EP2103869A1 - Light-emitting diode lighting system - Google Patents

Light-emitting diode lighting system Download PDF

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Publication number
EP2103869A1
EP2103869A1 EP09003522A EP09003522A EP2103869A1 EP 2103869 A1 EP2103869 A1 EP 2103869A1 EP 09003522 A EP09003522 A EP 09003522A EP 09003522 A EP09003522 A EP 09003522A EP 2103869 A1 EP2103869 A1 EP 2103869A1
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EP
European Patent Office
Prior art keywords
facets
lighting system
light
reflector
light rays
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Granted
Application number
EP09003522A
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German (de)
French (fr)
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EP2103869B1 (en
Inventor
Denis Gruet
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CML Innovative Technologies SAS
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CML Innovative Technologies SAS
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    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/0008—Reflectors for light sources providing for indirect lighting
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/048—Optical design with facets structure
    • 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
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/09—Optical design with a combination of different curvatures
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • 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 present invention relates to a light emitting diode lighting system.
  • a lighting system comprising a light-emitting diode (LED) emitting light rays in at least one transmission direction, in a first direction, and a reflector adapted to redirect the light rays in an output direction.
  • LED light-emitting diode
  • the document US 2005/0083699 describes a lighting system of the type described above, wherein the reflector comprises a first reflector consisting of a reflecting mirror and a second reflector for returning the light received from the first reflector in all directions.
  • the lighting system described in this document initially makes it possible to send the light in a direction opposite to the direction of emission of the LED and then to return the light in a direction substantially perpendicular to the direction of emission thanks to a second reflector .
  • the latter has a substantially conical shape.
  • the system described in this document is cumbersome and can not be used in small spaces, for example for vehicle brake lights.
  • the system does not make it possible to direct the final light beam in a direction opposite to the initial beam.
  • the present invention aims to overcome these disadvantages.
  • the present invention proposes a lighting system of the type described above, in which the reflector comprises at least one mirror and one deflection facet, the mirror being adapted to direct the light rays emitted by the LED towards at least one facet of return which is adapted to redirect the light rays in the direction of exit, parallel to the direction of emission, in a second direction opposite to the first direction.
  • the system makes it possible to obtain a homogeneous light without direct vision of the LED.
  • the figure 1 represents the lighting system 10 according to the invention.
  • the system 10 comprises a light emitting diode 12, hereinafter called LED, which emits a set of light rays 14 in a transmission direction Z, in a first direction Z1.
  • the system further comprises a reflector 16 of glossy polished plastic material having a reflective treatment of metallization type, adapted to reflect light.
  • a reflector 16 of glossy polished plastic material having a reflective treatment of metallization type, adapted to reflect light.
  • the reflector 16 has two parts.
  • a first part consists of a mirror 18 which directly receives the light rays 14 emitted by the LED 12 and which sends them in a determined direction to a second part of the reflector.
  • the mirror 18 is adapted to return the light rays 14 in the direction perpendicular x to the direction of emission Z. However, it can be expected to redirect the light rays 14 in other directions, depending on the position of the second part reflector.
  • the second part of the reflector comprises at least one deflection facet 20 adapted to direct the light rays 14, arriving on the facet 20, in a direction parallel to the transmission direction Z, but in an opposite direction Z2.
  • the light rays 14 coming out of the lighting system 10 are directed in a direction opposite to the rays emitted by the LED 12.
  • the second part of the reflector further comprises a series of deflection facets 20 alternating with side facets 22.
  • the side facets 22 extend in a plane so that the light rays 14 directed by the mirror 18 do not
  • These lateral facets 22 extend in a plane inclined with respect to the direction of the light rays redirected by the mirror 18, so that the distal ends of the lateral facets 22 can be directed onto said lateral facets 22. , in relation to the mirror, move away from the light rays 14.
  • the return facets 20 are mirror surfaces that direct the rays on a given target.
  • the dimensions of each deflection facet 20 are determined so that each of them returns the same amount of light, in order to obtain an illumination homogeneity.
  • the final illumination obtained consists of a set of light beams spaced at a constant pitch depending on the total length of the reflector, each beam corresponding to a quantity of light reflected by the return facet.
  • the pitch between each deflection facet (20) corresponds to the length of a side facet (22) and is determined according to the length of the reflector to be obtained.
  • each return facet (20) is variable and determined so that each of them returns the same amount of light.
  • the height is calculated according to the number of deflection facets (20) desired so the step between each facet.
  • the return facets (20) can take different forms depending on the target to be illuminated.
  • the shape of these return facets can be flat or complex such as concave or convex combined or not with a circular or polygon shape.
  • the shape of the return facet is determined according to the shape of the desired final beam.
  • the final beam extends along the transmission direction Z in the direction Z2.
  • the diffusion of the final beam may be in the form of a conical beam around the emission direction Z, or a beam which has a constant section of the same dimension as the surface of the return facet.
  • the reflector as shown on the figure 1 comprises two mirrors (18), and two sets of alternating facets (20) and side facets (22).
  • the two mirrors (18) as well as the two series are symmetrical with respect to a central axis C substantially parallel to the emission direction Z.
  • the reflector is made in one piece, and is arranged so that the central axis is substantially coincident with the emission direction Z.
  • the present invention finds particular application in vehicle lights. Indeed its compact dimensions allow to have the system in relatively small spaces. In addition this system allows a non-direct vision of the LED, to avoid any glare of the following vehicles by the LED light.

