EP1610059A2 - LED device with a variable beam spreading angle - Google Patents

LED device with a variable beam spreading angle Download PDF

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Publication number
EP1610059A2
EP1610059A2 EP05013533A EP05013533A EP1610059A2 EP 1610059 A2 EP1610059 A2 EP 1610059A2 EP 05013533 A EP05013533 A EP 05013533A EP 05013533 A EP05013533 A EP 05013533A EP 1610059 A2 EP1610059 A2 EP 1610059A2
Authority
EP
European Patent Office
Prior art keywords
led device
leds
elastic support
led
spot position
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05013533A
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German (de)
French (fr)
Other versions
EP1610059A3 (en
Inventor
Dedo Weigert
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.)
Dedo Weigert Film GmbH
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Dedo Weigert Film GmbH
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 Dedo Weigert Film GmbH filed Critical Dedo Weigert Film GmbH
Publication of EP1610059A2 publication Critical patent/EP1610059A2/en
Publication of EP1610059A3 publication Critical patent/EP1610059A3/en
Withdrawn legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V14/00—Controlling the distribution of the light emitted by adjustment of elements
    • F21V14/02—Controlling the distribution of the light emitted by adjustment of elements by movement of light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/02—Fastening of light sources or lamp holders with provision for adjustment, e.g. for focusing
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2107/00—Light sources with three-dimensionally disposed light-generating elements
    • F21Y2107/70—Light sources with three-dimensionally disposed light-generating elements on flexible or deformable supports or substrates, e.g. for changing the light source into a desired form
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the illustrated in the figures embodiment of the LED device according to the invention 1 has 81 LEDs 2, which are relatively densely packed in a stable but in both Surface directions stretchable rubber layer 3 are embedded. This is in Figs. 1 and 3 for the spot position of the embodiment of the LED device 1 according to the invention shown.
  • the 81 LEDs 2 provide a lamp with approximately circular Periphery, as can be seen from Fig. 3.
  • the rubber pad 3 serves as elastic support for the LEDs 2.
  • the rubber base 3 with the LEDs 2 embedded therein is clamped in a frame 5.
  • This frame 5 also receives a mushroom-shaped punch 4, which of the radiation direction the LEDs 2 side facing away by means of a wing nut 6 against the rubber pad 3 can be pressed (see Fig. 2).
  • each LED 2 is approximately 10 °.
  • the LEDs 2 are arranged so close together that their individual light cone already very close strongly overlap at the LED device 1 and to a total cone of relatively high light intensity add. This is shown in Fig. 4.
  • the radiation angle of the total light cone is in spot position about 10 °.
  • the punch 4 by means of the thumbscrew 6 from below (see Fig. 2) against the rubber pad 3, the rubber pad 3 begins to buckle. This leads to to the fact that the LEDs 2 no longer radiate all in the same direction.
  • the beam angle of the total light cone increases.
  • it is illuminated on a surface unit attributable proportion of the embodiment of the LED device according to the invention 1 emitted light compared with the proportion in spot position less, i. the light intensity decreases.
  • the reason for this is that the light cone of each LEDs 2 no longer overlap as much as they do in the spot position.
  • Embodiment of the LED device 1 according to the invention reaches its flooding position.
  • the flood position the superimposition of the light cone of the individual LEDs 2 is largely eliminated and by a simple, i. non - overlapping, spatial complement of the single LED light cone replaced. This is illustrated schematically in FIG. 5.
  • Fig. 7 shows a corresponding comparison the emission angle of the total light cone of the embodiment of the invention LED device 1 in spot position and in flood position.
  • LED device acts as an elastic support the rubber base 3.
  • the elastic backing is not necessarily made of rubber must exist. Rather, any other elastically deformable material is suitable for this purpose.

Abstract

A light-emitting diode (LED) device (1) comprises many LEDs (2) mounted on an elastic carrier (3) and a device (4) to deform the carrier such that the angle of the radiation cone is adjusted.

