EP2416061A2 - Cut-off lighting module with parabolic reflector placed over an elliptical reflector - Google Patents
Cut-off lighting module with parabolic reflector placed over an elliptical reflector Download PDFInfo
- Publication number
- EP2416061A2 EP2416061A2 EP11175169A EP11175169A EP2416061A2 EP 2416061 A2 EP2416061 A2 EP 2416061A2 EP 11175169 A EP11175169 A EP 11175169A EP 11175169 A EP11175169 A EP 11175169A EP 2416061 A2 EP2416061 A2 EP 2416061A2
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- European Patent Office
- Prior art keywords
- reflector
- focus
- reflecting surface
- lighting module
- module according
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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
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
- F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
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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]
- 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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
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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
- F21S41/36—Combinations of two or more separate reflectors
- F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
Definitions
- the invention relates to a lighting module especially for a motor vehicle.
- the lighting module is of the cut-off type with preferably one or more light sources of the electroluminescence diode type.
- the invention also relates to a lighting device comprising such a module.
- the lighting module produces a cut-off lighting beam, namely that the beam has a limit or directional cut, preferably in a generally horizontal direction, above which the light intensity becomes very low.
- This peculiarity of cut-off of the beam is found in particular in the lighting functions of low beam (or "code") as well as fog lights, in accordance with the legislation in force.
- the patent document FR 2 849 158 A discloses a cut-off lighting module for a motor vehicle as illustrated in FIG. figure 1 .
- Said module 2 comprises a light-emitting source 6 of the electroluminescence diode type, a first reflector 4 of the elliptical type with a first focus corresponding to the light source 6 and a second focus 12, a generally plane reflecting reflector 8 aligned with the optical axis 10 of the first reflector 4 passing through the first and second foci 6 and 12 and with a front edge passing approximately through the second focus 12, the reflective cover 8 being generally designated "folding" because of its function of folding images intended to be located at the level of the cut in the beam, and a second reflector 14 of the parabolic type whose focus corresponds to the second focus 12 of the first reflector.
- the second parabolic reflector 14 comprises a single focus so that the light rays passing through this focus and meeting the reflective surface of the reflector are reflected in a direction parallel to its optical axis 16.
- the parabolic reflector 14 is oriented so that its optical axis 16 forms an angle of approximately 90 ° with the optical axis 10 of the first elliptical reflector 4. This arrangement allows the majority of the rays emitted by the light source 6 and passing through the second focus 12 of the first reflector 4 to be reflected by the second parabolic reflector 14 in the lighting direction corresponding to its optical axis 16. Such a radius is shown in solid lines at the figure 1 .
- This arrangement also ensures a break thanks to the folder 8 which reflects the rays which, because of the not quite punctual surface of the light source, would pass before the second focus 12, that is to say between the second focus 12 and the first focus 6 , close to the second focus 12.
- Such rays, if they were not reflected by the folder 8 would be reflected by the parabolic reflector 14 in a direction deviating slightly upwards relative to its optical axis.
- the folder 8 thus ensures the cutting of the beam emitted by the module.
- a radius as described above is illustrated in dashed lines at the figure 1 .
- the folder 8 sends it to another part of the reflective surface of the second reflector 14 and is reflected in a direction deviating downwardly with respect to its optical axis.
- the object of the invention is to propose a lighting module that overcomes this problem. More particularly, the object of the invention is to propose a cut-off lighting module with a final projection reflector of the parabolic type having a reduced overall size, in particular along the vertical axis when the module is mounted in a vehicle.
- the invention consists of a lighting module especially for a motor vehicle, comprising a first reflector comprising a first reflective surface with at least a first focus for a light source and a second focus, said reflecting surface being able to reflect towards the second focus the light rays emitted by the light source and starting from the first focus; a cache with a cutoff edge near said second focus; a second reflector comprising a second reflecting surface with a focus corresponding approximately to the second focus of the first reflector, and an optical axis, said reflecting surface being able to reflect the light rays coming approximately from said second focus, in a direction parallel to the optical axis this second surface; remarkable in that the second reflector is oriented so that its reflective surface and the reflecting surface of the first reflector are oriented at least partially in the same direction with respect to the direction of emission of the rays which are reflected by the second reflector and which are parallel to the optical axis of the second reflector; and in that the module comprises a third reflector with a third reflective surface passing approximately
- the second reflector is oriented so that its optical axis forms an angle of less than 90 ° with the axis or the optical plane of the first reflector.
- the optical axis of the first reflector passes through the first and second foci of said reflector.
- the optical plane of the first reflector passes through the first foci and the second focus of said reflector.
- the angle formed by the optical axis of the second reflector with the axis or the optical plane of the first reflector is less than 45 °, preferably 30 °, more preferably still 10 °.
- the reflecting surface of the first reflector and the reflecting surface of the second reflector are located on the same side of the longitudinal axis of the lighting module.
- the reflecting surface of the first reflector and the reflecting surface of the second reflector are adjacent.
- the second reflector is supported by the first reflector.
- the reflecting surface of the first reflector is of generally elliptical cross-section, preferably in the form of a half-shell preferably delimited by a plane passing through the first focal point (s) and by the second focus of said surface.
- the reflecting surface of the second reflector comprises a paraboloid portion.
- This reflective surface may be formed of one or more paraboloid portions.
- the reflective surface of the third reflector is generally flat.
- the reflective surface of the third reflector is generally curved and concave with the concavity directed towards the second reflector.
- the cover comprises a reflecting surface.
- This reflective surface of the cover is preferably generally aligned with the optical axis of the first reflector, positioned vis-à-vis said first reflecting surface, and preferably disposed between the first and second focus of the first reflector.
- the reflective surface of the cache retrieves rays that instead of being absorbed by the cache are then returned to participate in the light beam emitted by the module.
- the reflective surface of the third reflector is close to the cutoff edge of the cover.
- the intersection between the cover and the reflective surface of the third reflector passes through the second focus of the first reflector.
- the cutoff edge of the cover corresponds to the junction of the reflective surface of the third reflector and the cover.
- the reflective surface of the third reflector forms, in a median plane comprising the optical axis of the first reflector or perpendicular to the optical plane of the first reflector, an angle of between 0 ° and 90 °, preferably between 20 ° and 70 °, more preferably still between 30 ° and 50 °, with the axis or the optical plane of the first reflector.
