EP3509909A1 - Headlight for a motor vehicle - Google Patents

Headlight for a motor vehicle

Info

Publication number
EP3509909A1
EP3509909A1 EP17761844.4A EP17761844A EP3509909A1 EP 3509909 A1 EP3509909 A1 EP 3509909A1 EP 17761844 A EP17761844 A EP 17761844A EP 3509909 A1 EP3509909 A1 EP 3509909A1
Authority
EP
European Patent Office
Prior art keywords
main light
headlight
light distribution
laser light
main
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.)
Withdrawn
Application number
EP17761844.4A
Other languages
German (de)
French (fr)
Inventor
Rene Übler
Thomas Hausmann
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP3509909A1 publication Critical patent/EP3509909A1/en
Withdrawn legal-status Critical Current

Links

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
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/0029—Spatial arrangement
    • B60Q1/0041—Spatial arrangement of several lamps in relation to each other
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/076—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle by electrical means including means to transmit the movements, e.g. shafts or joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/06—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle
    • B60Q1/08—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically
    • B60Q1/085—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights adjustable, e.g. remotely-controlled from inside vehicle automatically due to special conditions, e.g. adverse weather, type of road, badly illuminated road signs or potential dangers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/02—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments
    • B60Q1/04—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights
    • B60Q1/14—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to illuminate the way ahead or to illuminate other areas of way or environments the devices being headlights having dimming means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • 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
    • F21S41/60—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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2300/00—Indexing codes for automatically adjustable headlamps or automatically dimmable headlamps
    • B60Q2300/40—Indexing codes relating to other road users or special conditions

