EP3014171A1 - Headlights for motor vehicles - Google Patents

Headlights for motor vehicles

Info

Publication number
EP3014171A1
EP3014171A1 EP14738353.3A EP14738353A EP3014171A1 EP 3014171 A1 EP3014171 A1 EP 3014171A1 EP 14738353 A EP14738353 A EP 14738353A EP 3014171 A1 EP3014171 A1 EP 3014171A1
Authority
EP
European Patent Office
Prior art keywords
light
unit
headlight according
laser
light sources
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP14738353.3A
Other languages
German (de)
French (fr)
Other versions
EP3014171B1 (en
Inventor
Markus REINPRECHT
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.)
ZKW Group GmbH
Original Assignee
Zizala Lichtsysteme GmbH
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 Zizala Lichtsysteme GmbH filed Critical Zizala Lichtsysteme GmbH
Publication of EP3014171A1 publication Critical patent/EP3014171A1/en
Application granted granted Critical
Publication of EP3014171B1 publication Critical patent/EP3014171B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • 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
    • F21S41/10—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
    • F21S41/18—Combination of light sources of different types or shapes
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • 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

Definitions

  • the invention relates to a headlamp for vehicles, with a plurality of light sources and an optics associated with the light sources.
  • a headlamp of this type is known for example from US 2011/0249460 AI.
  • a scanning laser system in which two laser beams deflected via moving micromirrors generate a luminous image on a phosphor matrix, which is projected by means of a lens on a roadway in order to generate a dynamically changeable light configuration there ,
  • a flat laser element is provided with individual, individually controllable light fields, the light fields each having a microlens assigned a superior microlens array, which projects the respective generated light image on a roadway.
  • an array of individual, individually controllable light sources preferably LEDs, provided Each light source is assigned a single look or light guide in the form of a light guide or a reflector.
  • the light image present at the light exit surface of the light guides is projected onto the roadway by means of optics, generally a lens.
  • DLPs Partial light digital light processors
  • a headlight of the type specified in which according to the invention a first light unit with at least one light source for generating a first, dynamically variable light image and a second, laser light unit with at least one laser light source, at least one beam deflection unit and at least one light conversion unit are, and the optics for merging the two luminous images, which is set up by the first lighting unit and at the light conversion unit of the second, laser light unit generated luminous images to a total light distribution on a roadway.
  • a headlamp is obtained which offers a high resolution, although the number of individual light sources is in a frame which does not cause problems in terms of cost or technical implementation, for example in terms of cooling and dimensions.
  • the first lighting unit has a plurality of light sources and each of the individual optics associated with the light sources.
  • the optics has two separate optical units, wherein each lighting unit is assigned to each one optical unit.
  • the optics may be advisable in terms of small size, if the optics has a single common optical unit, which is associated with both light units.
  • the at least one optical unit is designed as a lens.
  • the at least one laser light source which are combined in a structural unit, the at least one beam deflection unit and the at least one light conversion unit of the laser light unit.
  • the at least one light conversion unit of the laser lighting unit is provided on the first lighting unit in the region of its light exit surfaces.
  • a highly proven variant is characterized in that the at least one beam deflection unit is designed as a micromirror pivotable about at least one axis.
  • the first illumination unit has individual light sources arranged in at least two rows and a plurality of columns, wherein the individual light sources can be driven to generate a dynamically variable light distribution on a roadway.
  • the at least one beam deflecting unit for generating a dynamically variable illumination image consisting of optionally illuminable segments is set up on the light conversion unit.
  • the light sources of the first light unit are LEDs, favorable pricing results in a large selection with regard to the spectral light distribution and the light intensities.
  • FIG. 1 shows schematically the essential components of a headlamp according to the invention in a first embodiment
  • FIG. 2 shows a second embodiment of a headlamp according to the invention
  • 3 shows a third embodiment of a headlamp according to the invention
  • Fig. 5 shows the illuminated image of the second laser light unit
  • Fig. 6 composed of the light images of Fig. 4 and 5 total light distribution.
  • Fig. 1 shows a schematic diagram of a first embodiment of the invention.
  • Fig. 1 shows a schematic diagram of a first embodiment of the invention.
  • a headlight such as a housing, adjusting devices, etc.
  • first lighting unit 1 shows a first lighting unit 1, which, as shown and described in more detail below, has an array of individual light sources, in particular LEDs, which can be controlled individually or in groups individually.
  • the individual light sources are also assigned in this figure, not shown individual optics, which are formed for example in the form of a light guide or a reflector and at a light exit surface 2 generate a luminous image which can be projected by means of an optics, here by means of a lens 3 on the road ,