Description

Die Erfindung betrifft eine LED-Vorrichtung.
   Beleuchtungsvorrichtungen auf der Basis von Lichtemitterdioden (LED) sind aus dem Stand der Technik bekannt. Nachteilig bei diesen ist jedoch, daß sie keinen veränderlichen Abstrahlwinkel aufweisen.
   Der Erfindung liegt daher die Aufgabe zugrunde, eine LED-Vorrichtung mit einem veränderlichen Abstrahlwinkel bereitzustellen.
   Erfindungsgemäß wird diese Aufgabe gelöst durch eine LED-Vorrichtung nach Anspruch 1.
   Vorteilhafte und bevorzugte Ausführungsformen der erfindungsgemäßen LED-Vorrichtung sind Gegenstand der Ansprüche 2 bis 16.
   Ein vorteilhaftes und bevorzugtes Ausführungsbeispiel der erfindungsgemäßen LED-Vorrichtung wird nachfolgend anhand von Figuren erläutert. Es zeigt:

Fig. 1
schematisch eine Seitenansicht eines Ausführungsbeispiels der erfindungsgemäßen LED-Vorrichtung in Spotstellung,
Fig. 2
schematisch die Seitenansicht des Ausführungsbeispiels von Fig. 2 in Flutstellung,
Fig. 3
schematisch eine Draufsicht auf das Ausführungsbeispiel der erfindungsgemäßen LED-Vorrichtung in Spotstellung,
Fig. 4
schematisch eine Seitenansicht des Strahlenganges des Ausführungsbeispiels der er- findungsgemäßen LED-Vorrichtung in Spotstellung,
Fig. 5
schematisch die Seitenansicht des Strahlenganges des Ausführungsbeispiels der erfin- dungsgemäßen LED-Vorrichtung in Flutstellung,
Fig. 6
schematisch eine Gegenüberstellung des Verhaltens der Lichtkegel der einzelnen LEDs in Spotstellung und Flutstellung des Ausführungsbeispiels der erfindungsgemä- ßen LED-Vorrichtung und
Fig. 7
schematisch die Abstrahlwinkel des Gesamtlichtkegels des Ausführungsbeispiels der erfindungsgemäßen LED-Vorrichtung in Spotstellung und in Flutstellung.
The invention relates to an LED device.
Illumination devices based on light emitting diodes (LED) are known from the prior art. The disadvantage of these, however, is that they do not have a variable radiation angle.
The invention is therefore based on the object to provide an LED device with a variable radiation angle.
According to the invention this object is achieved by an LED device according to claim 1.
Advantageous and preferred embodiments of the LED device according to the invention are the subject matter of claims 2 to 16.
An advantageous and preferred embodiment of the LED device according to the invention is explained below with reference to figures. It shows:
Fig. 1
schematically a side view of an embodiment of the LED device according to the invention in spot position,
Fig. 2
schematically the side view of the embodiment of FIG. 2 in flooded position,
Fig. 3
schematically a top view of the embodiment of the LED device according to the invention in spot position,
Fig. 4
FIG. 2 schematically a side view of the beam path of the exemplary embodiment of the LED device according to the invention in the spot position; FIG.
Fig. 5
FIG. 2 shows schematically the side view of the beam path of the exemplary embodiment of the LED device according to the invention in the flooded position, FIG.
Fig. 6
schematically a comparison of the behavior of the light cone of the individual LEDs in the spot position and flood position of the embodiment of the inventive LED device and
Fig. 7
schematically the emission angle of the total light cone of the embodiment of the LED device according to the invention in spot position and in flood position.

Das in den Figuren dargestellte Ausführungsbeispiel der erfindungsgemäßen LED-Vorrichtung 1 weist 81 LEDs 2 auf, die relativ dicht gepackt in eine stabile, jedoch in beide Flächenrichtungen dehnbare Kautschukunterlage 3 eingelassen sind. Dies ist in den Fig. 1 und 3 für die Spotstellung des Ausführungsbeispiels der erfindungsgemäßen LED-Vorrichtung 1 dargestellt. In ihrer Gesamtheit ergeben die 81 LEDs 2 eine Leuchte mit annähernd kreisförmiger Peripherie, so wie man es aus Fig. 3 ersehen kann. Die Kautschukunterlage 3 dient als elastischer Träger für die LEDs 2.The illustrated in the figures embodiment of the LED device according to the invention 1 has 81 LEDs 2, which are relatively densely packed in a stable but in both Surface directions stretchable rubber layer 3 are embedded. This is in Figs. 1 and 3 for the spot position of the embodiment of the LED device 1 according to the invention shown. In their entirety, the 81 LEDs 2 provide a lamp with approximately circular Periphery, as can be seen from Fig. 3. The rubber pad 3 serves as elastic support for the LEDs 2.

