FR2906009A1 - Signaling and lighting device e.g. signal lamp, for motor vehicle, has bonnet type flow collector with input and front output faces collecting maximum light flow from LED and offers desired spreading of beam by reflector - Google Patents

Signaling and lighting device e.g. signal lamp, for motor vehicle, has bonnet type flow collector with input and front output faces collecting maximum light flow from LED and offers desired spreading of beam by reflector Download PDF

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Publication number
FR2906009A1
FR2906009A1 FR0608194A FR0608194A FR2906009A1 FR 2906009 A1 FR2906009 A1 FR 2906009A1 FR 0608194 A FR0608194 A FR 0608194A FR 0608194 A FR0608194 A FR 0608194A FR 2906009 A1 FR2906009 A1 FR 2906009A1
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Prior art keywords
led
axis
beam
reflector
light
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Granted
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FR0608194A
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French (fr)
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FR2906009B1 (en
Inventor
Ruiz Carlos Gomez
Lamberterie Antoine De
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Valeo Vision SA
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Valeo Vision SA
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Priority to FR0608194A priority Critical patent/FR2906009B1/en
Publication of FR2906009A1 publication Critical patent/FR2906009A1/en
Application granted granted Critical
Publication of FR2906009B1 publication Critical patent/FR2906009B1/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

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Classifications

    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14Light emitting diodes [LED]

Abstract

The device has an optical part (Q) formed by a bonnet (Ga) type flow collector (G), which surrounds an axis of an LED. The bonnet is made in transparent material of refractive index more than the refractive index of air. The bonnet has an shaft shaped input face (2) that covers the LED with a peripheral wall (2a), and a front output face (4) forming a refracting surface. The faces collect maximum light flow from the LED and offers desired spreading of a beam by a reflector. The collector distributes light that is not preferably symmetrical to revolution with respect to the axis.

Description

LIGHTING AND / OR SIGNALING DEVICE FOR A MOTOR VEHICLE.

  The invention relates to a lighting and / or signaling device, in particular a signaling light, in particular for a motor vehicle, which comprises a light source formed by at least one light-emitting diode, or LED, emitting an essentially oriented beam. along the axis of the LED. The term LED, for the sake of brevity, is understood to mean the abbreviation for light-emitting diode. US 6,951,414 and EP 0 830 984 show signaling lights of the kind defined above. In these lights, however, there is a problem of light output. Indeed, the flux emitted by the LED is collected only very partially so that one is led to use more powerful LEDs and more expensive.

The invention aims to provide a signaling light in which the exploitation of the luminous flux provided by the LED is improved to ensure a better performance of the assembly. It is further desirable that the fire be of a simple and economical construction. According to the invention, a device of the kind defined above comprises: a light source formed by at least one light-emitting diode, or LED, emitting a substantially oriented beam, notably essentially along the axis of the LED; optical part arranged in front of the light-emitting diode 25 to collimate the beam, and a reflector arranged to receive the beam coming out of the optical part to reflect it in a transverse direction, in particular substantially 90, with respect to the axis of the LED (It is understood by transverse an inclination preferably substantially perpendicular, but which can also be oblique oblique, and be of for example an inclination of 80 or 100), the reflector having an elongated shape with a dimension transverse to the LED axis is smaller than the longitudinal dimension. In addition, the optical part is formed by a flux recuperator, of the windshield type, which surrounds the axis of the LED, made of transparent material of refractive index greater than that of air and which comprises: 2906009 2 - a well-shaped entrance face which caps the LED, with a peripheral wall surrounding the axis of the LED, - a rear reflection face inclined on the axis of the LED, - and an output front face forming dioptre, 5 the faces of the recuperator being provided to collect a maximum of the luminous flux of the LED and to ensure, in combination with the reflector, the desired spreading of the beam reflected by the reflector, the distribution of the light produced by the recuperator n being preferably not symmetrical with respect to the axis of the LED. The term "fire" is hereinafter referred to as any lighting and / or signaling device, for the sake of brevity, a light being an example of such a device. The fire may be provided to illuminate an elongate, oval-shaped beach, with a dimension, generally vertical, much smaller than the other orthogonal, generally horizontal, dimension. In this case, the section of the reflector by a plane parallel to the axis of the LED and the large dimension of the elongated beach is parabolic with a focus located on the axis of the LED behind the LED. The flux recuperator is provided to ensure a divergence of the beam exiting the recuperator in a plane passing through the axis of the LED and parallel to the large dimension of the elongate beach, and to ensure a substantially parallel beam (collimation) in a plane passing through the LED axis and orthogonal to the large dimension of the elongated beach. Generally, the plane parallel to the axis of the LED and the large dimension is horizontal and the beam leaving the recuperator is divergent in the horizontal plane, while this beam is parallel in the vertical plane. According to a first possibility, the rear face of the recuperator gives a substantially parallel beam while the dioptre of the front face of the output is provided to give a divergent beam appearing to come from a point on the axis of the LED behind the LED, preferably close to or coincident with the focus of the reflector. According to another possibility, the rear face of the recuperator is provided to allow a collimation in a vertical plane and a divergence of the beam in the horizontal plane, the front face of the recuperator being provided to avoid deflecting the rays reflected by the back side. The rear face can be formed by a quadric whose cut by a vertical plane is a parabola, and the cut by a horizontal plane is a hyperbola. The exit face is advantageously cylindrical, identical to the wave surface to no longer deform the beam. The surface of the reflector and / or the output face of the recuperator s may comprise tori to complete the distribution of light in the grid of the optical function. The signaling light according to the invention can, in particular, be applied to a change of direction indicator, a daytime running light (DRL), a position light, a fog light or a stop light. In the case where it is desired to provide a lateral signaling light with a hidden light source, the reflector has a parabolic horizontal section admitting an axis parallel to the axis of the LED, this assembly giving an outgoing beam which, after converging to the focus of the parabola, diverges in a cross beam from this focus, the set being such that the cross beam has the appropriate angles. Preferably, the surface of the reflector is composed of several parabolic sectors admitting the same axis parallel to the axis of the LED and whose foci located on this axis can be merged or distributed on the parallel axis to ensure good illumination.