- the second reflector and the third reflector are sized so that the light rays emitted by the light source and reflected by the first reflector and meeting the cache in an area close to the third reflector are then reflected successively by the third and second reflectors.
- the module comprises an electroluminescence diode in the first focus of the first reflector.
- the electroluminescence diode is disposed on a flat face of a support.
- the plane face is preferably parallel to the overall direction of emission of the beam by the lighting module.
- This arrangement makes it possible to arrange the module with other modules, such as conventional elliptical lens modules or paraboloid reflector modules or with paraboloid sections, in which the electroluminescence diodes are parallel to the optical axis of the module. optical, usually horizontally.
- the substrates of each of the electroluminescence diodes will be parallel and may be arranged on the same plane, for example the same face of a printed circuit.
- the optical axis of the module corresponds to the illumination direction of the optical module.
- the first reflector, the second reflector and the third reflector are integral in one piece.
- At least two elements chosen from the first reflector, the second reflector, the third reflector and the cover are integral in one piece.
- the cover comprises a substrate on which a metal plate is placed so that the spokes meet the cover on the metal plate.
- This metal plate will absorb the rays when the cover is not reflective or reflect them when the cover is reflective.
- the substrate is integral with the first reflector, the second reflector and / or the third reflector.
- all of the reflectors and the substrate came from one-piece material.
- the metal plate is glued on the face of the substrate so as to absorb or reflect the rays passing behind the second focus.
- the advantage of the metal plate is that it will resist better the thermal effect due to the focusing of solar rays which, striking the second reflector, would find themselves focused at the second focus of the first reflector.
- the substrate may for example be a plate, for example a polymer.
- the invention also consists of a lighting device comprising a first module as defined above with at least a first light source, and at least a second module disposed next to the first module, the second module comprising a second light source ; the first and / or second light sources being an electroluminescence diode and are preferably arranged on a flat face of a common support parallel to the optical axis of the second optical module.
- the number of modules is not limiting: we can have two, three or more. They can perform each of the different lighting functions. According to other embodiments, they can be lit at the same time so that their respective beams, being associated, generate a global beam of illumination.
- the second module comprises a reflector integrally formed with at least one of the reflectors of the first module.
- the second module is a module as defined above.
- This device exploits the advantages of the module according to the invention, namely to allow to put the underside of the substrates of the electroluminescence diodes carrying the photoemissive elements in the same plane.
- This common support may be a printed circuit controlling the two electroluminescence diodes.
- the optical elements such as the reflectors, their respective foci and their optical axes have been illustrated in a simplified manner, and this for the sake of clarity of exposition.
- some of the reflectors are represented with a perfect match especially at the focal point (s) and other optically characteristic elements.
- These simplified illustrations do not necessarily correspond to reality. Indeed, in practice, the various optical elements may have imperfections, desired or not, which may require necessary adjustments of relative position, particularly at the level of the correspondence of the outbreak (s).
- the following description therefore illustrates the principle of the invention in combination with illustrations whose simplicity can in no way be considered as limiting.
- the illumination module 102 comprises a first reflector 104 of the elliptical type. It includes a reflective surface on its inner face. This reflecting surface is a surface of revolution of an elliptical segment about an axis 110 in a half-space delimited by a plane passing through said axis 110.
- the axis 110 is the optical axis of the reflector 104 in that that the reflector comprises a first focus 106 and a second focus 112 on said axis, these foci corresponding to those of the ellipse whose reflective surface is issued. All radius passing through the first focus 106 and meeting the reflective surface is reflected to the second focus 112.
- a light source 106 is arranged at the first focus so as to substantially illuminate the half-space occupied by the reflector 104.
- the light source is preferably of the electroluminescence diode type particularly suitable for providing illumination in a half-space from a quasi-point source. .
- the reflector 104 need not extend to the plane passing through the optical axis 110. Indeed, it may correspond to a surface of revolution on a sector of less than 180 °. It should also be noted that the reflective surface of the reflector 104 need not be perfectly a surface of revolution. In general, the reflector forms approximately a half-shell, the inner surface of which is generally of elliptical cross-section with a first focus and a second focus.
- the module 102 also comprises a cover 108, which, in this example, is in the form of a generally flat reflective surface disposed in the plane comprising the optical axis 110 and delimiting the first reflector 104.
- This reflecting surface is disposed near the second focus 112 of the first reflector 104, between the second focus and the first focus. It has a front edge 109, that is to say an edge directed in the direction of projection of the module 102, generally perpendicular to the optical axis 110 and passing through the second focus 112.
- the module 102 also comprises a second reflector 114 of the parabolic type with a focus coinciding with the second focus 112 of the first reflector.
- the reflector 114 comprises a concave reflective surface of parabolic section.
- the parable has many flat geometric definitions.
- the definition of a parable by focus and direction is an equidistance curve between a point (focus F) and a straight line (director D).
- the tangent at every point of a parabola is bisector of the angle formed by the straight line passing through the focus and this point, and the line passing through this point and perpendicular to the directrix.
- any luminous ray parallel to the axis of the parabola (that is to say, perpendicular to the directrix) is thus reflected by the parabola along a straight line passing through the focus. and vice versa.
- the rays passing through the focus 112 of the reflector 114 will therefore be reflected in a parallel direction at its optical axis.
- the optical axis of the second reflector 114 coincides with the optical axis 110 of the first reflector 104. It should be noted that the optical axis of the second reflector 114 may form an angle with the optical axis of the first reflector 104.
- the angle between the optical axes of the first and second reflectors is preferably less than 90 ° in order to be able to harvest most of the rays reflected by the third reflector 118.
- the reflecting surface of the second reflector 114 is oriented along its optical axis in the same direction as the reflecting surface of the first reflector 104.
- the second reflector 114 is preferably supported by the first reflector 104. It could however be supported independently. Its reflective surface bypasses the first reflector 104 or, at the very least, is such that it does not obstruct the light rays reflected by the reflecting surface of the first reflector and coming out of the latter.
- the module 102 includes a third reflector.
- the latter is generally plane and passes through the second focus 112 of the first reflector 104 and intersects with the front edge 109 of the cover 108.
- the third reflector 118 is inclined relative to the cover 108 so as to be able to send back to the light rays the second reflector 114.
