EP2063170B1 - Illumination device for a vehicle - Google Patents

Illumination device for a vehicle Download PDF

Info

Publication number
EP2063170B1
EP2063170B1 EP08013643.5A EP08013643A EP2063170B1 EP 2063170 B1 EP2063170 B1 EP 2063170B1 EP 08013643 A EP08013643 A EP 08013643A EP 2063170 B1 EP2063170 B1 EP 2063170B1
Authority
EP
European Patent Office
Prior art keywords
light
surface element
light source
illumination device
laser
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.)
Active
Application number
EP08013643.5A
Other languages
German (de)
French (fr)
Other versions
EP2063170A3 (en
EP2063170A2 (en
Inventor
Anil Dr. Taner
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.)
Audi AG
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 EP15000962.9A priority Critical patent/EP2918898A1/en
Publication of EP2063170A2 publication Critical patent/EP2063170A2/en
Publication of EP2063170A3 publication Critical patent/EP2063170A3/en
Application granted granted Critical
Publication of EP2063170B1 publication Critical patent/EP2063170B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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

Definitions

  • the invention relates to a lighting device for a vehicle with at least one light source and at least one optical imaging element arranged in the beam path of the light source.
  • a motor vehicle with a lighting device with variable illumination volume is known.
  • This lighting device makes it possible for other road users to be recognized in the high beam area and for the areas of the high beam to be left out which would dazzle the recognized subscriber. This enables a glare-free or adaptive high beam to be generated.
  • a headlight 1 is known, which is shown in a simplified representation.
  • the headlight 1 has a lens 2, which is arranged to project the light emitted by a light-emitting diode array (LED array) 3 in front of the vehicle onto a roadway 5.
  • a projection image 4 of the activated LED array 3 onto the roadway 5 is generated by the lens 2.
  • the light-emitting diodes must have a relatively small edge length in order to be able to illuminate different sectors on the roadway 5. Light-emitting diodes with such an edge length offer little light output, so that the illumination for a high beam is insufficient.
  • LED modules are known which are intended to illuminate separate sectors in front of the vehicle. These LED modules require optics that focus the light very strongly. However, a large part of the Light-emitting diode does not use light energy because it cannot be bundled. In addition, these modules have to be adapted to each other very precisely, which is extremely difficult and time-consuming.
  • LCD Liquid Crystal Display
  • DMD Digital Mirror Device
  • a lighting device for a headlight of a motor vehicle which has an arrangement of point-shaped electroluminescent light sources, for example laser diodes.
  • a white light-emitting device is also generally known.
  • the device has a laser diode and a phosphor layer positioned to receive light from the laser diode.
  • the phosphor layer is adapted to absorb light from the laser diode and to emit light at longer wavelengths than that of the light from the laser diode.
  • a lighting unit for a vehicle is known.
  • This can comprise a laser light source and a lens arranged in the beam path of the laser light source.
  • a conversion surface is arranged between the laser light source and the lens, which converts light from the laser light source into a spectral range required for illumination.
  • the DE 10 2004 040 990 A1 describes a lighting system for a motor vehicle in which semiconductor lasers serve as light sources.
  • the laser radiation is coupled into an optical fiber and can thus be guided to any point in the vehicle.
  • Specially shaped optical elements are attached to the end of the optical waveguide in order to create a suitable one To obtain radiation characteristics.
  • laser beams of different colors are either mixed in the optical waveguide, or a phosphor layer is used for wavelength conversion.
  • a lighting system for illuminating a vehicle apron in which a laser is used.
  • the laser is scanned very quickly over the surface to be illuminated using two movable deflecting mirrors.
  • a conversion of the light wavelength over a suitable intermediate layer is not disclosed.
  • the light intensity can be modulated.
  • the JP 2003 295319 A describes a lighting device with a small size and high light output.
  • a fluorescent substance is arranged in a focal point of a parabolic mirror, which is irradiated by a laser. The light emitted by the fluorescent substance is bundled via the parabolic mirror and emitted into an environment.
  • the DE 103 44 173 A1 discloses a headlight for vehicles. Light is guided onto a micromirror of a light deflecting surface designed as a digital mirror device array, from where it is passed on to an environment or a street.
  • the DE 103 15 133 A1 discloses a lighting unit for vehicles with a plurality of semiconductor light sources arranged in a grid.
  • the semiconductor light sources are covered with a light-transparent chip cover as a housing, which is filled with a light-scattering and under light converting additional material.
  • a high light output is to be achieved with a lighting device designed with little effort.
  • a surface element is arranged between the light source and the imaging element and is designed at least to illuminate the focal plane of the imaging element.
  • the surface element is designed to illuminate the focal plane by light emission on the basis of excitations of the material of the surface element by the light emitted by the light source. This enables a high light output to be achieved by generating extensive illumination in the focal plane of the imaging optics.
  • the light emitted by the light source is deflected to the surface element via a reflector.
  • the light emitted by the light source is therefore not radiated directly and directly onto the surface element, but rather it is radiated onto the surface element quasi indirectly and indirectly.
  • the reflector is preferably a mirror that can be moved in at least two spatial directions. As a result, the deflection of the light beam emitted by the light source onto the desired locations of the surface element can be achieved in a low-effort yet functionally reliable manner. Due to the advantageous embodiment of the micromirror with a two-dimensionally rotatable bearing, a highly flexible part can be provided in this regard, with which the deflection of the light beam from the light source can be ensured quickly and at various positions of the surface element.
  • the surface of the roller is preferably shaped such that the length of the roller corresponds to at least the length or at least the width of the surface element. If the imaging element is divided into segments, the roller preferably consists of individual disks lying one on top of the other, all of which again have the shape of a roller result, the length of which corresponds at least to the length or at least the width of the surface element.
  • the number of disks preferably corresponds to the number of segments in a column or row of the surface element.
  • the one-dimensionally movable reflector In order to cover the next columns or rows, the one-dimensionally movable reflector must direct the light beam onto the next row of the roller or the next disc of the roller. This simplifies the two-dimensionally mounted reflector into a one-dimensional reflector and a rotating roller.
  • a reflector unit has a reflector that is movable in a spatial direction or a rotatably mounted roller that has a reflecting surface.
  • the light can be deflected by moving the reflector at a speed that cannot be resolved by the human eye, as a result of which a projected overall image is perceived.
  • the surface element is designed for wavelength conversion of the light emitted by the light source.
  • a light which appears white to the human eye is preferably emitted by the lighting device.
  • the surface element is thus materially composed such that the light emitted by the surface element appears white to the human eye.
  • the material composition of the surface element can be selected such that the light emitted by the light source is converted into a spectral range which, viewed on its own or emits a white light when the light beams are superimposed.
  • the surface element is designed in a functionality only to illuminate the focal plane of the imaging element. This is particularly the case if the light source is not designed for the emission of white light and a corresponding spectral shift is to be carried out by the surface element
  • Surface element preferably additionally formed with the functionality of the wavelength conversion.
  • the light source is a laser, in particular a laser diode. Basically, therefore, only a laser is sufficient as the light source for the lighting device. However, it can be provided that several lasers are also arranged.
  • a laser light source enables relatively low energy consumption, so that the lighting device can also be operated in an energy-efficient manner in this regard. In addition, a compact and component-reduced configuration of the lighting device can be ensured.
  • a laser as a light source enables a very finely divided light distribution in the focal plane of the lens. Due to the reasons explained at the beginning, LED arrays cannot produce such a fine light distribution without losing their light intensity. Lasers also have a smaller exit area than the area of a bright LED, which is not designed as a laser diode.
  • the surface element is preferably essentially flat. With this configuration, the illumination of the focal plane can be ensured in a particularly effective and uniformly homogeneous manner at the desired locations.
  • the surface element is arranged in the focal plane of the imaging element. Precisely because of this, the requirement for optimal illumination of the focal plane is met in a particularly advantageous manner.
  • the surface element is preferably formed from a material having a phosphor composition.
  • a suitable phosphor composition can be used, adapted to the wavelength of the light emitted by the light source. This is particularly so in view of the fact that the light emitted by the surface element appears white to the human eye.
  • the phosphor layer is preferably excited using a laser. The wavelength is flexible when converting the laser radiation into white light in the phosphor layer.
  • a one-dimensionally rotatable roller with a reflecting surface can be provided in this regard.
  • the surface of the roller is preferably shaped such that a column or a row of the surface element can be completely covered or illuminated by turning the roller.
  • the reflector is a roller with a reflecting surface that can be displaced in an axis of symmetry.
  • the movable reflector is completely eliminated, since the light source shines directly on the roller and the roller illuminates a row or column of the surface element.
  • the roller In order to illuminate further rows or columns of the surface element, the roller must be shifted in the direction of its axis of rotation.
  • the surface of the roller is preferably shaped in such a way that a (virtual) disc of the roller directs the light beam from the light source onto a different row or column of the surface element than the other (virtual) discs of the roller.
  • a reflection unit is created from a roller rotating about the axis of rotation, which is displaceable in the direction of the axis of rotation.
  • the rotation of the roller covers one row or column of the imaging element, while the displacement in the direction of the axis of rotation reaches the various columns or rows of the surface element.
  • the surface element is preferably made of a non-self-illuminating material. A light emission of the surface element therefore only takes place if the light of the light source has stimulated the material of the surface element to emit light. This can prevent unwanted light emissions or falsification of the light color.
  • the surface element has several surface segments that are delimited from one another in a defined manner.
  • This configuration enables a fine distribution of the light distribution on the projection surface, in particular the roadway, with many sectors or segments. This is particularly advantageous if different light functions are to be displayed or if a light function is to be individually adapted to different environmental conditions. This is particularly advantageous in the glare-free setting of a high beam of a headlight of a vehicle. In such a configuration, the dazzling of other road users with the high beam function set can thus be avoided, since automatically controlled individual surface segments are not illuminated and are therefore not excited to emit light.
  • the surface segments of the surface element have the same design and are arranged in rows and columns.
  • the surface element thus has a matrix-like configuration with surface segments.
  • the lighting device is designed as a headlight for the front illumination of a vehicle and for generating a high beam.
  • the low beam function can also be generated with the lighting device and the one light source, the laser. It can also be provided that the low-beam function of the lighting device can be implemented by another separate light source when it is designed as a headlight. In this context, a diode that is not designed as a laser or an LED array could also be provided.
  • the LED array known in the prior art for example the LED array in FIG Fig. 1
  • the surface element formed by excitation for light emission The additional reflector allows the light, which is preferably emitted by a laser, to be deflected depending on the situation in such a way that the laser beam scans the currently required light distribution on the surface element. This happens so quickly that the scanning of the light distribution is not visible to the human eye.
  • the surface element also serves to generate white light from colored light of the light source that is therefore in the visible spectral range or also in the invisible spectral range. This is then projected onto the roadway via the imaging optics, in particular at least one lens.
  • the imaging optics in particular at least one lens.
  • FIG. 2 is a schematic representation of a lighting device as a headlight 1 'for a motor vehicle.
  • a headlight 1 ' for a motor vehicle.
  • the components of the headlight 1 ' which are sufficient for understanding the invention are shown. This can also have a plurality of other components.
  • the headlight 1 ' is thus designed to illuminate the apron of the vehicle and, in the exemplary embodiment, is designed in particular with the procedure explained below and the components explained below for realizing the light function of the high beam.
  • a glare-free high beam is to be realized which, depending on other road users, automatically cuts out different areas of the high beam which would blind the recognized subscriber. This provides a glare-free or adaptive high beam.
  • the headlight 1 has at least one lens 2 as an optical imaging element.
  • This lens 2 is positioned in the beam path of the light source designed as a laser 6.
  • a flat surface element 8 is arranged in the focal plane of the lens 2, which has a multiplicity of surface segments 11 which are essentially the same in terms of shape and dimensions.
  • the light from parallel bundles, that do not run parallel to the optical axis of the lens 2 is collected in a plane behind the lens 2 that is exactly as far away from the lens 2 as the focal point. This level is called the focal level.
  • the surface element 8 is arranged between the lens 2 and the laser 6 and is designed to illuminate the focal plane of the lens 2.
  • the surface element 8 is formed for illuminating the focal plane by light emission due to excitation of the material of the surface element 8 by the light emitted by the light source, the laser 6.
  • the surface element 8 is designed for wavelength conversion of the light emitted by the laser 6.
  • the light 9 emitted by the laser 6 can be deflected and directed as a reflected beam 10 onto the surface element 8. Due to the flexible mobility of the reflector 7, specific sectors or segments 11 of the surface element 8 can thus be irradiated and excited to emit light.
  • the material of the surface element 8 is adapted to the spectral range of the light 9 emitted by the laser 6 in such a way that the light is converted in such a way that the light emitted by the surface element 8 appears white to the human eye.
  • the material of the surface element 8 is preferably a phosphor composition.
  • the lens 2 Through the lens 2, the light emitted by the surface element 8 and appearing white to the human eye is projected onto the roadway 5, an image area 4 ′ with the grids of the projected segments 12 being shown in this regard.
  • the surface element 8 thus serves on the one hand as a focusing screen with regard to the alignment of the focal plane and on the other hand for the radiation conversion of the laser light, which can be in the red, green, blue or spectral range invisible to the human eye.
  • the radiating surface can be limited, which the sectors or segments 12 of the glare-free high beam result after the projection onto the roadway 5.
  • the redirection of the light beam 9 or 10 with the reflector 7 and thus the movement and scanning on the surface element 8 or the segments 11 takes place so quickly that it is imperceptible to the human eye in the image area 4 'of the projection.
  • the sectors or segments 12 projected onto the roadway 5 depending on the situation therefore appear as permanently homogeneously illuminated areas.
  • the headlight 1 'as shown in Fig. 2 thus does not have an LED array for the high beam functionality explained as shown in FIG Fig. 1 more on.
  • This LED array 3 is replaced by the surface element 8.
  • the surface element 8 is also formed from a material which is itself non-luminous. This means that without excitation of the material of the surface element 8 by the light from the light source, there is no light emission.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

