EP3044501B1 - Beleuchtungsmodul für ein fahrzeug - Google Patents

Beleuchtungsmodul für ein fahrzeug Download PDF

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Publication number
EP3044501B1
EP3044501B1 EP14761993.6A EP14761993A EP3044501B1 EP 3044501 B1 EP3044501 B1 EP 3044501B1 EP 14761993 A EP14761993 A EP 14761993A EP 3044501 B1 EP3044501 B1 EP 3044501B1
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EP
European Patent Office
Prior art keywords
laser
conversion device
light
radiation
wavelength conversion
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EP14761993.6A
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English (en)
French (fr)
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EP3044501A1 (de
Inventor
Pierre Albou
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Valeo Vision SAS
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Valeo Vision SAS
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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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • 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
    • F21S41/16—Laser light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • 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
    • F21S41/176—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
    • 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
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors

Definitions

  • the present invention relates to a lighting module intended to be arranged in a headlight of a motor vehicle and to a method for producing a lighting beam produced by this lighting module.
  • the invention also relates to a projector comprising such a lighting module.
  • Such a lighting module is known from the documents DE 10 2012 100 141 A1 and US 2011/0249460 A1 .
  • headlamps equip the front of motor vehicles and are capable of forming lighting beams which are capable of fulfilling different lighting functions taking into account traffic conditions, such as, for example, low beam, city lighting functions , road or anti-fog.
  • traffic conditions such as, for example, low beam, city lighting functions , road or anti-fog.
  • adaptive projectors which are capable of forming advanced lighting beams, also called adaptive whose dimensions, intensity and / or direction are adjusted to fulfill such functions.
  • These headlamps make it possible in particular to carry out the functions of directional lights, of adaptive high beams or without glare, comprising at least one zone for masking the beam in the zones where vehicles are crossed or followed.
  • Each projector is generally made up of several lighting modules making it possible to obtain sufficient light power in order to form a lighting beam. Each of these lighting modules then forms part of the lighting beam of the projector by being switched on or off separately from one another.
  • lighting module is meant an assembly comprising at least one light source and an optical projection or reflection system.
  • the light source is a laser source.
  • the module then includes a wavelength conversion device.
  • This laser light source of the lighting module is capable of emitting radiation towards a scanning system such as a micro-mirror mounted mobile around two orthogonal axes.
  • This radiation is then diverted by this scanning system to at least one wavelength conversion device which comprises a substrate made of reflective or transparent material on which a thin layer of phosphorescent material is deposited.
  • phosphorescent material is meant a material having a phosphorescent effect, generally comprising different chemical elements, but not necessarily containing phosphorus.
  • the conversion device thus being scanned by the scanning system, re-emits white light radiation towards an optical projection system and thus forms part of the lighting beam of the projector.
  • the modules of such a projector are controlled by a control unit which controls the activation of the laser light sources and the scanning systems for carrying out the various lighting functions of the projector.
  • such a projector generally produces a light beam which may have color differences due to the fact that each part of this beam is produced by each of these light modules and in particular because of the variability of the layers of phosphorescent material. from one module to another.
  • each lighting module equipping this projector is not very efficient compared to the nominal power of the laser sources: in fact, the rate of use of the laser power is low because during its use the laser is frequently under-watted to form a usual regulatory beam and avoid generating light points in the beam which would not meet the regulatory maximums. This is also necessary to avoid visual discomfort for the driver, linked to too strong lighting near the vehicle.
  • the object of the present invention is to remedy all or part of the various drawbacks mentioned above.
  • the subject of the invention is a lighting module for a motor vehicle headlight according to the features of claim 1.
  • the invention also relates to a headlight for a motor vehicle comprising a lighting module according to the invention, in particular a single lighting module according to the invention.
  • the last object of the invention is a method of producing a lighting beam comprising the features of claim 10.
  • the lighting module and therefore the projector which includes it are of a design cost and a small footprint.
