EP2410238A1 - Optischer Reflektor auf transparenter Scheibe mit Hinterschnitt - Google Patents

Optischer Reflektor auf transparenter Scheibe mit Hinterschnitt Download PDF

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Publication number
EP2410238A1
EP2410238A1 EP11174428A EP11174428A EP2410238A1 EP 2410238 A1 EP2410238 A1 EP 2410238A1 EP 11174428 A EP11174428 A EP 11174428A EP 11174428 A EP11174428 A EP 11174428A EP 2410238 A1 EP2410238 A1 EP 2410238A1
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EP
European Patent Office
Prior art keywords
reflector
blade
focus
optical axis
lighting module
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.)
Granted
Application number
EP11174428A
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English (en)
French (fr)
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EP2410238B1 (de
Inventor
Pierre Albou
Julien Muller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SAS
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Valeo Vision SAS
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Filing date
Publication date
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Publication of EP2410238A1 publication Critical patent/EP2410238A1/de
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Publication of EP2410238B1 publication Critical patent/EP2410238B1/de
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Classifications

    • 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
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • 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
    • 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
    • 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
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • 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

Definitions

  • the invention relates to a lighting module for a vehicle headlamp, more particularly to a lighting module comprising a reflector with a first and second focus, such as an elliptical reflector, a blade of transparent material with a slice disposed at near the second focus and intended to serve as a folder, and a dioptric element, for example a convergent lens.
  • a reflector with a first and second focus such as an elliptical reflector
  • a blade of transparent material with a slice disposed at near the second focus and intended to serve as a folder
  • a dioptric element for example a convergent lens.
  • the slice or upper surface of the transparent blade is generally flat and aligned with the optical axis and covered with a reflective coating.
  • the leading edge of the wafer i.e., the edge of the wafer on the side of the lens is in the vicinity of the second focus.
  • the reflective coating on the upper edge of the transparent plate consists for example of a deposit of vacuum deposited aluminum with a thickness ranging from less than a micron to a few tens of microns.
  • the reflective coating constitutes a "folder” able to "fold” by reflection the rays coming from the upper reflector to ensure a cutoff of the "code” type beam thus generated.
  • the rays from the lower reflector are added to those of the upper reflector to provide the "road" function.
  • the bender thus formed has the advantage of being extremely thin which is particularly interesting in "road” function to minimize the areas of low intensity between the beam from the upper reflector and the beam from the lower reflector. Such fineness of bending is difficult to achieve by means of a reflective plate, at least in an industrial logic and at a reasonable price.
  • the blade serving as a support for the reflective coating has the disadvantage of having a refractive index greater than 1 and hence of refracting the rays coming from the lower reflector.
  • the use of a transparent support blade therefore generates a slight deviation of the rays and hence a loss of efficiency and lighting quality.
  • the rays coming from the reflector and entering the blade with a large angle of incidence and then reflected by the reflective coating emerge from the blade at a distance from the reflective edge of the blade and with an always important angle of incidence. .
  • These rays will meet the lens with a significant angle of incidence and therefore suffer losses called Fresnel, also called partial glassy reflections.
  • the object of the invention is to propose a lighting module that is more efficient than the modules mentioned above.
  • the object of the invention relates to a lighting module for a motor vehicle headlamp, comprising: a first reflector with a reflective surface, with at least a first focus for a light source and a second focus; a dioptric element with an optical axis, arranged to receive the light rays from said light source and to transmit the light rays reaching it in a light beam; a blade of transparent material disposed between said reflector and said dioptric element so as to present a wafer, forming a folder capable of reflecting a part of the rays reflected by the reflective surface of the first reflector towards a portion of the dioptric element; the first reflector, the dioptric element, the edge of the blade being arranged to form a beam.
  • said generally flat slice is inclined toward said reflector with respect to the optical axis of the dioptric element.
  • the dioptric element may be a convergent lens.
  • the reflecting surface of the first reflector is such that said reflecting surface is able to reflect the light rays emitted by the light source from said first focus, the reflected rays propagating toward said second focus, either before they reach said blade, or after refraction in said blade.
  • the direction of the rays reflected towards the second focus after refraction the reflecting surface of the first reflector is corrected according to the blade so that rays emitted by the light source of the first reflector pass approximately through the second focus. after reflection on said corrected reflecting surface and refraction when passing through said blade.
  • the reflective surface is corrected with respect to a reflective surface where the reflected rays are directed to the second focus before refraction.
  • the wafer may comprise a flat portion or be completely planar.
  • the presence of a reflective coating on the wafer is not essential. Indeed, it is possible to perform the folding function without the presence of reflective coating, this function being based on the principle of total reflection at the diopter formed by the change of refractive index between the transparent material of the blade and the ambient air at the level of the slice.