Abstract

The system has a LED (12) for emitting light rays (14) along an emission direction (Z), in a path (Z1). A reflector (16) has a mirror (18), and a series of return facets (20) e.g. complex surfaces, alternatively arranged with lateral facets (22). The mirror directs the light rays from the LED towards the return facets. Each return facet redirects the same quantity of the light rays along an output direction in another path (Z2) opposite to the path (Z1). The output direction is parallel to the emission direction.

Description

La présente invention se rapporte à un système d'éclairage à diode électroluminescente.The present invention relates to a light emitting diode lighting system.

Plus particulièrement elle concerne un système d'éclairage comportant une diode électroluminescente (LED) émettant des rayons lumineux selon au moins une direction d'émission, dans un premier sens, et un réflecteur adapté à rediriger les rayons lumineux selon une direction de sortie.More particularly, it relates to a lighting system comprising a light-emitting diode (LED) emitting light rays in at least one transmission direction, in a first direction, and a reflector adapted to redirect the light rays in an output direction.

Le document US 2005/0083699 décrit un système d'éclairage du type décrit précédemment, dans lequel le réflecteur comporte un premier réflecteur constitué d'un miroir de renvoi et un deuxième réflecteur permettant de renvoyer la lumière reçue du premier réflecteur selon toutes les directions. Le système d'éclairage décrit dans ce document permet dans un premier temps de renvoyer la lumière selon un sens opposé au sens d'émission de la LED puis de renvoyer la lumière selon une direction sensiblement perpendiculaire au sens d'émission grâce à un second réflecteur. Ce dernier présente une forme sensiblement conique.The document US 2005/0083699 describes a lighting system of the type described above, wherein the reflector comprises a first reflector consisting of a reflecting mirror and a second reflector for returning the light received from the first reflector in all directions. The lighting system described in this document initially makes it possible to send the light in a direction opposite to the direction of emission of the LED and then to return the light in a direction substantially perpendicular to the direction of emission thanks to a second reflector . The latter has a substantially conical shape.

Toutefois le système décrit dans ce document est encombrant et ne peut pas être utilisé dans des espaces réduits, par exemple pour des feux stop de véhicule. De plus le système ne permet pas de diriger le faisceau de lumière final selon une direction opposée au faisceau initial.However, the system described in this document is cumbersome and can not be used in small spaces, for example for vehicle brake lights. In addition, the system does not make it possible to direct the final light beam in a direction opposite to the initial beam.