Die Erfindung betrifft eine Beleuchtungsvorrichtung für ein Fahrzeug mit zumindest einer Lichtquelle und zumindest einem im Strahlengang der Lichtquelle angeordneten optischen Abbildungselement.The invention relates to a lighting device for a vehicle with at least one light source and at least one optical imaging element arranged in the beam path of the light source.

Aus der DE 10 2005 014 953 A1 ist ein Kraftfahrzeug mit einer Beleuchtungseinrichtung mit veränderbarem Ausleuchtvolumen bekannt. Durch diese Beleuchtungseinrichtung wird ermöglicht, dass andere Verkehrsteilnehmer im Fernlichtbereich erkannt und die Bereiche des Fernlichts ausgespart werden, die den erkannten Teilnehmer blenden würden. Dadurch kann ein blendfreies oder adaptives Fernlicht generiert werden.From the DE 10 2005 014 953 A1 a motor vehicle with a lighting device with variable illumination volume is known. This lighting device makes it possible for other road users to be recognized in the high beam area and for the areas of the high beam to be left out which would dazzle the recognized subscriber. This enables a glare-free or adaptive high beam to be generated.

Darüber hinaus ist gemäß der Darstellung in Fig. 1 ein Scheinwerfer 1 bekannt, welcher in vereinfachter Darstellung gezeigt ist. Der Scheinwerfer 1 weist eine Linse 2 auf, welche zur Projektion des von einem Leuchtdioden-Array (LED-Array) 3 emittierten Lichts im Vorfeld des Fahrzeugs auf eine Fahrbahn 5 angeordnet ist. Durch die Linse 2 wird ein Projektionsbild 4 des aktivierten LED-Arrays 3 auf die Fahrbahn 5 erzeugt.In addition, as shown in Fig. 1 a headlight 1 is known, which is shown in a simplified representation. The headlight 1 has a lens 2, which is arranged to project the light emitted by a light-emitting diode array (LED array) 3 in front of the vehicle onto a roadway 5. A projection image 4 of the activated LED array 3 onto the roadway 5 is generated by the lens 2.

Derartige LED-Arrays 3, die sich hinter der Linse 2 befinden und deren Anordnung von der Linse 2 auf die Straße projiziert wird, haben einerseits den Vorteil, dass die einzelnen Leuchtdioden nicht aneinander angepasst werden müssen. Die Leuchtdioden müssen jedoch eine relativ kleine Kantenlänge aufweisen, um verschiedene Sektoren auf der Fahrbahn 5 ausleuchten zu können. Leuchtdioden mit einer derartigen Kantenlänge bieten wenig Lichtleistung, so dass die Ausleuchtung für ein Fernlicht nur unzureichend ist.Such LED arrays 3, which are located behind the lens 2 and whose arrangement is projected from the lens 2 onto the street, have the advantage on the one hand that the individual light-emitting diodes do not have to be adapted to one another. However, the light-emitting diodes must have a relatively small edge length in order to be able to illuminate different sectors on the roadway 5. Light-emitting diodes with such an edge length offer little light output, so that the illumination for a high beam is insufficient.

Darüber hinaus sind LED-Module bekannt, die separate Sektoren vor dem Fahrzeug beleuchten sollen. Diese LED-Module benötigen eine Optik, die das Licht sehr stark bündelt. Dabei wird jedoch ein großer Teil der von der Leuchtdiode erzeugten Lichtenergie nicht genutzt, weil sie nicht gebündelt werden kann. Darüber hinaus müssen diese Module sehr genau aneinander angepasst werden, was äußert schwierig und aufwendig ist.In addition, LED modules are known which are intended to illuminate separate sectors in front of the vehicle. These LED modules require optics that focus the light very strongly. However, a large part of the Light-emitting diode does not use light energy because it cannot be bundled. In addition, these modules have to be adapted to each other very precisely, which is extremely difficult and time-consuming.

Ferner sind Leuchtdioden mit Reflexionsoptiken bekannt, welche das Licht ohne nennenswerte Reduzierung der Lichtleistung reduzieren können, welche dabei jedoch Abstrahlwinkel erzeugen, die zu grob sind, um einzelne Sektoren auf der Fahrbahn darstellen zu können. Auch hier ist eine aufwendige Justage der Optik erforderlich, was einerseits auch kostenintensiv und nur bis zu einem begrenzten Genauigkeitsgrad möglich ist.Furthermore, light-emitting diodes with reflection optics are known which can reduce the light without any appreciable reduction in the light output, but which in the process produce radiation angles which are too coarse to be able to represent individual sectors on the road. Here, too, a complex adjustment of the optics is required, which on the one hand is also cost-intensive and only possible to a limited degree of accuracy.