- the angle of inclination of the third reflector 118 with respect to the cover 108 is a function of various parameters such as, for example, the distance between the first and second foci of the first reflector and the height or extent of the reflecting surface of the second reflector 114. It generally varies between 0 ° and 90 °, preferably between 20 ° and 70 °, more preferably between 30 ° and 60 °.
- the light rays emitted by the light source are thus reflected by the first reflector essentially towards the second focus 112. These rays are then reflected by the third reflector 118 towards the second reflector 114 in a direction parallel to the optical axis of said reflector.
- some will be reflected by the cache 108 and then by the third reflector 118 before meeting the second reflector. Others will meet the third reflector directly and will be reflected towards the second reflector.
- figure 4 is a simplified sectional view of the module of the figure 2 . It illustrates three rays emitted by the light source.
- a first ray 120 coming from the central point of the light source is reflected by the reflective surface of the first reflector 104 towards the second focus 112 and then reflected by the third reflector 118 and then by the second reflector 114 in a direction generally parallel to the optical axis of the module 110 corresponding to the lighting direction.
- a second ray 124 emitted by a front zone of the light source and meeting the reflective surface of the first reflector at the same point M as the first ray 120 is illustrated in FIG. figure 4 .
- a third ray 122 is emitted from a rear area of the light source and meeting the reflective surface of the first reflector at the same point M as the first and second spokes 120 and 124 are illustrated in FIG. figure 4 . Because of its angle of incidence greater than the reference radius 120, it will be reflected by the reflective surface of the first reflector 104 so as to pass in front of the second focus 112 and directly meet the reflective surface of the third reflector 118 to then be reflected to the second reflector 114. The ray 122 reflected by the third reflector will meet the reflecting surface of the second reflector 114 at a lower point than that of meeting the reference beam 120 with this surface.
- the ray 122 meeting the reflective surface of the second reflector 114 comes virtually from a point of the optical axis 110 located in front of the focus 112 and is therefore reflected in a direction inclined downward with respect to the illumination direction of the beam 120 and the optical axis 110 of the module.
- a large part of the rays emitted by the light source will be reflected by the reflecting surface of the first reflector 104 towards the second focus 112, like the reference radius 120 illustrated in FIG. figure 4 .
- These rays will meet the reflective surface of the first reflector 104 at different points and will therefore have different angles of incidence on the reflective surface of the third reflector 118, which will have the effect that they will meet the reflective surface of the second reflector 114 also at different points but will all be reflected, imperfections near the various elements of the module, according to a common direction parallel to the optical axis of the reflector.
- the upper portion of the beam of these rays reflected by the second reflector will constitute the upper limit or cutoff of the emitted beam.
- the rest of the rays emitted by the light source namely those which are reflected by the reflective surface of the first reflector so as to pass in front of or behind the second focus 112, like the spokes 122 and 124 shown in FIG. figure 4 , will be reflected by the second reflector 114 with an inclination angle directed downwardly relative to the illumination direction so as to enrich the illumination beam under the cut.
- the cutoff is therefore formed by the intersection of the reflective surfaces of the cover 108 and the third reflector 118.
- this intersection is a straight line.
- This intersection may have a projection approximately towards its center so as to ensure a differentiated cutoff between the left half and the right half of the lighting beam, in accordance with the legislation for the lighting function of the code type or dipped beam headlamps.
- the spokes passing behind the second focus 112 would be reflected by a lower part of the reflective surface of the third reflector (under the optical axis 110) so as to meet the second reflector 114 with an angle of incidence such that these rays would be reflected with a slightly upward inclination by compared to the reference lighting direction.
- the ray 124 after reflection by the first reflector 104 in the absence of the mask 108, would be reflected by the third reflector 118 to the second reflector from a point of the optical axis 110 located behind the focus 112 and would therefore be reflected by the second reflector in a direction inclined upward relative to the reference direction.
- the cover 108 therefore has the function of folding down the beam beams which, in the absence of this cover, would form an upper part of the beam.
- This cover 108 is thus commonly called a “folder” and the front edge of the reflective surface of this cover is commonly called “cutting edge”.
- the figure 3 illustrates a lighting module 1002 according to a second embodiment of the invention wherein the reflective surface of the third reflector is curved so as to form a concave or hollow surface.
- the operating principle described above in relation to the first embodiment also applies to this second embodiment.
- the curvature of the third reflector 118 makes it possible to concentrate the rays on a narrower zone of the second reflector 114.
- the module may include several light sources.
- the first reflector then comprises a more complex reflective surface with several first foci, the surface then being able to reflect the light rays of the different light sources arranged at the different first foci towards the second focus.
- the first reflector in this case comprises several optical axes converging towards the second focus.
- the light sources may for example, and not limited to, be arranged in a circular arc centered on the second focus and in a plane defining a half-space in which is the reflective surface of the first reflector.
- the figure 5 illustrates schematically and in perspective a lighting device providing a lighting function of the code type or still low beam. It comprises a first lighting module 102 according to the invention and to the figure 2 combined with a second illumination module 126 of the imaging type direct.
- the second module 126 comprises a single reflector 128 of the parabolic type with a first focus where is placed a light source. The rays emitted by this light source are reflected by the reflective surface of the reflector 128 to form the illumination beam.
- This device is called direct imaging since the light images 132 produced by the light source are transmitted directly by simple reflection to the light beam.
- the light source 130 is disposed approximately in the same plane 136 as the light source 106 of the first module 102. This arrangement makes it possible to predict the light sources of the two modules on the same support (not shown), which has a definite advantage as to the simplicity of assembly especially in view of the cooling constraints inherent to light sources of the electroluminescence diode type.
- the second module 126 has the advantage of having fewer light losses and thus to be able to ensure a significant portion of the photometry of the lighting beam.
- the cut is provided by a worked form of the reflective surface of the reflector 128.
- the first module 102 provides additional lighting with, however, a cut substantially sharper than that of the second module. This combination of modules produces a cut-off lighting device having a particularly interesting performance and size.
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Abstract
Description
L'invention a trait à un module d'éclairage notamment pour véhicule automobile. Le module d'éclairage est du type à coupure avec préférentiellement une ou plusieurs sources lumineuses du type diode à électroluminescence. L'invention a trait également à un dispositif d'éclairage comprenant un tel module.The invention relates to a lighting module especially for a motor vehicle. The lighting module is of the cut-off type with preferably one or more light sources of the electroluminescence diode type. The invention also relates to a lighting device comprising such a module.