La présente invention a pour but de remédier à ces inconvénients.The present invention aims to overcome these disadvantages.

A cet effet la présente invention propose un système d'éclairage du type décrit précédemment, dans lequel le réflecteur comporte au moins un miroir et une facette de renvoi, le miroir étant adapté à diriger les rayons lumineux émis par la LED vers au moins une facette de renvoi qui est adaptée à rediriger les rayons lumineux selon la direction de sortie, parallèlement à la direction d'émission, dans un deuxième sens opposé au premier sens.For this purpose, the present invention proposes a lighting system of the type described above, in which the reflector comprises at least one mirror and one deflection facet, the mirror being adapted to direct the light rays emitted by the LED towards at least one facet of return which is adapted to redirect the light rays in the direction of exit, parallel to the direction of emission, in a second direction opposite to the first direction.

Grâce à ces dispositions, le système permet d'obtenir une lumière homogène sans vision directe de la LED.Thanks to these arrangements, the system makes it possible to obtain a homogeneous light without direct vision of the LED.

Selon d'autres caractéristiques:

  • le réflecteur comporte une série de facettes de renvoi en alternance avec des facettes latérales;
  • le miroir est disposé adjacent à une facette latérale;
  • le réflecteur comporte deux miroirs et deux séries de facettes de renvois en alternance avec des parties latérales, les deux miroirs et les deux séries étant disposés symétriques par rapport à un axe central sensiblement parallèle à la direction d'émission;
  • les deux miroirs sont disposés adjacents;
According to other characteristics:
  • the reflector has a series of return facets alternating with lateral facets;
  • the mirror is disposed adjacent to a side facet;
  • the reflector comprises two mirrors and two sets of alternating facets of references with lateral parts, the two mirrors and the two series being arranged symmetrically with respect to a central axis substantially parallel to the emission direction;
  • the two mirrors are arranged adjacent;

D'autres caractéristiques et avantages de l'invention apparaîtront au cours de la description suivante des modes de réalisation, donnés à titre d'exemple non limitatif, en regard des dessins joints et dans lesquels :

  • la figure 1 représente une vue d'ensemble du système d'éclairage selon l'invention,
  • la figure 2 représente une vue de détail de la LED et du miroir dans le système d'éclairage selon l'invention.
Other features and advantages of the invention will become apparent from the following description of the embodiments, given by way of non-limiting example, with reference to the accompanying drawings and in which:
  • the figure 1 represents an overview of the lighting system according to the invention,
  • the figure 2 represents a detailed view of the LED and the mirror in the lighting system according to the invention.

Sur les différentes figures, les mêmes références désignent des éléments identiques ou similaires.In the different figures, the same references designate identical or similar elements.

La figure 1 représente le système d'éclairage 10 selon l'invention. Le système 10 comporte une diode électroluminescente 12, appelée par la suite LED, qui émet un ensemble de rayons lumineux 14 selon une direction d'émission Z, dans un premier sens Z1.The figure 1 represents the lighting system 10 according to the invention. The system 10 comprises a light emitting diode 12, hereinafter called LED, which emits a set of light rays 14 in a transmission direction Z, in a first direction Z1.

Le système comporte en outre un réflecteur 16 en matière plastique polie glacée disposant d'un traitement réfléchissant de type métallisation, adapté à réfléchir la lumière. Ainsi la lumière émise par la LED 12 ne pénètre pas dans le réflecteur 16 et est complètement réfléchie par ce dernier.The system further comprises a reflector 16 of glossy polished plastic material having a reflective treatment of metallization type, adapted to reflect light. Thus the light emitted by the LED 12 does not enter the reflector 16 and is completely reflected by the latter.