Des Weiteren ist der Einsatz von LCD (Liquid Crystal Display) - und DMD (Digital Mirror Device)-Arrays bekannt, welche einen geringen Wirkungsgrad aufweisen und dadurch Lichtleistungen erzeugen, die für die Generierung eines Fernlichts eines Scheinwerfers für ein Fahrzeug nur unzureichend sind.Furthermore, the use of LCD (Liquid Crystal Display) and DMD (Digital Mirror Device) arrays is known, which have a low degree of efficiency and thereby generate light outputs which are insufficient for the generation of a high beam headlight for a vehicle.

Aus der DE 101 33 869 A1 ist eine Leuchtvorrichtung für einen Scheinwerfer eines Kraftfahrzeugs bekannt, welcher eine Anordnung von punktförmigen elektrolumineszenten Lichtquellen, beispielsweise Laserdioden, aufweist.From the DE 101 33 869 A1 a lighting device for a headlight of a motor vehicle is known which has an arrangement of point-shaped electroluminescent light sources, for example laser diodes.

Aus der DE 10 2004 016 232 A1 ist ferner ganz allgemein eine weißes Licht emittierende Vorrichtung bekannt. Die Vorrichtung weist eine Laserdiode und eine Phosphorschicht auf, die so positioniert ist, um Licht von der Laserdiode zu empfangen. Die Phosphorschicht ist dahingehend angepasst, um Licht von der Laserdiode zu absorbieren und um Licht bei längeren Wellenlängen als die des Lichts der Laserdiode zu emittieren.From the DE 10 2004 016 232 A1 a white light-emitting device is also generally known. The device has a laser diode and a phosphor layer positioned to receive light from the laser diode. The phosphor layer is adapted to absorb light from the laser diode and to emit light at longer wavelengths than that of the light from the laser diode.

Aus der DE 101 61 177 A1 ist eine Leuchteinheit für ein Fahrzeug bekannt. Diese kann eine Laserlichtquelle und eine im Strahlengang der Laserlichtquelle angeordnete Linse umfassen. Zwischen der Laserlichtquelle und der Linse ist eine Umwandlungsfläche angeordnet, welche Licht der Laserlichtquelle in einen zur Ausleuchtung erforderlichen Spektralbereich umwandelt.From the DE 101 61 177 A1 a lighting unit for a vehicle is known. This can comprise a laser light source and a lens arranged in the beam path of the laser light source. A conversion surface is arranged between the laser light source and the lens, which converts light from the laser light source into a spectral range required for illumination.

Die DE 10 2004 040 990 A1 beschreibt ein Beleuchtungssystem für ein Kraftfahrzeug, in dem Halbleiterlaser als Lichtquellen dienen. Die Laserstrahlung wird in einen Lichtwellenleiter eingekoppelt und kann so an eine beliebige Stelle des Fahrzeugs geführt werden. Am Ende des Lichtwellenleiters werden speziell geformte optische Elemente angebracht, um eine geeignete Abstrahlcharakteristik zu erhalten. Um Weißlicht zu erhalten, werden entweder verschiedenfarbige Laserstrahlen im Lichtwellenleiter gemischt, oder es wird eine Phosphorschicht zur Wellenlängenkonversion eingesetzt.The DE 10 2004 040 990 A1 describes a lighting system for a motor vehicle in which semiconductor lasers serve as light sources. The laser radiation is coupled into an optical fiber and can thus be guided to any point in the vehicle. Specially shaped optical elements are attached to the end of the optical waveguide in order to create a suitable one To obtain radiation characteristics. In order to obtain white light, laser beams of different colors are either mixed in the optical waveguide, or a phosphor layer is used for wavelength conversion.

Aus der EP 0 291 475 A2 ist ebenfalls ein Beleuchtungssystem zur Beleuchtung eines Fahrzeugvorfeldes bekannt, in dem ein Laser verwendet wird. Der Laser wird über zwei bewegbare Ablenkspiegel sehr schnell über die zu beleuchtende Fläche gerastert. Eine Konversion der Lichtwellenlänge über eine geeignete Zwischenschicht ist nicht offenbart. Allerdings kann die Lichtintensität moduliert werden.From the EP 0 291 475 A2 a lighting system for illuminating a vehicle apron is also known, in which a laser is used. The laser is scanned very quickly over the surface to be illuminated using two movable deflecting mirrors. A conversion of the light wavelength over a suitable intermediate layer is not disclosed. However, the light intensity can be modulated.

Die JP 2003 295319 A beschreibt eine Beleuchtungseinrichtung mit einer geringen Baugröße und großer Lichtleistung. Dabei ist eine fluoreszierende Substanz in einem Brennpunkt eines Parabolspiegels angeordnet, welches von einem Laser bestrahlt wird. Über den Parabolspiegel wird das von der fluoreszierenden Substanz emittierte Licht gebündelt und in eine Umgebung abgestrahlt.The JP 2003 295319 A describes a lighting device with a small size and high light output. A fluorescent substance is arranged in a focal point of a parabolic mirror, which is irradiated by a laser. The light emitted by the fluorescent substance is bundled via the parabolic mirror and emitted into an environment.

Die DE 103 44 173 A1 offenbart einen Scheinwerfer für Fahrzeuge. Dabei wird Licht auf Mikrospiegel einer als Digital Mirror Device Array ausgeführten Lichtumlenkfläche geführt, von wo es in eine Umgebung bzw. Straße weitergeleitet wird.The DE 103 44 173 A1 discloses a headlight for vehicles. Light is guided onto a micromirror of a light deflecting surface designed as a digital mirror device array, from where it is passed on to an environment or a street.

Die DE 103 15 133 A1 offenbart eine Beleuchtungseinheit für Fahrzeuge mit einer Mehrzahl von in einem Gitter verteilt angeordneten Halbleiterlichtquellen. Die Halbleiterlichtquellen sind dabei mit einer lichttransparenten Chipabdeckung als Gehäuse abgedeckt, welche mit einem lichtstreuenden und unter Licht konvertierenden Zusatzmaterial gefüllt ist.The DE 103 15 133 A1 discloses a lighting unit for vehicles with a plurality of semiconductor light sources arranged in a grid. The semiconductor light sources are covered with a light-transparent chip cover as a housing, which is filled with a light-scattering and under light converting additional material.

Es ist Aufgabe der vorliegenden Erfindung, eine Beleuchtungsvorrichtung für eine Fahrzeug zu schaffen, mit welcher die Aufteilung der Lichtverteilung zur Projektion auf die Fahrbahn verfeinert werden kann. Insbesondere soll eine hohe Lichtleistung mit einer aufwandsarm ausgestalteten Beleuchtungsvorrichtung erzielt werden.It is an object of the present invention to provide a lighting device for a vehicle with which the distribution of light distribution for projection onto the roadway can be refined. In particular, a high light output is to be achieved with a lighting device designed with little effort.

Diese Aufgabe wird durch eine Beleuchtungsvorrichtung, welche die Merkmale nach Anspruch 1 aufweist, gelöst.This object is achieved by a lighting device which has the features of claim 1.

Eine erfindungsgemäße Beleuchtungsvorrichtung für ein Fahrzeug umfasst zumindest eine Lichtquelle und zumindest ein im Strahlengang der Lichtquelle angeordnetes optisches Abbildungselement. Zwischen der Lichtquelle und Abbildungselement ist ein Flächenelement angeordnet, welches zumindest zur Ausleuchtung der Brennebene des Abbildungselements ausgebildet ist. Durch eine derartige Ausgestaltung kann eine sehr feine Aufteilung der Lichtverteilung der Beleuchtungsvorrichtung erzeugt werden. Es kann eine hohe Lichtleistung gewährleistet werden. Darüber hinaus ist ein relativ geringer Justageaufwand für die Komponenten der Beleuchtungsvorrichtung erforderlich.A lighting device according to the invention for a vehicle comprises at least one light source and at least one optical imaging element arranged in the beam path of the light source. A surface element is arranged between the light source and the imaging element and is designed at least to illuminate the focal plane of the imaging element. Such a configuration enables a very fine distribution of the light distribution of the lighting device to be generated. A high light output can be guaranteed. In addition, a relatively small adjustment effort is required for the components of the lighting device.

Erfindungsgemäß ist das Flächenelement zur Ausleuchtung der Brennebene durch Lichtemission aufgrund von Anregungen des Materials des Flächenelements durch das von der Lichtquelle emittierte Licht ausgebildet. Dadurch kann eine hohe Lichtleistung durch Erzeugung einer umfänglichen Ausleuchtung in der Brennebene der Abbildungsoptik erzielt werden.According to the invention, the surface element is designed to illuminate the focal plane by light emission on the basis of excitations of the material of the surface element by the light emitted by the light source. This enables a high light output to be achieved by generating extensive illumination in the focal plane of the imaging optics.