Definitions

  • the invention relates to a headlight for a motor vehicle and a corresponding motor vehicle.
  • main light modules which serve to generate the low beam and high beam
  • laser light module with high luminance.
  • the laser light module is rigidly coupled to a main light module, so that only the same area of the light distribution is intensified in its intensity by the laser light module, even if the corresponding main light module is pivotable in the headlight.
  • the object of the invention is to provide a headlamp for a motor vehicle, with the adaptive light functions can be realized by means of a laser light module.
  • the headlight according to the invention is intended for a motor vehicle.
  • it is a headlight for a motor vehicle.
  • the headlamp comprises a number of main light modules (ie one or more main light modules) for generating a main light distribution for low beam and high beam.
  • the generated main light distribution can be either the low beam or the high beam.
  • the individual main light modules can each be provided for generating both the low beam and the high beam or even for the production of the low beam or the high beam. Nevertheless, the whole of all the main light modules by appropriate driving generates a desired low beam or a desired high beam, regardless of whether a single main light module is provided only for the generation of low beam or high beam or both for the generation of low beam and high beam.
  • the headlight according to the invention further comprises a laser light module comprising one or more laser diodes for generating a laser light distribution in addition to the main light distribution.
  • the headlamp fer may optionally include a plurality of such laser light modules. Preferably, however, only a single laser light module is provided.
  • the headlight according to the invention is characterized in that in its operation the laser light distribution is decoupled from the main light distribution and is movable relative to this main light distribution and is preferably pivotable.
  • the construction of the headlamp according to the invention it can be controlled by means of a control device such that a movement of the laser light distribution is decoupled from and relative to the main light distribution.
  • the headlight according to the invention has the advantage that, regardless of the positioning of the main light distribution, certain areas in front of the vehicle can be illuminated depending on the situation with a higher light intensity. In this way, by means of the laser light module, an adaptive light distribution can be generated in addition to the main light distribution in the spotlight.
  • the laser light module or possibly only a part of the laser light module is movable relative to the number of main light modules by means of an actuator to thereby a movement and in particular a pivoting of the laser light distribution decoupled from the main light distribution and relative to this cause. It is thus achieved by means of a suitable actuator, which converts electrical current into mechanical movement, the movement of the laser light distribution.
  • the laser light module may also include a micro-optical system, which causes a movement of the laser light distribution decoupled from the main light distribution and relative thereto.
  • the micro-optical system may e.g. in a conventional manner comprise an array of micromirrors.
  • one or more of the main light modules and in particular all the main light modules are LED light modules which each comprise one or more LEDs (eg 5 to 30 LEDs) for generating the main light distribution.
  • LEDs eg 5 to 30 LEDs
  • one or more of the main light modules and in particular all main light modules are segmented light modules which in operation respectively generate a light distribution and in particular a high beam of segments which can be switched on and off.
  • segmented light modules are realized by the LED light modules described above. With the segmented light modules certain areas of the light distribution can be recessed depending on the situation in a suitable manner, for example, to avoid the glare of road users.
  • one or more of the main light modules and in particular all main light modules are rigidly mounted in the headlight. As a result, the size of the headlamp is reduced.
  • the headlamp comprises two main light modules, which are arranged side by side when the headlamp is installed in the motor vehicle in the direction of the vehicle width, wherein the laser light module is located in the direction of the vehicle width between or next to the main light modules.
  • the headlamp comprises exactly two main light modules and no further main light modules. Nonetheless, the headlamp may also include only one main light module or more than two main light modules.
  • the headlamp is designed (ie, controllable with a control device) in such a way that, in an operating mode of the headlamp, those areas of the main light distribution are amplified which do not lead to dazzling of other road users.
  • the headlight according to the invention is designed and controlled in this sense with a control device such that one or more such objects are illuminated in an operating mode of the headlamp, which lie in the emission direction of the headlamp in front of this. As a result, the driver of the motor vehicle is pointed to a risk of collision.
  • the invention relates to a motor vehicle, which comprises one or more headlamps according to the invention or one or more preferred variants of the headlamp according to the invention.
  • FIG. 1 shows a schematic representation of a variant of a headlight according to the invention.
  • Fig. 1 is shown schematically as an embodiment of the invention, the left front headlight 100 of a (not shown) motor vehicle in plan view of the front of the motor vehicle.
  • the right front headlamp is constructed mirror-symmetrically identical to the left front headlamp and both headlamps are used in operation to generate the high beam and the low beam in front of the motor vehicle.
  • a control device for controlling the various light modules of the headlamp 100 described below, a control device, not shown, is provided.
  • the control device processes information from other sensors, which detect, for example, the light of oncoming traffic or detect objects on the road in front of the motor vehicle.
  • the headlight 100 includes an inner main light module 1 and an externa ßeres main light module 1 ', which are indicated by hatched rectangles and are rigidly installed in the headlight.
  • both main light modules 1 and 1 'each serve to generate dipped beam and high beam.
  • Both main light modules are LED light modules, each comprising a plurality of LEDs, the light is thrown on a projection optics in the respective main light module on the street.
  • the main light modules are also segmented light modules, with which the activated high beam is divided into several on or off switchable segments, the segments in the light distribution represent vertical bars.
  • the segments are switched on or off by activating or deactivating assigned LEDs by means of the control device. In this way, depending on the traffic situation, certain areas in the light distribution can be left out in order, for example, to avoid the glare of road users.
  • the two main light modules 1 and 1 ' comprises the headlight of Fig. 1 in a conventional manner two daytime running light modules 2 and 2', which are turned on activation of the daytime running light and each comprise a light guide LED unit.
  • the headlight 100 further comprises a turn signal above the light modules 1, 1 ', 2 and 2', which is designated by the reference numeral 3.
  • the headlight of Fig. 1 is characterized in that in addition to the main light modules 1 and 1 ', a laser light module 4 is provided, which is schematically indicated by a dotted square and generates white laser light.
  • the laser light module is arranged between the two main light modules 1 and 1 ', but can also be located at any other position in the headlight, e.g. be positioned to the left of the inner main light module 1 or right next to the externa ßeren main light module 1 '.
  • the laser light module 4 is pivotable independently of the main light modules 1 and 1 'in the horizontal and vertical directions, as indicated by the double arrows P and P'.
  • an actuator (not shown) is provided, which converts electrical current into a mechanical movement of the laser light module 4.
  • the actuators can be realized for example via a servomotor. The actuation of the actuator is done with the above-mentioned control device.
  • the laser light module 4 comprises a single laser diode for generating its laser light distribution.
  • a plurality of laser diodes may be installed in the laser light module 4.
  • the laser light generated by the laser diode is thrown directly on a projection optics reflector and lens on the street.
  • the laser light module can also be a fiber-based light module in which the laser light generated via the laser diode is directed by means of a light guide to a corresponding exit location on the projection optics.
  • this function can also be achieved by means of a laser light module installed rigidly in the headlight, in which case the laser light distribution is moved, for example via a known micromirror array without relative movement of the laser light module with respect to the remaining headlight.
  • the embodiment of the invention described above has a number of advantages.
  • the light distribution generated by the main light modules is easily combined with an adaptive laser light distribution, the position of the generated laser light distribution being independent of the position of the remaining light distribution.
  • many different lighting functions can be realized.
  • certain areas in the high beam can be amplified, which do not lead to glare of road users.
  • areas that dazzle other road users are left out by appropriately switching off segments in the segmented main light modules.
  • certain detected objects in front of the motor vehicle can be illuminated with the laser light distribution in order to thereby warn the driver.
  • the laser light distribution can be used to realize a cornering light, in which by means of the laser light, the interior of a busy curve is illuminated.
  • only areas of the low beam can be enhanced with the high beam switched off by the adaptive laser light distribution.
  • the use of the additional laser light module also has the advantage that the range of the headlight and its contrast are increased. Likewise, the space is reduced compared to conventional headlamps, in which the main light modules are pivotable.

Abstract

The invention relates to a headlight for a motor vehicle, comprising a number of main light modules (1, 1') for generating a main light distribution for dipped beam and main beam as well as a laser light module (4) composed of one or a plurality of laser diodes for generating a laser light distribution in addition to the main light distribution. The headlight (100) is designed in such a manner that during operation the laser light distribution is movable in a decoupled manner from the main light distribution and is movable relative thereto.