Le réflecteur 16 comporte deux parties. Une première partie est constituée d'un miroir 18 qui reçoit directement les rayons lumineux 14 émis par la LED 12 et qui les renvoie selon une direction déterminée, vers une deuxième partie du réflecteur. Tel que représenté à la figure 2, le miroir 18 est adapté à renvoyer les rayons lumineux 14 selon direction perpendiculaire x à la direction d'émission Z. Toutefois il peut être prévu de rediriger les rayons lumineux 14 selon d'autres directions, en fonction de la position de la deuxième partie du réflecteur.The reflector 16 has two parts. A first part consists of a mirror 18 which directly receives the light rays 14 emitted by the LED 12 and which sends them in a determined direction to a second part of the reflector. As shown in figure 2 , the mirror 18 is adapted to return the light rays 14 in the direction perpendicular x to the direction of emission Z. However, it can be expected to redirect the light rays 14 in other directions, depending on the position of the second part reflector.

La deuxième partie du réflecteur comporte au moins une facette de renvoi 20 adaptée à diriger les rayons lumineux 14, arrivant sur la facette 20, selon une direction parallèle à la direction d'émission Z, mais dans un sens opposé Z2. Ainsi les rayons de lumière 14 sortant du système d'éclairage 10 sont dirigés selon un sens opposé aux rayons émis par la LED 12.The second part of the reflector comprises at least one deflection facet 20 adapted to direct the light rays 14, arriving on the facet 20, in a direction parallel to the transmission direction Z, but in an opposite direction Z2. Thus the light rays 14 coming out of the lighting system 10 are directed in a direction opposite to the rays emitted by the LED 12.

Tel que représenté sur la figure 1, la deuxième partie du réflecteur comporte en outre une série de facettes de renvoi 20 en alternance avec des facettes latérales 22. Les facettes latérales 22 s'étendent dans un plan de manière à ce que les rayons de lumière 14 dirigés par le miroir 18 ne puissent pas être dirigés sur lesdites facettes latérales 22. A cet effet les facettes latérales 22 s'étendent dans un plan incliné par rapport à la direction des rayons lumineux redirigés par le miroir 18, de manière à ce que les extrémités distales des facettes latérales 22, par rapport au miroir, s'éloignent des rayons lumineux 14.As shown on the figure 1 , the second part of the reflector further comprises a series of deflection facets 20 alternating with side facets 22. The side facets 22 extend in a plane so that the light rays 14 directed by the mirror 18 do not These lateral facets 22 extend in a plane inclined with respect to the direction of the light rays redirected by the mirror 18, so that the distal ends of the lateral facets 22 can be directed onto said lateral facets 22. , in relation to the mirror, move away from the light rays 14.

Les facettes de renvoi 20 sont des surfaces miroir qui permettent de diriger les rayons sur une cible donnée. Les dimensions de chaque facette de renvoi 20 sont déterminées pour que chacune d'elle renvoie la même quantité de lumière, afin d'obtenir une homogénéité d'éclairage. L'éclairage final obtenu est constitué d'un ensemble de faisceaux lumineux espacés d'un pas constant dépendant de la longueur totale du réflecteur, chaque faisceau correspondant à une quantité de lumière renvoyée par la facette de renvoi.The return facets 20 are mirror surfaces that direct the rays on a given target. The dimensions of each deflection facet 20 are determined so that each of them returns the same amount of light, in order to obtain an illumination homogeneity. The final illumination obtained consists of a set of light beams spaced at a constant pitch depending on the total length of the reflector, each beam corresponding to a quantity of light reflected by the return facet.

Le pas entre chaque facette de renvoi (20) correspond à la longueur d'une facette latérale (22) et est déterminé en fonction de la longueur du réflecteur à obtenir.The pitch between each deflection facet (20) corresponds to the length of a side facet (22) and is determined according to the length of the reflector to be obtained.

La hauteur de chaque facette de renvoi (20) est variable et déterminée pour que chacune d'elle renvoie la même quantité de lumière. La hauteur est calculée en fonction du nombre de facettes de renvoi (20) désiré donc du pas entre chaque facette.The height of each return facet (20) is variable and determined so that each of them returns the same amount of light. The height is calculated according to the number of deflection facets (20) desired so the step between each facet.