  • this lighting module makes it possible to carry out all the lighting functions taking into account traffic conditions and the regulations in the matter, by comprising only a single wavelength conversion device and a single projection optical system.
  • the beam generated is homogeneous in color and a precise superposition of the different parts of the beam is carried out without requiring mechanical adjustment between modules of the same projector, since there is only one module left.
  • the lighting module according to this embodiment of the invention comprises first 1 and second 2 sources of light radiation.
  • first 1 and second 2 sources of light radiation are capable of emitting laser radiation L1, L2 towards a single conversion device 3 of common wavelength, which is then capable of transmitting this beam to an optical projection system 4.
  • this first light radiation source 1 comprises: a first laser light source 9 and a reflector 10.
  • a first laser light source 9 does not include optical focusing elements or other elements between the laser source and the reflector; the first laser light source 9 cooperates directly with the reflector 10.
  • optical elements may be provided to combine the laser rays from the different laser sources. These combination optical elements can for example be based on a mixture of the polarizations of the laser rays and / or a mixture of different wavelengths and / or a juxtaposition of the images of the laser sources.
  • the second light radiation source 2 comprises a second laser light source 6, a scanning system 7 and optical elements 8 for focusing. These optical focusing elements 8 are located between the second laser light source 6 and the scanning system 7. Thanks to the scanning system, the image from the conversion device is made dynamic and allows adaptive lighting beams to be produced.
  • the scanning system 7, the reflector 10 and the optical projection system 4 are located on the same side of the conversion device 3, that is to say that the conversion device 3 is used in reflection.
  • the first 9 and second 6 laser light sources are quasi-point light sources which consist of a laser diode emitting a visible beam whose wavelength is between 400 nanometers and 500 nanometers, and preferably close to 450 or 460 nanometers. These wavelengths correspond to colors ranging from blue to near ultraviolet, the latter color being rather situated towards wavelengths less than 400 nanometers.
  • This laser diode can be provided with a single cavity and have a power of between approximately 1 and 3.5 watts, preferably 1.6 watts or even 3 watts.
  • This laser diode comprises an output facet whose dimensions can be of the order of 14 ⁇ m by 1 ⁇ m. It is capable of emitting a beam of elliptical section whose vertical and horizontal light intensity distribution profiles are Gaussian.
  • the first source of light radiation 1 is said to be static because it allows a static image to be formed on the wavelength conversion device 3.
  • this first source of light radiation 1 may be quasi-static because it can be moved according to a low angular amplitude in particular and especially at low speed, in particular to ensure a range correction which corresponds to small slow and overall vertical movements to compensate for the vehicle load or its dynamic reaction to braking and acceleration.
  • the first source of light radiation 1 is static, with a reflector 10 mounted fixedly, it will be possible in conventional manner to carry out a range correction with mechanical means located outside the module and acting on the inclination of the whole module.
  • the reflector 10 is a static mirror, mounted fixed, or almost static, mounted in rotation about a horizontal axis in order to carry out the vertical range correction movements required.
  • quasi static is meant in the present application that it is driven by a movement of low amplitude and low speed, less than 15 ° .s -1 , preferably less than 10 ° .s -1 , advantageously less than 4 ° .s -1 .
  • the speed of oscillation around the horizontal axis of the reflector 10 is at least ten times lower, preferably twenty times lower, preferably at least fifty times lower.
  • the reflector 10 can be made of metal, for example an aluminum-based alloy or even be of aluminized glass on at least one face. It is small and can have the following dimensions: a height of about 1.5 to 6 mm, and a width of about 5.5 to 20 mm.
  • This reflector 10 can be mounted fixed relative to the first laser light source 9.
  • the reflector is almost static, that is to say that it can also be mounted mobile around a axis and controlled for example by a servomotor or piezoelectric shims to perform the range correction movements, as mentioned above.
  • This reflector 10 reflects laser radiation L1 coming from this first laser light source 9 towards the wavelength conversion device 3.