Die Kautschukunterlage 3 mit den darin eingelassenen LEDs 2 ist in einen Rahmen 5 eingespannt. Dieser Rahmen 5 nimmt ferner einen pilzförmigen Stempel 4 auf, der von der der Abstrahlrichtung der LEDs 2 abgewandten Seite mittels einer Flügelschraube 6 gegen die Kautschukunterlage 3 gedrückt werden kann (siehe Fig. 2).The rubber base 3 with the LEDs 2 embedded therein is clamped in a frame 5. This frame 5 also receives a mushroom-shaped punch 4, which of the radiation direction the LEDs 2 side facing away by means of a wing nut 6 against the rubber pad 3 can be pressed (see Fig. 2).

Ist der Stempel 4, so wie in Fig. 1 gezeigt, vollständig von der Kautschukunterlage 3 weggeführt, so befindet sich das Ausführungsbeispiel der erfindungsgemäßen LED-Vorrichtung 1 in Spotstellung. Der Abstrahlwinkel jeder einzelnen LED 2 beträgt ungefähr 10°. Die LEDs 2 sind so dicht nebeneinander angeordnet, daß sich ihre einzelnen Lichtkegel bereits sehr nahe an der LED-Vorrichtung 1 stark überlagern und zu einem Gesamtkegel relativ hoher Lichtintensität addieren. Dies ist in Fig. 4 dargestellt. Der Abstrahlwinkel des Gesamtlichtkegels beträgt in Spotstellung ungefähr 10°.Is the punch 4, as shown in Fig. 1, completely led away from the rubber pad 3, so is the embodiment of the LED device 1 according to the invention in Spot position. The radiation angle of each LED 2 is approximately 10 °. The LEDs 2 are arranged so close together that their individual light cone already very close strongly overlap at the LED device 1 and to a total cone of relatively high light intensity add. This is shown in Fig. 4. The radiation angle of the total light cone is in spot position about 10 °.

Wird nun der Stempel 4 mittels der Flügelschraube 6 von unten (siehe Fig. 2) gegen die Kautschukunterlage 3 gedrückt, so beginnt sich die Kautschukunterlage 3 zu wölben. Dies führt dazu, daß die LEDs 2 nicht mehr alle in die gleiche Richtung abstrahlen. Der Abstrahlwinkel des Gesamtlichtkegels vergrößert sich. Gleichzeitig wird der auf eine beleuchtete Flächeneinheit entfallende Anteil des von dem Ausführungsbeispiel der erfindungsgemäßen LED-Vorrichtung 1 abgestrahlten Lichtes verglichen mit dem Anteil in Spotstellung geringer, d.h. die Lichtintensität verkleinert sich. Die Ursache hierfür ist, daß sich die Lichtkegel der einzelnen LEDs 2 nicht mehr so stark überlagern wie noch in der Spotstellung.Now, the punch 4 by means of the thumbscrew 6 from below (see Fig. 2) against the rubber pad 3, the rubber pad 3 begins to buckle. this leads to to the fact that the LEDs 2 no longer radiate all in the same direction. The beam angle of the total light cone increases. At the same time, it is illuminated on a surface unit attributable proportion of the embodiment of the LED device according to the invention 1 emitted light compared with the proportion in spot position less, i. the light intensity decreases. The reason for this is that the light cone of each LEDs 2 no longer overlap as much as they do in the spot position.

Sobald die Kautschukunterlage 3 durch den Stempel 4 weitestmöglich gespannt ist, hat das Ausführungsbeispiel der erfindungsgemäßen LED-Vorrichtung 1 seine Flutstellung erreicht. In der Flutstellung ist die Überlagerung der Lichtkegel der einzelnen LEDs 2 weitgehend aufgehoben und durch eine einfache, d.h. einander nicht überlagernde, räumliche Ergänzung der einzelnen LED-Lichtkegel ersetzt. Dies ist in Fig. 5 schematisch verdeutlicht.Once the rubber pad 3 is stretched by the punch 4 as far as possible, has Embodiment of the LED device 1 according to the invention reaches its flooding position. In the flood position, the superimposition of the light cone of the individual LEDs 2 is largely eliminated and by a simple, i. non - overlapping, spatial complement of the single LED light cone replaced. This is illustrated schematically in FIG. 5.

Fig. 6 zeigt einen direkten Vergleich von Spotstellung (Überlagerung der einzelnen LED-Lichtkegel, relativ hohe Lichtintensität) und Flutstellung (keine Überlagerung sondern einfache Ergänzung der einzelnen LED-Lichtkegel, relativ niedrige Lichtintensität).6 shows a direct comparison of spot position (superimposition of the individual LED light cones, relatively high light intensity) and flooding (no overlapping but simple Supplement the individual LED light cone, relatively low light intensity).

