en pont complet pour alimenter une lampe à décharge, avec moyens pour décharger les interrupteurs dudit pont complet
DE19781010B4 (de) Stromversorgungsvorrichtung
EP0276460A1 (fr) Disposition de circuit pour mettre en oeuvre une lampe à décharge basse pression
DE69313256T2 (de) Ballastschaltung
DE10138751B4 (de) Wechselrichter mit schnellschaltenden ansteuerbaren elektronischen Schaltern, insbesondere IGBT-Schaltern, sowie Verfahren zur Ansteuerung eines derartigen Wechselrichters
EP0263936B1 (fr) Alimentation de puissance à commutation sur le circuit secondaire
DE3519414C2 (de) Transistorwechselrichterschaltung
EP0855849B1 (fr) Transformateur électronique
AT405228B (de) Netzgleichrichterschaltung
EP0952759B1 (fr) Transformateur électronique
DE10012362B4 (de) Elektronischer Transformator und Verfahren zum Betrieb mindestens einer Lampe

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

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): BE DE FR GB IT NL

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): BE DE FR GB IT NL

17P Request for examination filed

Effective date: 19981204

17Q First examination report despatched

Effective date: 19990201

RIC1 Information provided on ipc code assigned before grant

Free format text: 7H 05B 41/28 A, 7H 02M 1/12 B

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAG Despatch of communication of intention to grant

Free format text: ORIGINAL CODE: EPIDOS AGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAH Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOS IGRA

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): BE DE FR GB IT NL

REG Reference to a national code

Ref country code: GB

Ref legal event code: IF02

REF Corresponds to:

Ref document number: 59705440

Country of ref document: DE

Date of ref document: 20020103

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 20020125

ET Fr: translation filed
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
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 20060404

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: 20060419

Year of fee payment: 10

BERE Be: lapsed

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

Effective date: 20070430

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20071101

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: 20071101

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

Ref country code: BE

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

Effective date: 20070430

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

Ref country code: FR

Payment date: 20110427

Year of fee payment: 15

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

Ref country code: GB

Payment date: 20110414

Year of fee payment: 15

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

Ref country code: IT

Payment date: 20110422

Year of fee payment: 15

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 59705440

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: 20111130

REG Reference to a national code

Ref country code: DE

Ref legal event code: R084

Ref document number: 59705440

Country of ref document: DE

Effective date: 20120423

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

Effective date: 20120430

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST

Effective date: 20121228

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

Ref country code: GB

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

Effective date: 20120430

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: 20120430

Ref country code: IT

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

Effective date: 20120430

REG Reference to a national code

Ref country code: DE

Ref legal event code: R081

Ref document number: 59705440

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: 59705440

Country of ref document: DE

Owner name: OSRAM GMBH, DE

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

Effective date: 20130822

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

Ref country code: DE

Payment date: 20150421

Year of fee payment: 19

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 59705440

Country of ref document: DE

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: 20161101