Le module d'éclairage produit un faisceau d'éclairage à coupure, à savoir que le faisceau comporte une limite ou coupure directionnelle, préférentiellement selon une direction généralement horizontale, au-dessus de laquelle l'intensité lumineuse devient très faible. Cette particularité de coupure du faisceau se retrouve notamment dans les fonctions d'éclairage de feux de croisement (ou encore « code ») ainsi que de feux antibrouillards, conformément à la législation en vigueur.The lighting module produces a cut-off lighting beam, namely that the beam has a limit or directional cut, preferably in a generally horizontal direction, above which the light intensity becomes very low. This peculiarity of cut-off of the beam is found in particular in the lighting functions of low beam (or "code") as well as fog lights, in accordance with the legislation in force.
Le document de brevet
L'agencement de l'enseignement du document décrit ci-avant est intéressant à plus d'un titre mais comporte cependant un inconvénient, à savoir l'encombrement suivant l'axe z. En effet, la perpendicularité ou quasi-perpendicularité des axes optiques des réflecteurs elliptique et parabolique implique un encombrement selon l'axe z d'une valeur H telle qu'illustrée à la
L'invention a pour objectif de proposer un module d'éclairage palliant ce problème. Plus particulièrement, l'invention a pour objectif de proposer un module d'éclairage à coupure avec un réflecteur de projection finale du type parabolique présentant un encombrement réduit notamment selon l'axe vertical lorsque le module est monté dans un véhicule.The object of the invention is to propose a lighting module that overcomes this problem. More particularly, the object of the invention is to propose a cut-off lighting module with a final projection reflector of the parabolic type having a reduced overall size, in particular along the vertical axis when the module is mounted in a vehicle.
L'invention consiste en un module d'éclairage notamment pour véhicule automobile, comprenant un premier réflecteur comprenant une première surface réfléchissante avec au moins un premier foyer pour une source lumineuse et un second foyer, ladite surface réfléchissante étant apte à réfléchir vers le second foyer les rayons lumineux émis par la source lumineuse et partant du premier foyer; un cache avec un bord de coupure à proximité dudit second foyer; un deuxième réflecteur comprenant une deuxième surface réfléchissante avec un foyer correspondant approximativement au second foyer du premier réflecteur, et un axe optique, ladite surface réfléchissante étant apte à réfléchir les rayons lumineux provenant approximativement dudit second foyer, selon une direction parallèle à l'axe optique de cette deuxième surface ; remarquable en ce que le deuxième réflecteur est orienté de manière à ce que sa surface réfléchissante et la surface réfléchissante du premier réflecteur soient orientées au moins partiellement dans le même sens par rapport à la direction d'émission des rayons qui sont réfléchis par le deuxième réflecteur et qui sont parallèles à l'axe optique du deuxième réflecteur; et en ce que le module comprend un troisième réflecteur avec une troisième surface réfléchissante passant approximativement par le second foyer du premier réflecteur et orientée de manière à réfléchir vers la surface réfléchissante du deuxième réflecteur les rayons lumineux provenant de la source lumineuse et réfléchis par le premier réflecteur.The invention consists of a lighting module especially for a motor vehicle, comprising a first reflector comprising a first reflective surface with at least a first focus for a light source and a second focus, said reflecting surface being able to reflect towards the second focus the light rays emitted by the light source and starting from the first focus; a cache with a cutoff edge near said second focus; a second reflector comprising a second reflecting surface with a focus corresponding approximately to the second focus of the first reflector, and an optical axis, said reflecting surface being able to reflect the light rays coming approximately from said second focus, in a direction parallel to the optical axis this second surface; remarkable in that the second reflector is oriented so that its reflective surface and the reflecting surface of the first reflector are oriented at least partially in the same direction with respect to the direction of emission of the rays which are reflected by the second reflector and which are parallel to the optical axis of the second reflector; and in that the module comprises a third reflector with a third reflective surface passing approximately through the second focus of the first reflector and oriented to reflect towards the reflective surface of the second reflector the light rays from the light source and reflected by the first reflector reflector.
Ces mesures constituent un agencement avantageux du point de vue encombrement. De plus, elles permettent un montage du ou des sources lumineuses du module sur le même support que la ou les sources lumineuses d'un autre module notamment à imagerie directe qui serait disposé à côté dans un dispositif d'éclairage.These measurements constitute an advantageous arrangement from the point of view of space. In addition, they allow an assembly of the light source or the module on the same support as the light source or sources of another module including direct imaging that would be arranged next in a lighting device.
Selon un mode avantageux de l'invention, le deuxième réflecteur est orienté de sorte à ce que son axe optique forme un angle de moins de 90° avec l'axe ou le plan optique du premier réflecteur. L'axe optique du premier réflecteur passe par les premier et second foyers dudit réflecteur. Le plan optique du premier réflecteur passe par le ou les premiers foyers et par le second foyer dudit réflecteur.According to an advantageous embodiment of the invention, the second reflector is oriented so that its optical axis forms an angle of less than 90 ° with the axis or the optical plane of the first reflector. The optical axis of the first reflector passes through the first and second foci of said reflector. The optical plane of the first reflector passes through the first foci and the second focus of said reflector.
Selon un autre mode avantageux de l'invention, l'angle formé par l'axe optique du deuxième réflecteur avec l'axe ou le plan optique du premier réflecteur est inférieur à 45°, préférentiellement 30°, plus préférentiellement encore 10°.According to another advantageous embodiment of the invention, the angle formed by the optical axis of the second reflector with the axis or the optical plane of the first reflector is less than 45 °, preferably 30 °, more preferably still 10 °.
Selon un autre mode avantageux de l'invention, la surface réfléchissante du premier réflecteur et la surface réfléchissante du deuxième réflecteur sont situées su même côté de l'axe longitudinal du module d'éclairage.According to another advantageous embodiment of the invention, the reflecting surface of the first reflector and the reflecting surface of the second reflector are located on the same side of the longitudinal axis of the lighting module.
Selon un encore autre mode avantageux de l'invention, la surface réfléchissante du premier réflecteur et la surface réfléchissante du deuxième réflecteur sont adjacentes.According to yet another advantageous embodiment of the invention, the reflecting surface of the first reflector and the reflecting surface of the second reflector are adjacent.
