EP2442013B1 - Lighting device for a motor vehicle with a semiconductor light source and a reflector - Google Patents
Lighting device for a motor vehicle with a semiconductor light source and a reflector Download PDFInfo
- Publication number
- EP2442013B1 EP2442013B1 EP11184485.8A EP11184485A EP2442013B1 EP 2442013 B1 EP2442013 B1 EP 2442013B1 EP 11184485 A EP11184485 A EP 11184485A EP 2442013 B1 EP2442013 B1 EP 2442013B1
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- EP
- European Patent Office
- Prior art keywords
- light
- reflector
- lighting device
- light guide
- face
- 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.)
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Classifications
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- 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
- F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
- F21S41/141—Light emitting diodes [LED]
- F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
- F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/24—Light guides
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
- F21S41/28—Cover glass
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations
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- 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
- F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
- F21S43/13—Signalling 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
- F21S43/14—Light emitting diodes [LED]
-
- 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
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/235—Light guides
- F21S43/251—Light guides the light guides being used to transmit light from remote light sources
-
- 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
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
Definitions
- the present invention relates to a lighting device for a motor vehicle according to the preamble of claim 1.
- a lighting device for a motor vehicle according to the preamble of claim 1.
- Such lighting device is known from DE 10 2008 012 195 A1 known.
- the structure of another known illumination device follows the principle of generating a light distribution through a parabolic reflector.
- a parabolic reflector surrounds the semiconductor light source, which is arranged as accurately as possible at its focal point.
- the light emitted by the semiconductor light source is then parallelized by the reflector and directed onto a transparent pane which covers a light exit opening of the illumination device.
- the parabolic basic shape of the reflector for example by a subdivision of the parabolic in general parabolic basic shape of the reflection surface of the reflector in individual facets and / or by scattering elements in the transparent disc, which cause a change in the direction of the light passing through the disc, a predetermined light distribution is generated in advance of the illumination device.
- One known countermeasure is the use of comparatively short focal length paraboloids.
- the focal length of a parabola corresponds to the distance of its focal point from the vertex.
- other disadvantages must be taken into account: Either the luminous light exit surface is comparatively small or the required depth is comparatively very large.
- each semiconductor light source appears as a bright spot.
- the aim is a homogeneously luminous surface.
- the comparatively large distance also reduces the larger heat load at a smaller distance, which results from the electrical heat loss which is released in the chip of the semiconductor light source and heats it.
- the lighting device behaves opposite Positioning inaccuracies of the real semiconductor light source very tolerant, since the light entrance surface of the light guide is flat.
- Another advantage of the planar light entry surface is that a planar board can be used as a carrier of the chip of the semiconductor light source.
- Flat sinkers are cheaper and more robust than flexible foldable sinkers, so they can be handled with less effort in manufacturing. Along with the reduced requirement for positioning accuracy, this simplifies manufacturing, which has a cost-reducing effect.
- focal line of the reflector results in a very homogeneous illumination of the light exit surface of the illumination device.
- the focal points be it individual points, a continuous line or a contiguous surface, ideally lie in the light exit surface.
- the advantages of the invention also remain to a significant extent when the focal points are slightly in front of or slightly behind the light exit surface.
- the illumination device requires only a small, planar circuit board with one or more semiconductor light sources, the light guide and a single reflector and a cover plate. Overall, comparatively large, homogeneously illuminated light exit surfaces can thus be achieved with comparatively little effort.
- the semiconductor light sources used for automotive lighting devices are often light-emitting diodes (LED) with a comparatively flat light exit surface, which can be arranged very close to the planar light input surface of the light guide. This allows a touching or at least almost touching arrangement of the semiconductor light sources on the coupling surface. This allows almost complete, only unavoidable Fresnel losses in purchasing coupling of the light in the light guide, which positively affects the efficiency.
- LED light-emitting diodes
- the shows Fig. 1 an illumination device 10 for a motor vehicle with a semiconductor light source 12 and a reflector 14.
- the illumination device 10 has a light 16 of the semiconductor light source receiving and on the reflector 14 directing optical fiber 18.
- the light guide 18 has a planar, light 16 of the semiconductor light source 12 receiving light entrance surface 20 and a curved light exit surface 22.
- the reflector 14 has a basic shape, which is formed by pivoting a parabola section 24 about an imaginary axis 26.
- the light guide 18 and the reflector 14 are arranged relative to each other, and the light exit surface 22 of the light guide 14 is curved so that a focal line 28 of the reflector 14, which results during pivoting by the movement of the focal point 30 of the parabola section 24 in the Light exit surface 22 is located.
- the light exit surface 22 preferably has the shape of a part of a cylinder jacket which is delimited by two parallel circular arcs 22_1, 22_2 and by two straight line sections 22_3, 22_4.
- the entire light entering the light guide 18 in this plane is directed onto the reflector 14 and deflected by it in the direction of the imaginary axis 26.
- the entire volume of the light guide 18 is not used for the conduction of the light 16 of the light source 12 from its light entry surface 20 to its light exit surface 22.
- the unused partial areas 18_1 and 18_2 are determined by the opening angle of the light propagating in the optical waveguide 18, which in the subject matter of Fig. 1 is limited by the radians of the circular arcs 22_1, 22_2.
- the non-used for the light pipe sections 18_1, 18_2 of the Light guide 18 are used in one embodiment for fastening purposes and may alternatively be omitted.
- a cover plate 32 which lies in the light propagation direction above the reflector 14 and which, for example, on its reflector 14 facing surface scattering elements 34 which bulge out convexly from the cover, in one embodiment, a prescribed light distribution from the substantially parallel light beam, the emanating from the reflector 14 generates.
- the scattering elements 34 are spherical in a preferred embodiment.
- Fig. 2 shows an alternative embodiment with a flat, no scattering elements having cover plate 38, in which the statutory light distribution is achieved by a faceting of the reflector 14.
