WO2015049048A1 - Système d'éclairage pour véhicule automobile et véhicule automobile - Google Patents

Système d'éclairage pour véhicule automobile et véhicule automobile Download PDF

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Publication number
WO2015049048A1
WO2015049048A1 PCT/EP2014/002668 EP2014002668W WO2015049048A1 WO 2015049048 A1 WO2015049048 A1 WO 2015049048A1 EP 2014002668 W EP2014002668 W EP 2014002668W WO 2015049048 A1 WO2015049048 A1 WO 2015049048A1
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WO
WIPO (PCT)
Prior art keywords
laser light
reflector
lighting device
radiation converter
light source
Prior art date
Application number
PCT/EP2014/002668
Other languages
German (de)
English (en)
Inventor
Carsten Gut
Jürgen Wilhelmy
Original Assignee
Audi Ag
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Audi Ag filed Critical Audi Ag
Priority to EP14780762.2A priority Critical patent/EP3052853B1/fr
Publication of WO2015049048A1 publication Critical patent/WO2015049048A1/fr

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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
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/10—Protection of lighting devices
    • 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
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/338—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having surface portions added to its general concavity
    • 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
    • F21S41/37—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors characterised by their material, surface treatment or coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/70—Prevention of harmful light leakage
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S45/00—Arrangements within vehicle lighting devices specially adapted for vehicle exteriors, for purposes other than emission or distribution of light
    • F21S45/40—Cooling of lighting devices
    • F21S45/47—Passive cooling, e.g. using fins, thermal conductive elements or openings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/30—Semiconductor lasers