The invention consists, apart from the arrangements set forth above, of a number of other arrangements which will be more explicitly discussed below with respect to embodiments described with reference to the accompanying drawings, but which do not are in no way limiting. In these drawings: FIG. 1 is a schematic elevational view of an elongate beach to be illuminated. Fig. 2 is a schematic horizontal section of a signaling light module according to the invention for illuminating a beach according to FIG. 1. Fig. 3 is a diagram illustrating, in a horizontal plane, the deflection of a light beam by the exit face of the recuperator of FIG. 2. Fig. 4 is a section in a vertical plane along the line IV-IV of FIG. 2, of the module. Fig. 5 is a schematic perspective view from above of the module of FIG. 2 whose parabolic reflector comprises tori for the distribution of light. Fig. 6 shows, similarly to FIG. 5, a variant according to which cores are provided on the output face of the recuperator. Fig. 7 is a horizontal section of an alternative embodiment according to 2906009 4 which the divergence of the beam leaving the recuperator is obtained by the rear face. Fig. 8 is a section of the module of FIG. 7 by a vertical plane passing through the line VIII-VIII of FIG. 7.

Fig. 9 is a diagram in a vertical plane passing through the axis of the LED of FIG. 7, illustrating the deviation of the light rays by the rear face of the recuperator. Fig. 10 is a simplified diagram showing elements of FIG. 9. Fig. 11 is a schematic horizontal section of the rear face of the recuperator of FIG. 7 illustrating the path of light rays that diverge at the output. Fig. 12 is a schematic horizontal section, with part in perspective, of a lateral signaling light according to the invention. Fig. 13 is a schematic plan view of the light beams 15 produced by the light of FIG. 12, and FIG. 14 is a diagrammatic elevational view of the recuperator and the fire reflector of FIG. 12. Referring to Fig. 1 of the drawings, there is shown an elongated beach A, shown rectangular for simplicity but of oval shape in general, the large dimension of which is horizontal and the small vertical dimension. This range A is desired to be made illuminating by using a light source S, formed by a light-emitting diode 1 or LED, arranged laterally with respect to the range A. A problem of distribution of the flux and light output exists with conventional optics, since from the center of the source S, the angle Q under which a vertical band of the range A is seen decreases as a function of the distance from this band as illustrated by the angles S2 1 and Q 2. When the illuminating surface A is obtained by using a reflector R (FIG 2), as shown for example by EP 0 830 984, an optical part Q arranged in front of the LED can be provided. According to EP 0 830 984, the optical part is designed to collimate the beam and to output a parallel beam. The width of the beam reflected by the reflector R, that is to say its dimension in the horizontal direction of the range A, is limited by the width of the parallel beam coming out of the optical part.