- the respective value of the slope ultimately results from the required light distribution. For example, if light distribution with a bright spot in the extension of the central optical axis 26 is out of Fig. 1 required, a corresponding amount of reflector surface and a concomitant large number of facets 40, 44 must be present with a comparatively steeper course than corresponds to the parabola section 24.
- a third embodiment provides a combination of a diffuser 34 having cover 32 with a Facet 40, 42, 44 having reflector 14 before.
- the deflection angle of facets and diffusers add up, so that overall results in a stronger deflection and generally a greater freedom in the design.
- FIG. 3 shows a plan view of a light guide having a straight and parallel to a straight light entrance surface 48 extending light exit surface 50, together with a light beam 52.
- the light beam 52 emanates from a lightly arranged in front of the light entrance surface 48 semiconductor light source 12, is on the light entrance surface 48 in coupled to the light guide 46 and coupled out via the light exit surface 50 again.
- this constellation corresponds to the passage of light through a plane-parallel plate. This means that the opening angle of the light beam 52 in the light guide 46 is smaller than outside the light guide 46 and that the opening angle of the light beam 52 after exiting the light guide 46 is the same size as before the entrance into the light guide 46. In the drawing plane will find so no light bundling by the light guide 46 instead.
- FIG. 4 shows a light guide 54 of a preferred embodiment.
- the light guide 54 is characterized in that its light exit surface 58 is delimited by a circular arc, the center of the associated circle being defined by the semiconductor light source 12 arranged closely in front of the light entry surface 56, which may be imagined for this purpose as a punctiform light source.
- the individual rays of the light beam 52 each approximately perpendicular to the circular arc-shaped curved light exit surface 58 and therefore experience virtually no angle change when passing through this surface. Overall, however, results in a bundle constriction by occurring during coupling via the light entrance surface 56 refraction of light during the transition from air to optically dense light guide material.
- the Figures 3 and 4 thus show the beam path in a planar light guide and after the exit of the light from the light guide, wherein the exit surface in the case of FIG. 3 parallel to the entrance surface and in the case of Fig. 4 oriented at any point perpendicular to the direction of light.
- the light distribution emitted via the light exit surface 50 at the end of the optical waveguide 46 thus has the same angular distribution which comprises the light emitted by the semiconductor light source 12.
- the bundle constriction that occurs when entering the light guide 54, in the embodiment that in the FIG. 4 is shown, obtained at the exit.
- the FIG. 5 shows a preferred embodiment of a light guide 18 of an embodiment of the lighting device 10 in a cross section.
- the cross-sectional area is, for example, in the plane that in the FIG. 1 is defined by the semiconductor light source 12 and the parabola portion 24.
- the illustrated embodiment of the light guide 18 is characterized in that the distance from its upper side 60 to its lower side 62, starting from its light entry surface 20 and tapering towards the light exit surface 22, increases.
- the cross section has the illustrated trapezoidal shape, in which the shorter of the parallel sides of the trapezium in the light entry surface 20 and the longer of the parallel sides of the trapezium in the light exit surface 22 of the light guide 18 is located.
- the distance between the upper side 60 and the lower side 62 is selected such that the light emanating from the semiconductor light source 12 and coupled into the light guide 18 totally reflects upon impact with the underside 62 and / or the upper side 60 and thus ultimately leads to the light exit surface 22 is opposite to the light entrance surface 20. Due to the divergent arrangement of the upper side 60 and the lower side 62 of the light guide 18, the angle between a light beam 64 and a central propagation direction 66 or center line of the light guide 18 decreases with each total reflection. The propagating light in the light guide 18 is thus bundled with increasing approach to the light exit surface in the sense of approaching a bundle of parallel beams.
- the illustrated tilting of the two cover surfaces relative to one another causes the light beam 64 to move in the direction of a widening cross section.
- the beam is parallelized by twice the angle at which the two surfaces are inclined towards each other.
- FIG. 5 shows thus in particular the beam path in a plane which is perpendicular to the two top surfaces of the planar light guide.
- the coupled-in light 64 is transported to the light exit surface 22 by means of total reflection on the two cover surfaces, that is to say on the upper side 60 and on the underside 62. At the exit, bundle widening takes place again due to the refractive index change.
- Fig. 6 shows how in this way an area is created in which a light fan 65 exits from each point. Light of this fan of light is then by reflection at the reflector 14, which has a parabolic cross section and whose focus is preferably approximately in the center of the light exit surface 22 of the light guide 18 and thus approximately halfway between its top 60 and its bottom 62, in the desired Direction focused.
- FIG. 7 shows an embodiment with a reflector 67, the reflection surface in the space by a 360 ° around an axis 69 around pivoting around a parabola portion 24 is generated, as shown in the FIG. 1 has been illustrated and explained in the accompanying description.
- the light propagating in the light guide 18 has an opening angle of about 90 °.
- four semiconductor light sources 71, 73, 75, 77 arranged so that the opening angle of each lying in the circular light guide 79 light bundles 81 complement each other to a full circle.
- the circular light guide 79 whose geometry and arrangement relative to the reflector 67, moreover, preferably the geometry of the light guide 18 from the FIG. 1 and whose arrangement corresponds to the reflector 14, has a square recess in the middle. This recess is delimited by 4 surfaces on which the four semiconductor light sources 71, 73, 75, 77 are fixed, wherein each one of the semiconductor light sources 71, 73, 75, 77 is arranged on each surface.
- the circular light guide 79 with the four semiconductor light sources arranged in a central recess 71, 73, 75, 77 is the subject of FIG. 7 held by a spacer 83 and the reflector 67 supporting support structure in a defined position relative to the reflector 67.
- the holding position meets the corresponding features of claim 1.
- FIG. 7 illustrated circular geometry is used to produce a homogeneously illuminated ring and / or circular area, the desired light distribution here also by a diffuser, not shown in the FIG. 1 illustrated and explained in the accompanying description type and / or can be generated by a reflector with facets.
- a triangular, a pentagonal or a hexagonal recess in the light guide 79 may be used with a corresponding number of semiconductor light sources to achieve an appearance of the lamp with a desired homogeneity.