Definitions

  • the invention relates to a lighting device for a motor vehicle, comprising a laser light source, a radiation material containing a fluorescent material, in particular phosphorus, and a reflector, wherein emitted from the laser light source laser light in the radiation converter in compared to the laser light broadbandigeres, in particular white secondary light converted and fanned is, which secondary light is deflected by the reflector in a direction of emission of the illumination device.
  • the invention relates to a motor vehicle.
  • lighting devices for motor vehicles have been proposed, whose light source is a laser light source, in particular comprising at least one laser diode.
  • the light from at least one laser diode can be directed through a light guide onto a reflector which reflects it in a direction of emission.
  • laser light sources generate light of a certain wavelength, on the other hand extremely focused light. While it is fundamentally conceivable to combine the light of several laser diodes of different colors, it has also been proposed to use the laser light with the use of a radiation converter (also known as
  • CONFIRMATION COPY Naming light conversion body into white light.
  • radiation converters with phosphorus are known, for example as a phosphor coating, since phosphorus has fluorescent properties and can thus generate broadband secondary light, in particular white secondary light, from laser light of a suitable wavelength. If, for example, blue light is generated in a laser light source and irradiated onto a radiation converter made of yellow phosphor, the radiation converter converts the light into white light.
  • the radiation converter, in particular phosphorus further has the property that a beam divergence occurs, that is, the secondary light is generated fanned out. This beam divergence ensures that any unwanted effect of the focused laser light on people is lifted.
  • a radiation converter may for example consist of a ceramic, is sintered in the phosphor.
  • the radiation converter is removed or damaged, besides the conversion of the laser light into the secondary light, the fanning effect and laser light can be eliminated, which is undesirable.
  • the invention is therefore based on the object to improve a lighting device with regard to damage cases of a radiation converter.
  • a protection means for reducing the light intensity emitted by the illumination device laser light in case of elimination or damage of the radiation converter in an impact area of the reflector, which is exposed to the laser converter in the absence of the Strahlungskonverters is provided.
  • suitable mechanical and / or optical measures are proposed in order to avoid as much as possible the leakage of high-intensity, possibly interfering effects triggering laser light in case of elimination or damage of the radiation converter, so that unwanted Light effects due to stray laser radiation are avoided as far as possible. For example, in this way distractions are avoided by intensively illuminated areas in the illumination area and the like.
  • the radiation converter which preferably consists of or comprises phosphorus, in particular of yellow phosphorus when using blue laser light, basically ensures conversion and fanning out of the laser light, so that secondary light is produced.
  • the beam divergence produced by the radiation converter at least partially disappears when the radiation converter is damaged or at least partially removed, for example falling off.
  • the laser light having a preferred direction has a non-reversed effect on the impact area of the reflector, which is determined, in particular, by the divergence angle of the exiting laser light. If an optical fiber is used, from which the laser light emerges, for example at one end of the optical fiber, the divergence angle of the exiting laser light (laser beam) is determined by the numerical aperture of the optical fiber.
  • this impact area of the reflector such that, at least in the event of a fault, ie when the radiation converter is omitted or damaged, no such reflection occurs that the laser light is deflected as a beam in the direction of emission of the illumination device, that is, the light intensity from out of the illumination device emitted laser light is reduced, preferably zero, so that in case of failure no laser light can escape from the illumination device and can cause disturbing effects.
  • a reduction of the light intensity should be such that disturbing and / or unwanted effects are avoided by the laser light.
  • the illumination device can be configured overall so that an exit surface of the laser light source, in particular an end of a light guide of the laser light source, directly with the radiation converter connected and directed to the reflector and / or that the radiation converter has a Lambertian radiation characteristic.
  • the radiation converter can therefore directly connect to an exit surface of the laser light source, which can also be defined by a focus region of at least one laser diode as a laser light source or at several laser diodes on a beam combiner ("beam combiner") may be formed, so that preferably the exit direction of the laser light source in the direction of The secondary light is thus radiated in the direction of the reflector, where the desired light distribution of the illumination device is formed, whereby the radiation converter, in particular the phosphor body, can have a lambert radiation characteristic in the converting, error-free state, which corresponds to the aforementioned fanning out.
  • the protective means is a diverging element formed from the reflector and / or applied to the reflector.
  • a divergent element ensures that a laser light incident as a beam in the impingement region is fanned out in such a way that the light intensity is distributed over a larger angular range and thus disturbing and / or unwanted optical effects are avoided.
  • the divergent element is formed from the reflector itself, in particular by a suitable shaping, for example by providing a curvature in the area of impact.
  • an additional divergence body as divergent element to the reflector at least in the impact area, for example a diverging coating.
  • the diverging element in the impingement region may have a convex or concave, in particular round shape.
  • An example is a part-ball-like element with a fixed radius of curvature; however, this can vary.