Während der Abstrahlwinkel des Gesamtlichtkegels des Ausführungsbeispiels der erfindungsgemäßen LED-Vorrichtung 1 in Spotstellung ungefähr 10° beträgt, so vergrößert er sich, je weiter der Stempel 4 die Kautschukunterlage 3 spannt. In Flutstellung schließlich beträgt der Abstrahlwinkel des Gesamtlichtkegels des Ausführungsbeispiels der erfindungsgemäßen LED-Vorrichtung 1 ungefähr 70°. Fig. 7 zeigt eine entsprechende Gegenüberstellung der Abstrahlwinkel des Gesamtlichtkegels des Ausführungsbeispiels der erfindungsgemäßen LED-Vorrichtung 1 in Spotstellung und in Flutstellung.While the radiation angle of the total light cone of the embodiment of the invention LED device 1 in spot position is about 10 °, it increases the further the punch 4 tightens the rubber layer 3. In flood position finally amounts to the emission angle of the total light cone of the embodiment of the invention LED device 1 about 70 °. Fig. 7 shows a corresponding comparison the emission angle of the total light cone of the embodiment of the invention LED device 1 in spot position and in flood position.

In dem vorstehend beschriebenen speziellen Ausführungsbeispiel der erfindungsgemäßen LED-Vorrichtung fungiert als elastischer Träger die Kautschukunterlage 3. Es wird jedoch ausdrücklich darauf hingewiesen, daß der elastische Träger nicht unbedingt aus Kautschuk bestehen muß. Vielmehr ist hierfür auch jedes andere elastisch verformbare Material geeignet.In the specific embodiment of the invention described above LED device acts as an elastic support the rubber base 3. It will however expressly noted that the elastic backing is not necessarily made of rubber must exist. Rather, any other elastically deformable material is suitable for this purpose.

Claims (16)