  • a second namely a laser light unit 4 is provided, which is shown on the left in FIG. 1 and which contains as essential components a laser light source 5 which generates a laser beam 6, a beam deflection unit 7, which is embodied here as a micromirror, and a Light conversion unit 8 has.
  • Such scanning laser light units are known, wherein the laser beam 6 generated by a swinging about one or two axes micromirror of the beam deflecting unit 7 at the light conversion unit 8 a specifiable luminous image, which is projected by another optics, here a lens 9, also on the road and combined with the light image generated by the first light unit 1 to form a total light image or a total light distribution on the roadway.
  • a lens 9 also on the road and combined with the light image generated by the first light unit 1 to form a total light image or a total light distribution on the roadway.
  • the two lenses 3 and 9 a further optics, such as a lens, be arranged downstream or it can be used optics that also use reflect
  • the laser light source 5 may, for example, generate a laser beam 6 with blue light, which is converted to white light at a phosphor of the light conversion unit 8. Although only a single laser light unit 4 is shown in this example, it is quite possible to use at least one further laser unit, which in turn scans the laser beam via the same beam deflection unit or via a further beam deflection unit to the light conversion unit 8.
  • a second embodiment of the invention wherein the first lighting unit 1 is shown in more concrete in one of the preferred embodiments and the same reference numerals are used for comparable parts.
  • the lighting unit 1 has light sources arranged in three rows and 2x8 and 1x28 columns and correspondingly many individual optics 10 or reflectors.
  • a light conversion unit 8 is provided in the region of the light exit surface of the first lighting unit 1, via which a laser beam 6 generated by a laser light source 5 deflects, deflected by an oscillating micromirror of a beam deflection unit 7.
  • the laser light unit 4 is formed by the laser light source 5, the beam deflection unit 7, and the light conversion unit 8 arranged on the first light unit 1.
  • FIG. 1 In contrast to the embodiment of FIG. 1 here is a two light units 1 and 4 common optics 11, namely a lens provided which merges the present at the exit surfaces of the optics 10 luminous image and determined by the scanning laser beam 6 at the light conversion unit 8 luminous image and can project onto a roadway.
  • a third embodiment of a headlight according to the invention is shown schematically, which corresponds in principle to that of FIG. 2, wherein the same reference numerals are used for comparable parts.
  • the first lighting unit 1 here consists of a light source unit 12 with individual light sources 13, which are designed as LEDs and are arranged in three rows of 26 columns.
  • This light source unit 12 or the individual light sources 13 is associated with a primary optics 14 which, according to the number of LEDs or light sources 13, here 78, has individual total reflecting light guides 15, which run forward and open in a light exit surface 16.
  • a light conversion unit 8 which is scanned by the laser beam 6, is arranged on this light exit surface 16, wherein the monochromatic laser light is converted into a light (white light) which is suitable for driving track illumination.
  • FIGS. 2 and 3 it can be seen that a number of the light exit openings of the individual light sources are covered by the light conversion unit 8 with a corresponding phosphor surface.
  • the spectral light distribution of the individual light sources 13 or LEDs in FIG. 3 is tuned to the phosphor of the light conversion unit 8 in such a way that they illuminate it or also cause it to shine, as shown in FIGS. 2 and 3
  • FIGS. 4 to 6 show three luminous images of a headlamp according to the invention, FIG. 4 showing the luminous image of a first luminous unit alone, the illumination in the vertical direction in this example being from -1 ° to + 5 ° and in the horizontal direction of FIG 15 ° left to 15 ° right and a division into three rows of 28 columns is provided. It should of course be clear that any division can be made here and, for example, that not every row should have the same number of columns.
  • FIG. 6 A corresponding light image is shown in Fig. 6, from which one recognizes the composition of the light images of Fig. 4 and Fig. 5, by the additional illumination of the area shown in Fig. 5, the functionality of the headlamp is substantially increased, as for this area a high-resolution laser light unit can be used, for example, which allows a vertical resolution of 0.5 ° in the entire illumination area and of 0.1 ° in the horizontal area.
  • the values given below may further emphasize the advantages of the invention.
  • the maximum illumination of the individual, caused by LEDs pixels is currently at about 80 to 100 lx, which is relatively little for a high beam, however.
  • the laser light unit which also reaches a maximum of, for example, 80 to 100 lx, a high beam is obtained which provides 180 to 200 lx of illumination in the high beam maximum, which meets current requirements for good headlights.
  • color effects can also be blurred and a more homogeneous, uniformly colored light image can be created.
  • the combination of the two lighting units also makes it possible to achieve a high dynamic resolution.
  • the relatively "coarse" pixels of the first lighting unit 1 cover a relatively large area, which is further subdivided by the high-resolution laser lighting unit 4.
  • very small areas can be controlled directly, so that the resolution of the overall system, as already mentioned, at horizontally less than 0.1 ° and vertically less than 0.5 °.
  • the illumination by the laser light unit 4 can be dispensed with even at lower speeds, which is advantageous for safety reasons, because, for example, when the vehicle is stationary, a light which is potentially dangerous or unpleasant for the person, emanating from the laser light unit not delivered.