According to the invention, to obtain an illuminating surface A of elongate shape, generally oval, with a good distribution of light on the reflector, the optical part Q is formed by a flux recuperator G, of the Ga-ring type, which surrounds the XX axis of the LED. The windshell Ga is made of a transparent material having a refractive index greater than that of air. The windshell Ga has a well-shaped inlet face 2 which covers the transparent hemispherical dome 1a of the LED 1. The entrance face comprises a substantially cylindrical peripheral wall 2a, in particular with an oval, or slightly frustoconical, cross-section. The generatrices of the wall 2a are substantially parallel to the X-X axis of the LED. The well 2 has a bottom 2b remote from the LED 1. The well 2, by its surfaces 2a and 2b, is designed to collect a maximum of the flow of the LED 1, in particular the portion of the flux corresponding to radii coming out of the LED at an angle greater than 45% relative to the axis XX. The windshell Ga has a rear face 3 of reflection inclined on the X-X axis and a front exit face 4 forming a diopter between the air and the transparent material of the windshield. A windshield of this type is shown by EP 1 338 844 in the name of the same applicant company. The faces of the recuperator G are provided, not only to collect a maximum of the luminous flux of the LED 1, but also to ensure, in combination with the reflector R, the desired spreading of the beam E reflected by the reflector R (FIG. .

According to the embodiment of FIG. 2, the input face 2a, 2b and the rear face 3 of the recuperator are provided so that the beam reflected by the rear face 3 is substantially parallel around the axis X-X. The exit face 4 is provided so that its section by a horizontal plane, as illustrated in FIG. 2, transforms the incident parallel beam into a diverging outgoing beam 5 whose extreme radii 5a, 5b in the horizontal plane fall on the reflector R in the vicinity of the extreme vertical edges of the reflector R. Thus, the beam 5 fully illuminates the reflector R The beam 5 appears to originate from a virtual point 6 located on the axis XX behind the LED 1. Preferably, the reflector R is a cylinder with a horizontal parabolic section and vertical generators. The horizontal parabolic section of the reflector has a focal point F coinciding with the point 6, or close to this point 6. The extreme rays 5a, 5b are reflected by the reflector R along parallel or substantially parallel radii 7a, 7b. The spacing of the rays 7a, 7b corresponds to the large horizontal dimension of the reflector.

Fig. 3 illustrates the deflection, in the horizontal plane, provided by the exit face 4. A light ray 8, parallel to the axis XX and propagating in the transparent material of the windshell Ga, is refracted at the crossing of the diopter 4 according to a radius 9 in the air. The ray 9 seems to come from the virtual point 6.

The transparent material of the windshell Ga may be a plastic material, in particular PMMA (polymethyl methacrylate) or PC (polycarbonate), or glass. The beam E returned by the reflector R is oriented transversely to the X-X axis, almost perpendicular to this axis. In section along a vertical plane passing through the X-X axis and as illustrated in FIG. 4, the extreme rays 10, 11 of the beam coming out of the lens Ga are parallel, horizontal, and distant from the height corresponding to that of the illuminating strip A. A vertical section of the diopter 4 by a plane passing through the axis of the LED or parallel to this axis is practically a vertical straight line as illustrated in FIG. 4 so that a horizontal radius does not undergo deviation in the vertical plane. To complete the light distribution in the optical function gate, tori, or more precisely ring segments 12, may be provided on the surface of the reflector R as shown in FIG. 5. Alternatively, or in addition, may be provided ring segments 13 on the outlet face 4 of the windshell Ga as shown in FIG. 6. The large radius of curvature of the tori are located in vertical planes while the smaller radii of curvature, corresponding to a more pronounced curvature, are located in the horizontal planes to accentuate the divergence of the beam in the horizontal plane. The toric surfaces 12, 13 may be replaced by cylindrical surfaces whose generatrices are vertical with horizontal sections with a relatively small radius of curvature. The realization of Figs. 2 to 4 corresponds to a solution according to which the windshell Ga has a surface of sorb 4 (or more if it is fresnelized) which ensures the distribution in horizontal (longest dimension) in all the surface of the reflector. The entrance and rear surfaces of the windscreen ensure collimation of the light rays in the windshield material along the axis of the windscreen. Then, in horizontal section, at the crossing of the output diopter, the rays diverge from a virtual point 6 which can be placed more or less far from the LED. To obtain an overall result with a collimated reflected beam, the surface of the reflector R is a parabola focused at the virtual point 6. This combination makes it possible to obtain a high-performance value of the illumination in the axis of the function. According to an alternative embodiment corresponding to FIGS. 7 to 11, the divergence of the beam emerging from the roller Gal is ensured by the combination of the input face 102 and the rear face 103, while the exit face 104 is designed not to deform the beam substantially. . The combination of the input face 102 and the back face 103 is calculated to provide collimation in a vertical plane and divergence of the beams in the horizontal plane. The problem to be solved is to determine a rear surface 103 constituting a reflector such that: in a vertical plane passing through the axis XX of the LED, all the rays arriving on the rear face of the mirror Gal are reflected in parallel with the axis, that is to say, collocated, to cover the low height of the output reflector R; in a horizontal plane, all the rays arriving on the rear face 103, after reflection on this rear face must appear to come from a virtual point 106 located on the axis behind the source S.