Selon un encore autre mode avantageux de l'invention, le deuxième réflecteur est supporté par le premier réflecteur.According to yet another advantageous embodiment of the invention, the second reflector is supported by the first reflector.
Selon un encore autre mode avantageux de l'invention, la surface réfléchissante du premier réflecteur est de section généralement elliptique, préférentiellement en forme de demi-coque préférentiellement délimitée par un plan passant par le ou les premiers foyers et par le second foyer de ladite surface.According to another advantageous embodiment of the invention, the reflecting surface of the first reflector is of generally elliptical cross-section, preferably in the form of a half-shell preferably delimited by a plane passing through the first focal point (s) and by the second focus of said surface. .
Selon un encore autre mode avantageux de l'invention, la surface réfléchissante du deuxième réflecteur comprend une portion de paraboloïde. Cette surface réfléchissante peut être formée d'une seule ou de plusieurs portions de paraboloïde.According to yet another advantageous embodiment of the invention, the reflecting surface of the second reflector comprises a paraboloid portion. This reflective surface may be formed of one or more paraboloid portions.
Selon un encore autre mode avantageux de l'invention, la surface réfléchissante du troisième réflecteur est généralement plane.According to yet another advantageous embodiment of the invention, the reflective surface of the third reflector is generally flat.
Selon un encore autre mode avantageux de l'invention, la surface réfléchissante du troisième réflecteur est généralement courbe et concave avec la concavité dirigée vers le deuxième réflecteur.According to yet another advantageous embodiment of the invention, the reflective surface of the third reflector is generally curved and concave with the concavity directed towards the second reflector.
Selon un encore autre mode avantageux de l'invention, le cache comprend une surface réfléchissante. Cette surface réfléchissante du cache est de préférence généralement alignée avec l'axe optique du premier réflecteur, positionnée en vis-à-vis de ladite première surface réfléchissante, et de préférence disposée entre les premiers et second foyers du premier réflecteur. La surface réfléchissante du cache permet de récupérer des rayons qui au lieu d'être absorbés par le cache sont alors renvoyés pour participer au faisceau lumineux émis par le module.According to yet another advantageous embodiment of the invention, the cover comprises a reflecting surface. This reflective surface of the cover is preferably generally aligned with the optical axis of the first reflector, positioned vis-à-vis said first reflecting surface, and preferably disposed between the first and second focus of the first reflector. The reflective surface of the cache retrieves rays that instead of being absorbed by the cache are then returned to participate in the light beam emitted by the module.
Selon un encore autre mode avantageux de l'invention, la surface réfléchissante du troisième réflecteur est à proximité du bord de coupure du cache.According to yet another advantageous embodiment of the invention, the reflective surface of the third reflector is close to the cutoff edge of the cover.
Selon un encore autre mode avantageux de l'invention, l'intersection entre le cache et la surface réfléchissante du troisième réflecteur passe par le second foyer du premier réflecteur. Préférentiellement, le bord de coupure du cache correspond à la jonction de la surface réfléchissante du troisième réflecteur et du cache.According to yet another advantageous embodiment of the invention, the intersection between the cover and the reflective surface of the third reflector passes through the second focus of the first reflector. Preferably, the cutoff edge of the cover corresponds to the junction of the reflective surface of the third reflector and the cover.
Selon un encore autre mode avantageux de l'invention, la surface réfléchissante du troisième réflecteur forme, dans un plan médian comprenant l'axe optique du premier réflecteur ou perpendiculaire au plan optique du premier réflecteur, un angle compris entre 0° et 90°, préférentiellement entre 20° et 70°, plus préférentiellement encore entre 30° et 50°, avec l'axe ou le plan optique du premier réflecteur.According to another advantageous embodiment of the invention, the reflective surface of the third reflector forms, in a median plane comprising the optical axis of the first reflector or perpendicular to the optical plane of the first reflector, an angle of between 0 ° and 90 °, preferably between 20 ° and 70 °, more preferably still between 30 ° and 50 °, with the axis or the optical plane of the first reflector.
Selon un encore autre mode avantageux de l'invention, le deuxième réflecteur et le troisième réflecteur sont dimensionnés de manière à ce que les rayons lumineux émis par la source lumineuse et réfléchis par le premier réflecteur et rencontrant le cache dans une zone proche du troisième réflecteur soient réfléchis ensuite successivement par les troisième et deuxième réflecteurs.According to another advantageous embodiment of the invention, the second reflector and the third reflector are sized so that the light rays emitted by the light source and reflected by the first reflector and meeting the cache in an area close to the third reflector are then reflected successively by the third and second reflectors.
Selon un encore autre mode avantageux de l'invention, le module comprend une diode à électroluminescence au premier foyer du premier réflecteur. De préférence, la diode à électroluminescence est disposée sur une face plane d'un support. La face plane est de préférence parallèle à la direction globale d'émission du faisceau par le module d'éclairage. Cette disposition permet d'agencer le module avec d'autres modules, tel que des modules elliptiques à lentille classiques ou des modules à réflecteur paraboloïde ou avec des sections de paraboloïdes, dans lesquels les diodes à électroluminescence sont parallèles à l'axe optique du module optique, généralement horizontalement. Dans ce cas, les substrats de chacune des diodes à électroluminescence seront parallèles et pourrons être disposés sur un même plan, par exemple la même face d'un circuit imprimé.According to yet another advantageous embodiment of the invention, the module comprises an electroluminescence diode in the first focus of the first reflector. Preferably, the electroluminescence diode is disposed on a flat face of a support. The plane face is preferably parallel to the overall direction of emission of the beam by the lighting module. This arrangement makes it possible to arrange the module with other modules, such as conventional elliptical lens modules or paraboloid reflector modules or with paraboloid sections, in which the electroluminescence diodes are parallel to the optical axis of the module. optical, usually horizontally. In this case, the substrates of each of the electroluminescence diodes will be parallel and may be arranged on the same plane, for example the same face of a printed circuit.
Selon l'invention, l'axe optique du module correspond à la direction d'éclairage du module optique.According to the invention, the optical axis of the module corresponds to the illumination direction of the optical module.
Selon un encore autre mode avantageux de l'invention, le premier réflecteur, le deuxième réflecteur et le troisième réflecteur sont venus de matière en une seule pièce.According to yet another advantageous embodiment of the invention, the first reflector, the second reflector and the third reflector are integral in one piece.