  • the edge of the edge of the blade on the side of the dioptric element is approximately at said second focus.
  • the optical axis of the dioptric element passes through the second focus.
  • the dioptric element is convergent and has a focus disposed about on the second focus.
  • the edge of the blade forms an angle ⁇ with the optical axis of the dioptric element between 1 ° and 7 °, preferably between 2 ° and 5 °, more preferably still between 3 ° and 5 °. ° and 5 °.
  • the blade is located exclusively on the optical axis side of the dioptric element where the reflector is located. This allows for example to use a second reflector above the first reflector.
  • the edge of the blade is provided with a reflective coating.
  • the blade has two main faces parallel and perpendicular to the optical axis of the dioptric element.
  • the blade has a face opposite to the edge serving as a folder, said opposite face being inclined with respect to a perpendicular to the main faces, the inclination of said opposite face being oriented so as to reduce the surface of the main face facing the reflector.
  • This provides a draft angle to be able to demold the blade more easily during its design. This is particularly the case when the blade is made of glass, because it is difficult or impossible to use a movement in the molding tool.
  • the face of the blade opposite to the edge serving as a folder forms an angle with a perpendicular to the main faces between 1 ° and 7 °, preferably between 2 ° and 5 °, more preferably still between 3 ° and 5 °.
  • the optical axis of the first reflector forms an angle with the optical axis of the dioptric element, preferably an angle of more than 10 °, more preferably an angle of more than 20 °. , more preferably still an angle of more than 30 °.
  • the proposed measurements are particularly interesting when the reflector is inclined with respect to the optical axis of the module. Indeed, in this arrangement, the rays enter the blade with a greater angle of incidence, so that the compensation made by the proposed measures can limit the dispersion of rays.
  • the first reflector is arranged so that its reflecting surface moves away from the optical axis of the dioptric element when said reflective surface approaches its first focus.
  • the first focus of the reflecting surface is located below the optical axis of the dioptric element.
  • this arrangement implies a substantial angle between the optical axis of the reflector and the optical axis of the module. It follows that the rays coming from the reflector enter the blade with a large angle of incidence, the compensation made by the proposed measures thus making it possible to limit the dispersion of the rays.
  • the module comprises a second reflector with a reflective surface, with at least a first focus for a light source, a second focus and an optical axis passing through said first and second focus, said surface reflector being adapted to reflect the light rays emitted by said light source from said first focus to said second focus, said second focus being approximately coincident with the second focus of the first reflector, the optical axis of the first reflector forming an angle with the axis optical element of the dioptric element, the first and second reflectors being oriented relative to their respective optical axes so that the reflective surface of the second reflector is vis-à-vis the outer surface of the first reflector, this outer surface being the opposite surface to the reflective surface of the first reflector.
  • the reflective face of the second reflector is facing the back of the second reflector.
  • a wall disposed adjacent to the edge of the transparent blade, in a plane passing approximately through said wafer, said wall having a reflecting face oriented towards the first reflector and serving as a folder for rays reflected by the reflective surface of the first reflector.
  • the plane containing this wall is parallel to the optical axis of the dioptric element and passes through the rear edge of the reflective wafer of the blade.
  • the light source or sources are electroluminescent diodes.
  • optical elements are illustrated in the figures in a simplified manner with perfect matching of the focal points and optical axes for the sake of clarity of presentation. Such matches are not to be interpreted strictly, since in practice there may be slight deviations due to the imperfect nature of certain elements, mounting tolerance and / or to correct some effects related to imperfection of certain optical elements. The same applies to the light sources which are represented in a specific way, whereas it is clear that in practice these light sources are not perfectly punctual and have a light emission surface that has been chosen here. voluntarily not to represent.
  • FIG 1 is schematically illustrated in perspective a lighting module according to the invention. It comprises a convergent lens 4 with a focus 24 and an optical axis 2 passing through the focus.
  • a transparent plate 6 is disposed generally perpendicularly to the optical axis 2, or generally vertically in the half-space delimited by a horizontal median plane passing through the optical axis 2.
  • the blade has an upper edge 26 comprising the optical axis 2 and passing at least approximately through the plane in question.
  • the top edge 26 is covered with a reflective coating. This coating is applied exclusively to the wafer 26, leaving the other faces of the blade transparent.
  • the blade is arranged so that the front edge is at the focus 24.
  • the wafer 26 has a projection at its median corresponding to the optical axis 2. The function of the jump will be explained further later.
  • the blade is made of transparent material such as glass or any other transparent material, for example PMMA (polymethyl methacrylate).
  • edge 26 of the blade can perform the folding function without the presence of a reflective coating, and this by the use of the principle of total reflection on a diopter formed by the interface between two media index of different refraction. In this case, it will be necessary to ensure that the rays meet the diopter formed by the wafer with an angle of incidence greater than the limit angle of total reflection.
  • the module also comprises a first reflector 10 in the lower half-space. It is represented schematically by its reflective surface. This surface has in this example an approximate ellipsoid profile, for example symmetrical in rotation about its optical axis 20. It comprises a first focus 22 for receiving a light source and a second focus coinciding with the focus 24 of the lens 4