  • the radius of curvature for example, of be made dependent on the expected maximum intensity of the laser beam at the corresponding location, so that a sufficiently divergent reflection property is given.
  • the diverging element is formed in the impact area as a function of the beam geometry of the laser light.
  • the beam geometry also includes the location-dependent beam intensity. This beam geometry can be determined from the special properties of the optical elements used, for example, the already mentioned divergence angle of the exiting laser beam.
  • the advantage of reflecting, diverging elements is generally that the laser light is then not (only) absorbed, but distributed, so that little or little additional cooling is necessary. However, laser light is emitted in most cases, albeit considerably attenuated. With a suitable design of the diverging element, however, this can also be used to advantage by ultimately a kind of "emergency operation" of the lighting device is realized, for example, a glow in the color of the laser light with weaker brightness or the like.
  • the protective means is a jet trap.
  • Beam traps (“beam dumps") are already known in principle in the prior art, in particular for laser light.) Beam traps are optical elements which serve to absorb a light beam, in this case the beam of laser light.
  • black-colored aluminum cones in housings that may have, for example, a ribbed inner wall that is colored black have been proposed, however, depending on the present performance, flat surfaces and the like are also considered Jet traps become known.
  • the jet trap may be an absorption body arranged behind the reflector which is perforated in the impact area.
  • the reflector can be broken in the impact area, so that behind it, for example, a cavity, as described, can follow, in which the laser light is trapped and absorbed.
  • the absorption body it is also possible and preferred for the absorption body to be at least part of a heat sink, in particular a black-colored aluminum heat sink for the lighting device. If an already existing heat sink is used, ultimately, the dissipation of the heat resulting from the absorption of the laser light is also taken care of, so that in the end heat sinks, in particular the heat sinks assigned to the lighting device itself, can be used multiple times. If the heat sink is in any case provided with a ribbed surface, a jet trap can easily be produced, for example, by blackening.
  • the reflector is provided in the impact area with a coating which reflects up to a limit temperature being exceeded.
  • the reflector can be used normally with the usual radiation characteristic until too high a heating occurs due to the unconverted laser radiation and the coating changes its properties, that is to say it can no longer be used as a reflective surface.
  • the coating or layer becomes permeable at least for the laser light when the limit temperature is exceeded, in particular when the jet trap is arranged behind it.
  • a permeability can ultimately also be generated by omission, ie destruction, of the coating; in other words, this means that destruction of the reflector surface can take place in the impact area, which is particularly expedient if the beam trap is located behind it.
  • the coating may optionally also act as a jet trap after the limit temperature has been exceeded, but this is less preferred, in particular due to the cooling requirement that arises, even if heat-dissipating materials or even cooling bodies of cooling fluid are applied to the corresponding coating. directions themselves can be coupled. If the coating is fundamentally reflective, then the normal optical properties of the reflector can be further realized for normal operation, so that no corrective measures are required. Only in the event of an error occurs the laser light as much as possible absorbing effect.
  • the general advantage of beam traps is that the laser light is absorbed as much as possible, thus any light effects can be avoided in an error case and thus a defect is easy to recognize, on the other hand disturbing light effects, such as unwanted light distribution, even at lower light intensities largely can be avoided.
  • the reflector may be shaped to correct aberrations resulting from the protection means.
  • the protective means so aberrations can occur in the reflector, which can be taken into account in the design of the reflector in order nevertheless to obtain as precisely as possible the desired light distribution of the illumination device.
  • conventional optical simulation and planning programs can be used.
  • a measuring device in particular a photodetector, is arranged, wherein the operation of the laser light source controlling control device for evaluating the measurement data of the measuring device and for deactivating the Laser light source is formed upon detection of a threshold value exceeding a particular amount of laser light.
  • a measuring device in particular a photodetector, can be introduced in the impact area, preferably when using a beam trap.
  • Such a measuring device can measure the incoming absolute or relative radiation, thus providing measurement data that after a suitable evaluation of a statement about whether laser light is present in the impact area, so that can be inferred from a certain amount of laser light to an error case and a shutdown of the laser light source can be made.
  • the control device is designed to determine a spectrum and / or an intensity of the incident light on the measuring device.
  • Laser light that strikes the impact area and thus the measuring device directly, that is to say converted, has two consequences: on the one hand, the spectrum of the incident light changes, for example, if it is shifted more or even completely toward the wavelength emitted by the laser light source or even only from this is formed.
  • the invention also relates to a motor vehicle which comprises at least one illumination device of the type according to the invention.
  • the illumination device is preferably a headlight, in particular a headlight. All embodiments of the illumination device according to the invention can be analogously transferred to the motor vehicle according to the invention, so that here too the advantages of the invention can be obtained.
  • FIG. 1 shows a lighting device according to the invention in a first embodiment in error-free operation
  • FIG. 3 shows a lighting device according to the invention a second
  • FIG. 5 shows a lighting device according to the invention in a third embodiment with error-free operation