Selon un encore autre mode avantageux de l'invention, au moins deux éléments choisis parmi le premier réflecteur, le deuxième réflecteur, le troisième réflecteur et le cache, sont venus de matière en une seule pièce.According to yet another advantageous embodiment of the invention, at least two elements chosen from the first reflector, the second reflector, the third reflector and the cover, are integral in one piece.
Selon un encore autre mode avantageux de l'invention, le cache comprend un substrat, sur lequel est posée une plaque métallique de manière à ce que les rayons rencontrent le cache sur la plaque métallique. Cette plaque métallique va absorber les rayons lorsque le cache n'est pas réfléchissant ou les réfléchir lorsque le cache est réfléchissant. Préférentiellement, le substrat est venu de matière avec le premier réflecteur, le deuxième réflecteur et/ou le troisième réflecteur. Par exemple, l'ensemble des réflecteurs et le substrat sont venus de matière en une seule pièce. La plaque métallique est collée sur la face du substrat de manière à absorber ou réfléchir les rayons passant en arrière du second foyer. L'avantage de la plaque métallique est qu'elle résistera mieux à l'effet thermique du à la focalisation de rayons solaires qui, frappant le deuxième réflecteur, se retrouveraient focalisés au niveau du second foyer du premier réflecteur. Le substrat peut par exemple être une plaque, par exemple en polymère.According to another advantageous embodiment of the invention, the cover comprises a substrate on which a metal plate is placed so that the spokes meet the cover on the metal plate. This metal plate will absorb the rays when the cover is not reflective or reflect them when the cover is reflective. Preferably, the substrate is integral with the first reflector, the second reflector and / or the third reflector. For example, all of the reflectors and the substrate came from one-piece material. The metal plate is glued on the face of the substrate so as to absorb or reflect the rays passing behind the second focus. The advantage of the metal plate is that it will resist better the thermal effect due to the focusing of solar rays which, striking the second reflector, would find themselves focused at the second focus of the first reflector. The substrate may for example be a plate, for example a polymer.
L'invention consiste également en un dispositif d'éclairage comprenant un premier module tel que défini ci-avant avec au moins une première source lumineuse, et au moins un deuxième module disposé à côté du premier module, le deuxième module comprenant une deuxième source lumineuse; les première et/ou deuxième sources lumineuses étant une diode à électroluminescence et sont disposées de préférence sur une face plane d'un support commun parallèle à l'axe optique du deuxième module optique.The invention also consists of a lighting device comprising a first module as defined above with at least a first light source, and at least a second module disposed next to the first module, the second module comprising a second light source ; the first and / or second light sources being an electroluminescence diode and are preferably arranged on a flat face of a common support parallel to the optical axis of the second optical module.
Le nombre de module n'est pas limitatif : on peut en avoir deux, trois ou plus. Ils peuvent réaliser chacun des fonctions d'éclairage différentes. Selon d'autres variantes de réalisation, ils peuvent être allumés en même temps pour que leurs faisceaux respectifs, en étant associés, génèrent un faisceau global d'éclairage.The number of modules is not limiting: we can have two, three or more. They can perform each of the different lighting functions. According to other embodiments, they can be lit at the same time so that their respective beams, being associated, generate a global beam of illumination.
Selon un mode avantageux de l'invention, le deuxième module comprend un réflecteur venu de matière avec au moins l'un des réflecteurs du premier module.According to an advantageous embodiment of the invention, the second module comprises a reflector integrally formed with at least one of the reflectors of the first module.
Selon un encore autre mode avantageux de l'invention, le deuxième module est un module tel que défini précédemment. Ce dispositif exploite les avantages du module selon l'invention, à savoir de permettre de mettre la face inférieure des substrats des diodes à électroluminescence portant les éléments photoémissifs dans un même plan. Ce support commun peut être un circuit imprimé pilotant les deux diodes à électroluminescence.According to another advantageous embodiment of the invention, the second module is a module as defined above. This device exploits the advantages of the module according to the invention, namely to allow to put the underside of the substrates of the electroluminescence diodes carrying the photoemissive elements in the same plane. This common support may be a printed circuit controlling the two electroluminescence diodes.
L'invention et ses différentes formes de réalisations seront mieux comprises à l'aide des figures et de la description qui va suivre. Parmi les figures, on distingue :
- La
figure 1 illustrant de manière schématique et en coupe un module d'éclairage à coupure connu de l'état de la technique et discuté dans la partie introductive ; - La
figure 2 illustrant de manière schématique et en perspective un premier mode de réalisation d'un module d'éclairage selon l'invention ; - La
figure 3 illustrant de manière schématique et en perspective un seconde mode de réalisation d'un module d'éclairage selon l'invention ; - La
figure 4 illustrant le principe de fonctionnement optique du module d'éclairage selon l'invention ; - La
figure 5 illustrant de manière schématique et en perspective un module d'éclairage selon l'invention combiné avec un module d'éclairage à imagerie directe, cette combinaison étant conforme également à l'invention.
- The
figure 1 illustrating schematically and in section a cut-off lighting module known from the state of the art and discussed in the introductory part; - The
figure 2 illustrating schematically and in perspective a first embodiment of a lighting module according to the invention; - The
figure 3 illustrating schematically and in perspective a second embodiment of a lighting module according to the invention; - The
figure 4 illustrating the principle of optical operation of the lighting module according to the invention; - The
figure 5 illustrating schematically and in perspective a lighting module according to the invention combined with a direct imaging lighting module, this combination being also in accordance with the invention.
Il est à noter que dans les représentations des différentes figures, les éléments optiques tels que les réflecteurs, leurs foyers respectifs et leurs axes optiques ont été illustrés de manière simplifiée, et ce à des fins de clarté d'exposé. De plus, certains des réflecteurs sont représentés avec une correspondance parfaite notamment au niveau du ou des foyers et autres éléments optiquement caractéristiques. Ces illustrations simplifiées ne correspondent pas nécessairement à la réalité. En effet, en pratique, les différents éléments optiques peuvent présenter des imperfections, voulues ou non, qui peuvent requérir de nécessaires ajustements de position relative, notamment au niveau de la correspondance du ou des foyers. L'exposé qui va suivre illustre par conséquent le principe de l'invention en combinaison avec des illustrations dont la simplicité de ne peut en aucun cas être considérée comme limitative.It should be noted that in the representations of the various figures, the optical elements such as the reflectors, their respective foci and their optical axes have been illustrated in a simplified manner, and this for the sake of clarity of exposition. In addition, some of the reflectors are represented with a perfect match especially at the focal point (s) and other optically characteristic elements. These simplified illustrations do not necessarily correspond to reality. Indeed, in practice, the various optical elements may have imperfections, desired or not, which may require necessary adjustments of relative position, particularly at the level of the correspondence of the outbreak (s). The following description therefore illustrates the principle of the invention in combination with illustrations whose simplicity can in no way be considered as limiting.