Description

Scheinwerfer für ein Kraftfahrzeug  Headlight for a motor vehicle
Die Erfindung betrifft einen Scheinwerfer für ein Kraftfahrzeug sowie ein entsprechendes Kraftfahrzeug. The invention relates to a headlight for a motor vehicle and a corresponding motor vehicle.
Um die Reichweite von Scheinwerfern in Kraftfahrzeugen zu verbessern, ist es aus dem Stand der Technik bekannt, zusätzlich zu Hauptlichtmodulen, welche zur Erzeugung des Abblendlichts und Fernlichts dienen, ein Laserlichtmodul mit hoher Leuchtdichte zu verwenden. Das Laserlichtmodul ist dabei starr an ein Hauptlichtmodul gekoppelt, so dass immer nur der gleiche Bereich der Lichtverteilung in seiner Intensität durch das Laserlichtmodul verstärkt wird, auch wenn das entsprechende Hauptlichtmodul im Scheinwerfer verschwenkbar ist. In order to improve the range of headlamps in motor vehicles, it is known from the prior art, in addition to main light modules, which serve to generate the low beam and high beam, to use a laser light module with high luminance. The laser light module is rigidly coupled to a main light module, so that only the same area of the light distribution is intensified in its intensity by the laser light module, even if the corresponding main light module is pivotable in the headlight.
Aufgabe der Erfindung ist es, einen Scheinwerfer für ein Kraftfahrzeug zu schaffen, mit dem adaptive Lichtfunktionen mittels eines Laserlichtmoduls realisiert werden können. The object of the invention is to provide a headlamp for a motor vehicle, with the adaptive light functions can be realized by means of a laser light module.
Diese Aufgabe wird durch den Scheinwerfer gemäß Patentanspruch 1 gelöst. Weiterbildungen der Erfindung sind in den abhängigen Ansprüchen definiert. This object is achieved by the headlight according to claim 1. Further developments of the invention are defined in the dependent claims.
Der erfindungsgemäße Scheinwerfer ist für ein Kraftfahrzeug vorgesehen. Insbesondere handelt es sich um einen Frontscheinwerfer für ein Kraftfahrzeug. Der Scheinwerfer um- fasst eine Anzahl von Hauptlichtmodulen (d.h. ein oder mehrere Hauptlichtmodule) zur Erzeugung einer Hauptlichtverteilung für Abblendlicht und Fernlicht. Je nach Ansteuerung des Scheinwerfers kann die erzeugte Hauptlichtverteilung entweder das Abblendlicht oder das Fernlicht darstellen. Die einzelnen Hauptlichtmodule können jeweils zur Erzeugung von sowohl des Abblendlichts als auch des Fernlichts oder auch nur zur Erzeugung des Abblendlichts oder des Fernlichts vorgesehen sein. Nichtsdestotrotz erzeugt die Gesamtheit aller Hauptlichtmodule durch entsprechende Ansteuerung ein gewünschtes Abblendlicht bzw. ein gewünschtes Fernlicht, und zwar unabhängig davon, ob ein einzelnes Hauptlichtmodul nur zur Erzeugung von Abblendlicht oder Fernlicht bzw. sowohl zur Erzeugung von Abblendlicht und Fernlicht vorgesehen ist. Der erfindungsgemäße Scheinwerfer umfasst ferner ein Laserlichtmodul aus einer oder mehreren Laserdioden zur Erzeugung einer Laserlichtverteilung zusätzlich zu der Hauptlichtverteilung. Der Scheinwer- fer kann ggf. mehrere solcher Laserlichtmodule umfassen. Vorzugsweise ist jedoch nur ein einzelnes Laserlichtmodul vorgesehen. The headlight according to the invention is intended for a motor vehicle. In particular, it is a headlight for a motor vehicle. The headlamp comprises a number of main light modules (ie one or more main light modules) for generating a main light distribution for low beam and high beam. Depending on the activation of the headlamp, the generated main light distribution can be either the low beam or the high beam. The individual main light modules can each be provided for generating both the low beam and the high beam or even for the production of the low beam or the high beam. Nevertheless, the whole of all the main light modules by appropriate driving generates a desired low beam or a desired high beam, regardless of whether a single main light module is provided only for the generation of low beam or high beam or both for the generation of low beam and high beam. The headlight according to the invention further comprises a laser light module comprising one or more laser diodes for generating a laser light distribution in addition to the main light distribution. The headlamp fer may optionally include a plurality of such laser light modules. Preferably, however, only a single laser light module is provided.
Der erfindungsgemäße Scheinwerfer zeichnet sich dadurch aus, dass in seinem Betrieb die Laserlichtverteilung entkoppelt von der Hauptlichtverteilung und relativ zu dieser Hauptlichtverteilung bewegbar und vorzugsweise verschwenkbar ist. Mit anderen Worten wird es durch den Aufbau des erfindungsgemäßen Scheinwerfers ermöglicht, dass dieser mittels einer Steuereinrichtung derart ansteuerbar ist, dass eine Bewegung der Laserlichtverteilung entkoppelt von und relativ zu der Hauptlichtverteilung erfolgt. The headlight according to the invention is characterized in that in its operation the laser light distribution is decoupled from the main light distribution and is movable relative to this main light distribution and is preferably pivotable. In other words, it is made possible by the construction of the headlamp according to the invention that it can be controlled by means of a control device such that a movement of the laser light distribution is decoupled from and relative to the main light distribution.