Dabei ist das von der Lichtquelle emittierte Licht über einen Reflektor zum Flächenelement umgelenkt. Das von der Lichtquelle emittierte Licht wird somit nicht direkt und unmittelbar auf das Flächenelement abgestrahlt, sondern es wird ein quasi indirekt und mittelbar auf das Flächenelement eingestrahlt. Der Reflektor ist vorzugsweise ein in zumindest zwei Raumrichtungen bewegbarer Spiegel. Dadurch kann in aufwandsarmer und dennoch funktionszuverlässiger Weise die Ablenkung des von der Lichtquelle emittierten Lichtstrahls auf die gewünschten Stellen des Flächenelements erreicht werden. Durch die vorteilhafte Ausgestaltung des Mikrospiegels mit einer zweidimensional drehbaren Lagerung kann diesbezüglich ein hochflexibles Teil bereitgestellt werden, mit dem die Umlenkung des Lichtstrahls der Lichtquelle schnell und an verschiedenste Positionen des Flächenelements gewährleistet werden kann. Dadurch können bedarfsabhängig sehr schnell auch unterschiedlichste Figuren erzeugt und projiziert werden. Gerade beim Einsatz der Beleuchtungsvorrichtung in bewegten Objekten kann dadurch das Blenden von anderen Objekten, insbesondere Verkehrsteilnehmer, verhindert werden, da schnell spezifische Bereiche des Flächenelements angestrahlt oder nicht angestrahlt werden können. Vorzugsweise ist die Oberfläche der Walze so geformt, dass die Länge der Walze mindestens der Länge oder mindestens der Breite des Flächenelements entspricht. Ist das Abbildungselement in Segmente unterteilt, besteht die Walze vorzugsweise aus einzelnen aufeinanderliegenden Scheiben, die gesamtheitlich wieder die Form einer Walze ergeben, deren Länge mindestens der Länge oder mindestens der Breite des Flächenelements entspricht. Die Anzahl der Scheiben, deren Oberfläche vorzugsweise eine Spalte oder Zeile des Flächenelements während einer Drehung beleuchten können, entspricht vorzugsweise der Anzahl der Segmente in einer Spalte oder Zeile des Flächenelements. In allen Ausprägungen ist es möglich, den Lichtstrahl der Lichtquelle während einer Drehung der Walze auf eine Zeile oder Spalte des Flächenelements zu reflektieren. Um die nächsten Spalten oder Zeilen abzudecken, muss der eindimensional bewegliche Reflektor den Lichtstrahl auf die nächste Zeile der Walze oder die nächste Scheibe der Walze lenken. Dadurch vereinfacht sich der zweidimensional gelagerte Reflektor zu einem eindimensionalen Reflektor und einer rotierenden Walze.The light emitted by the light source is deflected to the surface element via a reflector. The light emitted by the light source is therefore not radiated directly and directly onto the surface element, but rather it is radiated onto the surface element quasi indirectly and indirectly. The reflector is preferably a mirror that can be moved in at least two spatial directions. As a result, the deflection of the light beam emitted by the light source onto the desired locations of the surface element can be achieved in a low-effort yet functionally reliable manner. Due to the advantageous embodiment of the micromirror with a two-dimensionally rotatable bearing, a highly flexible part can be provided in this regard, with which the deflection of the light beam from the light source can be ensured quickly and at various positions of the surface element. As a result, very different figures can be generated and projected very quickly, depending on requirements. Especially when the lighting device is used in moving objects, this can prevent the dazzling of other objects, in particular road users, since specific areas of the surface element can be illuminated or not illuminated quickly. The surface of the roller is preferably shaped such that the length of the roller corresponds to at least the length or at least the width of the surface element. If the imaging element is divided into segments, the roller preferably consists of individual disks lying one on top of the other, all of which again have the shape of a roller result, the length of which corresponds at least to the length or at least the width of the surface element. The number of disks, the surface of which can preferably illuminate a column or row of the surface element during a rotation, preferably corresponds to the number of segments in a column or row of the surface element. In all forms, it is possible to reflect the light beam from the light source onto a row or column of the surface element during a rotation of the roller. In order to cover the next columns or rows, the one-dimensionally movable reflector must direct the light beam onto the next row of the roller or the next disc of the roller. This simplifies the two-dimensionally mounted reflector into a one-dimensional reflector and a rotating roller.

Es kann auch vorgesehen sein, dass eine Reflektoreinheit einen in einer Raumrichtung beweglichen Reflektor oder eine drehbar gelagerte Walze aufweist, welche eine reflektierende Oberfläche aufweist.It can also be provided that a reflector unit has a reflector that is movable in a spatial direction or a rotatably mounted roller that has a reflecting surface.

Insbesondere ist durch das Bewegen des Reflektors das Licht in einer durch das menschliche Auge nicht auflösbaren Geschwindigkeit umlenkbar, wodurch ein projiziertes Gesamtbild wahrgenommen wird.In particular, the light can be deflected by moving the reflector at a speed that cannot be resolved by the human eye, as a result of which a projected overall image is perceived.

Ferner ist das Flächenelement zur Wellenlängenkonversion des von der Lichtquelle emittierten Lichts ausgebildet. Vorzugsweise wird durch die Beleuchtungsvorrichtung ein für das menschliche Auge weiß erscheinendes Licht emittiert. Insbesondere ist somit das Flächenelement materiell so zusammengesetzt, dass das vom Flächenelement emittierte Licht für das menschliche Auge weiß erscheint. Diesbezüglich kann die Materialzusammensetzung des Flächenelements so gewählt sein, dass das von der Lichtquelle emittierte Licht in einen Spektralbereich konvertiert wird, welcher für sich betrachtet oder in Überlagerung der Lichtstrahlen ein weißes Licht emittiert.Furthermore, the surface element is designed for wavelength conversion of the light emitted by the light source. A light which appears white to the human eye is preferably emitted by the lighting device. In particular, the surface element is thus materially composed such that the light emitted by the surface element appears white to the human eye. In this regard, the material composition of the surface element can be selected such that the light emitted by the light source is converted into a spectral range which, viewed on its own or emits a white light when the light beams are superimposed.

Ist in diesem Zusammenhang die Lichtquelle bereits zur Emission von weißem Licht ausgebildet, so ist es ausreichend, dass das Flächenelement in einer Funktionalität lediglich zur Ausleuchtung der Brennebene des Abbildungselements ausgebildet ist. Insbesondere dann, wenn die Lichtquelle nicht zur Emission von weißem Licht konzipiert ist und durch das Flächenelement eine entsprechende Spektralverschiebung vorzunehmen ist, ist das Flächenelement vorzugsweise zusätzlich mit der Funktionalität der Wellenlängenkonversion ausgebildet.In this context, if the light source is already designed to emit white light, it is sufficient that the surface element is designed in a functionality only to illuminate the focal plane of the imaging element. This is particularly the case if the light source is not designed for the emission of white light and a corresponding spectral shift is to be carried out by the surface element Surface element preferably additionally formed with the functionality of the wavelength conversion.

Die Lichtquelle ist ein Laser, insbesondere eine Laserdiode. Grundsätzlich reicht somit für die Beleuchtungsvorrichtung lediglich ein Laser als Lichtquelle aus. Es kann jedoch vorgesehen sein, dass auch mehrere Laser angeordnet sind. Eine Laserlichtquelle ermöglicht einen relativ geringen Energieverbrauch, so dass auch diesbezüglich ein energieeffizientes Betreiben der Beleuchtungsvorrichtung möglich ist. Darüber hinaus kann dadurch eine kompakte und bauteilreduzierte Ausgestaltung der Beleuchtungsvorrichtung gewährleistet werden. Ein Laser als Lichtquelle ermöglicht eine sehr fein aufgegliederte Lichtverteilung in der Brennebene der Linse. LED-Arrays können aufgrund der anfangs erläuterten Gründe eine derartig feine Lichtverteilung nicht erzeugen, ohne dabei an Lichtintensität zu verlieren. Laser haben darüber hinaus eine geringere Austrittsfläche als die Fläche einer lichtstarken LED, welche nicht als Laserdiode ausgebildet ist.The light source is a laser, in particular a laser diode. Basically, therefore, only a laser is sufficient as the light source for the lighting device. However, it can be provided that several lasers are also arranged. A laser light source enables relatively low energy consumption, so that the lighting device can also be operated in an energy-efficient manner in this regard. In addition, a compact and component-reduced configuration of the lighting device can be ensured. A laser as a light source enables a very finely divided light distribution in the focal plane of the lens. Due to the reasons explained at the beginning, LED arrays cannot produce such a fine light distribution without losing their light intensity. Lasers also have a smaller exit area than the area of a bright LED, which is not designed as a laser diode.

Vorzugsweise ist das Flächenelement im Wesentlichen eben ausgebildet. Durch diese Ausgestaltung kann die Ausleuchtung der Brennebene besonders effektiv und gleichmäßig homogen an den jeweils gewünschten Stellen gewährleistet werden.The surface element is preferably essentially flat. With this configuration, the illumination of the focal plane can be ensured in a particularly effective and uniformly homogeneous manner at the desired locations.

Besonders bevorzugt erweist es sich, wenn das Flächenelement in der Brennebene des Abbildungselements angeordnet ist. Gerade dadurch ist die Anforderung an die optimale Ausleuchtung der Brennebene besonders vorteilhaft erfüllt.It proves particularly preferred if the surface element is arranged in the focal plane of the imaging element. Precisely because of this, the requirement for optimal illumination of the focal plane is met in a particularly advantageous manner.

Vorzugsweise ist das Flächenelement aus einem eine Phosphorzusammensetzung aufweisenden Material ausgebildet. Diesbezüglich kann angepasst an die Wellenlänge des von der Lichtquelle emittierten Lichts eine geeignete Phosphorzusammensetzung verwendet werden. Dies insbesondere im Hinblick darauf, dass das von dem Flächenelement emittierte Licht für das menschliche Auge weiß erscheint. Die Anregung der Phosphorschicht erfolgt vorzugsweise mit einem Laser. Bei der Umwandlung der Laserstrahlung in weißes Licht in der Phosphorschicht ist die Wellenlänge flexibel.The surface element is preferably formed from a material having a phosphor composition. In this regard, a suitable phosphor composition can be used, adapted to the wavelength of the light emitted by the light source. This is particularly so in view of the fact that the light emitted by the surface element appears white to the human eye. The phosphor layer is preferably excited using a laser. The wavelength is flexible when converting the laser radiation into white light in the phosphor layer.