  • Fig. 7 shows a coating on a reflector
  • a laser light source 2 comprises at least one laser diode 3, in particular also a plurality of laser diodes 3, whose light can be brought together by a beam combiner not shown here.
  • the laser light is not irradiated directly to the reflector 5 in normal operation, but placed between the laser diode 3 and the reflector 5, in particular directly on an exit surface of the laser light source 2, a phosphor comprehensive radiation converter 6 is arranged, which converts the laser light into white secondary light and this fan-out, as indicated by the arrows 7.
  • the radiation converter 6 has a lambert radiation characteristic, so that the reflector 5 can be illuminated relatively uniformly.
  • the radiation converter 6 were omitted, the laser light from the laser light source 2 would impinge directly on the reflector 5, namely in a previously ascertainable, for example, calculable, impact area 8. This results in the present case from the divergence angle of the end of the of the optical fiber 4 emerging laser beam, which is determined by the numerical aperture of the optical fiber 4.
  • the reflector 5 is now obviously modified, in which a divergent element 9 is provided as protection means, which may be formed from the reflector 5 itself, for example by bulging the reflector, or may be applied to the reflector 5.
  • a partial omission of the radiation converter 6 is conceivable, in which case a part of the laser light impinges directly on the diverging element 9.
  • FIG. 2 shows a schematic diagram of the illumination device 1 without radiation converter 6, ie in the event of a fault
  • the diverging element 9 which is otherwise concave here, ensures a fanning out of the laser light by disturbing optical effects avoid.
  • the laser light impinges on the diverging element 9 as beam 10, where it is deflected in different directions due to the curved surface of the divergent element 9, that is fanned out, arrows 11.
  • the laser light thus emerges not with full intensity from the lighting device 1, where it could, for example, hit people or could produce disturbing light distributions, but is deflected in various directions and thus "distributed.” It should be noted at this point that the reflector 5 is configured is that aberrations resulting from the divergent element 9 are corrected in normal operation, thus the desired light distribution is obtained.
  • the diverging element 9 is also designed to be thermally stable, after it can come by the laser beam 10 to greater heat.
  • FIGS. 1 and 2 modified second embodiment of a lighting device 1 ' show a comparison with FIGS. 1 and 2 modified second embodiment of a lighting device 1 ', in which the main difference, the laser light source 2 identifies a light guide 4, the laser light of at least one laser diode 3 in the region of the reflector 5 leads , The radiation converter 6 is directly on the exit surface of the Optical fiber 4 is arranged. Through the light guide 4, an annular or elliptical distribution of the laser light is formed.
  • the laser light of this beam geometry impinges on the divergent element 9, which is modified with respect to FIGS. 1 and 2 as a function of this beam geometry, ie in its concrete form, in particular the radius of curvature Beam geometry is designed accordingly.
  • a spherical shape of fixed radius can be expedient as divergent element 9.
  • Fig. 5 shows a third embodiment of a lighting device 1 ", wherein the same parts are provided with the same reference numerals for simplicity.
  • Fig. 5 again shows the normal operation
  • Fig. 6 shows the error operation in case of loss or damage of the radiation converter 6.
  • the design of the protective means can also be used with other laser light sources 2, for example those of FIGS. 1 and 2.
  • the reflector 5 in the impact area 8 is broken, wherein behind the aperture arranged as an absorption body beam trap 12 is arranged, which in the present case forms part of an already provided for the illumination device heat sink 13.
  • the heat sink 13 is made of aluminum and is at least in the area of the jet trap 12 ribbed and blackened.
  • the beam trap 12, as shown schematically in FIG. 6, absorbs most of the directly incident laser light or even the entire laser light.
  • a measuring device 14 for incident light here a photodetector
  • the trade fair Device 14 receives measurement data relating to the incident light, which are evaluated by a control device 15 connected to the measuring device 14.
  • the control device 15 determines the presence of a defect, in particular the elimination or damage of the radiation converter 6, by checking whether at least a certain amount of laser light, thus unconverted light, arrives on the measuring device 14.
  • the spectrum of the incident light can be considered, after it is shifted towards the wavelength of the laser diode 3 used.
  • the intensity of the light can also be considered. Suitable threshold values are used, which, if they are exceeded or undershot, establish a defect in the sense of FIG. 6. If such a defect occurs, the control device 5 deactivates the laser light source 2.
  • such a measuring device 14 which supplies data to a control device 15, which are evaluated there, of course, in principle, also in the first embodiment of FIG. 1 and FIG. 2 or the second embodiment of FIG. 3 and FIG can be.
  • the reflector 5 is shaped in such a way that aberrations resulting from the aperture are corrected.
  • FIG. 7 shows, as a detail sketch, a further variant of a jet trap which can be provided directly on the reflector 5.
  • a coating 16 is provided in the impact area 8, which is basically reflective, but assumes the properties of a jet trap when a limit temperature is exceeded.
  • the reflector 5 still acts as designed reflective in normal operation, so that aberrations are avoided, however, occurs in case of failure, a jet trap effect.
  • the coating 16 as a layer can also cover an opening of the reflector 5 and, in the event of an overshoot, ten of the limit temperature are destroyed, the actual beam trap is arranged as in the embodiment of Fig. 5 and Fig. 6 behind the coating.
  • Fig. 8 shows a schematic diagram of a motor vehicle 17 according to the invention which has two lighting devices 1, 1 'and 1 "as front headlights, nevertheless it should be pointed out that other lighting devices of a motor vehicle according to the present invention can also be configured.