Der erfindungsgemäße Scheinwerfer weist den Vorteil auf, dass unabhängig von der Positionierung der Hauptlichtverteilung bestimmte Bereiche vor dem Fahrzeug situationsabhängig mit höherer Lichtintensität beleuchtet werden können. Auf diese Weise kann mittels des Laserlichtmoduls eine adaptive Lichtverteilung ergänzend zu der Hauptlichtverteilung im Scheinwerferlicht erzeugt werden. The headlight according to the invention has the advantage that, regardless of the positioning of the main light distribution, certain areas in front of the vehicle can be illuminated depending on the situation with a higher light intensity. In this way, by means of the laser light module, an adaptive light distribution can be generated in addition to the main light distribution in the spotlight.
In einer besonders bevorzugten Ausgestaltung des erfindungsgemäßen Scheinwerfers ist das Laserlichtmodul oder ggf. auch nur ein Teil des Laserlichtmoduls relativ zu der Anzahl von Hauptlichtmodulen mittels einer Aktorik bewegbar, um hierdurch eine Bewegung und insbesondere eine Verschwenkung der Laserlichtverteilung entkoppelt von der Hauptlichtverteilung und relativ zu dieser zu bewirken. Es wird somit mittels einer geeigneten Aktorik, welche elektrischen Strom in mechanische Bewegung wandelt, die Bewegung der Laserlichtverteilung erreicht. Alternativ oder zusätzlich kann das Laserlichtmodul auch ein mikrooptisches System umfassen, welches eine Bewegung der Laserlichtverteilung entkoppelt von der Hauptlichtverteilung und relativ zu dieser bewirkt. Das mikrooptische System kann z.B. in an sich bekannter Weise ein Array aus Mikrospiegeln umfassen. In a particularly preferred embodiment of the headlight according to the invention, the laser light module or possibly only a part of the laser light module is movable relative to the number of main light modules by means of an actuator to thereby a movement and in particular a pivoting of the laser light distribution decoupled from the main light distribution and relative to this cause. It is thus achieved by means of a suitable actuator, which converts electrical current into mechanical movement, the movement of the laser light distribution. Alternatively or additionally, the laser light module may also include a micro-optical system, which causes a movement of the laser light distribution decoupled from the main light distribution and relative thereto. The micro-optical system may e.g. in a conventional manner comprise an array of micromirrors.
In einer weiteren bevorzugten Variante der Erfindung sind eines oder mehrere der Hauptlichtmodule und insbesondere alle Hauptlichtmodule LED-Lichtmodule, welche jeweils eine oder mehrere LEDs (z.B. 5 bis 30 LEDs) zur Erzeugung der Hauptlichtverteilung umfassen. Hierdurch kann eine Hauptlichtverteilung mit guter Reichweite generiert werden. In einer weiteren bevorzugten Ausführungsform sind eines oder mehrere der Hauptlichtmodule und insbesondere alle Hauptlichtmodule segmentierte Lichtmodule, welche im Betrieb jeweils eine Lichtverteilung und insbesondere ein Fernlicht aus an- und abschaltbaren Segmenten erzeugen. Vorzugsweise werden solche segmentierte Lichtmodule durch die oben beschriebenen LED-Lichtmodule realisiert. Mit den segmentierten Lichtmodulen können in geeigneter Weise bestimmte Bereiche aus der Lichtverteilung situationsabhängig ausgespart werden, um beispielsweise die Blendung von Verkehrsteilnehmern zu vermeiden. In a further preferred variant of the invention, one or more of the main light modules and in particular all the main light modules are LED light modules which each comprise one or more LEDs (eg 5 to 30 LEDs) for generating the main light distribution. As a result, a main light distribution with good range can be generated. In a further preferred embodiment, one or more of the main light modules and in particular all main light modules are segmented light modules which in operation respectively generate a light distribution and in particular a high beam of segments which can be switched on and off. Preferably, such segmented light modules are realized by the LED light modules described above. With the segmented light modules certain areas of the light distribution can be recessed depending on the situation in a suitable manner, for example, to avoid the glare of road users.
In einer weiteren, besonders bevorzugten Ausführungsform sind eines oder mehrere der Hauptlichtmodule und insbesondere alle Hauptlichtmodule starr im Scheinwerfer befestigt. Hierdurch wird die Baugröße des Scheinwerfers reduziert. In a further, particularly preferred embodiment, one or more of the main light modules and in particular all main light modules are rigidly mounted in the headlight. As a result, the size of the headlamp is reduced.