- the homogeneity increases in principle with the number of coupling in different directions semiconductor light sources.
- FIG. 8 shows a plan view of a lighting device with three modules 90, 92, 94 in the FIG. 1 illustrated and explained in the accompanying description type, not here, as in the subject matter of FIG. 7 , with a uniform curvature of its edges to a circle, but with an alternating change of the curvature of the sign of its edges, so with a change between right curvature and left curvature, to an S-shaped light assembly have been composed.
- the design, in the FIG. 8 has three semiconductor light sources 96, 98, 100, three planar light guides 102, 104, 106 and three reflector sections 108, 110, 112.
- Each of a semiconductor light source 96, 98, 112 is functionally associated with a light guide 102, 104, 106 and a reflector section 108, 110, 112, wherein the geometries and relative arrangement of a semiconductor light source 96, 98, 100 to their optical fibers 102, 104, 106 and the Geometry of the light guide 102, 104, 106 and its arrangement relative to the associated reflector portion 108, 110, 112 in conjunction with the FIG. 1 corresponds to the relationships described.
- the curvature does not have to change its sign from module to module 90, 92, 94, but it can also connect one or more modules with a first curvature behavior to one or more modules with a second curvature behavior.
- a rectangular cover lens can also be illuminated homogeneously by a design of a lighting device according to the invention.
- Fig. 9 shows a plan view of a lighting device 114 which is adapted to illuminate a rectangle 116 homogeneously.
- a reflector 117 as in the FIG. 1 is shown in several Segments 118, 120, 122, 124, 126 split.
- the subject matter of the FIG. 9 on the object of FIG. 1 This applies in particular to the relationships of geometry and arrangement of semiconductor light source, light guide and reflector, as they are described in the FIG. 1 are illustrated and explained in more detail in the accompanying description.
- the following presentation focuses on deviations of the objects of Figures 9 and 10 from the subject of FIG. 1 ,
- the division of the reflector 117 takes place at the subject of FIG. 9 preferably as it is in the FIG. 9 illustrated by the example of five segments 118, 120, 122, 124, 126.
- the number of segments deviates from the number five and may also be less than or greater than five.
- the angles at which the reflector segments 118, 120, 122, 124, 126 each appear from the semiconductor light source 12, are the same size. Therefore, when the brightness distribution of the radiation emitted by the semiconductor light source 12 is isotropic relative to the angle, the segments 118, 120, 122, 124, 126 receive approximately the same amount of light from the semiconductor light source 12.
- the angular boundaries between the individual segments 118, 120, 122, 124, 126 are marked by radial rays emanating from the light source 12, which in this context can again be regarded as a point light source.
- the top view of FIG. 9 an upper circular ring and a lower circular ring are determined such that these circular arcs touch the respective segment in each case at one point.
- Each reflector segment 118, 120, 122, 124, 126 is thus delimited by an upper and a lower circular arc section and by two radial beams.
- FIG. 10 shows a perspective view of such a trimmed reflector 117 below a rectangular cover plate 128th
- FIG. 11 shows an embodiment in which the light exit surface 22 of the light guide 18 partially convex scattering elements 130, in some areas no scattering elements and partially concave scattering elements 132 has.
- the prescribed light distribution is generated in the context of this embodiment, or at least the generation of the prescribed light distribution is supported.
- FIG. 12 shows a cross section through an optical fiber 18.1 of a further embodiment, wherein the cross section is here oriented so that it lies for example in the plane in which the parabola section 24 of FIG. 1 lies.
- FIG. 12 shows, in particular, the possibility of producing a further light exit surface 22.10 of a light guide in order to further increase the homogeneously illuminated surface.
- the further light exit surface 22.10 in the embodiment shown is located below the first light exit surface 22 with respect to the light emission direction 134 of the illumination device a separate, their associated reflector 14.1, which is illuminated only by the light exiting via the second light exit surface 22.10.
- the geometry used to generate the second light exit surface 22.10 which in the embodiment of FIG. 10 is shown as stage 136, also be arranged above the first light exit surface 22.
- stage 136 also be arranged above the first light exit surface 22.
- An attenuation associated with this traversing by absorption within the optical waveguide 18.1 and by Fresnel losses when entering from below into the optical waveguide 18.1 and when exiting upwards from the optical waveguide 18.1 can then be avoided.
- FIGS. 13 and 14 illustrate various ways of adapting the space requirements of embodiments of lighting devices according to the invention to the available space, which may be limited for example by design specifications.
- the adaptation by an obliquely and substantially parallel to an obliquely arranged in the space cover 140 of a lamp or a headlight arrangement of the planar light guide 18.
- the subject of FIG. 12 the adjustment is done by a corresponding curvature of the light guide 18th
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- Non-Portable Lighting Devices Or Systems Thereof (AREA)
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Description
Die vorliegende Erfindung betrifft eine Beleuchtungseinrichtung für ein Kraftfahrzeug nach dem Oberbegriff des Anspruchs 1. Eine solche Beleuchtungseinrichtung ist aus der
Der Aufbau einer weiteren bekannten Beleuchtungseinrichtung folgt dem Prinzip der Erzeugung einer Lichtverteilung durch einen parabolischen Reflektor. Ein solcher Reflektor umgibt die Halbleiterlichtquelle, die möglichst genau in seinem Brennpunkt angeordnet ist. Das von der Halbleiterlichtquelle abgestrahlte Licht wird dann durch den Reflektor parallelisiert und auf eine transparente Scheibe gerichtet, die eine Lichtaustrittsöffnung der Beleuchtungseinrichtung abdeckt. Durch eine Variation der parabolischen Grundform des Reflektors, zum Beispiel durch eine Unterteilung der im Ganzen parabolischen Grundform der Reflexionsfläche des Reflektors in einzelne Facetten und/oder durch Streuelemente in der transparenten Scheibe, die eine Änderung der Richtung des durch die Scheibe hindurchtretenden Lichtes bewirken, wird eine vorbestimmte Lichtverteilung im Vorfeld der Beleuchtungseinrichtung erzeugt.The structure of another known illumination device follows the principle of generating a light distribution through a parabolic reflector. Such a reflector surrounds the semiconductor light source, which is arranged as accurately as possible at its focal point. The light emitted by the semiconductor light source is then parallelized by the reflector and directed onto a transparent pane which covers a light exit opening of the illumination device. By a variation of the parabolic basic shape of the reflector, for example by a subdivision of the parabolic in general parabolic basic shape of the reflection surface of the reflector in individual facets and / or by scattering elements in the transparent disc, which cause a change in the direction of the light passing through the disc, a predetermined light distribution is generated in advance of the illumination device.