Insbesondere kann diesbezüglich eine eindimensional drehbar gelagerte Walze mit spiegelnder Oberfläche vorgesehen sein. Vorzugsweise ist die Oberfläche der Walze so geformt, dass eine Spalte oder eine Zeile des Flächenelements mit einer Drehung der Walze komplett abgedeckt bzw. angestrahlt werden kann.In particular, a one-dimensionally rotatable roller with a reflecting surface can be provided in this regard. The surface of the roller is preferably shaped such that a column or a row of the surface element can be completely covered or illuminated by turning the roller.

Es kann auch vorgesehen sein, dass der Reflektor eine in einer Symmetrieachse verschiebbare Walze mit spiegelnder Oberfläche ist. Hier entfällt der bewegliche Reflektor vollständig, da die Lichtquelle direkt auf die Walze strahlt und die Walze eine Zeile oder Spalte des Flächenelements beleuchtet. Um weitere Zeilen oder Spalten des Flächenelements zu beleuchten, muss die Walze in Richtung ihrer Rotationsachse verschoben werden. Vorzugsweise ist die Oberfläche der Walze so geformt, dass eine (virtuelle) Scheibe der Walze den Lichtstrahl der Lichtquelle auf eine andere Zeile oder Spalte des Flächenelements lenkt als die anderen (virtuellen) Scheiben der Walze. Auf diese Weise entsteht eine Reflexionseinheit aus einer um die Rotationsachse drehende Walze, die in Richtung der Rotationsachse verschiebbar ist. Die Drehung der Walze deckt dabei bei feststehender Lichtquelle eine Zeile oder Spalte des Abbildungselements ab, während die Verschiebung in Richtung der Rotationsachse die verschiedenen Spalten oder Zeilen des Flächenelements erreicht.It can also be provided that the reflector is a roller with a reflecting surface that can be displaced in an axis of symmetry. Here, the movable reflector is completely eliminated, since the light source shines directly on the roller and the roller illuminates a row or column of the surface element. In order to illuminate further rows or columns of the surface element, the roller must be shifted in the direction of its axis of rotation. The surface of the roller is preferably shaped in such a way that a (virtual) disc of the roller directs the light beam from the light source onto a different row or column of the surface element than the other (virtual) discs of the roller. In this way, a reflection unit is created from a roller rotating about the axis of rotation, which is displaceable in the direction of the axis of rotation. With a fixed light source, the rotation of the roller covers one row or column of the imaging element, while the displacement in the direction of the axis of rotation reaches the various columns or rows of the surface element.

Vorzugsweise ist das Flächenelement aus einem nicht selbstleuchtenden Material ausgebildet. Eine Lichtemission des Flächenelements erfolgt somit nur dann, wenn durch das Licht der Lichtquelle eine Anregung des Materials des Flächenelements zur Lichtemission erfolgt ist. Unerwünschte Lichtemissionen oder Verfälschungen der Lichtfarbe können dadurch verhindert werden.The surface element is preferably made of a non-self-illuminating material. A light emission of the surface element therefore only takes place if the light of the light source has stimulated the material of the surface element to emit light. This can prevent unwanted light emissions or falsification of the light color.

Das Flächenelement weist mehrere definiert voneinander abgegrenzte Flächensegmente auf. Durch diese Ausgestaltung kann eine feine Aufteilung der Lichtverteilung auf der Projektionsfläche, insbesondere der Fahrbahn, mit vielen Sektoren bzw. Segmenten ermöglicht werden. Dies ist insbesondere dann sehr vorteilhaft, wenn verschiedene Lichtfunktonen dargestellt werden sollen oder eine Lichtfunktion individuell an unterschiedliche Umgebungsbedingungen angepasst werden soll. Insbesondere ist dies bei der blendfreien Einstellung eines Fernlichts eines Scheinwerfers eines Fahrzeugs besonders vorteilhaft. Gerade bei einer derartigen Ausgestaltung kann somit das Blenden von anderen Verkehrsteilnehmern bei eingestellter Fernlichtfunktion vermieden werden, da automatisch gesteuert einzelne Flächensegmente nicht angestrahlt und somit nicht zur Lichtemission angeregt werden.The surface element has several surface segments that are delimited from one another in a defined manner. This configuration enables a fine distribution of the light distribution on the projection surface, in particular the roadway, with many sectors or segments. This is particularly advantageous if different light functions are to be displayed or if a light function is to be individually adapted to different environmental conditions. This is particularly advantageous in the glare-free setting of a high beam of a headlight of a vehicle. In such a configuration, the dazzling of other road users with the high beam function set can thus be avoided, since automatically controlled individual surface segments are not illuminated and are therefore not excited to emit light.

Die Flächensegmente des Flächenelements sind gleich ausgebildet und in Reihen und Spalten angeordnet. Somit weist das Flächenelement eine matrixartige Ausgestaltung mit Flächensegmenten auf.The surface segments of the surface element have the same design and are arranged in rows and columns. The surface element thus has a matrix-like configuration with surface segments.

Insbesondere ist die Beleuchtungsvorrichtung als Scheinwerfer zur Vorfeldausleuchtung eines Fahrzeugs und zur Erzeugung eines Fernlichts ausgebildet.In particular, the lighting device is designed as a headlight for the front illumination of a vehicle and for generating a high beam.

Es kann vorgesehen sein, dass mit der Beleuchtungsvorrichtung und der einen Lichtquelle, dem Laser, auch die Abblendlichtfunktion zusätzlich erzeugbar ist. Es kann auch vorgesehen sein, dass die Abblendlichtfunktion der Beleuchtungsvorrichtung bei der Ausführung als Scheinwerfer durch eine anderweitige separate Lichtquelle realisierbar ist. In diesem Zusammenhang könnte auch eine nicht als Laser ausgebildete Diode oder auch ein LED-Array vorgesehen sein.It can be provided that the low beam function can also be generated with the lighting device and the one light source, the laser. It can also be provided that the low-beam function of the lighting device can be implemented by another separate light source when it is designed as a headlight. In this context, a diode that is not designed as a laser or an LED array could also be provided.

Vorzugsweise ist mit der Beleuchtungsvorrichtung vorgesehen, dass das im Stand der Technik bekannte LED-Array (beispielsweise das LED-Array in Fig. 1) durch das über Anregung zur Lichtemission ausgebildete Flächenelement ersetzt ist. Durch den zusätzlichen Reflektor kann das vorzugsweise von einem Laser emittierte Licht situationsabhängig derart abgelenkt werden, dass der Laserstrahl die aktuell benötigte Lichtverteilung auf dem Flächenelement abrastert. Dies geschieht so schnell, dass das Abrastern der Lichtverteilung für das menschliche Auge nicht sichtbar ist.It is preferably provided with the lighting device that the LED array known in the prior art (for example the LED array in FIG Fig. 1 ) is replaced by the surface element formed by excitation for light emission. The additional reflector allows the light, which is preferably emitted by a laser, to be deflected depending on the situation in such a way that the laser beam scans the currently required light distribution on the surface element. This happens so quickly that the scanning of the light distribution is not visible to the human eye.

Das Flächenelement dient in seiner vorzugsweisen Ausgestaltung auch dazu, um aus farbigen und somit im sichtbaren Spektralbereich liegenden Licht oder auch im unsichtbaren Spektralbereich liegenden Licht der Lichtquelle weißes Licht zu erzeugen. Dieses wird dann über die Abbildungsoptik, insbesondere zumindest einer Linse, auf die Fahrbahn projiziert. Ein wesentlicher Vorteil bei der Verwendung eines Lasers und einem segmentierten Flächenelement ist hierbei, dass die Rasterpunkte deutlich kleiner sind als die Kantenlängen bei herkömmlichen LED-Chips innerhalb eines Arrays, und somit eine feinere Lichtverteilung ermöglicht werden kann. Darüber hinaus können eine Vielzahl von Leuchtdioden in einem Array durch einen einzigen Laser und vorzugsweise einen Reflektor, insbesondere einen Spiegel, ersetzt werden.In its preferred embodiment, the surface element also serves to generate white light from colored light of the light source that is therefore in the visible spectral range or also in the invisible spectral range. This is then projected onto the roadway via the imaging optics, in particular at least one lens. A major advantage when using a laser and a segmented surface element is that the raster points are significantly smaller than the edge lengths in conventional LED chips within an array, and thus a finer light distribution can be made possible. In addition, a large number of light-emitting diodes in an array can be replaced by a single laser and preferably a reflector, in particular a mirror.

Prinzipiell kann neben den bereits erläuterten Lichtfunktionen des Fernlichts und des Abblendlichts eines Scheinwerfers für ein Kraftfahrzeug auch die Realisierung anderer Lichtfunktionen, wie beispielsweise Kurvenlicht oder Tagfahrlicht etc., mit der Beleuchtungsvorrichtung erzeugt werden.In principle, in addition to the light functions of the high beam and the low beam of a headlight for a motor vehicle which have already been explained, the realization of other light functions, such as, for example, cornering light or daytime running light, etc., can also be generated with the lighting device.

Ein Ausführungsbeispiel der Erfindung wird nachfolgend anhand einer schematischen Zeichnung näher erläutert. Es zeigen:

Fig.1
eine schematische Darstellung einer aus dem Stand der Technik bekannten Beleuchtungsvorrichtung; und
Fig. 2
eine schematische Darstellung einer erfindungsgemäßen Beleuchtungsvorrichtung.
An embodiment of the invention is explained in more detail below with the aid of a schematic drawing. Show it:
Fig.1
a schematic representation of a lighting device known from the prior art; and
Fig. 2
a schematic representation of a lighting device according to the invention.