In einer weiteren Variante des erfindungsgemäßen Scheinwerfers umfasst der Scheinwerfer zwei Hauptlichtmodule, welche bei Einbau des Scheinwerfers im Kraftfahrzeug in Richtung der Fahrzeugbreite nebeneinander angeordnet sind, wobei sich das Laserlichtmodul in Richtung der Fahrzeugbreite zwischen oder neben den Hauptlichtmodulen befindet. Vorzugsweise umfasst der Scheinwerfer genau zwei Hauptlichtmodule und keine weiteren Hauptlichtmodule. Nichtsdestotrotz kann der Scheinwerfer ggf. auch nur ein Hauptlichtmodul oder mehr als zwei Hauptlichtmodule enthalten. In a further variant of the headlamp according to the invention, the headlamp comprises two main light modules, which are arranged side by side when the headlamp is installed in the motor vehicle in the direction of the vehicle width, wherein the laser light module is located in the direction of the vehicle width between or next to the main light modules. Preferably, the headlamp comprises exactly two main light modules and no further main light modules. Nonetheless, the headlamp may also include only one main light module or more than two main light modules.
Mit dem erfindungsgemäßen Scheinwerfer können je nach Ausgestaltung verschiedene Lichtfunktionen realisiert werden. In einer bevorzugten Ausführungsform ist der Scheinwerfer derart ausgestaltet (d.h. mit einer Steuereinrichtung derart ansteuerbar), dass in einem Betriebsmodus des Scheinwerfers solche Bereiche der Hauptlichtverteilung verstärkt werden, welche nicht zu einer Blendung anderer Verkehrsteilnehmer führen. Alternativ oder zusätzlich ist der erfindungsgemäße Scheinwerfer derart ausgestaltet und in diesem Sinne mit einer Steuereinrichtung derart ansteuerbar, dass in einem Betriebsmodus des Scheinwerfers ein oder mehrere solcher Objekte beleuchtet werden, welche in Abstrahlrichtung des Scheinwerfers vor diesem liegen. Hierdurch wird der Fahrer des Kraftfahrzeugs auf eine Kollisionsgefahr hingewiesen. Neben dem oben beschriebenen Scheinwerfer betrifft die Erfindung ein Kraftfahrzeug, welches einen oder mehrere erfindungsgemäße Scheinwerfer bzw. eine oder mehrere bevorzugte Varianten des erfindungsgemäßen Scheinwerfers umfasst. Depending on the design, different light functions can be realized with the headlight according to the invention. In a preferred embodiment, the headlamp is designed (ie, controllable with a control device) in such a way that, in an operating mode of the headlamp, those areas of the main light distribution are amplified which do not lead to dazzling of other road users. Alternatively or additionally, the headlight according to the invention is designed and controlled in this sense with a control device such that one or more such objects are illuminated in an operating mode of the headlamp, which lie in the emission direction of the headlamp in front of this. As a result, the driver of the motor vehicle is pointed to a risk of collision. In addition to the headlight described above, the invention relates to a motor vehicle, which comprises one or more headlamps according to the invention or one or more preferred variants of the headlamp according to the invention.
Ein Ausführungsbeispiel der Erfindung wird nachfolgend detailliert anhand der beigefügten Fig. 1 beschrieben. Diese Figur zeigt in schematischer Darstellung eine Variante eines erfindungsgemäßen Scheinwerfers. An embodiment of the invention will be described below in detail with reference to the accompanying Fig. 1. This figure shows a schematic representation of a variant of a headlight according to the invention.
In Fig. 1 ist schematisch als Ausführungsbeispiel der Erfindung der linke Frontscheinwerfer 100 eines (nicht gezeigten) Kraftfahrzeugs in Draufsicht auf die Front des Kraftfahrzeugs wiedergegeben. Der rechte Frontscheinwerfer ist spiegelsymmetrisch identisch zu dem linken Frontscheinwerfer aufgebaut und beide Frontscheinwerfer dienen im Betrieb zur Erzeugung des Fernlichts und des Abblendlichts vor dem Kraftfahrzeug. Zur Steuerung der im Folgenden beschriebenen verschiedenen Lichtmodule des Scheinwerfers 100 ist eine nicht dargestellte Steuereinrichtung vorgesehen. Dabei verarbeitet die Steuereinrichtung Informationen von anderen Sensoren, welche beispielsweise das Licht von Gegenverkehr erfassen oder Objekte auf der Straße vor dem Kraftfahrzeug erkennen. In Fig. 1 is shown schematically as an embodiment of the invention, the left front headlight 100 of a (not shown) motor vehicle in plan view of the front of the motor vehicle. The right front headlamp is constructed mirror-symmetrically identical to the left front headlamp and both headlamps are used in operation to generate the high beam and the low beam in front of the motor vehicle. For controlling the various light modules of the headlamp 100 described below, a control device, not shown, is provided. In this case, the control device processes information from other sensors, which detect, for example, the light of oncoming traffic or detect objects on the road in front of the motor vehicle.