Fig. 8 and FIG. 9 correspond to vertical sections passing through the X-X axis. The detail of the path followed by the light rays coming out of the mirror Gal parallel to the axis is illustrated in FIG. 9. A ray from the source S propagates in the air in the well 102 and meets the substantially cylindrical peripheral surface 102a.

Upon entering the transparent material of the windshield the spoke is refracted along r1 which falls on the reflecting back face 103. Preferably, the reflection is obtained by internal reflection. The rear face 103, in the vertical section, is calculated so that the radius r1 is reflected along a radius ul parallel to the optical axis.

A radius i2 from the source and falling on the bottom 102b of the well is refracted, in the material of the windshield, along a radius r2 substantially parallel to the axis of the LED. Surface 102b is determined accordingly. In vertical section, the exit face 104 is a vertical line orthogonal to the axis and substantially orthogonal to the reflected rays u1 and r2. These rays pass through the exit face 104 without undergoing significant deflection. In a horizontal plane, corresponding to the horizontal sections of Figs. 10 and 11, a radius such that r3 (Fig. 11) falling on the rear face of the windshield is reflected along a radius u3 which seems to come from the point 106 (Fig.10) 35 located behind the source, on the axis. The horizontal section of the outlet face 104 of the windshield is provided to not substantially deform the beam passing through the material of the windshell Gal. There is shown at 14 a ray from the source and falling on the bottom 102b whose section by the horizontal plane is convex towards the source to allow a slight collimation. The radius i4 is deflected according to r4 in the material of the windshield. The convexity of the bottom 102b is provided so that the radius r4 is perpendicular to the exit face.

In order that, in a horizontal plane, all the rays appear to come from point 106 after reflection, the wave surface H (Fig. 10) must be a cylinder whose director is a vertical line passing through the point. 106. In writing the conservation of the optical path between the source and the wave surface one can determine the rear surface 103 of the windshield. The resulting surface is a quadric whose cross-section through the optical axis (see Figs 8 and 9) is a parabola, while the section in a horizontal plane passes through the optical axis (see Figs. 10 and 11) is a hyperbole. In addition, it is advisable to: have a cylindrical exit face 104 identical to the wave surface H so as to no longer deform the beam and thus limit as much as possible the losses of Fresnel related to the plastic interfaces of the windshield-air; to have a light entry corresponding to a cone making it possible to let the rays which go towards the rear face pass, followed by a surface making it possible to work the rays which are not reflected by the rear face. Referring to Figs. 12 to 14 can be seen a lateral traffic light in a configuration where the light source is hidden by a mask M tunnel. The light source S is still constituted by an LED 201 25 capped by a G light flux recuperator constituted by a Ga2 windshield of the same kind as that of previous embodiments. The X-X axis of the diode and the windshield is substantially parallel to a transparent wall 14 closing the volume in which is installed the light source and the windshield.

The design constraints of a side marker light are to produce a beam which distributes the light in a large photometric field in the horizontal plane without the need for a maximum intensity value. In the case envisaged of FIGS. 12-14, the horizontal field J is between -30 and 45 with respect to a given direction. The horizontal angular field J is therefore about 75. Although the invention is described with regard to a type of optics applied to a lateral signaling light, the invention also applies to optics for which a large angular field of view is needed.