Bei der Realisierung dieses Prinzips treten in der Praxis die folgenden Probleme auf: Ein beträchtlicher Teil des von der Halbleiterlichtquelle ausgehenden Lichtes trifft gar nicht erst auf die Parabel. Es wird daher zum Beispiel nicht parallel ausgerichtet, und es erhält daher beim Durchgang durch die zum Beispiel für das Streuen von parallelem Licht eingerichtete Abdeckscheibe nicht die Richtung, die der gewünschten Lichtverteilung entspricht.In realizing this principle, the following problems arise in practice: a considerable part of the light emanating from the semiconductor light source does not even strike the parabola. Therefore, for example, it is not aligned in parallel, and therefore does not receive the direction corresponding to the desired distribution of light when passing through the cover panel, for example, for scattering of parallel light.
Dies führt letztlich dazu, dass der Anteil des korrekt verteilten Lichtes der Halbleiterlichtquelle an dem insgesamt von der Halbleiterlichtquelle abgestrahlten Licht vergleichsweise klein ist, was durch eine Erhöhung der abgestrahlten Lichtleistung und damit in der Regel durch eine Erhöhung der Zahl der Halbleiterlichtquellen ausgeglichen werden muss.This ultimately leads to the fact that the proportion of the correctly distributed light of the semiconductor light source to the total emitted by the semiconductor light source light is relatively small, which must be compensated by increasing the radiated light output and thus usually by increasing the number of semiconductor light sources.
Eine bekannte Gegenmaßnahme besteht in der Verwendung von Paraboloiden mit vergleichsweise kurzer Brennweite. Die Brennweite einer Parabel entspricht dem Abstand ihres Brennpunktes vom Scheitelpunkt. Für den erwünschten Nutzen müssen dabei jedoch andere Nachteile in Kauf genommen werden: Entweder wird die leuchtende Lichtaustrittsfläche vergleichsweise klein oder die benötigte Bautiefe wird vergleichsweise sehr groß.One known countermeasure is the use of comparatively short focal length paraboloids. The focal length of a parabola corresponds to the distance of its focal point from the vertex. For the desired benefit, however, other disadvantages must be taken into account: Either the luminous light exit surface is comparatively small or the required depth is comparatively very large.
Unerwünscht ist auch, dass der untere Rand des durch eine metallische Beschichtung verspiegelten Reflektors bei einer Verkürzung der Brennweite näher an die Halbleiterlichtquelle und deren elektrische Zuleitungen heranrückt, was wegen der Gefahr von Kurzschlüssen unerwünscht ist.It is also undesirable for the lower edge of the reflector, which is mirrored by a metallic coating, to move closer to the semiconductor light source and its electrical leads as the focal length is shortened, which is undesirable because of the danger of short circuits.
Weitere Nachteile ergeben sich daraus, dass die Position der Halbleiterlichtquelle relativ zum Reflektor sehr genau eingehalten werden muss, um die erwünschte Parallelisierung zu erzielen. Da sich ein großes Spritzgussteil, in das mehrere Paraboloide eingeformt sind, beim Erkalten in schwer vorhersehbarer Weise verzieht, müssen in der Regel an Stelle von einem großen Reflektor viele kleine Reflektoren verwendet werden, was die Fertigung erschwert und verteuert.Further disadvantages arise from the fact that the position of the semiconductor light source relative to the reflector must be maintained very accurately in order to achieve the desired parallelization. Since a large injection molded part, in which several paraboloids are formed, warps on cooling in a difficult to predict manner, many small reflectors usually have to be used instead of a large reflector, which makes production more difficult and more expensive.
Die Kosten werden ferner dadurch erhöht, dass mehrere Halbleiterlichtquellen mit zugehörigem Reflektor und elektrischer Energieversorgung dreidimensional angeordnet werden müssen, um eine vergleichsweise große Lichtaustrittsfläche zu gestalten. Betrachtet man eine solche Beleuchtungseinrichtung aus einiger Entfernung, erscheint jede Halbleiterlichtquelle als ein heller Punkt. Angestrebt wird im Gegensatz dazu jedoch eine homogen leuchtende Fläche.The costs are further increased by the fact that a plurality of semiconductor light sources with associated reflector and electrical power supply must be arranged three-dimensionally to make a comparatively large light exit surface. Looking at such a lighting device from a distance, each semiconductor light source appears as a bright spot. In contrast, however, the aim is a homogeneously luminous surface.
Wenn an Stelle von üblichen Reflektoren brechende und total reflektierende Vorsatzoptiken für Halbleiterlichtquellen verwendet werden, treten dieselben Nachteile auf. Verwendet man für die Erzeugung einer homogen leuchtenden Lichtaustrittsfläche Lichtleiter an Stelle von Reflektoren, müssen große Wirkungsgradverluste (Verluste von 85% bis 90%) in Kauf genommen werden.If instead of conventional reflectors refractive and totally reflective attachment optics are used for semiconductor light sources, the same disadvantages occur. If, instead of reflectors, light guides are used to produce a homogeneously luminous light exit surface, large losses in efficiency (losses of 85% to 90%) must be accepted.