Landscapes

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

Abstract

A headlight for motor vehicles, having multiple light sources (5, 13) and an optical system (11) associated with the light sources, wherein a first lighting unit (1) having at least one light source (13) for generating a first dynamically variable luminous image and a second laser lighting unit (4) having at least one laser light source (5), at least one beam deflector unit (7) and at least one light conversion unit (8) are provided, and the optical system (11) is configured to bring together the two luminous images, generated by the first lighting unit and in the light conversion unit in the second laser lighting unit, to provide an overall distribution of light onto a roadway.

Description

SCHEINWERFER FÜR FAHRZEUGE  HEADLIGHTS FOR VEHICLES
Die Erfindung bezieht sich auf einen Scheinwerfer für Fahrzeuge, mit mehreren Lichtquellen und einer den Lichtquellen zugeordneten Optik. The invention relates to a headlamp for vehicles, with a plurality of light sources and an optics associated with the light sources.
Ein Scheinwerfer dieser Art ist beispielsweise aus der US 2011/0249460 AI bekannt geworden. Bei diesem Scheinwerfer ist außer einem konventionellen Scheinwerfermodul für eine Abblendlichtverteilung noch ein scannendes Lasersystem vorgesehen, bei welchem zwei über bewegte Mikrospiegel abgelenkte Laserstrahlen auf einer Leuchtstoffmatrix ein Leuchtbild erzeugen, welches mittels einer Linse auf einer Fahrbahn projiziert wird, um dort eine dynamisch veränderbare Lichtkonfiguration zu erzeugen. A headlamp of this type is known for example from US 2011/0249460 AI. In this headlamp, in addition to a conventional headlamp module for a low-beam light distribution, a scanning laser system is provided, in which two laser beams deflected via moving micromirrors generate a luminous image on a phosphor matrix, which is projected by means of a lens on a roadway in order to generate a dynamically changeable light configuration there ,
Bei einem in der US 2008 / 0013329 AI geoffenbarten Scheinwerfer ist ein flächiges Laserelement mit einzelnen, individuell ansteuerbaren Leuchtfeldern vorgesehen, wobei den Leuchtfeldern je eine Mikrolinse eines vorgesetzten Mikrolinsenarrays zugeordnet ist, welches das jeweils erzeugte Leuchtbild auf eine Fahrbahn projiziert. In one disclosed in US 2008/0013329 AI headlamps a flat laser element is provided with individual, individually controllable light fields, the light fields each having a microlens assigned a superior microlens array, which projects the respective generated light image on a roadway.
Bei anderen Scheinwerfern zum Erzeugen dynamisch variabler Leuchtbilder, wie sie beispielsweise in der DE 10 2008 013 603 AI oder in der DE 10 2011 054 234 AI gezeigt und beschrieben sind, ist ein Array von einzelnen, individuell ansteuerbaren Lichtquellen, bevorzugt LEDs, vorgesehen, wobei jeder Lichtquelle eine Einzeloptik bzw. Lichtführung in Form eines Lichtleiters oder eines Reflektors zugeordnet ist. Das an der Lichtaustrittsfläche der Lichtführungen vorliegende Leuchtbild wird mittels einer Optik, im Allgemeinen einer Linse, auf die Fahrbahn projiziert. In other headlamps for generating dynamically variable luminous images, as shown and described for example in DE 10 2008 013 603 AI or in DE 10 2011 054 234 AI, an array of individual, individually controllable light sources, preferably LEDs, provided Each light source is assigned a single look or light guide in the form of a light guide or a reflector. The light image present at the light exit surface of the light guides is projected onto the roadway by means of optics, generally a lens.