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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)

Abstract

L'invention concerne un système d'éclairage (1, 1'), destiné à un véhicule automobile (17), qui comprend une source de lumière laser (2), un convertisseur de rayonnement (6) contenant un matériau fluorescent, en particulier du phosphore, et un réflecteur (5). La lumière laser émise par la source de lumière laser (2) est convertie dans le convertisseur de rayonnement (6) en lumière secondaire ayant une plus grande largeur de bande que la lumière laser, en particulier en lumière blanche, et dispersée. La lumière secondaire est déviée par le réflecteur (5) dans une direction de rayonnement du système d'éclairage (1, 1'). Dans une zone d'incidence (8) du réflecteur (5) qui est exposée à la lumière laser lorsque le convertisseur de rayonnement (6) est absent, un moyen de protection permet de réduire l'intensité de la lumière laser rayonnée par le système d'éclairage (1, 1') lorsque le convertisseur de rayonnement (6) est absent ou endommagé.
PCT/EP2014/002668 2013-10-02 2014-10-01 Système d'éclairage pour véhicule automobile et véhicule automobile WO2015049048A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP14780762.2A EP3052853B1 (fr) 2013-10-02 2014-10-01 Système d'éclairage pour véhicule automobile et véhicule automobile

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013016423.0 2013-10-02
DE201310016423 DE102013016423A1 (de) 2013-10-02 2013-10-02 Beleuchtungseinrichtung für ein Kraftfahrzeug und Kraftfahrzeug

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Publication Number Publication Date
WO2015049048A1 true WO2015049048A1 (fr) 2015-04-09

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Cited By (6)

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EP3056801A1 (fr) * 2015-02-10 2016-08-17 Audi Ag Dispositif d'eclairage d'un module de phare d'un vehicule automobile et procede de fonctionnement d'un dispositif d'eclairage
CN106051576A (zh) * 2015-04-15 2016-10-26 株式会社小糸制作所 车辆用灯具
DE102016123907A1 (de) 2015-12-11 2017-06-14 Varroc Lighting Systems S.R.O. Eine Beleuchtungsvorrichtung, insbesondere eine Signallampe, für Kraftfahrzeuge
JP2017535926A (ja) * 2014-11-26 2017-11-30 ツェットカーヴェー グループ ゲーエムベーハー 自動車両用照明装置
DE102018101259A1 (de) 2017-01-24 2018-07-26 Varroc Lighting Systems S.R.O. Leuchtvorrichtung, insbesondere ein Projektorsystem eines Scheinwerfers für Kraftfahrzeuge
US11079086B2 (en) 2019-12-12 2021-08-03 Varroc Lighting Systems, s.r.o. Vehicle lighting device with a laser radiation source

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DE102016210363B4 (de) * 2016-06-10 2020-11-05 Audi Ag Beleuchtungseinrichtung für ein Kraftfahrzeug, Kraftfahrzeug mit Beleuchtungseinrichtung und Verfahren zum Betreiben einer Beleuchtungseinrichtung
DE102018208227A1 (de) * 2018-05-24 2019-11-28 Continental Automotive Gmbh Leuchtvorrichtung mit einer fotoelektrischen Sensorvorrichtung, Verfahren und Fahrzeug
DE102018124743A1 (de) 2018-10-08 2020-04-09 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung für ein Kraftfahrzeug und Kraftfahrzeug mit einer solchen Beleuchtungseinrichtung

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