Vor diesem Hintergrund besteht die Aufgabe der Erfindung in der Angabe einer Beleuchtungseinrichtung der eingangs genannten Art, die diese Nachteile nicht oder nur in einem geringeren Umfang aufweist.Against this background, the object of the invention in the specification of a lighting device of the type mentioned, which does not have these disadvantages or only to a lesser extent.
Diese Aufgabe wird durch eine Beleuchtungseinrichtung mit den Merkmalen des Anspruchs 1 gelöst.This object is achieved by a lighting device having the features of
Durch diese Merkmale wird eine Beleuchtungseinrichtung mit einer virtuellen Lichtquelle bereitgestellt, die folgende Vorteile aufweist:
- Durch den im Lichtweg zwischen der Halbleiterlichtquelle und der als virtuelle Lichtquelle dienenden Lichtaustrittsfläche ist der Abstand zwischen dem metallisch verspiegelten Reflektor und den elektrischen Anschlüssen der Halbleiterlichtquelle vergleichsweise groß, was die Gefahr von Kurzschlüssen beseitigt.
- The distance between the metallically mirrored reflector and the electrical connections of the semiconductor light source is comparatively large due to the light exit surface serving as a virtual light source in the light path between the semiconductor light source and eliminating the risk of short circuits.
Darüber hinaus verringert der vergleichsweise große Abstand auch die bei einem kleineren Abstand größere Wärmebelastung, die sich aus der elektrischen Verlustwärme ergibt, die im Chip der Halbleiterlichtquelle frei wird und diesen erwärmt.In addition, the comparatively large distance also reduces the larger heat load at a smaller distance, which results from the electrical heat loss which is released in the chip of the semiconductor light source and heats it.
Die Beleuchtungseinrichtung verhält sich gegenüber Positionierungsungenauigkeiten der realen Halbleiterlichtquelle sehr tolerant, da die Lichteintrittsfläche des Lichtleiters eben ist. Ein weiterer Vorteil der ebenen Lichteintrittsfläche besteht darin, dass eine ebene Platine als Träger des Chips der Halbleiterlichtquelle verwendet werden kann. Ebene Platinen sind preiswerter und robuster als flexibel krümmbare Platinen, so dass sie bei der Fertigung mit weniger Aufwand handhabbar sind. Zusammen mit der verringerten Anforderung an die Positionierungsgenauigkeit vereinfacht dies die Fertigung, was sich kostensenkend auswirkt.The lighting device behaves opposite Positioning inaccuracies of the real semiconductor light source very tolerant, since the light entrance surface of the light guide is flat. Another advantage of the planar light entry surface is that a planar board can be used as a carrier of the chip of the semiconductor light source. Flat sinkers are cheaper and more robust than flexible foldable sinkers, so they can be handled with less effort in manufacturing. Along with the reduced requirement for positioning accuracy, this simplifies manufacturing, which has a cost-reducing effect.
Durch das Zusammenwirken der Merkmale, insbesondere durch die relativ zueinander sehr genau positionierbare Lichtaustrittsfläche der virtuellen Lichtquelle und der in der Lichtaustrittsfläche liegenden Brennlinie des Reflektors ergibt sich eine sehr homogene Ausleuchtung der Lichtaustrittsfläche der Beleuchtungseinrichtung. Die Brennpunkte, seien es einzelne Punkte, eine zusammenhängende Linie oder eine zusammenhängende Fläche, liegen im Idealfall in der Lichtaustrittsfläche. Die Vorteile der Erfindung bleiben aber auch in einem wesentlichen Umfang erhalten, wenn die Brennpunkte etwas vor oder etwas hinter der Lichtaustrittsfläche liegen.Due to the interaction of the features, in particular by the relative to each other very precisely positionable light exit surface of the virtual light source and lying in the light exit surface focal line of the reflector results in a very homogeneous illumination of the light exit surface of the illumination device. The focal points, be it individual points, a continuous line or a contiguous surface, ideally lie in the light exit surface. However, the advantages of the invention also remain to a significant extent when the focal points are slightly in front of or slightly behind the light exit surface.
Unabhängig von der Größe der möglichst homogen auszuleuchtenden Lichtaustrittsfläche benötigt die erfindungsgemäße Beleuchtungseinrichtung nur eine kleine, ebene Platine mit einer oder mehreren Halbleiterlichtquellen, den Lichtleiter und einen einzigen Reflektor und eine Abdeckscheibe. Insgesamt lassen sich vergleichsweise große homogen ausgeleuchtete Lichtaustrittsflächen damit mit einem vergleichsweise geringen Aufwand erzielen.Irrespective of the size of the light output surface, which is to be illuminated as homogeneously as possible, the illumination device according to the invention requires only a small, planar circuit board with one or more semiconductor light sources, the light guide and a single reflector and a cover plate. Overall, comparatively large, homogeneously illuminated light exit surfaces can thus be achieved with comparatively little effort.
Die für Kraftfahrzeugbeleuchtungseinrichtungen verwendeten Halbleiterlichtquellen sind häufig Leuchtdioden (LED) mit einer vergleichsweise ebenen Lichtaustrittsfläche, die sich sehr nahe an der ebenen Lichteinkoppelfläche des Lichtleiters anordnen lassen. Dies erlaubt eine berührende oder zumindest nahezu berührende Anordnung der Halbleiterlichtquellen an der Einkoppelfläche. Dies erlaubt eine nahezu vollständige, nur unvermeidliche Fresnelverluste in Kauf nehmende Einkopplung des Lichtes in den Lichtleiter, was den Wirkungsgrad positiv beeinflusst.The semiconductor light sources used for automotive lighting devices are often light-emitting diodes (LED) with a comparatively flat light exit surface, which can be arranged very close to the planar light input surface of the light guide. This allows a touching or at least almost touching arrangement of the semiconductor light sources on the coupling surface. This allows almost complete, only unavoidable Fresnel losses in purchasing coupling of the light in the light guide, which positively affects the efficiency.
Weitere Vorteile ergeben sich aus den abhängigen Ansprüchen, der Beschreibung und den beigefügten Figuren.Further advantages will be apparent from the dependent claims, the description and the attached figures.