  • the scanning system 7 of the second light radiation source 2 relates, according to a preferred variant, to a micro-mirror which can be square in shape and each side of which can measure approximately 0.8 mm.
  • This micro-mirror is made mobile around two orthogonal axes, for example from a MEMS device (acronym "Micro Electro Mechanical Systems” meaning “Micro Electromechanical Systems”).
  • the scanning system can be constituted by the association of two micro-mirrors, each being movable around a single axis, the two axes being orthogonal.
  • This scanning system 7 reflects laser radiation L2 coming from the second laser light source 6 towards the wavelength conversion device 3. This radiation L2 can then be deflected in two directions by the scanning system 7.
  • the second laser light source 6 and the scanning system 7 can be included in a MOEMS (acronym for "Micro-Opto-Electro-Mechanical Systems", meaning “microoptoelectromechanical system”).
  • a MOEMS is an optical system comprising, in this case, at least one laser light source and a scanning system 7.
  • MOEMS are compact devices, reliable, simple to use and which allow high precision and great flexibility in redirecting L2 laser radiation to the conversion device 3.
  • the second light radiation source 2 comprises a single light source, it can however in an alternative comprise, for example, two laser light sources each emitting radiation towards the same scanning system 7. In alternatively, these two sources can each emit L2 radiation to separate scanning systems.
  • the lighting module can comprise three scanning systems 7 each equipped with one or more laser light sources.
  • the creation of the light beam in its upper part projected onto the road is thus optimized.
  • the first light radiation source 1 comprises a single laser source 9. In the context of the invention, it may include more than one source, for example two laser sources each emitting radiation laser towards the mirror 10, the rays of these two sources possibly being combined before reaching the mirror.
  • the wavelength conversion device 3 included in the lighting module comprises a substrate forming a reflective support 12 which is covered with a continuous layer 11 of a phosphorescent material.
  • This support 12 of the conversion device 3 is chosen from materials which are thermally good conductors. Such materials thus allow the support 12 to limit the degradation of the layer 11 of phosphorescent material by restricting the temperature rise of the conversion device 3 and of the layer 11.
  • the layer 11 of phosphorescent material is capable of re-emitting radiation 16 of white light. Indeed, when the first 1 and second 2 sources of light radiation respectively emit laser radiation L1, L2 monochromatic and coherent towards the conversion device 3, the latter receives this laser radiation L1, L2 and re-emits radiation 16 of white light which has a plurality of lengths of wave belonging to the visible light spectrum and between approximately 400 nanometers and 800 nanometers.
  • This emission of white light occurs, according to a Lambertian emission diagram, that is to say with uniform luminance in all directions.
  • the substrate of this conversion device 3 is made for example of metallic material, in particular aluminum.
  • This metallic material constituting the substrate has good characteristics and properties in terms of conduction and thermal resistance.
  • the substrate advantageously makes it possible to limit the temperature of the layer 11 of phosphorescent material, by promoting the dissipation of heat.
  • this substrate can be exposed to laser powers without decomposing, which can be, for example, of the order of 15 watts.
  • the conversion device 3 is therefore arranged in the lighting module so as to be able to receive laser radiation L1, L2 originating from the first source of light radiation 1 and from the second source of light radiation 2. This is therefore a conversion device 3 common to all of the laser light sources.
  • This conversion device 3 is located in the vicinity of the focal plane of the optical projection system 4 which then infinitely forms an image of the layer 11 of phosphorescent material, or more exactly of the points of this layer 11 which emit light in response to the laser excitation resulting from the laser radiation L1, L2 that they receive from the first 1 and second 2 sources of light radiation.
  • the optical projection system 4 forms an illumination beam 15 with the light radiation 16 emitted by the various points of the layer 11 of phosphorescent material illuminated by these laser radiations L1, L2.
  • the lighting beam 15 emerging from the lighting module is thus a direct function of the light rays emitted by the layer 11 of phosphorescent material, itself a function of the laser radiation L1, L2 absorbed by this layer 11.