Le module d'éclairage connu de la
Dans l'exemple de la
Une source lumineuse 106 est disposée au premier foyer de manière à éclairer essentiellement le demi-espace occupé par le réflecteur 104. La source lumineuse est préférentiellement du type diode à électroluminescence particulièrement adaptée à assurer un éclairage dans un demi-espace depuis une source quasi ponctuelle.A
Il est à noter que le réflecteur 104 ne doit pas nécessairement s'étendre jusqu'au plan passant par l'axe optique 110. En effet, il peut correspondre à une surface de révolution sur un secteur de moins de 180°. Il est également à noter que la surface réfléchissante du réflecteur 104 ne doit pas nécessairement être parfaitement une surface de révolution. De manière générale, le réflecteur forme approximativement une demi-coquille dont la surface intérieure est généralement de section elliptique avec un premier foyer et un second foyer.It should be noted that the
Le module 102 comprend également un cache 108, qui, dans cet exemple, est sous forme de surface réfléchissante généralement plane disposée dans le plan comprenant l'axe optique 110 et délimitant le premier réflecteur 104. Cette surface réfléchissante est disposée à proximité du second foyer 112 du premier réflecteur 104, entre le second foyer et le premier foyer. Elle présente un bord avant 109, c'est-à-dire un bord dirigé selon la direction de projection du module 102, généralement perpendiculaire à l'axe optique 110 et passant par le second foyer 112.The
Le module 102 comprend également un deuxième réflecteur 114 du type parabolique avec un foyer confondu avec le second foyer 112 du premier réflecteur. Le réflecteur 114 comprend une surface réfléchissante concave de section parabolique. La parabole possède de nombreuses définitions géométriques planes. La définition d'une parabole par foyer et directrice est une courbe d'équidistance entre un point (le foyer F) et une droite (la directrice D). La tangente en tout point d'une parabole est bissectrice de l'angle formé par la droite passant par le foyer et ce point et la droite passant par ce point et perpendiculaire à la directrice. Il en découle que, selon les lois de la réflexion, tout rayon lumineux parallèle à l'axe de la parabole (c'est-à-dire perpendiculaire à la directrice), est donc réfléchi par la parabole suivant une droite passant par le foyer et inversement. Les rayons passant par le foyer 112 du réflecteur 114 seront donc réfléchis selon une direction parallèle à son axe optique. Dans le cas de la
La surface réfléchissante du deuxième réflecteur 114 est orientée selon son axe optique dans le même sens que la surface réfléchissante du premier réflecteur 104.The reflecting surface of the
Le deuxième réflecteur 114 est préférentiellement supporté par le premier réflecteur 104. Il pourrait cependant être soutenu de manière indépendante. Sa surface réfléchissante contourne le premier réflecteur 104 ou, à tout le moins, est telle qu'elle ne fait pas obstruction aux rayons lumineux réfléchis par la surface réfléchissante du premier réflecteur et sortant de ce dernier.The
Le module 102 comprend en effet un troisième réflecteur. Ce dernier est généralement plan et passe par le second foyer 112 du premier réflecteur 104 et vient en intersection avec le bord avant 109 du cache 108. Le troisième réflecteur 118 est incliné par rapport au cache 108 de manière à pouvoir renvoyer vers les rayons lumineux le deuxième réflecteur 114. L'angle d'inclinaison du troisième réflecteur 118 par rapport au cache 108 est fonction de différents paramètres comme par exemple la distance entre les premier et second foyers du premier réflecteur et la hauteur ou étendue de la surface réfléchissante du deuxième réflecteur 114. Il varie généralement entre 0° et 90°, préférentiellement entre 20° et 70°, plus préférentiellement entre 30° et 60°.The
Les rayons lumineux émis par la source lumineuse sont ainsi réfléchis par le premier réflecteur essentiellement vers le second foyer 112. Ces rayons sont ensuite réfléchis par le troisième réflecteur 118 vers le deuxième réflecteur 114 selon une direction parallèle à l'axe optique dudit réflecteur. Parmi les rayons émis par la source lumineuse et réfléchis par le premier réflecteur qui ne passent pas par le second foyer 112 en raison notamment de diverses imperfections du réflecteur et de la non ponctualité de la source lumineuse, certains vont être réfléchis par le cache 108 et ensuite par le troisième réflecteur 118 avant de rencontrer le deuxième réflecteur. D'autres vont rencontrer directement le troisième réflecteur et seront réfléchis vers le deuxième réflecteur.The light rays emitted by the light source are thus reflected by the first reflector essentially towards the
Ces différents types de réflexion sont illustrés à la
Une grande partie des rayons émis par la source lumineuse va être réfléchie par la surface réfléchissante du premier réflecteur 104 vers le second foyer 112, à l'instar du rayon de référence 120 illustré à la
La coupure est par conséquent formée par l'intersection des surfaces réfléchissantes du cache 108 et du troisième réflecteur 118. Dans le cas de la
En l'absence du cache 108, les rayons passant derrière le second foyer 112, à l'instar du rayon 124 illustré à la
La
Il est à noter que de manière générale, le module peut comprendre plusieurs sources lumineuses. Le premier réflecteur comprend alors une surface réfléchissante plus complexe avec plusieurs premiers foyers, la surface étant alors apte à réfléchir les rayons lumineux des différentes sources lumineuses disposées aux différents premiers foyers vers le second foyer. Le premier réflecteur comprend dans ce cas plusieurs axes optiques convergeant vers le second foyer. Par exemple, aussi bien pour le premier mode de réalisation de l'invention selon les
La
Le second module 126 présente l'avantage d'avoir moins de pertes lumineuses et donc de pouvoir assurer une partie importante de la photométrie du faisceau d'éclairage. La coupure est assurée par une forme travaillée de la surface réfléchissante du réflecteur 128. Le premier module 102 assure un complément d'éclairage avec toutefois une coupure sensiblement plus nette que celle du second module. Cette combinaison de module produit un dispositif d'éclairage à coupure présentant un rendement et un encombrement particulièrement intéressants.The
Claims (15)
caractérisé en ce que
le deuxième réflecteur (114) est orienté de manière à ce que sa surface réfléchissante et la surface réfléchissante du premier réflecteur (104) soient orientées au moins partiellement dans le même sens par rapport à la direction d'émission des rayons qui sont réfléchis par le deuxième réflecteur (114) et qui sont parallèles à l'axe optique du deuxième réflecteur ; et en ce que le module comprend un troisième réflecteur (118) avec une troisième surface réfléchissante passant approximativement par le second foyer (112) du premier réflecteur (104) et orientée de manière à réfléchir vers le deuxième réflecteur (114) les rayons lumineux émis par la source lumineuse (106) et réfléchis par le premier réflecteur.