Es versteht sich, dass die vorstehend genannten und die nachstehend noch zu erläuternden Merkmale nicht nur in der jeweils angegebenen Kombination, sondern auch in anderen Kombinationen oder in Alleinstellung verwendbar sind, ohne den Rahmen der vorliegenden Erfindung zu verlassen.It is understood that the features mentioned above and those yet to be explained below can be used not only in the particular combination given, but also in other combinations or in isolation, without departing from the scope of the present invention.
Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden in der nachfolgenden Beschreibung näher erläutert. Es zeigen, jeweils in schematischer Form:
- Fig. 1
- ein Ausführungsbeispiel einer erfindungsgemäßen Beleuchtungseinrichtung mit Streuelemente aufweisenden Abdeckscheibe;
- Fig. 2
- eine alternative Ausgestaltung mit einer glatten Abdeckscheibe;
- Fig. 3
- eine Draufsicht auf einen Lichtleiter mit plan-parallelen Lichteintritts- und Lichtaustrittsflächen;
- Fig. 4
- eine Draufsicht auf einen Lichtleiter mit einer gekrümmten Lichtaustrittsfläche;
- Fig. 5
- eine bevorzugte Ausgestaltung eines Lichtleiters einer Ausgestaltung der Beleuchtungsvorrichtung in einem Querschnitt;
- Fig. 6
- den technischen Effekt dieser Ausgestaltung in Form eines Lichtfächers;
- Fig. 7
- eine Ausgestaltung mit einem ringförmigen Parabolreflektor;
- Fig. 8
- eine Draufsicht auf eine Beleuchtungseinrichtung mit einer S-förmigen Zusammenstellung von drei Modulen der in der
dargestellten Art;Figur 1 - Fig. 9
- eine Draufsicht auf eine Beleuchtungseinrichtung, die dazu eingerichtet ist, ein Rechteck homogen zu beleuchten;
- Fig. 10
- eine perspektivische Darstellung eines entsprechend einer Rechteckprojektion beschnittenen Reflektors;
- Fig. 11
- eine Ausgestaltung, bei der die Lichtaustrittsfläche des Lichtleiters Streuelemente verschiedener Art aufweist; und
- Fig. 12
- einen Querschnitt durch einen Lichtleiter einer weiteren Ausgestaltung
- Fig. 13
- eine Möglichkeit der Anpassung des Platzbedarfs einer Ausgestaltungen einer erfindungsgemäßen Beleuchtungseinrichtungen an Bauraumerfordernisse; und
- Fig. 14
- eine weitere Möglichkeit einer solchen Anpassung.
- Fig. 1
- an embodiment of a lighting device according to the invention with scattering elements having cover plate;
- Fig. 2
- an alternative embodiment with a smooth cover;
- Fig. 3
- a plan view of a light guide with plane-parallel light entrance and light exit surfaces;
- Fig. 4
- a plan view of a light guide with a curved light exit surface;
- Fig. 5
- a preferred embodiment of a light guide of a configuration of the lighting device in a cross section;
- Fig. 6
- the technical effect of this embodiment in the form of a fan of light;
- Fig. 7
- an embodiment with an annular parabolic reflector;
- Fig. 8
- a plan view of a lighting device with an S-shaped combination of three modules in the
FIG. 1 represented type; - Fig. 9
- a plan view of a lighting device which is adapted to illuminate a rectangle homogeneous;
- Fig. 10
- a perspective view of a pruned according to a rectangular projection reflector;
- Fig. 11
- an embodiment in which the light exit surface of the light guide has scattering elements of different types; and
- Fig. 12
- a cross section through a light guide of another embodiment
- Fig. 13
- a possibility of adapting the space requirement of an embodiment of a lighting device according to the invention to installation space requirements; and
- Fig. 14
- another possibility of such an adjustment.
Gleiche Bezugszeichen verweisen dabei in den verschiedenen Figuren jeweils auf gleiche oder zumindest ihrer Funktion nach gleiche Elemente.Identical reference numbers refer in the various figures to identical or at least functionally identical elements.
Im Einzelnen zeigt die
Die Lichtaustrittsfläche 22 hat bevorzugt die Gestalt eines Teils eines Zylindermantels, der durch zwei parallel verlaufende Kreisbögen 22_1, 22_2 und durch zwei Geradenabschnitte 22_3, 22_4 begrenzt wird.The
Aus Gründen der Übersichtlichkeit sind von dem Licht 16 der Halbleiterlichtquelle 12 nur Strahlen dargestellt, die in der Ebene liegen, die in der
Durch eine Abdeckscheibe 32, die in Lichtausbreitungsrichtung über dem Reflektor 14 liegt und die zum Beispiel auf ihrer dem Reflektor 14 zugewandten Fläche Streuelemente 34 aufweist, die sich konvex aus der Abdeckscheibe herauswölben, wird in einer Ausgestaltung eine vorgeschriebene Lichtverteilung aus dem weitgehend parallelen Lichtbündel, das vom Reflektor 14 ausgeht, erzeugt. Die Streuelemente 34 sind in einer bevorzugten Ausgestaltung kugelförmig.By a
Der jeweilige Wert der Steigung ergibt sich dabei letztlich aus der geforderte Lichtverteilung. Ist zum Beispiel eine Lichtverteilung mit einem hellen Fleck in der Verlängerung der zentralen optischen Achse 26 aus der
Eine dritte Ausgestaltung sieht eine Kombination einer Streuelemente 34 aufweisenden Abdeckscheibe 32 mit einem Facetten 40, 42, 44 aufweisenden Reflektor 14 vor. Durch eine solche Kombination addieren sich die Ablenkwinkel von Facetten und Streuscheiben, so dass sich insgesamt eine stärkere Ablenkung und allgemein eine größere Freiheit bei der Gestaltung ergibt.A third embodiment provides a combination of a
Da die Lichteintrittsfläche 48 parallel zur Lichtaustrittsfläche 50 angeordnet ist, entspricht diese Konstellation dem Durchgang von Licht durch eine planparallele Platte. Das bedeutet, dass der Öffnungswinkel des Lichtbündels 52 im Lichtleiter 46 kleiner ist als außerhalb des Lichtleiters 46 und dass der Öffnungswinkel des Lichtbündels 52 nach dem Austritt aus dem Lichtleiter 46 gleich groß ist wie vor dem Eintritt in den Lichtleiter 46. In der Zeichenebene findet damit keine Lichtbündelung durch den Lichtleiter 46 statt.Since the