  • the laser radiation L2 coming from the second light radiation source 2 forms an image to be projected by the optical projection system 4, by scanning while taking advantage of the retinal persistence and / or of the metastability of the phosphorescent material.
  • first 1 and second 2 sources of light radiation, the conversion device 3 and the projection optical system 4 are included in this single lighting module which equips a projector.
  • This lighting module also comprises a control unit 5 which is capable of controlling the first 1 and second 2 sources of light radiation as a function of the desired photometry of the lighting beam 15 produced by this lighting module.
  • the control unit 5 controls the scanning system 7 so that the laser radiation L2 successively scans all the zone points of the layer 11 of the phosphorescent material selected by this control unit 5.
  • the control unit 5 also controls the activation and the control of the power of the first 1 and second 2 laser light sources and, if necessary, the modulation of the intensity of the laser radiation L1, L2.
  • the points of the layer 11 of the phosphorescent material thus illuminated by the laser radiations L1, L2 emit light, with an intensity which is directly a function of the intensity of these laser radiations L1, L2 which illuminate these points, l 'emission taking place according to a Lambertian emission diagram.
  • this lighting module is capable of emitting a lighting beam 15.
  • This lighting beam 15 corresponds to the superposition of light beams resulting from the first 1 and second 2 sources of light radiation cooperating with the wavelength conversion device 3 and the optical projection system 4. This superposition can be partial or complete or only concern a fraction of the respective contours of these beams.
  • This lighting beam 15 can result from the superposition of at least two different light beams, here the first 14 and second 13 light beams, but also from the superposition of more than two beams.
  • the second source of light radiation 2 can emit beams produced by several sources of laser light cooperating with one or more scanning systems.
  • FIG. 2 To the figure 2 , is illustrated an example of a light beam 15 produced by the lighting module, known as a passing beam or code as appearing on a flat projection surface.
  • the planar projection surface is arranged facing the lighting module, perpendicular to the optical axis of the latter.
  • This low beam type lighting beam 15 results from the superposition of the first light beam 14 and the second light beam 13.
  • the first light beam 14 is produced by the first light radiation source 1.
  • This first beam 14 represented on the figure 3 , creates a horizontal cut-off line 18.
  • This horizontal cut-off line 18 is a limit lighting line above which it is prohibited to illuminate the road. In countries with right-hand traffic, this cut line is horizontal across the width of the road and on the left side of the road.
  • the first laser light source 9 is capable of emitting laser radiation L1 which is guided by the reflector 10 towards the upper part 23 of the conversion device 3, in the area located above the horizontal plane of the optical axis AO (shown in dotted lines), in order to concentrate the radiation exclusively under the horizontal cut-off line 18.
  • the conversion device 3 then re-emits radiation 16 of white light towards the optical projection system 4 which forms thus the first light beam 14.
  • the reflector 10 is calculated to produce this horizontal cut-off line 18 as well as a controlled energy distribution to produce this first light beam 14.
  • This first light beam 14 represents a portion of the lighting beam 15 which is common to all the lighting beams regulatory, including crossing or road, likely to be produced by the lighting module. This first light beam 14 generally corresponds to the lower part of the regulatory lighting beams.
  • These regulatory lighting beams correspond to approved lighting configurations which fulfill the various lighting functions taking into account traffic conditions, such as low beam, city, motorway, gantry or even fog, etc ...
  • this first light beam 14 fulfills a lighting function at the front of the vehicle on the ground up to approximately 0.5 to 1.5 degrees below the horizon.
  • the second light beam 13 achieves a non-flat cut, having a horizontal segment 19 which extends into an inclined portion 17 forming an angle of about 10 to 60 degrees upward relative to the horizontal.
  • the superposition of the second light beam 13 with the first light beam 14 has an overlap area 20 which has a high light intensity.
  • This overlap area 20 otherwise called “light spot”, or “hot spot” is, generally, located in the center of a halo of less intense light.