The lens Ga2 is provided to output a parallel beam in the horizontal plane. A reflector R2 with parabolic horizontal section, having an N-N axis parallel to that of the windshield Ga2 is placed in front of this windshield. The N-N axis is generally outside, that is to say on the side of the wall 14 opposite to that where the windshield Ga2 is located. The reflector R2 is advantageously constituted by a series of reflective arches 15a, 15b ... 15h, connected by optically neutral surfaces 16a, 16b, which are essentially parallel to the wall 14. part of the parabolas to which successive arcs belong 15a, 15b ... All these parabolas have the same axis NN. The parabolic foci are located on the N-N axis. These foci may be close to the point F corresponding to the focus of the parabola closest to the windshield Ga2, or coincide with this point F. As illustrated in FIG. 13, each reflecting arc 15a ... 15h transforms an incident beam parallel to the axis of the parabola into a beam converging towards the corresponding focal point. The set gives, as visible in FIG. 13, several beams that intersect. The foci of the parabolas 15a, ... 15h are placed in such a way that the resulting cross beam J has an aperture angle corresponding to the angular field which is to be illuminated in the signaling function under consideration. The successive sectors 15a, 15b, ... 15h are offset relative to each other in a direction transverse to the parallel beam coming out of the windshield Ga2. For the vertical definition of the surfaces of the reflector, as illustrated in FIG. 14, a revolution is made more or less close to the multiparabules 15a, 15b ... 15h to obtain the vertical aperture a of the beam requested for the "lateral traffic light" function. In the example considered, the vertical aperture a is 10 relative to the horizontal.

Claims (11)

  1. A lighting and / or signaling device, in particular a signaling light, in particular for a motor vehicle, which comprises: a light source formed by at least one light-emitting diode, or LED, emitting a beam oriented essentially along the axis of the LED, - an optical part arranged in front of the light-emitting diode to collimate the beam, - and a reflector arranged to receive the beam coming out of the optical part to reflect it in a transverse direction, in particular substantially 90, relative to to the axis of the LED, the reflector having an elongate shape with a dimension transverse to the axis of the LED smaller than the longitudinal dimension, characterized in that the optical part (Q) is formed by a flux recuperator (G), of the windshield type (Ga, Gal, Ga2), which surrounds the axis of the LED, made of a transparent material having a refractive index greater than that of the air, and which comprises: - a well-shaped entrance face (2, 102) which caps the LED, with a peripheral wall (2a, 102a) surrounding the axis of the LED, 20 - a rear reflection face (3, 103) inclined on the axis of the LED, - and an exit front face (4,104) forming an optical surface, the faces of the recuperator (G) being provided to collect a maximum of the luminous flux of the LED and to ensure, in combination with the reflector, the desired spreading of the beam reflected by the reflector, the distribution of the light produced by the recuperator preferably not symmetrical of revolution with respect to the axis of the LE D.
  2. Device according to claim 1, intended to illuminate an elongated range (A) with a dimension much smaller than the other orthogonal dimension, characterized in that the section of the reflector (R) by a plane parallel to the axis of the LED and the large dimension of the extended beach is parabolic with a focus (F) located on the axis of the LED behind the LED (1, 101), and the flux recuperator (G) is provided for ensure a divergence of the beam exiting the recuperator in a plane passing through the axis of the LED and parallel to the large dimension of the elongate range, and to ensure a substantially parallel beam (collimation) in a plane passing through the axis of the LED and orthogonal to the large dimension of the elongated beach. 2906009 He
  3. Device according to claim 2, wherein the plane parallel to the axis of the LED and to the large dimension of the rectangular range is horizontal, characterized in that the beam (5) leaving the recuperator is divergent in the horizontal plane. , while this beam is parallel in the vertical plane. 5
  4. Device according to claim 2, characterized in that the rear face (3) of the reflector gives a substantially parallel beam while the dioptre (4) of the front exit face is provided to give a divergent beam appearing to come from a point (6) located on the LED axis behind the LED, adjacent to, or coincident with, the focus (F) of the reflector.
  5. Device according to claim 3, characterized in that the rear face (103) of the recuperator is provided to ensure a collimation in a vertical plane and a divergence of the beam in the horizontal plane, the front face (104). the recuperator being provided to avoid deflecting the rays reflected by the rear face.
  6. Device according to claim 5, characterized in that the rear face (103) is formed by a quadric whose cutting in a vertical plane is a parabola, and the section through a horizontal plane is a hyperbola.
  7. Device according to claim 5 or 6, characterized in that the output face is cylindrical, identical to the wave surface (H) to no longer deform the beam.
  8. Device according to any one of the preceding claims, characterized in that the surface of the reflector and / or the output face of the recuperator comprise cores (12,13) to complete the light distribution in the grid of the optical function . 30
  9. Lateral device according to claim 1, with hidden light source, characterized in that the reflector (R2) has a parabolic horizontal section admitting an axis (NN) parallel to the axis of the LED, this assembly giving an outgoing beam which after converging to the focus of the dish, it diverges in a cross beam (J) from that focus, the set being such that the cross beam has the appropriate angles.
  10. Device according to claim 9, characterized in that the surface of the reflector is composed of several parabolic sectors (15a, 15b, ...) admitting the same axis parallel to the axis of the LED and whose foci located on this axis can be confused or distributed on the parallel axis to ensure good illumination.
  11. Application of a device according to any one of the preceding claims to a change of direction indicator, daytime running light (DRL), position lamp, fog light or brake light.
FR0608194A 2006-09-19 2006-09-19 Lighting and / or signaling device for a motor vehicle. Expired - Fee Related FR2906009B1 (en)