Die
Die
Insgesamt ist der Abstand zwischen der Oberseite 60 und der Unterseite 62 so gewählt, dass das von der Halbleiterlichtquelle 12 ausgehende und in den Lichtleiter 18 eingekoppelte Licht beim Auftreffen auf die Unterseite 62 und/oder die Oberseite 60 total reflektiert und damit letztlich zur Lichtaustrittsfläche 22 geleitet wird, die der Lichteintrittsfläche 20 gegenüberliegt. Durch die divergente Anordnung der Oberseite 60 und der Unterseite 62 des Lichtleiters 18 verringert sich der Winkel zwischen einem Lichtstrahl 64 und einer mittleren Propagationsrichtung 66 oder Mittellinie des Lichtleiters 18 mit jeder Totalreflexion. Das im Lichtleiter 18 propagierende Licht wird also mit zunehmender Annäherung an die Lichtaustrittsfläche im Sinne einer Annäherung an ein Bündel paralleler Strahlen gebündelt. Mit anderen Worten: Das dargestellte Verkippen der beiden Deckflächen relativ zueinander bewirkt, dass sich der Lichtstrahl 64 in Richtung eines sich aufweitenden Querschnitts bewegt. Bei jeder Totalreflexion an einer der beiden Deckflächen wird der Strahl um den doppelten Winkel, unter dem die beiden Flächen gegeneinander geneigt sind, parallelisiert.Overall, the distance between the
Die
Der kreisrunde Lichtleiter 79, dessen Geometrie und Anordnung relativ zum Reflektor 67 im Übrigen bevorzugt der Geometrie des Lichtleiters 18 aus der
Der kreisrunde Lichtleiter 79 mit den vier in einer zentralen Ausnehmung angeordneten Halbleiterlichtquellen 71, 73, 75, 77 wird beim Gegenstand der
Die in der
An Stelle einer viereckigen Ausnehmung, wie sie in der
Die Ausgestaltung, die in der
An Stelle von drei S-förmig aneinandergereihten Modulen können auch zwei, vier, fünf oder beliebig viele Module mit alternierender Krümmung aneinandergesetzt werden. Die Krümmung muss auch nicht von Modul zu Modul 90, 92, 94 ihr Vorzeichen wechseln, sondern es können auch ein oder mehrere Module mit einem ersten Krümmungsverhalten an ein oder mehrere Module mit einem zweiten Krümmungsverhalten anschließen.Instead of three S-shaped modules lined up, two, four, five or any number of modules with alternating curvature can be put together. The curvature does not have to change its sign from module to
Durch geeignetes Anordnen, Skalieren und Beschneiden von Reflektorabschnitten kann auch eine rechteckige Abschlussscheibe homogen durch eine Ausgestaltung einer erfindungsgemäßen Beleuchtungseinrichtung ausgeleuchtet werden.By suitably arranging, scaling and trimming reflector sections, a rectangular cover lens can also be illuminated homogeneously by a design of a lighting device according to the invention.
Die Aufteilung des Reflektors 117 erfolgt beim Gegenstand der
Die Winkelgrenzen zwischen den einzelnen Segmenten 118, 120, 122, 124, 126 werden durch Radialstrahlen markiert, die von der Lichtquelle 12 ausgehen, die in diesem Zusammenhang wieder als Punktlichtquelle betrachtet werden kann. Für jedes Segment 118, 120, 122, 124, 126 wird in der Draufsicht der
Die
Die
Alternativ dazu kann die zur Erzeugung der zweiten Lichtaustrittsfläche 22.10 dienende Geometrie, die in der Ausgestaltung der
Die
Claims (9)
- A lighting device (10) for a motor vehicle, having a semiconductor source (12) and a reflector (14), wherein the lighting device (10) has a fiber-optical light guide (18) receiving light (16) from the semiconductor source (12) and aiming it at the reflector (14), wherein the reflector (14) has a basic shape created by pivoting of a parabolic portion (24) about an imaginary axis (26), and the light guide has a plane light input face receiving light (16) from the semiconductor source (12) and a curved light output face (22), which is defined by a circular arc, characterized in that the center point of the circle belonging to the circular arc is defined by the semiconductor source (12) located just in front of the light input face of the light guide; and that the light guide (18) and the reflector (14) are located relative to one another in such a way, and the light output face (22) of the light guide (18) is curved in such a way, that a focal line (28) of the reflector (14), which line occurs upon pivoting as a result of the motion of the focal point (30) of the parabolic portion (24), is located in the light output face (22).
- The lighting device (10) of claim 1, characterized in that the light output face (22) has the form of a part of a cylinder jacket that is defined by two circular arcs (22_1, 22_2), which extend parallel, and two rectilinear portions (22_3, 22_4).
- The lighting device (10) of claim 1, characterized in that partial areas (18_1, 18_2) of the light guide (18), which are not used for conducting the light (16) of the light source (12) from its light input face (20) to its light output face (22), are used for fastening purposes, and the unused areas are determined by the opening angle of the light being propagated in the light guide (18).
- The lighting device (10) of one of the foregoing claims, characterized in that a covering disk (32), which in the light propagation direction is located above the reflector (14), has scattering elements (34) on its face oriented toward the reflector (14) that curve in convex fashion outward from the covering disk (32).
- The lighting device (10) of one of the foregoing claims, characterized in that a modulation, in the form of facets (40, 42, 44), which locally has a slope oscillating in alternation about the respective value of the slope of the parabolic portion (24), is superimposed on a parabolic portion (24) that determines the basic shape of the reflector (14).