In an sich bekannter Weise umfasst der Scheinwerfer 100 ein inneres Hauptlichtmodul 1 und ein äu ßeres Hauptlichtmodul 1 ', die durch schraffierte Rechtecke angedeutet sind und starr im Scheinwerfer verbaut sind. In der hier beschriebenen Ausführungsform dienen beide Hauptlichtmodule 1 und 1 ' jeweils zur Generierung von Abblendlicht und Fernlicht. Beide Hauptlichtmodule sind LED-Lichtmodule, welche jeweils eine Vielzahl von LEDs umfassen, deren Licht über eine Projektionsoptik in dem jeweiligen Hauptlichtmodul auf die Straße geworfen wird. Durch Aktivierung bestimmter LEDs mittels der oben erwähnten Steuereinrichtung kann ausschließlich die Abblendlichtverteilung generiert werden bzw. das Fernlicht angeschaltet werden. Bei den Hauptlichtmodulen handelt es sich ferner um segmentierte Lichtmodule, mit denen das aktivierte Fernlicht in mehrere an- bzw. abschaltbare Segmente aufgeteilt wird, wobei die Segmente in der Lichtverteilung vertikale Balken darstellen. Die Segmente werden dabei durch Aktivieren bzw. Deaktivieren zugeordneter LEDs mittels der Steuereinrichtung an- bzw. abgeschaltet. Auf diese Weise können je nach der Verkehrssituation bestimmte Bereiche in der Lichtverteilung ausgespart werden, um beispielsweise die Blendung von Verkehrsteilnehmern zu vermeiden. Neben den beiden Hauptlichtmodulen 1 und 1 ' umfasst der Scheinwerfer der Fig. 1 in an sich bekannter Weise zwei Tagfahrlichtmodule 2 und 2', welche bei Aktivierung des Tagfahrlichts angeschaltet werden und jeweils eine Lichtleiter-LED-Einheit umfassen. Der Scheinwerfer 100 umfasst ferner einen Blinker oberhalb der Lichtmodule 1 , 1 ', 2 und 2', der mit dem Bezugszeichen 3 bezeichnet ist. In known manner, the headlight 100 includes an inner main light module 1 and an externa ßeres main light module 1 ', which are indicated by hatched rectangles and are rigidly installed in the headlight. In the embodiment described here, both main light modules 1 and 1 'each serve to generate dipped beam and high beam. Both main light modules are LED light modules, each comprising a plurality of LEDs, the light is thrown on a projection optics in the respective main light module on the street. By activating certain LEDs by means of the above-mentioned control device, only the low-beam distribution can be generated or the high beam can be switched on. The main light modules are also segmented light modules, with which the activated high beam is divided into several on or off switchable segments, the segments in the light distribution represent vertical bars. The segments are switched on or off by activating or deactivating assigned LEDs by means of the control device. In this way, depending on the traffic situation, certain areas in the light distribution can be left out in order, for example, to avoid the glare of road users. In addition to the two main light modules 1 and 1 'comprises the headlight of Fig. 1 in a conventional manner two daytime running light modules 2 and 2', which are turned on activation of the daytime running light and each comprise a light guide LED unit. The headlight 100 further comprises a turn signal above the light modules 1, 1 ', 2 and 2', which is designated by the reference numeral 3.
Der Frontscheinwerfer der Fig. 1 zeichnet sich dadurch aus, dass zusätzlich zu den Hauptlichtmodulen 1 und 1 ' ein Laserlichtmodul 4 vorgesehen ist, welches schematisch durch ein gepunktetes Quadrat angedeutet ist und weißes Laserlicht erzeugt. Der Laserlichtmodul ist zwischen den beiden Hauptlichtmodulen 1 und 1 ' angeordnet, kann jedoch auch an einer beliebigen anderen Position im Scheinwerfer, z.B. links neben dem inneren Hauptlichtmodul 1 oder rechts neben dem äu ßeren Hauptlichtmodul 1 ' positioniert sein. Im Unterschied zu herkömmlichen Scheinwerfern ist das Laserlichtmodul 4 unabhängig von den Hauptlichtmodulen 1 und 1 ' in horizontaler und vertikaler Richtung verschwenkbar, wie durch die Doppelpfeile P und P' angedeutet ist. Zur Verschwenkung des Laserlichtmoduls ist eine (nicht gezeigte) Aktorik vorgesehen, welche elektrischen Strom in eine mechanische Bewegung des Laserlichtmoduls 4 umsetzt. Die Aktorik kann beispielsweise über einen Stellmotor realisiert sein. Die Ansteuerung der Aktorik erfolgt mit der oben erwähnten Steuereinrichtung. The headlight of Fig. 1 is characterized in that in addition to the main light modules 1 and 1 ', a laser light module 4 is provided, which is schematically indicated by a dotted square and generates white laser light. The laser light module is arranged between the two main light modules 1 and 1 ', but can also be located at any other position in the headlight, e.g. be positioned to the left of the inner main light module 1 or right next to the externa ßeren main light module 1 '. In contrast to conventional headlamps, the laser light module 4 is pivotable independently of the main light modules 1 and 1 'in the horizontal and vertical directions, as indicated by the double arrows P and P'. For pivoting the laser light module, an actuator (not shown) is provided, which converts electrical current into a mechanical movement of the laser light module 4. The actuators can be realized for example via a servomotor. The actuation of the actuator is done with the above-mentioned control device.