In den Figuren werden gleiche oder funktionsgleiche Elemente mit den gleichen Bezugszeichen versehen.Identical or functionally identical elements are provided with the same reference symbols in the figures.

In Fig. 2 ist in einer schematischen Darstellung eine Beleuchtungsvorrichtung als Frontscheinwerfer 1' für ein Kraftfahrzeug realisiert. In Fig. 2 sind lediglich die für das Verständnis der Erfindung ausreichenden Komponenten des Frontscheinwerfers 1' gezeigt. Dieser kann darüber hinausgehend eine Mehrzahl weiterer Komponenten aufweisen.In Fig. 2 is a schematic representation of a lighting device as a headlight 1 'for a motor vehicle. In Fig. 2 only the components of the headlight 1 'which are sufficient for understanding the invention are shown. This can also have a plurality of other components.

Der Frontscheinwerfer 1' ist somit zur Vorfeldausleuchtung des Fahrzeugs ausgebildet und im Ausführungsbeispiel insbesondere mit der nachfolgend erläuterten Vorgehensweise und den nachfolgend erläuterten Komponenten zur Realisierung der Lichtfunktion des Fernlichts konzipiert. Insbesondere soll diesbezüglich ein blendfreies Fernlicht realisiert werden, welches in Abhängigkeit von anderen Verkehrsteilnehmern automatisch gesteuert unterschiedliche Bereiche des Fernlichts ausspart, die den erkannten Teilnehmer blenden würden. Dadurch wird ein blendfreies oder adaptives Fernlicht bereitgestellt.The headlight 1 'is thus designed to illuminate the apron of the vehicle and, in the exemplary embodiment, is designed in particular with the procedure explained below and the components explained below for realizing the light function of the high beam. In this regard, in particular, a glare-free high beam is to be realized which, depending on other road users, automatically cuts out different areas of the high beam which would blind the recognized subscriber. This provides a glare-free or adaptive high beam.

Der Frontscheinwerfer 1' weist zumindest eine Linse 2 als optisches Abbildungselement auf. Diese Linse 2 ist im Strahlengang der als Laser 6 ausgebildeten Lichtquelle positioniert. Darüber hinaus ist in der gezeigten Ausführung in der Brennebene der Linse 2 ein ebenes Flächenelement 8 angeordnet, welches eine Vielzahl von in Formgestaltung und Ausmaßen im Wesentlichen gleichen Flächensegmenten 11 aufweist. Das Licht von Parallelbündein, die nicht parallel zur optischen Achse der Linse 2 verlaufen, wird in einer Ebene hinter der Linse 2 gesammelt, die genau soweit von der Linse 2 entfernt ist, wie der Brennpunkt. Diese Ebene wird als Brennebene bezeichnet.The headlight 1 'has at least one lens 2 as an optical imaging element. This lens 2 is positioned in the beam path of the light source designed as a laser 6. In addition, in the embodiment shown, a flat surface element 8 is arranged in the focal plane of the lens 2, which has a multiplicity of surface segments 11 which are essentially the same in terms of shape and dimensions. The light from parallel bundles, that do not run parallel to the optical axis of the lens 2 is collected in a plane behind the lens 2 that is exactly as far away from the lens 2 as the focal point. This level is called the focal level.

Das Flächenelement 8 ist zwischen der Linse 2 und dem Laser 6 angeordnet und zur Ausleuchtung der Brennebene der Linse 2 ausgebildet. Das Flächenelement 8 ist zur Ausleuchtung der Brennebene durch Lichtemission aufgrund von Anregung des Materials des Flächenelements 8 durch das von der Lichtquelle, dem Laser 6, emittierten Lichts, gebildet.The surface element 8 is arranged between the lens 2 and the laser 6 and is designed to illuminate the focal plane of the lens 2. The surface element 8 is formed for illuminating the focal plane by light emission due to excitation of the material of the surface element 8 by the light emitted by the light source, the laser 6.

Darüber hinaus ist das Flächenelement 8 zur Wellenlängenkonversion des von dem Laser 6 emittierten Lichts ausgebildet.In addition, the surface element 8 is designed for wavelength conversion of the light emitted by the laser 6.

Zwischen dem Laser 6 und dem Flächenelement 8 ist ein Reflektor 7 angeordnet, welcher im Ausführungsbeispiel als Mikrospiegel realisiert ist, welcher in zumindest zwei Raumrichtungen bewegbar ist. Dadurch kann das von dem Laser 6 emittierte Licht 9 umgelenkt und als reflektierter Strahl 10 auf das Flächenelement 8 geleitet werden. Durch die flexible Bewegbarkeit des Reflektors 7 können somit spezifische Sektoren bzw. Segmente 11 des Flächenelements 8 bestrahlt und zur Lichtemission angeregt werden.Arranged between the laser 6 and the surface element 8 is a reflector 7, which in the exemplary embodiment is implemented as a micromirror which can be moved in at least two spatial directions. As a result, the light 9 emitted by the laser 6 can be deflected and directed as a reflected beam 10 onto the surface element 8. Due to the flexible mobility of the reflector 7, specific sectors or segments 11 of the surface element 8 can thus be irradiated and excited to emit light.

Das Material des Flächenelements 8 ist an den Spektralbereich des von einer dem Laser 6 emittierten Lichts 9 dahingehend angepasst, dass eine Konversion des Lichts so erfolgt, dass das von dem Flächenelement 8 emittierte Licht für das menschliche Auge weiß erscheint. Vorzugsweise ist das Material des Flächenelements 8 eine Phosphorzusammensetzung.The material of the surface element 8 is adapted to the spectral range of the light 9 emitted by the laser 6 in such a way that the light is converted in such a way that the light emitted by the surface element 8 appears white to the human eye. The material of the surface element 8 is preferably a phosphor composition.

Durch die Linse 2 wird das von dem Flächenelement 8 emittierte und für das menschliche Auge weiß erscheinende Licht auf die Fahrbahn 5 projiziert, wobei diesbezüglich ein Bildbereich 4' mit den Rastern der projizierten Segmente 12 dargestellt ist. Das Flächenelement 8 dienst somit zum einen als Mattscheibe bezüglich der Ausrichtung der Brennebene und zum anderen zur Strahlungskonversion des Laserlichts, welches im roten, grünen, blauen oder für das menschliche Auge unsichtbaren Spektralbereich, liegen kann.Through the lens 2, the light emitted by the surface element 8 and appearing white to the human eye is projected onto the roadway 5, an image area 4 ′ with the grids of the projected segments 12 being shown in this regard. The surface element 8 thus serves on the one hand as a focusing screen with regard to the alignment of the focal plane and on the other hand for the radiation conversion of the laser light, which can be in the red, green, blue or spectral range invisible to the human eye.

Durch die Segmentierung des Flächenelements 8 kann die strahlende Fläche begrenzt werden, welche nach der Projektion auf die Fahrbahn 5 die Sektoren bzw. Segmente 12 des blendfreien Fernlichts ergeben. Die Umlenkung des Lichtstrahls 9 bzw. 10 mit dem Reflektor 7 und somit die Bewegung und Abrasterung auf dem Flächenelement 8 bzw. den Segmenten 11 erfolgt so schnell, dass es für das menschliche Auge im Bildbereich 4' der Projektion nicht wahrnehmbar ist. Die auf die Fahrbahn 5 situationsabhängig projizierten Sektoren bzw. Segmente 12 erscheinen daher als permanent homogen ausgeleuchtete Bereiche.By segmenting the surface element 8, the radiating surface can be limited, which the sectors or segments 12 of the glare-free high beam result after the projection onto the roadway 5. The redirection of the light beam 9 or 10 with the reflector 7 and thus the movement and scanning on the surface element 8 or the segments 11 takes place so quickly that it is imperceptible to the human eye in the image area 4 'of the projection. The sectors or segments 12 projected onto the roadway 5 depending on the situation therefore appear as permanently homogeneously illuminated areas.

Der Frontscheinwerfer 1' gemäß der Darstellung in Fig. 2 weist somit für die erläuterte Fernlichtfunktionalität kein LED-Array gemäß der Darstellung in Fig. 1 mehr auf. Dieses LED-Array 3 ist durch das Flächenelement 8 ersetzt.The headlight 1 'as shown in Fig. 2 thus does not have an LED array for the high beam functionality explained as shown in FIG Fig. 1 more on. This LED array 3 is replaced by the surface element 8.

Das Flächenelement 8 ist darüber hinaus aus einem Material ausgebildet, welches selbst nichtleuchtend ist. Dies bedeutet, dass ohne Anregung des Materials des Flächenelements 8 durch das Licht der Lichtquelle keine Lichtemission erfolgt.The surface element 8 is also formed from a material which is itself non-luminous. This means that without excitation of the material of the surface element 8 by the light from the light source, there is no light emission.