characterized in that
the second reflector (114) is oriented so that its reflective surface and the reflecting surface of the first reflector (104) are at least partially oriented in the same direction with respect to the direction of emission of the rays which are reflected by the second reflector (114) and which are parallel to the optical axis of the second reflector; and in that the module comprises a third reflector (118) with a third reflecting surface passing approximately through the second focus (112) of the first reflector (104) and oriented to reflect to the second reflector (114) the light rays emitted by the light source (106) and reflected by the first reflector.
les première et deuxième sources lumineuses (106, 130) étant du type diode à électroluminescence et disposées sur une face plane d'un support commun (136) parallèle à l'axe optique du deuxième module optique.
the first and second light sources (106, 130) being of the electroluminescence diode type and disposed on a planar face of a common carrier (136) parallel to the optical axis of the second optical module.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1056433A FR2966221B1 (en) | 2010-08-04 | 2010-08-04 | CUTTING LIGHTING MODULE WITH PARABOLIC REFLECTOR ARRANGED ON AN ELLIPTICAL REFLECTOR |
Publications (2)
Publication Number | Publication Date |
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EP2416061A2 true EP2416061A2 (en) | 2012-02-08 |
EP2416061A3 EP2416061A3 (en) | 2012-08-08 |
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ID=43706774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP11175169A Withdrawn EP2416061A3 (en) | 2010-08-04 | 2011-07-25 | Cut-off lighting module with parabolic reflector placed over an elliptical reflector |
Country Status (2)
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EP (1) | EP2416061A3 (en) |
FR (1) | FR2966221B1 (en) |
Cited By (4)
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CN108240603A (en) * | 2016-12-23 | 2018-07-03 | 汽车照明罗伊特林根有限公司 | LED module and the lighting device with multiple this LED modules for motor vehicle |
CN109519865A (en) * | 2019-01-03 | 2019-03-26 | 华域视觉科技(上海)有限公司 | Increase method, the assistant reflection device, LED module unit, car light, automobile of light type width |
WO2022130595A1 (en) * | 2020-12-17 | 2022-06-23 | 本田技研工業株式会社 | Vehicle lamp |
EP4206524A4 (en) * | 2021-09-18 | 2024-01-03 | Hasco Vision Technology Co., Ltd. | Optical reflection system for vehicle lamp lighting device, and vehicle lamp lighting device |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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FR3001027B1 (en) | 2013-01-15 | 2015-03-20 | Valeo Vision | LIGHTING MODULE AND METHOD FOR MOUNTING SUCH A MODULE |
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FR2849158A1 (en) | 2002-12-20 | 2004-06-25 | Valeo Vision | Headlight module for vehicle, has reflector positioned between another two reflectors, where reflector has cutting edge fixed near focus of one of another two reflectors to cut light rays |
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FR2678353A1 (en) * | 1991-06-28 | 1992-12-31 | Valeo Vision | Headlamp with high luminous intensity and very sharp cut-off |
FR2899668B1 (en) * | 2006-04-06 | 2009-11-20 | Valeo Vision | LIGHTING MODULE FOR A LIGHT PROJECTOR OF A MOTOR VEHICLE, AND PROJECTOR COMPRISING SUCH A MODULE. |
FR2917811B1 (en) * | 2007-06-25 | 2009-10-02 | Valeo Vision Sa | LIGHTING MODULE FOR MOTOR VEHICLE PROJECTOR |
-
2010
- 2010-08-04 FR FR1056433A patent/FR2966221B1/en active Active
-
2011
- 2011-07-25 EP EP11175169A patent/EP2416061A3/en not_active Withdrawn
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
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FR2849158A1 (en) | 2002-12-20 | 2004-06-25 | Valeo Vision | Headlight module for vehicle, has reflector positioned between another two reflectors, where reflector has cutting edge fixed near focus of one of another two reflectors to cut light rays |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108240603A (en) * | 2016-12-23 | 2018-07-03 | 汽车照明罗伊特林根有限公司 | LED module and the lighting device with multiple this LED modules for motor vehicle |
CN108240603B (en) * | 2016-12-23 | 2022-12-13 | 汽车照明罗伊特林根有限公司 | LED module and lighting device for a motor vehicle having a plurality of such LED modules |
CN109519865A (en) * | 2019-01-03 | 2019-03-26 | 华域视觉科技(上海)有限公司 | Increase method, the assistant reflection device, LED module unit, car light, automobile of light type width |
CN109519865B (en) * | 2019-01-03 | 2024-01-26 | 华域视觉科技(上海)有限公司 | Method and device for increasing light type width, module unit, car lamp and car |
WO2022130595A1 (en) * | 2020-12-17 | 2022-06-23 | 本田技研工業株式会社 | Vehicle lamp |
JP7528264B2 (en) | 2020-12-17 | 2024-08-05 | 本田技研工業株式会社 | Vehicle lighting fixtures |
EP4206524A4 (en) * | 2021-09-18 | 2024-01-03 | Hasco Vision Technology Co., Ltd. | Optical reflection system for vehicle lamp lighting device, and vehicle lamp lighting device |
Also Published As
Publication number | Publication date |
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FR2966221A1 (en) | 2012-04-20 |
EP2416061A3 (en) | 2012-08-08 |
FR2966221B1 (en) | 2015-09-18 |
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