Selon une vue de dessous, les facettes de renvoi (20) peuvent prendre différentes formes en fonction de la cible à éclairer. La forme de ces facettes de renvoi peut être plane ou complexe telle que concave ou convexe combinée ou non à une forme circulaire ou de polygone. La forme de la facette de renvoi est déterminée en fonction de la forme du faisceau final souhaité. Le faisceau final s'étend le long de la direction d'émission Z dans le sens Z2. Par exemple la diffusion du faisceau final peut se présenter sous la forme d'un faisceau conique autour de la direction d'émission Z, ou bien un faisceau qui présente une section constante de même dimension que la surface de la facette de renvoi.According to a view from below, the return facets (20) can take different forms depending on the target to be illuminated. The shape of these return facets can be flat or complex such as concave or convex combined or not with a circular or polygon shape. The shape of the return facet is determined according to the shape of the desired final beam. The final beam extends along the transmission direction Z in the direction Z2. For example, the diffusion of the final beam may be in the form of a conical beam around the emission direction Z, or a beam which has a constant section of the same dimension as the surface of the return facet.

Le réflecteur, tel que représenté sur la figure 1, comporte deux miroirs (18), et deux séries de facettes de renvoi (20) et de facettes latérales (22) disposées en alternance. Les deux miroirs (18) ainsi que les deux séries sont symétriques par rapport à un axe central C sensiblement parallèle à la direction d'émission Z.The reflector, as shown on the figure 1 comprises two mirrors (18), and two sets of alternating facets (20) and side facets (22). The two mirrors (18) as well as the two series are symmetrical with respect to a central axis C substantially parallel to the emission direction Z.

Le réflecteur est réalisé en une seule pièce, et il est disposé de manière à ce que l'axe central soit sensiblement confondu avec la direction d'émission Z.The reflector is made in one piece, and is arranged so that the central axis is substantially coincident with the emission direction Z.

La présente invention trouve une application particulière dans les feux de véhicule. En effet ses dimensions compactes permettent de disposer le système dans des espaces relativement réduits. De plus ce système permet une vision non directe de la LED, pour éviter tout éblouissement des véhicules suivants par la lumière de la LED.The present invention finds particular application in vehicle lights. Indeed its compact dimensions allow to have the system in relatively small spaces. In addition this system allows a non-direct vision of the LED, to avoid any glare of the following vehicles by the LED light.

Claims (6)