- The lighting device (10) of one of the foregoing claims, characterized in that it has a covering disk (32) that has scattering elements (34) and has a reflector (14) that has facets (40, 42, 44).
- The lighting device (10) of one of the foregoing claims, characterized in that the light guide (18) has an increasing spacing between its top side (60) and its underside (62), beginning at its light input face (20) and extending toward the light output face (22).
- The lighting device (10) of one of the foregoing claims, characterized in that the reflector (67) has a reflection face which is generated by means of a pivoting, by 360° about an axis (69), of a parabolic portion (24) in space.
- The lighting device (10) of one of the foregoing claims, characterized in that the lighting device (10) has a circular fiber-optical light guide (79), which in the middle has a recess that is defined by faces on which semiconductor sources (71, 73, 75, 77) are fixed, and one of each of the semiconductor sources (71, 73, 75, 77) is located on each face.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
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DE102010048660A DE102010048660A1 (en) | 2010-10-15 | 2010-10-15 | Lighting device for a motor vehicle with a semiconductor light source and a reflector |
Publications (3)
Publication Number | Publication Date |
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EP2442013A2 EP2442013A2 (en) | 2012-04-18 |
EP2442013A3 EP2442013A3 (en) | 2014-05-07 |
EP2442013B1 true EP2442013B1 (en) | 2018-04-11 |
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EP11184485.8A Not-in-force EP2442013B1 (en) | 2010-10-15 | 2011-10-10 | Lighting device for a motor vehicle with a semiconductor light source and a reflector |
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DE (1) | DE102010048660A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102011004349A1 (en) * | 2011-02-17 | 2012-08-23 | Automotive Lighting Reutlingen Gmbh | Lighting device of a motor vehicle |
DE102012215124B4 (en) * | 2012-08-24 | 2018-11-08 | Automotive Lighting Reutlingen Gmbh | Lighting device with multiple light sources and light guide bodies and a reflector |
DE102013205303A1 (en) | 2013-03-26 | 2014-10-02 | Automotive Lighting Reutlingen Gmbh | Lighting device for a motor vehicle |
DE102013215471A1 (en) | 2013-08-06 | 2015-03-05 | Automotive Lighting Reutlingen Gmbh | Plate-shaped light guide element made of a transparent material and light module for a motor vehicle lighting device with such a light guide element |
DE102013110345A1 (en) * | 2013-09-19 | 2015-04-02 | Hella Kgaa Hueck & Co. | Lighting device for vehicles |
DE112014005269B4 (en) * | 2013-11-19 | 2020-03-12 | Mitsubishi Electric Corporation | Front light module and front light device |
CN106536279B (en) * | 2014-07-15 | 2020-04-28 | 亮锐控股有限公司 | Vehicle lighting module |
JP6479412B2 (en) | 2014-10-24 | 2019-03-06 | スタンレー電気株式会社 | Vehicle lighting |
DE102015202595A1 (en) | 2015-02-12 | 2016-08-18 | Automotive Lighting Reutlingen Gmbh | Lighting device of a vehicle |
DE102015205732A1 (en) | 2015-03-30 | 2016-10-06 | Automotive Lighting Reutlingen Gmbh | A plate-shaped light guide element, light guide element arrangement with a plurality of such light guide elements and motor vehicle light with such a light guide element or such a light guide element arrangement |
FR3079596B1 (en) * | 2018-03-30 | 2022-12-30 | Valeo Vision | OPTICAL DEVICE WITH OPTICAL GUIDE AND INDEXED REFLECTOR |
CN108758546A (en) * | 2018-08-09 | 2018-11-06 | 华域视觉科技(上海)有限公司 | Dipped beam lamp reflector, dipped beam car light and automobile |
DE102018125438A1 (en) * | 2018-10-15 | 2020-04-16 | HELLA GmbH & Co. KGaA | Lighting device for vehicles |
DE102019129369A1 (en) * | 2019-10-30 | 2021-05-06 | Marelli Automotive Lighting Reutlingen (Germany) GmbH | Light module, lighting device and motor vehicle |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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JP4027821B2 (en) * | 2003-03-11 | 2007-12-26 | 株式会社小糸製作所 | Vehicle lighting |
JP4049260B2 (en) * | 2003-03-11 | 2008-02-20 | 株式会社小糸製作所 | Vehicle lighting |
DE10311317A1 (en) * | 2003-03-14 | 2004-09-23 | Volkswagen Ag | Lighting device for vehicle, e.g. flashing light in external mirror, has several output coupling structures arranged on surface of light conductor to lie essentially at reflector surfaces focal point |
DE10336162B4 (en) * | 2003-08-07 | 2009-05-28 | Odelo Gmbh | Lighting unit with light source and light guide |
DE102005032650A1 (en) * | 2005-07-13 | 2007-02-01 | Hella Kgaa Hueck & Co. | Lamp for vehicles |
DE102008012195A1 (en) * | 2008-03-03 | 2009-09-10 | Hella Kgaa Hueck & Co. | Illumination device for motor vehicle, has flat light conducting element containing two flat sides and multiple narrow sides connected by flat sides, where light source is provided to narrow side of flat light conducting element |
FR2934353B1 (en) * | 2008-07-25 | 2011-03-11 | Valeo Vision Sas | OPTICAL SYSTEM WITH LARGE EMISSION SURFACE LIGHTING FUNCTION FOR MOTOR VEHICLE |
DE102008038668A1 (en) * | 2008-08-12 | 2010-02-18 | Hella Kgaa Hueck & Co. | Signal light for use in motor vehicle for production of e.g. rear light, has lateral surface segment forming light decoupling surface of rod-shaped light guiding element and arranged at longitudinal side of light guiding element |
-
2010
- 2010-10-15 DE DE102010048660A patent/DE102010048660A1/en not_active Withdrawn
-
2011
- 2011-10-10 EP EP11184485.8A patent/EP2442013B1/en not_active Not-in-force
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