In der Ausführungsform der Fig. 1 umfasst das Laserlichtmodul 4 zur Erzeugung seiner Laserlichtverteilung eine einzelne Laserdiode. Gegebenenfalls können auch mehrere Laserdioden im Laserlichtmodul 4 verbaut sein. Darüber hinaus wird das mit der Laserdiode erzeugte Laserlicht direkt über eine Projektionsoptik aus Reflektor und Linse auf die Straße geworfen. In einer abgewandelten Ausführungsform kann das Laserlichtmodul auch ein faserbasiertes Lichtmodul sein, bei dem das über die Laserdiode erzeugte Laserlicht mittels eines Lichtleiters hin zu einem entsprechenden Austrittsort an der Projektionsoptik geleitet wird. In the embodiment of FIG. 1, the laser light module 4 comprises a single laser diode for generating its laser light distribution. Optionally, a plurality of laser diodes may be installed in the laser light module 4. In addition, the laser light generated by the laser diode is thrown directly on a projection optics reflector and lens on the street. In a modified embodiment, the laser light module can also be a fiber-based light module in which the laser light generated via the laser diode is directed by means of a light guide to a corresponding exit location on the projection optics.
Durch die von den Hauptlichtmodulen entkoppelte Verschwenkbarkeit des Laserlichtmoduls 4 können je nach Bedarf bestimmte Lichtbereiche in der Hauptlichtverteilung oder auch au ßerhalb der Hauptlichtverteilung mit hoher Intensität beleuchtet werden. Diese Funktion kann in einer abgewandelten Ausführungsform auch mittels eines starr im Scheinwerfer verbauten Laserlichtmoduls erreicht werden, wobei in diesem Fall die Laser- lichtverteilung z.B. über ein an sich bekanntes Mikrospiegelarray ohne Relativbewegung des Laserlichtmoduls in Bezug auf den restlichen Scheinwerfer bewegt wird. By the decoupled from the main light modules pivotability of the laser light module 4, specific light areas in the main light distribution or au ßerhalb the main light distribution can be illuminated with high intensity as needed. In a modified embodiment, this function can also be achieved by means of a laser light module installed rigidly in the headlight, in which case the laser light distribution is moved, for example via a known micromirror array without relative movement of the laser light module with respect to the remaining headlight.
Die im Vorangegangenen beschriebene Ausführungsform der Erfindung weist eine Reihe von Vorteilen auf. Insbesondere wird auf einfache Weise die mit den Hauptlichtmodulen generierte Lichtverteilung mit einer adaptiven Laserlichtverteilung kombiniert, wobei die Position der erzeugten Laserlichtverteilung unabhängig von der Position der restlichen Lichtverteilung ist. Auf diese Weise können viele unterschiedliche Lichtfunktionen realisiert werden. Insbesondere können bestimmte Bereiche im Fernlicht verstärkt werden, welche nicht zu einer Blendung von Verkehrsteilnehmern führen. Im Gegensatz hierzu werden Bereiche, welche andere Verkehrsteilnehmer blenden, durch entsprechendes Abschalten von Segmenten in den segmentierten Hauptlichtmodulen ausgespart. The embodiment of the invention described above has a number of advantages. In particular, the light distribution generated by the main light modules is easily combined with an adaptive laser light distribution, the position of the generated laser light distribution being independent of the position of the remaining light distribution. In this way, many different lighting functions can be realized. In particular, certain areas in the high beam can be amplified, which do not lead to glare of road users. In contrast, areas that dazzle other road users are left out by appropriately switching off segments in the segmented main light modules.
Darüber hinaus können mit der Laserlichtverteilung bestimmte erkannte Objekte vor dem Kraftfahrzeug, wie z.B. Fu ßgänger oder Tiere, dediziert angeleuchtet werden, um hierdurch den Fahrer zu warnen. Ebenso kann die Laserlichtverteilung zur Realisierung eines Kurvenlichts eingesetzt werden, bei dem mittels des Laserlichts das Innere einer befahrenen Kurve ausgeleuchtet wird. Darüber hinaus können auch nur Bereiche des Abblendlichts bei abgeschaltetem Fernlicht durch die adaptive Laserlichtverteilung verstärkt werden. Die Verwendung des zusätzlichen Laserlichtmoduls hat ferner den Vorteil, dass die Reichweite des Scheinwerferlichts sowie dessen Kontrast erhöht werden. Ebenso wird der Bauraum im Vergleich zu herkömmlichen Scheinwerfern verringert, bei denen die Hauptlichtmodule verschwenkbar sind. In addition, certain detected objects in front of the motor vehicle, such as pedestrians or animals, can be illuminated with the laser light distribution in order to thereby warn the driver. Likewise, the laser light distribution can be used to realize a cornering light, in which by means of the laser light, the interior of a busy curve is illuminated. In addition, only areas of the low beam can be enhanced with the high beam switched off by the adaptive laser light distribution. The use of the additional laser light module also has the advantage that the range of the headlight and its contrast are increased. Likewise, the space is reduced compared to conventional headlamps, in which the main light modules are pivotable.
Bezugszeichenliste LIST OF REFERENCE NUMBERS
100 Scheinwerfer 100 headlights
1 , 1 ' Hauptlichtmodule  1, 1 'main light modules
2, 2' Tagfahrlichtmodule  2, 2 'daytime running light modules
3 Blinker  3 turn signals
4 Laserlichtmodul  4 laser light module
P, P' Schwenkrichtungen des Laserlichtmoduls  P, P 'pivot directions of the laser light module