LED-Vorrichtung (1) mit veränderlichem Abstrahlwinkel, gekennzeichnet durch mehrere LEDs (2), die nebeneinander auf oder in einen elastischen Träger (3) montiert sind, und eine Einrichtung (4) zur gezielten Verformung des elastischen Trägers (3), wobei die LEDs (2), der elastische Träger (3) und die Einrichtung (4) zur gezielten Verformung des elastischen Trägers (3) derart gestaltet und angeordnet sind, daß durch die gezielte Verformung des elastischen Trägers (3) mittels der hierzu vorgesehenen Einrichtung (4) die Veränderung des Abstrahlwinkels der LED-Vorrichtung (1) hervorgerufen wird.LED device (1) with variable radiation angle, characterized by a plurality of LEDs (2) mounted side by side on or in an elastic support (3), and a device (4) for targeted deformation of the elastic support (3), wherein the LEDs (2), the elastic support (3) and the device (4) for the targeted deformation of the elastic support (3) are designed and arranged such that by the targeted deformation of the elastic support (3) by means provided for this purpose (4) the change of the radiation angle of the LED device (1) is caused. LED-Vorrichtung (1) nach Anspruch 1, dadurch gekennzeichnet, daß die LEDs (2) so dicht gepackt sind, daß sich in Spotstellung der LED-Vorrichtung (1) Lichtkegel zumindest einiger der LEDs (2) spätestens in 5 m Entfernung von der LED-Vorrichtung (1) überlagern.LED device (1) according to claim 1, characterized in that the LEDs (2) are packed so tightly that in spot position of the LED device (1) light cone at least some of the LEDs (2) at the latest 5 m away from the Overlay the LED device (1). LED-Vorrichtung (1) nach Anspruch 2, dadurch gekennzeichnet, daß die LEDs (2) so dicht gepackt sind, daß sich in Spotstellung der LED-Vorrichtung (1) Lichtkegel zumindest einiger der LEDs (2) spätestens in 1 m Entfernung von der LED-Vorrichtung (1) überlagern.LED device (1) according to claim 2, characterized in that the LEDs (2) are packed so densely that in the spot position of the LED device (1) light cone at least some of the LEDs (2) at least 1 m away from the Overlay the LED device (1). LED-Vorrichtung (1) nach Anspruch 3, dadurch gekennzeichnet, daß die LEDs (2) so dicht gepackt sind, daß sich in Spotstellung der LED-Vorrichtung (1) Lichtkegel zumindest einiger der LEDs (2) spätestens in 50 cm Entfernung von der LED-Vorrichtung (1) überlagern.LED device (1) according to claim 3, characterized in that the LEDs (2) are packed so tightly that in spot position of the LED device (1) light cone at least some of the LEDs (2) at the latest 50 cm away from the Overlay the LED device (1). LED-Vorrichtung (1) nach Anspruch 4, dadurch gekennzeichnet, daß die LEDs (2) so dicht gepackt sind, daß sich in Spotstellung der LED-Vorrichtung (1) Lichtkegel zumindest einiger der LEDs (2) spätestens in 10 cm Entfernung von der LED-Vorrichtung (1) überlagern.LED device (1) according to claim 4, characterized in that the LEDs (2) are packed so tightly that in the spot position of the LED device (1) light cone at least some of the LEDs (2) at the latest 10 cm away from the Overlay the LED device (1). LED-Vorrichtung (1) nach Anspruch 5, dadurch gekennzeichnet, daß die LEDs (2) so dicht gepackt sind, daß sich in Spotstellung der LED-Vorrichtung (1) Lichtkegel zumindest einiger der LEDs (2) spätestens in 5 cm Entfernung von der LED-Vorrichtung (1) überlagern.LED device (1) according to claim 5, characterized in that the LEDs (2) are packed so tightly that in spot position of the LED device (1) light cone at least some of the LEDs (2) at the latest 5 cm away from the Overlay the LED device (1). LED-Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die LEDs (2) so angeordnet sind, daß sie in Spotstellung in ihrer Gesamtheit eine Leuchte mit annähernd kreisförmiger Peripherie ergeben.LED device (1) according to one of the preceding claims, characterized in that the LEDs (2) are arranged so that, when in the spot position, they produce in their entirety a lamp with an approximately circular periphery. LED-Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der elastische Träger (3) in einen Rahmen (5) eingespannt ist.LED device (1) according to one of the preceding claims, characterized in that the elastic support (3) is clamped in a frame (5). LED-Vorrichtung (1) nach Anspruch 8, dadurch gekennzeichnet, daß als Einrichtung (4) zur gezielten Verformung des elastischen Trägers (3) ein Stempel (4) vorgesehen ist, welcher von der der Abstrahlrichtung der LEDs (2) abgewandten Seite des elastischen Trägers (3) gegen den elastischen Träger (3) gedrückt werden kann.LED device (1) according to claim 8, characterized in that as device (4) for targeted deformation of the elastic support (3) a punch (4) is provided, which faces away from the emitting direction of the LEDs (2) side of the elastic Support (3) against the elastic support (3) can be pressed. LED-Vorrichtung (1) nach Anspruch 9, dadurch gekennzeichnet, daß der Stempel (4) pilzförmig ausgebildet ist.LED device (1) according to claim 9, characterized in that the punch (4) is mushroom-shaped. LED-Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß sie mindestens 20 LEDs (2) aufweist.LED device (1) according to one of the preceding claims, characterized in that it comprises at least 20 LEDs (2). LED-Vorrichtung (1) nach Anspruch 11, dadurch gekennzeichnet, daß sie mindestens 50 LEDs (2) aufweist.LED device (1) according to claim 11, characterized in that it comprises at least 50 LEDs (2). LED-Vorrichtung (1) nach Anspruch 12, dadurch gekennzeichnet, daß sie mindestens 80 LEDs (2) aufweist.LED device (1) according to claim 12, characterized in that it comprises at least 80 LEDs (2). LED-Vorrichtung (1) nach Anspruch 13, dadurch gekennzeichnet, daß sie mindestens 100 LEDs (2) aufweist.LED device (1) according to claim 13, characterized in that it comprises at least 100 LEDs (2). LED-Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß die LEDs (2) im wesentlichen gleichmäßig verteilt angeordnet sind. LED device (1) according to one of the preceding claims, characterized in that the LEDs (2) are arranged substantially uniformly distributed. LED-Vorrichtung (1) nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, daß der elastische Träger (3) aus Kautschuk besteht.LED device (1) according to one of the preceding claims, characterized in that the elastic support (3) consists of rubber.
EP05013533A 2004-06-23 2005-06-23 LED device with a variable beam spreading angle Withdrawn EP1610059A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202004009836U DE202004009836U1 (en) 2004-06-23 2004-06-23 LED device with variable beam angle
DE202004009836U 2004-06-23

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EP1610059A2 true EP1610059A2 (en) 2005-12-28
EP1610059A3 EP1610059A3 (en) 2006-10-18

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US8042967B2 (en) 2006-01-16 2011-10-25 Koninklijke Philips Electronics N.V. Lamp module and lighting device comprising such a lamp module

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DE202004009836U1 (en) 2004-08-19

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