  • the optical axis 20 of the first reflector forms an angle with the optical axis 2 which is between 30 ° and 60 °, preferably between 40 ° and 50 °.
  • the light source mainly illuminates in a half-space delimited by the transverse plane comprising the optical axis 20 of the reflector and is preferably of the electroluminescent diode type.
  • the module also comprises a second reflector 8 represented by its reflecting surface. It is composed of two reflecting sub-surfaces of symmetrical elliptical profile in revolution with respect to the respective optical axes 12 and 14. Each reflective sub-surface includes a first focus 16 or 18 for receiving a light source and a second focus coinciding with focus 24 of the lens and the second focus of the first reflector.
  • the reflecting surface of the second reflector 8 consists of the juxtaposition of the two sub-surfaces in a half-space delimited by a plane passing through the respective optical axes 12 and 14 and the optical axis 2 of the lens 4, so as to form a cavity doubly concave adapted to reflect the light rays from the first foci 16 and 18 to the second focus 24.
  • the two respective optical axes 12 and 14 form an acute angle between them and each form an equal angle with the optical axis 2 of the lens and module.
  • the lighting module also comprises a reflective plate 9 on its two faces and disposed approximately in the plane passing through the optical axes 12 and 14 of the second reflector and the reflecting edge 26 of the blade 6. It is disposed adjacent or almost -Adjacent to the rear edge of the wafer and extends to a distance from this rear edge.
  • the rear edge of the plate 9 reaches approximately the height of the intersection of the reflecting surface of the first reflector 10 with said plane. More specifically, the profile of the rear edge of the reflective plate 9 is V-shaped whose tip is aligned with the optical axis and symmetry 2 of the module and directed rearwardly, so that the reflecting surface of the plate covers a major part of the area defined by the intersection of the reflective surface of the first reflector with the plane.
  • the reflective plate 9 plays the role of complementary folder and will be explained later.
  • optical axes 12 and 14 of the reflective sub-surfaces of the second reflector 8 need not be included in the horizontal median plane. Indeed, they can form a certain angle with this plane.
  • FIG. 2 A sectional view and optical principle of the device of the figure 1 is illustrated in the figure 2 .
  • it has been chosen to assimilate the second reflector to a single reflective surface with a single first focus and a single light source. This simplification does not alter the operating principle of the second reflector comprising two reflecting sub-surfaces and two light sources.
  • the second reflector 8 generates with its light source or sources 16 and 18 a cut-off beam ensuring for example a lighting function of the "code" type. Indeed, the majority of the rays emitted by the light source are reflected by the reflecting surface of the second reflector 8 to the second focus 24 and are transmitted by the lens in a beam of substantially parallel rays. Such a ray is illustrated by a solid line from the light source 16, 18 to the Through the reflective surface and the second focal point 24, some of the rays, especially those emitted from a front lateral zone of the light source, meet the folder 26 at the rear of the focus 24. They are reflected or "folded" towards a upper part of the lens with an angle of incidence as they come out of the lens inclined slightly downwards.
  • the folder thus plays the role of a cache in a conventional projection system and the projection of its edge forms the horizontal cut of the projected beam, this cutoff being useful in particular for a lighting function of the "code” type.
  • the folder comprises a projection at the front edge, so-called cutting edge, so that the cut is higher on one side than the other of the vertical median plane in order to project a cut. beam type "code" in accordance with the legislation.
  • the figure 3 is a view similar to that of the figure 2 where among the two reflectors, only the lower reflector, namely the first reflector, is illustrated.
  • This view is enlarged and illustrates certain optical features of the module according to the invention.
  • a first ray interrupted and corresponding to that of the figure 2 is illustrated. It is emitted by the light source 22, is reflected by the reflective surface, penetrates the transparent plate 6 and undergoes a first refraction, passes through the blade, passes through the focus 24, leaves the blade and undergoes a second refraction before meeting the lens in its upper half.
  • a second ray is shown in solid lines. It is emitted by an off-center zone of the light source 22 and is reflected towards an area of the folder slightly behind the second focal point 24.
  • the upper edge of the blade forming the folder is inclined from the cutting edge towards the bottom of the module in order to further concentrate the rays reflected by the folder.
  • the figure 4 is an enlarged view of the top of the blade.
  • the upper edge 26 included in the horizontal median plane is illustrated in solid lines.
  • the inclined upper edge 36 is shown in broken lines. It has a draft angle ⁇ relative to the horizontal median plane. This angle corresponds to a clearance of height d at the rear face of the blade.
  • a ray 28 from the first reflector 10 and penetrating the blade is illustrated. It is refracted and undergoes a first deflection 30.
  • the outgoing ray 40 undergoes a second refraction and forms an angle ⁇ 'with the normal to the front face of the blade which is less than the value ⁇ of the same incident ray reflected by the inclined bender 36. Because of these two effects, the Outgoing ray 40 will meet the lens at a lower incident angle and at a point closer to the optical axis. The projected beam from such rays will therefore be closer to the horizontal and provide higher photometric illumination due to lower losses by glassy reflections, especially on the front face of the blade and on the faces of the lens.
  • the material of the blade will preferably be glass as opposed to plastic materials for reasons of temperature resistance. Indeed, the presence of the lens has the effect that the external sunlight can concentrate via the lens at the focus 24 and overheat the material of the blade.
