EP2103869B1 - Beleuchtungssystem mit Leuchtdioden - Google Patents

Beleuchtungssystem mit Leuchtdioden Download PDF

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Publication number
EP2103869B1
EP2103869B1 EP09003522.1A EP09003522A EP2103869B1 EP 2103869 B1 EP2103869 B1 EP 2103869B1 EP 09003522 A EP09003522 A EP 09003522A EP 2103869 B1 EP2103869 B1 EP 2103869B1
Authority
EP
European Patent Office
Prior art keywords
light
lighting system
facets
reflector
mirror
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.)
Not-in-force
Application number
EP09003522.1A
Other languages
English (en)
French (fr)
Other versions
EP2103869A1 (de
Inventor
Denis Gruet
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.)
CML Innovative Technologies SAS
Original Assignee
CML Innovative Technologies SAS
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Filing date
Publication date
Application filed by CML Innovative Technologies SAS filed Critical CML Innovative Technologies SAS
Publication of EP2103869A1 publication Critical patent/EP2103869A1/de
Application granted granted Critical
Publication of EP2103869B1 publication Critical patent/EP2103869B1/de
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • 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
  • EP 1.300.626 discloses such a lighting system.
  • 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 provides a lighting system according to claim 1.
  • 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.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (5)

  1. Beleuchtungssystem mit Leuchtdiode, umfassend:
    eine Leuchtdiode (LED) (12), die Lichtstrahlen (14) in mindestens einer Ausstrahlungsrichtung (Z), in eine erste Richtung (Z1) ausstrahlt,
    einen Reflektor (16), der angepasst ist, um die Lichtstrahlen (14) in eine Austrittsrichtung umzuleiten, wobei der Reflektor (16) wenigstens einen Spiegel (18) und einen Satz von Ablenkungsflächen (20) umfasst, wobei der Spiegel (18) angepasst ist, um die von der LED (12) ausgestrahlten Lichtstrahlen (14) wenigstens auf eine Ablenkungsfläche (20) zu lenken, die angepasst ist, um die Lichtstrahlen (14) in der Austrittsrichtung parallel zu der Ausstrahlungsrichtung (Z), in eine zweite, der ersten Richtung (Z1) gegenüberliegenden Richtung umzulenken (Z2), wobei der Satz von Ablenkungsflächen (20) abwechselnd mit Seitenflächen (22) angeordnet ist, und der Reflektor (16) zwei Spiegel (18) und zwei Sätze von Ablenkungsflächen (20) abwechselnd mit Seitenflächen (22) umfasst, wobei die zwei Spiegel (18) und die zwei Sätze symmetrisch bezüglich einer zentralen Achse im wesentlichen parallel zu der Ausstrahlungsrichtung (Z) angeordnet sind.
  2. Beleuchtungssystem nach dem vorhergehenden Anspruch, dadurch gekennzeichnet, dass der Spiegel (18) benachbart zu einer seitlichen Fläche (22) angeordnet ist.
  3. Beleuchtungssystem nach einem der vorhergehenden Ansprüche, bei dem zwei Spiegel (18) benachbart zu einander angeordnet sind.
  4. Beleuchtungssystem nach einem der vorhergehenden Ansprüche, bei dem die Ausstrahlungsflächen flache Oberflächen sind.
  5. Beleuchtungssystem nach einem der vorhergehenden Ansprüche, bei dem die Ausstrahlungsflächen komplexe Oberflächen sind.
EP09003522.1A 2008-03-19 2009-03-11 Beleuchtungssystem mit Leuchtdioden Not-in-force EP2103869B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0801492A FR2928992B1 (fr) 2008-03-19 2008-03-19 Systeme d'eclairage a diode electroluminescente.

Publications (2)

Publication Number Publication Date
EP2103869A1 EP2103869A1 (de) 2009-09-23
EP2103869B1 true EP2103869B1 (de) 2014-05-14

Family

ID=39473983

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09003522.1A Not-in-force EP2103869B1 (de) 2008-03-19 2009-03-11 Beleuchtungssystem mit Leuchtdioden

Country Status (2)

Country Link
EP (1) EP2103869B1 (de)
FR (1) FR2928992B1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
CN104662363B (zh) * 2012-06-04 2017-05-17 飞利浦照明控股有限公司 具有光反射器的照明装置，具有该照明装置的灯具及制造紧凑的光反射器的方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10149273A1 (de) * 2001-10-05 2003-04-17 Reitter & Schefenacker Gmbh Reflektor für eine Leuchte, wie eine Heckleuchte, ein Scheinwerfer oder eine Innenbeleuchtung eines Kraftfahrzeuges
US6527420B1 (en) * 2001-12-06 2003-03-04 Prokia Technology Co., Ltd. Illuminating module for a display apparatus
DE10211189A1 (de) * 2002-03-14 2003-10-09 Schefenacker Vision Systems Leuchteinheit, insbesondere als Zusatzeinheit in Außenrückblickspiegeln von Kraftfahrzeugen
WO2004097293A1 (de) * 2003-04-30 2004-11-11 Lighting Innovation Center Ag Träger für eine leuchte sowie leuchtenkopf mit einem träger und einem reflektor
US7246917B2 (en) 2003-08-12 2007-07-24 Illumination Management Solutions, Inc. Apparatus and method for using emitting diodes (LED) in a side-emitting device
WO2007022314A2 (en) * 2005-08-17 2007-02-22 Illumination Management Solutions, Inc. An improved optic for leds and other light sources
TWI294023B (en) * 2006-03-17 2008-03-01 Ind Tech Res Inst Reflective illumination device

Also Published As

Publication number Publication date
FR2928992B1 (fr) 2010-05-14
EP2103869A1 (de) 2009-09-23
FR2928992A1 (fr) 2009-09-25

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