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FR0608194A FR2906009B1 (en) 2006-09-19 2006-09-19 Lighting and / or signaling device for a motor vehicle.

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Application Number Priority Date Filing Date Title
FR0608194A FR2906009B1 (en) 2006-09-19 2006-09-19 Lighting and / or signaling device for a motor vehicle.

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FR2906009B1 FR2906009B1 (en) 2008-12-26

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010103430A1 (en) * 2009-03-10 2010-09-16 Koninklijke Philips Electronics N. V. Lighting device for an automobile

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GB2282700A (en) * 1993-10-01 1995-04-12 John Herbert Brown Optical element for use with an LED
EP0766037A1 (en) * 1995-09-27 1997-04-02 MAGNETI MARELLI S.p.A. Lighting device that can be constructed with reduced thickness, especially a headlamp or other external vehicle lamp
US5894196A (en) * 1996-05-03 1999-04-13 Mcdermott; Kevin Angled elliptical axial lighting device
WO2000024062A1 (en) * 1998-10-21 2000-04-27 Koninklijke Philips Electronics N.V. Led module and luminaire
EP1258395A2 (en) * 2001-05-18 2002-11-20 C.R.F. Società Consortile per Azioni A lighting device, particularly a motor vehicle light or emergency light
US20030156416A1 (en) * 2002-02-21 2003-08-21 Whelen Engineering Company, Inc. Led light assembly
US20040070855A1 (en) * 2002-10-11 2004-04-15 Light Prescriptions Innovators, Llc, A Delaware Limited Liability Company Compact folded-optics illumination lens
EP1519107A1 (en) * 2003-09-23 2005-03-30 Hella KGaA Hueck & Co. Vehicle lamp
WO2005036054A1 (en) * 2003-10-10 2005-04-21 Federal Signal Corporation Light assembly

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2282700A (en) * 1993-10-01 1995-04-12 John Herbert Brown Optical element for use with an LED
EP0766037A1 (en) * 1995-09-27 1997-04-02 MAGNETI MARELLI S.p.A. Lighting device that can be constructed with reduced thickness, especially a headlamp or other external vehicle lamp
US5894196A (en) * 1996-05-03 1999-04-13 Mcdermott; Kevin Angled elliptical axial lighting device
WO2000024062A1 (en) * 1998-10-21 2000-04-27 Koninklijke Philips Electronics N.V. Led module and luminaire
EP1258395A2 (en) * 2001-05-18 2002-11-20 C.R.F. Società Consortile per Azioni A lighting device, particularly a motor vehicle light or emergency light
US20030156416A1 (en) * 2002-02-21 2003-08-21 Whelen Engineering Company, Inc. Led light assembly
US20040070855A1 (en) * 2002-10-11 2004-04-15 Light Prescriptions Innovators, Llc, A Delaware Limited Liability Company Compact folded-optics illumination lens
EP1519107A1 (en) * 2003-09-23 2005-03-30 Hella KGaA Hueck & Co. Vehicle lamp
WO2005036054A1 (en) * 2003-10-10 2005-04-21 Federal Signal Corporation Light assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010103430A1 (en) * 2009-03-10 2010-09-16 Koninklijke Philips Electronics N. V. Lighting device for an automobile

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