Claims (9)

  1. Illumination device for a vehicle having at least one light source (6), which is a laser, and at least one optical imaging element (2) arranged in the beam path of the light source (6), wherein there is arranged between the light source (6) and the imaging element (2) a surface element (8), which is formed at least to illuminate the focal plane of the imaging element (2), and wherein the surface element (8) is formed to illuminate the focal plane through light emission due to exciting of the material of the surface element (8) by the light emitted from the light source (6),
    characterised in that
    the surface element (8) has multiple distinctly limited, identically formed surface segments (11) arranged in rows and columns, wherein the light emitted from the light source (6) is diverted via a reflector (7) to the surface element (8), wherein
    a) the reflector (7) is a mirror movable in at least two spatial directions, or
    b) the reflector (7) comprises a rotatably mounted roller, which has a reflective surface, and/or
    c) through the movement of the reflector (7) the light is divertable at a speed not resolvable by the human eye.
  2. Illumination device according to claim 1,
    characterised in that
    the surface element (8) is formed for converting wavelengths of the light emitted from the light source (6).
  3. Illumination device according to any one of the preceding claims,
    characterised in that
    the light source (6) is a laser diode.
  4. Illumination device according to any one of the preceding claims,
    characterised in that
    the surface element (8) is formed to be essentially flat.
  5. Illumination device according to any one of the preceding claims,
    characterised in that
    the surface element (8) is formed of a material having a phosphorus composition.
  6. Illumination device according to any one of the preceding claims,
    characterised in that
    the shape of the surface of the roller is formed, such that the light emitted from the light source (6) and reflected by the roller irradiates an entire column or an entire row of the surface element (8).
  7. Illumination device according to any one of the preceding claims,
    characterised in that
    the surface element (8) is formed of a non-self-luminous material.
  8. Illumination device according to any one of the preceding claims, which is formed as headlamp (1') for illuminating the area in front of a vehicle and to produce the full beam.
  9. Illumination device according to any one of the preceding claims,
    characterised in that
    the surface element (8) is arranged in the focal plane of the imaging element (2).
EP08013643.5A 2007-11-21 2008-07-30 Illumination device for a vehicle Active EP2063170B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP15000962.9A EP2918898A1 (en) 2007-11-21 2008-07-30 Illumination device for a vehicle

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102007055480A DE102007055480B3 (en) 2007-11-21 2007-11-21 Lighting device of a vehicle

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP15000962.9A Division-Into EP2918898A1 (en) 2007-11-21 2008-07-30 Illumination device for a vehicle
EP15000962.9A Division EP2918898A1 (en) 2007-11-21 2008-07-30 Illumination device for a vehicle

Publications (3)

Publication Number Publication Date
EP2063170A2 EP2063170A2 (en) 2009-05-27
EP2063170A3 EP2063170A3 (en) 2010-05-26
EP2063170B1 true EP2063170B1 (en) 2020-02-26

Family

ID=40344887

Family Applications (2)

Application Number Title Priority Date Filing Date
EP08013643.5A Active EP2063170B1 (en) 2007-11-21 2008-07-30 Illumination device for a vehicle
EP15000962.9A Ceased EP2918898A1 (en) 2007-11-21 2008-07-30 Illumination device for a vehicle

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP15000962.9A Ceased EP2918898A1 (en) 2007-11-21 2008-07-30 Illumination device for a vehicle

Country Status (2)

Country Link
EP (2) EP2063170B1 (en)
DE (1) DE102007055480B3 (en)

Families Citing this family (51)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010020930A1 (en) * 2008-08-22 2010-02-25 Koninklijke Philips Electronics N.V. Compact multiple beam type vehicle light system
CN102224374B (en) * 2008-11-21 2015-04-29 皇家飞利浦电子股份有限公司 Lighting device and method of generating output illumination
JP5577138B2 (en) 2010-04-08 2014-08-20 スタンレー電気株式会社 Vehicle headlamp
DE102010028949A1 (en) * 2010-05-12 2011-11-17 Osram Gesellschaft mit beschränkter Haftung headlight module
DE102010039683A1 (en) 2010-08-24 2012-03-01 Osram Ag Projection apparatus and method for operating a projection apparatus
DE102010062463A1 (en) * 2010-12-06 2012-06-06 Osram Ag Lighting-device i.e. vehicle headlight, has phosphor regions individually illuminatable by respective light sources, and aligned for diffuse radiation of light on downstream optical elements, which exhibit different optical properties
JP2013047091A (en) * 2011-07-25 2013-03-07 Sharp Corp Lighting device and vehicle headlamp including the same
GB2497949A (en) 2011-12-22 2013-07-03 Sharp Kk Headlight system with adaptive beam function
DE102012002232A1 (en) 2012-02-04 2012-09-20 Daimler Ag Illumination device i.e. headlight, for use in of vehicle for e.g. danger light function, has mirror system diverting laser light beams on other mirror system such that reflected laser light beams appear white
GB2504330A (en) 2012-07-26 2014-01-29 Sharp Kk Headlight system incorporating adaptive beam function
US10507759B2 (en) 2012-07-27 2019-12-17 Valeo Vision Adaptive lighting system for an automobile vehicle
FR2993831B1 (en) * 2012-07-27 2015-07-03 Valeo Vision ADAPTIVE LIGHTING SYSTEM FOR MOTOR VEHICLE
DE102012112994A1 (en) 2012-12-21 2014-06-26 Osram Opto Semiconductors Gmbh headlamp device
AT514834B1 (en) 2013-02-07 2017-11-15 Zkw Group Gmbh Headlight for a motor vehicle and method for generating a light distribution
AT513916B1 (en) 2013-02-07 2015-04-15 Zizala Lichtsysteme Gmbh Headlight for a motor vehicle and method for generating a light distribution
FR3002023B1 (en) 2013-02-14 2015-03-20 Valeo Vision SECURE ADAPTIVE LIGHTING SYSTEM
DE102013102205A1 (en) 2013-03-06 2014-09-11 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Lighting device for a motor vehicle
FR3004785A1 (en) * 2013-04-19 2014-10-24 Peugeot Citroen Automobiles Sa BEAM DISPLACEMENT LIGHTING DEVICE ACCORDING TO SEQUENCES ADAPTED TO DIFFERENT PHOTOMETRIC FUNCTIONS
FR3005493A1 (en) 2013-05-07 2014-11-14 Valeo Vision LIGHTING SYSTEM EMITTING DIFFERENT LIGHT RADIATION
FR3009060A1 (en) 2013-07-23 2015-01-30 Valeo Vision LIGHTING SYSTEM COMPRISING A WHITE LIGHT AND A LIGHT OF ANOTHER COLOR
FR3009061A1 (en) 2013-07-23 2015-01-30 Valeo Vision LIGHTING SYSTEM WITH IMPROVED DIFFUSED RADIATION SHAPING
FR3009370B1 (en) * 2013-07-30 2018-06-15 Valeo Vision LIGHTING SYSTEM WITH IMPROVED SCAN MEANS
DE102013215374A1 (en) * 2013-08-05 2015-02-05 Osram Opto Semiconductors Gmbh lighting arrangement
DE102014208660A1 (en) 2014-05-08 2015-11-12 Osram Gmbh Generating a Lichtabstrahlmusters in a far field
AT515996B1 (en) 2014-06-23 2016-09-15 Zizala Lichtsysteme Gmbh Method and headlight for generating a light distribution on a roadway
DE102014010372A1 (en) 2014-06-26 2015-12-31 Daimler Ag Device for emitting light and vehicle light
DE102014214522A1 (en) 2014-07-24 2016-01-28 Volkswagen Aktiengesellschaft Method and device for projecting light symbols on a roadway
AT516113B1 (en) 2014-08-12 2017-12-15 Zkw Group Gmbh Headlight for motor vehicles with laser unit
DE102014218957A1 (en) 2014-09-19 2016-03-24 Automotive Lighting Reutlingen Gmbh For the periodic deflection of a laser beam directed Lichtumlenkelement
DE102014218955A1 (en) 2014-09-19 2016-03-24 Automotive Lighting Reutlingen Gmbh Laser headlamp with a movable Lichtumlenkelement
EP3009735A1 (en) 2014-10-16 2016-04-20 Valeo Vision Light module including a diode
AT516422B1 (en) 2014-10-21 2016-07-15 Zizala Lichtsysteme Gmbh Method and headlight for generating a light distribution on a roadway
JP5897094B2 (en) * 2014-10-23 2016-03-30 スタンレー電気株式会社 Vehicle headlamp
JP6010085B2 (en) * 2014-10-23 2016-10-19 スタンレー電気株式会社 Vehicle headlamp
FR3027654B1 (en) 2014-10-24 2019-08-02 Valeo Vision LIGHTING AND / OR SIGNALING SYSTEM COMPRISING TELEMETRY MEANS
AT516442B1 (en) * 2014-11-07 2017-08-15 Zkw Group Gmbh Headlamp for vehicles with at least one laser light source
DE102014224562B4 (en) 2014-12-01 2020-12-17 Automotive Lighting Reutlingen Gmbh Method for generating a front light distribution with additional light distribution for a motor vehicle and motor vehicle lighting device
DE102015002281A1 (en) * 2015-02-21 2016-08-25 Audi Ag Lighting device with a conversion element for a motor vehicle and method for operating such
FR3034170B1 (en) 2015-03-24 2018-09-07 Valeo Vision LASER LIGHTING MODULE WITH SAFETY DEVICE
DE102015213389A1 (en) * 2015-07-16 2017-01-19 Osram Gmbh Mirror arrangement for a lighting device and lighting device with mirror arrangement
DE102015215660A1 (en) 2015-08-17 2017-02-23 Automotive Lighting Reutlingen Gmbh Laser headlamp with reduced color aberration
AT517693B1 (en) 2015-11-11 2017-04-15 Zkw Group Gmbh Converter for lighting devices
DE102015224880A1 (en) * 2015-12-10 2017-06-14 Osram Gmbh Headlamp for lighting
DE102016000253B4 (en) 2016-01-12 2020-07-23 Audi Ag Lighting device for generating a specifiable lighting backdrop
DE102016200590A1 (en) * 2016-01-19 2017-07-20 Robert Bosch Gmbh Lighting device and method for monitoring a lighting device
DE102016101884A1 (en) 2016-02-03 2017-08-17 Dr. Ing. H.C. F. Porsche Aktiengesellschaft headlights
DE102016013510B4 (en) * 2016-04-18 2019-03-14 Kastriot Merlaku Headlight system for vehicles of all kinds, with at least one light source and a camera for the road detection
DE102016223227A1 (en) * 2016-11-23 2018-05-24 Osram Gmbh ILLUMINATION DEVICE
CZ309003B6 (en) 2017-01-24 2021-11-18 Varroc Lighting Systems, s.r.o. Lighting equipment, in particular a projector system for a motor vehicle headlamp
JP6981174B2 (en) * 2017-10-25 2021-12-15 トヨタ自動車株式会社 Vehicle headlight device
CZ2019768A3 (en) 2019-12-12 2021-06-30 Varroc Lighting Systems, s.r.o. Vehicle lighting equipment with laser radiation source