  • the edge of the blade opposite the edge serving as a folder may also be similarly inclined, and this symmetrically so as to reduce the height of the rear face of a given value. Although this slice of the blade does play no role from the point of view of optics, such inclination or clearance angle simplifies the shaping of the blade by simplifying demolding in a direction perpendicular to the front and rear faces. The optical faces can then be surfaced to ensure flatness and optical qualities.
  • the reflective surface of the first reflector is corrected to compensate for the first refraction to which the rays are subjected upon entry into the blade.
  • the calculation of the correction of the surface will be described below in relation to the figure 5 .
  • the calculation is based on the application of the Huygens principle and Fermat's optical path principle.
  • the light spreads from one to the next, the set of points of equal light disturbance being called the wave surface.
  • Each point of this surface reached by light behaves like a secondary source that emits spherical wavelets in an isotropic medium.
  • the envelope surface of these wavelets forms a new wave surface.
  • n vs / v
  • c and v are the speed of light in the vacuum and in the medium, respectively.
  • the optical path is the path traveled by the light traveled in a vacuum during the propagation time in the medium:
  • s denotes the curvilinear abscissa along the path traveled in the middle between points A and B, and AB the length of the path traveled between A and B.
  • the Fermat principle is stated: between two points A and B, reached by the light, the optical path followed along the path is stationary.
  • K which is the optical path from O to F
  • the vector FP is known since the points F and P are known, the vector i has been calculated on the basis of the above-mentioned calculation and ⁇ is known, it is then sufficient to set a constant K which is suitable for then calculating the value of p and deducing a point from the surface for a vector r given.
  • K is suitable for then calculating the value of p and deducing a point from the surface for a vector r given.
  • the skilled person will have no difficulty in implementing such a calculation including numerical iterative calculation methods.
  • the reflector is corrected so as to transform a spherical wave surface from a source point F to the surface of the emitter into a spherical wave surface in the material of the blade, centering the second focus 24, this second focus being located in the material of the blade in the vicinity of its front exit face and its upper face (slice).
  • the elliptical reflective surface correction is applicable to various configurations, including the configuration of the reflector 10 of the present invention, as well as to a conventional configuration as shown in broken line at the end of FIG. figure 5 .
  • the correction does not necessarily have to be made on the entire reflective surface but essentially on the area reflecting the rays that will form the central part of the beam.
  • the figure 6 illustrates an elliptical reflector configuration in a half-space and whose surface is generally oriented towards the optical axis of the module, showing in particular the effect of the reflective surface correction.
  • it illustrates a lighting module configuration with two elliptical reflectors 8 and 42 in opposite half-spaces and whose reflective surfaces are both directed towards the optical axis 2 of the module.
  • the optical axes of the reflectors are slightly inclined to provide a space for cooling the light sources 16, 18 and 44.
  • a first ray from the light source 44 and reflected at a point A is shown in solid lines.
  • the broken line associated with the solid line illustrates the optical path that would follow the ray if the reflecting surface was not corrected according to the transparent blade 6; namely, this ray would be refracted as it enters the blade and would be deflected from the second focus 24.
  • a second ray from the light source 44 and reflected at a point B closer to the optical axis of the reflecting surface is shown in a line. full. This grazing ray and directed towards the hearth 24 will meet the space dedicated to cooling and get lost instead of penetrating the blade. In this configuration, some of the rays will be lost in the cooling radiator of the light sources. This situation is all the more true as the surface of the reflector is corrected.
  • this correction has the effect of reflecting the rays from the light source so as to have a deviation from the second focus, this deviation being such that the rays are oriented towards a point at the rear of the second focus, which intensifies the problem of loss of rays in the space needed to cool the light sources.
  • the figure 7 illustrates the effect of reflective surface correction for an elliptical reflector configuration in a half-space and whose surface is generally opposite to the optical axis of the module.
  • a first ray coming from the light source 22 and reflected at a point A of the corrected reflecting surface is shown in solid lines. In the absence of correction of the surface, this ray would point to the second focus 24 but would be deflected when it enters the blade and would pass below the focus. This line is illustrated in broken lines.
  • the reflector about 180 ° on its optical axis has on the one hand to minimize or even eliminate the thickness of the dead volume adjacent to the rear edge of the folder, and secondly tilt the rays reflected by the reflector so that most of them do not get lost in building elements of the module.
  • the correction of the reflective surface is all the more interesting in this configuration that the average angle of incidence on the rear face of the blade is important.
  • a second ray coming from the light source and reflected by a point B further from the optical axis of the reflector is also illustrated. This spoke will meet the complementary folder 9 so as to be returned to the blade and participate in the production of ambient light beam.
  • the preferred light source is of the electroluminescence diode type.
  • Such a source illuminates in a half-space but concentrates a major part of the lighting power in a cone centered on its main illumination axis (that is to say a perpendicular to the optical axis of the reflector), so that the configuration of the figure 7 will allow the spokes forming most of the lighting power to work optimally.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
EP11174428.0A 2010-07-19 2011-07-18 Optischer Reflektor auf transparenter Scheibe mit Hinterschnitt Active EP2410238B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1055851A FR2962785B1 (fr) 2010-07-19 2010-07-19 Plieuse sur lame transparente avec depouille