Système d'éclairage à diode électroluminescente comportant : une diode électroluminescente (LED) (12) émettant des rayons lumineux (14) selon au moins une direction d'émission (Z), dans un premier sens (Z1), un réflecteur (16) adapté à rediriger les rayons lumineux (14) selon une direction de sortie, caractérisé en ce que le réflecteur (16) comporte au moins un miroir (18) et une série de facettes de renvoi (20) en alternance avec des facettes latérales (22), le miroir (18) étant adapté à diriger les rayons lumineux (14) émis par la LED (12) vers au moins une facette de renvoi (20) qui est adaptée à rediriger les rayons lumineux (14) selon la direction de sortie, parallèlement à la direction d'émission (Z), dans un deuxième sens (Z2) opposé au premier sens (Z1).Light-emitting diode lighting system comprising: a light-emitting diode (LED) (12) emitting light rays (14) in at least one transmission direction (Z) in a first direction (Z1), a reflector (16) adapted to redirect the light rays (14) in an exit direction, characterized in that the reflector (16) has at least one mirror (18) and a series of deflection facets (20) alternating with side facets (22), the mirror (18) being adapted to direct the light rays ( 14) emitted by the LED (12) towards at least one deflection facet (20) which is adapted to redirect the light rays (14) in the exit direction, parallel to the transmission direction (Z), in a second direction (Z2) opposite to the first direction (Z1). Système d'éclairage selon l'une des revendications précédentes, caractérisé en ce que le miroir (18) est disposé adjacent à une facette latérale (22).Lighting system according to one of the preceding claims, characterized in that the mirror (18) is arranged adjacent to a lateral facet (22). Système d'éclairage selon l'une des revendications précédentes, caractérisé en ce que le réflecteur (16) comporte deux miroirs (18) et deux séries de facettes de renvois (20) en alternance avec des facettes latérales (22), les deux miroirs (18) et les deux séries étant disposés symétriques par rapport à un axe central sensiblement parallèle à la direction d'émission (Z).Lighting system according to one of the preceding claims, characterized in that the reflector (16) has two mirrors (18) and two sets of facets (20) alternating with side facets (22), the two mirrors (18) and the two series being disposed symmetrically with respect to a central axis substantially parallel to the emission direction (Z). Système d'éclairage selon l'une des revendications précédentes, dans lequel les deux miroirs (18) sont disposés adjacents.Lighting system according to one of the preceding claims, wherein the two mirrors (18) are arranged adjacent. Système d'éclairage selon l'une des revendications précédentes, dans lequel les facettes de renvoi sont des surfaces planes.Lighting system according to one of the preceding claims, wherein the return facets are flat surfaces. Système d'éclairage selon l'une des revendications 1 à 5, dans lequel les facettes de renvoi sont des surfaces complexes.Lighting system according to one of claims 1 to 5, wherein the return facets are complex surfaces.
EP09003522.1A 2008-03-19 2009-03-11 Light-emitting diode lighting system Not-in-force EP2103869B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0801492A FR2928992B1 (en) 2008-03-19 2008-03-19 ELECTROLUMINESCENT DIODE LIGHTING SYSTEM.

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EP2103869A1 true EP2103869A1 (en) 2009-09-23
EP2103869B1 EP2103869B1 (en) 2014-05-14

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Cited By (2)

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WO2013182966A1 (en) * 2012-06-04 2013-12-12 Koninklijke Philips N.V. Lighting device with optical reflector, luminaire having such lighting device and method of manufacturing a compact optical reflector
CN104662363A (en) * 2012-06-04 2015-05-27 皇家飞利浦有限公司 Lighting device with optical reflector, luminaire having such lighting device and method of manufacturing a compact optical reflector

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EP1300626A2 (en) * 2001-10-05 2003-04-09 Schefenacker Vision Systems Germany GmbH & Co. KG Reflector for a lamp, such as a tail lamp, a headlamp or a inner lamp of a motor vehicle
US6527420B1 (en) * 2001-12-06 2003-03-04 Prokia Technology Co., Ltd. Illuminating module for a display apparatus
WO2003078203A1 (en) * 2002-03-14 2003-09-25 Schefenacker Vision Systems Germany Gmbh & Co. Kg Luminous unit, particularly as an additional light in sideview mirrors of motor vehicles
WO2004097293A1 (en) * 2003-04-30 2004-11-11 Lighting Innovation Center Ag Carrier for light and light head provided with a carrier and reflector
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US20070217193A1 (en) * 2006-03-17 2007-09-20 Industrial Technology Research Institute Reflective illumination device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013182966A1 (en) * 2012-06-04 2013-12-12 Koninklijke Philips N.V. Lighting device with optical reflector, luminaire having such lighting device and method of manufacturing a compact optical reflector
CN104662363A (en) * 2012-06-04 2015-05-27 皇家飞利浦有限公司 Lighting device with optical reflector, luminaire having such lighting device and method of manufacturing a compact optical reflector
CN104662363B (en) * 2012-06-04 2017-05-17 飞利浦照明控股有限公司 Lighting device with optical reflector, luminaire having such lighting device and method of manufacturing a compact optical reflector
US9989213B2 (en) 2012-06-04 2018-06-05 Philips Lighting Holding B.V. Lighting device with optical reflector, luminaire having such lighting device and method of manufacturing a compact optical reflector

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FR2928992B1 (en) 2010-05-14
EP2103869B1 (en) 2014-05-14

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