  • This zone 20 is here positioned substantially at the center of the lighting beam 15 in the axis of said beam 15. In a configuration where the headlamp is of the directional type, that is to say where the upper part of the beam (at above the cut-off line) is offset in the direction of the orientation of the front wheels of the vehicle, this zone 20 will undergo a displacement relative to the axis of the beam, according to the orientation to the left or to the right of the wheels.
  • the light beam 15 of the low beam type obtained has a non-flat cut-off line, essentially constituted a low horizontal part 21, followed by a step 17, consisting of an oblique segment at the projection of the optical axis, then a substantially horizontal high part 22.
  • a non-flat cut-off line essentially constituted a low horizontal part 21, followed by a step 17, consisting of an oblique segment at the projection of the optical axis, then a substantially horizontal high part 22.
  • the role of such a lighting beam 15 of the code type is to prevent the lighting of the vehicle from dazzling a driver in a vehicle in the opposite direction or the vehicle preceding it.
  • This example of a beam corresponding to a crossing light beam 15 is applicable to right-hand traffic. This example is of course directly transferable to left-hand traffic conditions.
  • the lighting beam 15 produced by the lighting module is homogeneous because in this embodiment, the first laser light source 9 has the same characteristics as the second laser light source 6 and the latter both emit radiation L1 , L2 to the same conversion device 3.
  • the lighting module is of course capable of producing other lighting functions in the same way taking into account traffic conditions and regulations in this area, in particular adaptive road beams or with anti-glare function.
  • the reflector 10 has a particular surface 24 which can be determined from the definition of the transformation by reflection on this surface 24 of a Gaussian elliptical beam coming from the first laser light source 9 whose intersection with the conversion device 3 forms an area delimited by a horizontal cut.
  • this area illuminated by the first laser light source 9 will then, from the conversion device 3, become a quasi-Lambertian white light source which is imaged endlessly by the projection optical system 4.
  • sections of the reflector 10 are then determined by a vertical plane and a horizontal plane passing through a source point corresponding to the first laser light source 9.
  • These vertical and horizontal sections of the reflector 10 are determined by imposing the direction of a ray emitted by the first laser light source 9 and reflected along these sections of the reflector 10 at a current point so that the point d impact of the reflected ray r of vector r on the conversion device 3 describes a horizontal line for the horizontal cut and a vertical line in the case of the vertical cut.
  • differential equations which are written in a canonical form.
  • These differential equations come from the law of reflection expressed in vector form.
  • minimization under constraints is then carried out to determine the position x of the current point P i, j . It is a question here of minimizing the distance from the point of impact P i on the device 3 for converting the reflected ray. r , compared to an ideal point of impact D there i ⁇ z i ⁇ considered whose coordinates are on vertical and horizontal sections.
  • This minimization is then subsequently carried out by this algorithm for all the impact points capable of being defined on the surface 24 of this reflector 10 by the first laser light source in order to produce the first light beam 14.
  • the method for determining the surface of the mirror 10 which has just been exposed in the case of a single laser source can be transposed to a configuration in which the laser sources of the first light source 1 are combined.
  • the center of the virtual laser source resulting from the combination of the rays will be taken as center O of the frame of reference.
  • the laser rays have a transverse section of the Gaussian elliptical type and therefore comprise a large and a small axis.
  • the laser sources are then placed so that either the plane of the large axes or that of the small axes are merged. If the rays do not overlap (for a width of 1 / e 2 ) then each laser beam is reflected on a dedicated portion of the mirror, calculated as detailed above (each source is considered individually). If there is a superposition of laser rays, then the mirror 10 will be of the cylindrical type, its cross section being calculated as detailed above for one of the laser sources and the laser sources of the first light source 1 are aligned along a line parallel to l axis of the mirror cylinder.
  • the present invention is not limited to the embodiments which have been explicitly described, but it includes the various variants and generalizations thereof contained in the field of claims below.