Publications (2)

Publication Number Publication Date
EP2410238A1 true EP2410238A1 (de) 2012-01-25
EP2410238B1 EP2410238B1 (de) 2014-11-19

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FR (1) FR2962785B1 (de)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1260758A1 (de) * 2001-05-25 2002-11-27 Valeo Vision Kfz-Scheinwerfer
EP1357334A1 (de) 2002-04-25 2003-10-29 Valeo Vision Elliptische Beleuchtungsbaugruppe ohne Lichtblende zur Erzeugung eines Abblendlichtes und Scheinwerfer mit einer derartigen Beleuchtungsbaugruppe
EP1666787A1 (de) * 2004-12-06 2006-06-07 Valeo Vision Beleuchtungseinrichtung für Kraftfahrzeugscheinwerfer
US20070147062A1 (en) * 2005-12-28 2007-06-28 Koito Manufacturing Co., Ltd. Vehicle headlamp
FR2917484A1 (fr) 2007-06-18 2008-12-19 Valeo Vision Sa Module optique pour dispositif d'eclairage automobile
EP2302292A1 (de) * 2009-09-29 2011-03-30 Valeo Vision Optisches Modul mit Falzmaschine, das aus einem Diopter für transparentes Material/Luft gebildet wird

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1260758A1 (de) * 2001-05-25 2002-11-27 Valeo Vision Kfz-Scheinwerfer
EP1357334A1 (de) 2002-04-25 2003-10-29 Valeo Vision Elliptische Beleuchtungsbaugruppe ohne Lichtblende zur Erzeugung eines Abblendlichtes und Scheinwerfer mit einer derartigen Beleuchtungsbaugruppe
EP1666787A1 (de) * 2004-12-06 2006-06-07 Valeo Vision Beleuchtungseinrichtung für Kraftfahrzeugscheinwerfer
US20070147062A1 (en) * 2005-12-28 2007-06-28 Koito Manufacturing Co., Ltd. Vehicle headlamp
FR2917484A1 (fr) 2007-06-18 2008-12-19 Valeo Vision Sa Module optique pour dispositif d'eclairage automobile
EP2302292A1 (de) * 2009-09-29 2011-03-30 Valeo Vision Optisches Modul mit Falzmaschine, das aus einem Diopter für transparentes Material/Luft gebildet wird

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Publication number Publication date
EP2410238B1 (de) 2014-11-19
FR2962785B1 (fr) 2014-11-21
FR2962785A1 (fr) 2012-01-20

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