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2075653A (en) * 1980-05-05 1981-11-18 Wagner Electric Corp Scan-synthesized-beam headlamp
EP0507316A2 (en) * 1991-04-05 1992-10-07 Canon Kabushiki Kaisha Polarizing element and image display apparatus having the polarizing element
US6132072A (en) * 1996-06-13 2000-10-17 Gentex Corporation Led assembly
JP2003295319A (en) * 2002-04-04 2003-10-15 Nitto Kogaku Kk Light source unit and projector
DE10315133A1 (en) * 2003-04-03 2004-10-14 Hella Kg Hueck & Co. Lighting unit for motor vehicles
DE10344173A1 (en) * 2003-09-22 2005-04-28 Hella Kgaa Hueck & Co Micromirror light beam direction control for road vehicle headlight uses array of micromirrors on flat support with two-axis adjustment
US20060221022A1 (en) * 2005-04-01 2006-10-05 Roger Hajjar Laser vector scanner systems with display screens having optical fluorescent materials
EP1722159A1 (en) * 2004-02-25 2006-11-15 Hitachi, Ltd. Vehicle headlight and vehicle operation support apparatus

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1210733B (en) * 1987-05-13 1989-09-20 Paolo Soardo PROGRAMMABLE HEADLIGHT FOR VEHICLES WITH BRIGHT DISTRIBUTION
JP2860765B2 (en) * 1995-03-07 1999-02-24 株式会社小松製作所 Control device for laser marking device
IT1320547B1 (en) 2000-07-21 2003-12-10 Fiat Ricerche LIGHTING DEVICE, PARTICULARLY PROJECTOR OR VEHICLE LIGHT WITH DIE DISTRIBUTION OF LIGHT SOURCES
CN100381861C (en) * 2000-11-03 2008-04-16 微视有限公司 Scanned display with variation compensation
DE10161177A1 (en) * 2001-12-13 2003-06-18 Hella Kg Hueck & Co Vehicle lighting unit, uses electron beam source for generating electron beam by excitation of luminous surface
DE10261183B3 (en) * 2002-12-20 2004-06-03 Daimlerchrysler Ag Automobile headlamp using LED module with asymmetric LED chip array for providing headlamp beam with asymmetric light distribution
US7462983B2 (en) 2003-06-27 2008-12-09 Avago Technologies Ecbu Ip (Singapore) Pte. Ltd. White light emitting device
US20050041433A1 (en) * 2003-08-18 2005-02-24 Visteon Global Technologies, Inc. Automotive lighting system
DE102005014353A1 (en) * 2005-03-24 2006-09-28 Premark Feg L.L.C., Wilmington Transport dishwasher and method therefor
DE102005014953A1 (en) 2005-04-01 2006-10-05 Audi Ag Motor vehicle with a lighting device with variable illumination volume

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2075653A (en) * 1980-05-05 1981-11-18 Wagner Electric Corp Scan-synthesized-beam headlamp
EP0507316A2 (en) * 1991-04-05 1992-10-07 Canon Kabushiki Kaisha Polarizing element and image display apparatus having the polarizing element
US6132072A (en) * 1996-06-13 2000-10-17 Gentex Corporation Led assembly
JP2003295319A (en) * 2002-04-04 2003-10-15 Nitto Kogaku Kk Light source unit and projector
DE10315133A1 (en) * 2003-04-03 2004-10-14 Hella Kg Hueck & Co. Lighting unit for motor vehicles
DE10344173A1 (en) * 2003-09-22 2005-04-28 Hella Kgaa Hueck & Co Micromirror light beam direction control for road vehicle headlight uses array of micromirrors on flat support with two-axis adjustment
EP1722159A1 (en) * 2004-02-25 2006-11-15 Hitachi, Ltd. Vehicle headlight and vehicle operation support apparatus
US20060221022A1 (en) * 2005-04-01 2006-10-05 Roger Hajjar Laser vector scanner systems with display screens having optical fluorescent materials

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
ANONYMOUS: "Cathode ray tube - Wikipedia", 14 November 2007 (2007-11-14), XP055454393, Retrieved from the Internet <URL:https://en.wikipedia.org/w/index.php?title=Cathode_ray_tube&oldid=171543802> [retrieved on 20180226] *
ANONYMOUS: "Digital micromirror device - Wikipedia", 29 July 2007 (2007-07-29), XP055454392, Retrieved from the Internet <URL:https://en.wikipedia.org/w/index.php?title=Digital_micromirror_device&oldid=147942854> [retrieved on 20180226] *
ANONYMOUS: "Liquid-crystal display - Wikipedia", 18 November 2007 (2007-11-18), XP055454390, Retrieved from the Internet <URL:https://en.wikipedia.org/w/index.php?title=Liquid-crystal_display&oldid=172239994> [retrieved on 20180226] *

Also Published As

Publication number Publication date
EP2918898A1 (en) 2015-09-16
EP2063170A3 (en) 2010-05-26
EP2063170A2 (en) 2009-05-27
DE102007055480B3 (en) 2009-08-13

Similar Documents

Publication Publication Date Title
EP2063170B1 (en) Illumination device for a vehicle
EP2357398B1 (en) Light module for a lighting device of a motor vehicle
EP2587125B1 (en) Headlamp projection module for a motor vehicle
AT514834B1 (en) Headlight for a motor vehicle and method for generating a light distribution
EP1864053B1 (en) Motor vehicle headlight
DE102008022795B4 (en) Motor vehicle headlight
AT519055B1 (en) vehicle headlights
EP3168527B1 (en) Light module for a vehicle headlamp and motor vehicle headlamp with such a light module
EP2643717B1 (en) Color-mixing convergent optical system
EP3224531A1 (en) Headlight module comprising a beam directing device and a luminophore
DE102008013603A1 (en) Light module for a lighting device
EP2789901A2 (en) Light module of a motor vehicle lighting device
DE102005020085A1 (en) Motor vehicle headlight
EP3140591A1 (en) Generating a light emission pattern in a far field
EP2543926A2 (en) Lens for bundling emitted light by means of a semiconductor light source (LED)
EP3301350B1 (en) Light module for a motor vehicle headlamp
DE102008036845B4 (en) lighting device
WO2016062520A1 (en) Light module of an illumination device and illumination device comprising such a light module
DE102017217164B4 (en) Projection device for generating a pixel-based lighting pattern
EP2984397A1 (en) Lighting unit for a vehicle headlamp
DE102016213380A1 (en) OPTICAL ELEMENT AND LIGHTING DEVICE
DE102014213368A1 (en) Light module for lighting device
DE102014218955A1 (en) Laser headlamp with a movable Lichtumlenkelement
DE102017213103A1 (en) LIGHTING SYSTEM AND HEADLIGHTS
DE102013226645A1 (en) Generating a Lichtabstrahlmusters by illuminating a phosphor surface

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MT NL NO PL PT RO SE SI SK TR

AX Request for extension of the european patent

Extension state: AL BA MK RS

17P Request for examination filed

Effective date: 20101126

AKX Designation fees paid

Designated state(s): DE FR GB IT

TPAC Observations filed by third parties

Free format text: ORIGINAL CODE: EPIDOSNTIPA

17Q First examination report despatched

Effective date: 20150728

REG Reference to a national code

Ref country code: DE

Ref legal event code: R079

Ref document number: 502008017025

Country of ref document: DE

Free format text: PREVIOUS MAIN CLASS: F21S0008120000

Ipc: F21S0041176000

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

RIC1 Information provided on ipc code assigned before grant

Ipc: F21S 41/176 20180101AFI20191030BHEP

Ipc: F21S 41/675 20180101ALI20191030BHEP

INTG Intention to grant announced

Effective date: 20191126

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): DE FR GB IT

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502008017025

Country of ref document: DE

REG Reference to a national code

Ref country code: DE

Ref legal event code: R097

Ref document number: 502008017025

Country of ref document: DE

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20200226

26N No opposition filed

Effective date: 20201127

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20220731

Year of fee payment: 15

P01 Opt-out of the competence of the unified patent court (upc) registered

Effective date: 20230529

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 20230720

Year of fee payment: 16

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20230721

Year of fee payment: 16

REG Reference to a national code

Ref country code: DE

Ref legal event code: R119

Ref document number: 502008017025

Country of ref document: DE

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20240201