  • the scanning variations of the conversion system to obtain an advanced lighting function can then be generated by using a hiding device, for example rotary, which will create cut lines.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)

Claims (10)

  1. Beleuchtungsmodul für einen Kraftfahrzeugscheinwerfer mit einer ersten (1) und einer zweiten (2) Lichtstrahlungsquelle, die in der Lage sind, eine Laserstrahlung (L1, L2) an eine Wellenlängenkonversionsvorrichtung (3) abzugeben, die in der Lage ist, eine Lichtstrahlung (16) an ein optisches Projektionssystem (4) zu reemittieren, um ein Beleuchtungsbündel (15) zu erzeugen, wobei das Modul eine einzige Wellenlängenkonversionsvorrichtung (3) umfasst, die der Laserstrahlung (L1, L2) gemeinsam ist, dadurch gekennzeichnet, dass die erste Lichtstrahlungsquelle (1) mindestens eine erste Laserlichtquelle (9) umfasst, die mit einem einzigen Reflektor (10) zusammenwirkt, der ein fest oder um eine horizontale Achse drehbar montierter Spiegel ist und mit einer Bewegung mit geringer Amplitude und geringer Geschwindigkeit angetrieben wird, die weniger als 15°.s-1 beträgt, vorzugsweise weniger als 10°.s-1, vorzugsweise weniger als 4°.s-1, und die zweite Lichtquelle (2) mindestens eine zweite Laserlichtquelle (6) aufweist, die mit mindestens einem Abtastsystem (7) mit mindestens einem um eine horizontale Achse beweglichen Mikrospiegel zusammenwirkt.
  2. Beleuchtungsmodul nach Anspruch 1, dadurch gekennzeichnet, dass die erste Lichtstrahlungsquelle (1) oberhalb einer optischen Achse der Projektionsoptik (4) angeordnet ist.
  3. Beleuchtungsmodul nach einem der Ansprüche 1 bis 2, dadurch gekennzeichnet, dass die erste Laserlichtquelle (9) oberhalb oder vertieft von der Wellenlängenkonversionsvorrichtung (3) angeordnet ist.
  4. Beleuchtungsmodul nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass der Reflektor (10) vor der ersten Laserlichtquelle (9) oberhalb einer optischen Achse des projektionsoptischen Systems (4) zwischen der Wellenlängenkonversionsvorrichtung (3) und dem projektionsoptischen System (4) angeordnet ist.
  5. Beleuchtungsmodul nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass der Reflektor (10) ein Spiegel aus Metall, insbesondere aus einer Legierung auf Aluminiumbasis, ist.
  6. Beleuchtungsmodul nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die erste Laserlichtquelle (9) in der Lage ist, Laserstrahlung (L1) zum Reflektor (10) zu emittieren, der in der Lage ist, sie auf einen oberen Teil (23) der Oberfläche der Wellenlängenkonversionsvorrichtung (3) zu richten.
  7. Beleuchtungsmodul nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die zweite Lichtstrahlungsquelle (2), der Reflektor (10) und die Projektionsoptik (4) auf derselben Seite der Wellenlängenkonversionsvorrichtung (3) angeordnet sind.
  8. Beleuchtungsmodul nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die erste (9) und die zweite (6) Laserlichtquelle Laserdioden sind, insbesondere Laserdioden mit gleichen Eigenschaften.