Claims

Patentansprüche claims
1 . Scheinwerfer für ein Kraftfahrzeug, umfassend eine Anzahl von Hauptlichtmodulen (1 , 1 ') zur Erzeugung einer Hauptlichtverteilung für Abblendlicht und Fernlicht sowie ein Laserlichtmodul (4) aus einer oder mehreren Laserdioden zur Erzeugung einer Laserlichtverteilung zusätzlich zu der Hauptlichtverteilung, dadurch gekennzeichnet, dass 1 . Headlamp for a motor vehicle, comprising a number of main light modules (1, 1 ') for generating a main light distribution for dipped beam and main beam and a laser light module (4) of one or more laser diodes for generating a laser light distribution in addition to the main light distribution, characterized in that
der Scheinwerfer (100) derart ausgestaltet ist, dass in seinem Betrieb die Laserlichtverteilung entkoppelt von der Hauptlichtverteilung und relativ zu dieser bewegbar ist.  the headlight (100) is configured such that in its operation the laser light distribution is decoupled from the main light distribution and is movable relative thereto.
2. Scheinwerfer nach Anspruch 1 , dadurch gekennzeichnet, dass das Laserlichtmodul (4) oder ein Teil des Laserlichtmoduls (4) relativ zu der Anzahl von Hauptlichtmodulen (1 , 1 ') mittels einer Aktorik bewegbar ist, um hierdurch eine Bewegung der Laserlichtverteilung entkoppelt von der Hauptlichtverteilung und relativ zu dieser zu bewirken. 2. Headlight according to claim 1, characterized in that the laser light module (4) or a part of the laser light module (4) relative to the number of main light modules (1, 1 ') by means of an actuator is movable, thereby decoupling a movement of the laser light distribution of the main light distribution and to cause relative to this.
3. Scheinwerfer nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass das Laserlichtmodul (4) ein mikrooptisches System umfasst, welches eine Bewegung der Laserlichtverteilung entkoppelt von der Hauptlichtverteilung und relativ zu dieser bewirkt. 3. Headlight according to claim 1 or 2, characterized in that the laser light module (4) comprises a micro-optical system which decouples a movement of the laser light distribution of the main light distribution and relative to this causes.
4. Scheinwerfer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eines oder mehrere der Hauptlichtmodule (1 , 1 ') LED-Lichtmodule sind, welche jeweils eine oder mehrere LEDs zur Erzeugung der Hauptlichtverteilung umfassen. 4. Headlight according to one of the preceding claims, characterized in that one or more of the main light modules (1, 1 ') are LED light modules, each comprising one or more LEDs for generating the main light distribution.
5. Scheinwerfer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eines oder mehrere der Hauptlichtmodule (1 , 1 ') segmentierte Lichtmodule sind, welche im Betrieb jeweils eine Lichtverteilung aus an- und abschaltbaren Segmenten erzeugen. 5. Headlight according to one of the preceding claims, characterized in that one or more of the main light modules (1, 1 ') are segmented light modules which generate in operation in each case a light distribution of switched on and off segments.
6. Scheinwerfer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass eines oder mehrere der Hauptlichtmodule (1 , 1 ') starr im Scheinwerfer (100) befestigt sind. 6. Headlight according to one of the preceding claims, characterized in that one or more of the main light modules (1, 1 ') are rigidly fixed in the headlight (100).
7. Scheinwerfer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Scheinwerfer (100) zwei Hauptlichtmodule (1 , 1 ') umfasst, welche bei Einbau des Scheinwerfers (100) im Kraftfahrzeug in Richtung der Fahrzeugbreite nebeneinander angeordnet sind, wobei sich das Laserlichtmodul (4) in Richtung der Fahrzeugbreite zwischen oder neben den Hauptlichtmodulen (1 , 1 ') befindet. 7. Headlight according to one of the preceding claims, characterized in that the headlight (100) comprises two main light modules (1, 1 '), which are arranged side by side when installing the headlamp (100) in the motor vehicle in the direction of the vehicle width, wherein the laser light module (4) is located in the direction of the vehicle width between or next to the main light modules (1, 1 ').
8. Scheinwerfer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Scheinwerfer (100) derart ausgestaltet ist, dass in einem Betriebsmodus des Scheinwerfers (100) solche Bereiche der Hauptlichtverteilung verstärkt werden, welche nicht zu einer Blendung anderer Verkehrsteilnehmer führen. 8. Headlight according to one of the preceding claims, characterized in that the headlight (100) is designed such that in an operating mode of the headlamp (100) such areas of the main light distribution are amplified, which do not lead to dazzling other road users.
9. Scheinwerfer nach einem der vorhergehenden Ansprüche, dadurch gekennzeichnet, dass der Scheinwerfer (100) derart ausgestaltet ist, dass in einem Betriebsmodus des Scheinwerfers (100) ein oder mehrere solcher Objekte beleuchtet werden, welche in Abstrahlrichtung des Scheinwerfers (100) vor diesem liegen. 9. Headlight according to one of the preceding claims, characterized in that the headlight (100) is designed such that in one operating mode of the headlamp (100) one or more such objects are illuminated, which lie in the emission direction of the headlamp (100) in front of this ,
10. Kraftfahrzeug, umfassend einen oder mehrere Scheinwerfer (100) nach einem der vorhergehenden Ansprüche. 10. Motor vehicle, comprising one or more headlights (100) according to one of the preceding claims.
EP17761844.4A 2016-09-07 2017-08-28 Headlight for a motor vehicle Withdrawn EP3509909A1 (en)

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CN109476253B (en) 2022-04-19

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