  9. Kraftfahrzeugscheinwerfer mit einem Lichtmodul nach einem der vorstehenden Ansprüche, insbesondere einem einzigen Lichtmodul nach einem der vorstehenden Ansprüche
  10. Verfahren zur Erzeugung eines Beleuchtungsstrahls (15) für einen Kraftfahrzeugscheinwerfer mit den folgenden Schritten :
    - Bildung eines ersten Lichtbündels (14), das einen ersten Teil erzeugt, der der untere Teil des genannten Lichtbündels (15) ist, der mittels einer ersten Lichtstrahlungsquelle (1) auf die Straße projiziert wird, die mindestens eine erste Laserlichtquelle (9) umfasst, die eine Laserstrahlung (L1) aussendet, die von einem einzigen Reflektor (10) gerichtet wird, der ein fest oder um eine horizontale Achse drehbar montierter Spiegel ist und mit einer Bewegung mit geringer Amplitude und geringer Geschwindigkeit angetrieben wird, die weniger als 15°.s-1 beträgt, vorzugsweise weniger als 10°.s-1, vorzugsweise weniger als 4°.s-1, auf eine einzel Wellenlängenkonversionsvorrichtung (3), wobei die Wellenlängenkonversionsvorrichtung (3) Lichtstrahlung an ein optisches Projektionssystem (4) zurückstrahlt,
    - Bildung eines zweiten Lichtstrahls (13), der einen zweiten Teil des genannten Beleuchtungsstrahls (15) mit Hilfe einer zweiten Lichtstrahlungsquelle (2) erzeugt, die mindestens eine zweite Laserlichtquelle (6) umfasst, die mit mindestens einem Abtastsystem (7) zusammenwirkt, das mindestens einen um eine horizontale Achse beweglichen Mikrospiegel umfasst, die zweite Laserlichtquelle (6), die Laserstrahlung (L2) emittiert, die von dem Abtastsystem (7) auf die einzel Wellenlängenkonversionsvorrichtung (3) gerichtet ist, wobei die Wellenlängenkonversionsvorrichtung (3) Lichtstrahlung zu dem optischen Projektionssystem (4) wieder emittiert, und
    - mindestens teilweise Überlagerung des ersten (14) und zweiten (13) Lichtstrahls.
EP14761993.6A 2013-09-10 2014-09-10 Beleuchtungsmodul für ein fahrzeug Active EP3044501B1 (de)

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FR1358709A FR3010486B1 (fr) 2013-09-10 2013-09-10 Module d'eclairage pour vehicule
FR1362276A FR3010487A1 (fr) 2013-09-10 2013-12-09 Module d'eclairage pour vehicule
PCT/EP2014/069270 WO2015036425A1 (fr) 2013-09-10 2014-09-10 Module d'éclairage pour véhicule

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FR3030017B1 (fr) 2014-12-10 2019-10-04 Valeo Vision Module lumineux et projecteur muni d'un tel module.
JP6455710B2 (ja) 2015-01-22 2019-01-23 スタンレー電気株式会社 車両用灯具
EP3279551A4 (de) * 2015-03-31 2018-12-26 Panasonic Intellectual Property Management Co., Ltd. Beleuchtungsvorrichtung
FR3036772A1 (fr) * 2015-05-29 2016-12-02 Valeo Vision Projecteur pour vehicule automobile
JP6581002B2 (ja) * 2016-01-25 2019-09-25 スタンレー電気株式会社 前照灯装置
DE102016210918A1 (de) * 2016-06-20 2017-12-21 Osram Gmbh Lichtquelle mit Laser Activated Remote Phosphor-Technologie für ein Fahrzeug und Beleuchtungseinrichtung mit der Lichtquelle
FR3054642B1 (fr) * 2016-07-29 2020-07-17 Valeo Vision Module d'eclairage de projecteur de vehicule automobile a faisceau d'ouverture variable
FR3061538B1 (fr) * 2017-01-02 2019-05-24 Valeo Vision Dispositif d'eclairage pour un vehicule, combinant deux sources lumineuses
JP6981174B2 (ja) * 2017-10-25 2021-12-15 トヨタ自動車株式会社 車両用前照灯装置
DE102018129216A1 (de) * 2018-11-20 2020-05-20 Automotive Lighting Reutlingen Gmbh Verfahren zum Betreiben eines Kraftfahrzeugscheinwerfers

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EP3044501A1 (de) 2016-07-20
WO2015036425A1 (fr) 2015-03-19
FR3010487A1 (fr) 2015-03-13
FR3010486B1 (fr) 2018-01-05

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