Andererseits sind auch Scheinwerfer bekannt geworden, bei welchen eine zentrale Lichtquelle vorgesehen ist, deren Licht über eine Mehrzahl von Lichtleitern und über spezielle Optiken auf eine Fahrbahn projiziert wird, um auf dieser eine dynamisch variable Lichtverteilung zu erzeugen. Teilweise werden zur Lichtverteilung digitale Lichtprozessoren (DLPs) verwendet, wie in der US 7156542 B2, oder mechanisch bewegliche und dadurch selektiv ansteuerbare Lichtleiter, wie beispielsweise in der DE 40 06 938 AI. On the other hand, headlights have become known in which a central light source is provided, whose light is projected on a plurality of optical fibers and special optics on a roadway to produce a dynamically variable light distribution on this. Partial light digital light processors (DLPs) are used for light distribution, as in US 7156542 B2, or mechanically movable and thus selectively controllable light guide, such as in DE 40 06 938 AI.
Scheinwerfer der genannten Art nach dem Stand der Technik ermöglichen zwar ein den jeweiligen Fahrbedingungen dynamisch anpassbares Leuchtmuster, doch besteht ein erhöh- ter Bedarf nach weiteren Funktionalitäten bei adaptiven Frontscheinwerfersystemen, vor allem in Bezug auf Fernlichtfunktionen und eine höhere Auflösung des Leuchtbildes. Ungeachtet dieser Anforderungen sollen jedoch die Gestehungskosten in einem vertretbaren Rahmen liegen. Although prior art headlamps of this type allow a dynamically adaptable light pattern to the respective driving conditions, there is an increased The need for further functionalities in adaptive headlight systems, especially in relation to high beam functions and a higher resolution of the light image. Notwithstanding these requirements, however, the cost price should be within reasonable limits.
Demnach ist es eine Aufgabe der Erfindung, einen Scheinwerfer der gegenständlichen Art zu schaffen, welcher bei möglichst geringen Kosten eine hohe dynamische Auflösung, insbesondere in einem Fernbereich der Scheinwerferausleuchtung bietet. Accordingly, it is an object of the invention to provide a headlamp of the subject type, which offers a high dynamic resolution, especially in a remote area of the headlight illumination at the lowest possible cost.
Diese Aufgabe wird mit einem Scheinwerfer der eingangs angegebenen Art gelöst, bei welchem erfindungsgemäß eine erste Leuchteinheit mit zumindest einer Lichtquelle zum Erzeugen eines ersten, dynamisch variablen Leuchtbildes sowie eine zweite, Laser- Leuchteinheit mit zumindest einer Laserlichtquelle, zumindest einer Strahlablenkeinheit und zumindest einer Lichtkonversionseinheit vorgesehen sind, und die Optik zum Zusammenführen der beiden Leuchtbilder, welche von der ersten Leuchteinheit und an der Lichtkonversionseinheit der zweiten, Laser-Leuchteinheit erzeugten Leuchtbilder zu einer Gesamtlichtverteilung auf einer Fahrbahn eingerichtet ist. This object is achieved with a headlight of the type specified, in which according to the invention a first light unit with at least one light source for generating a first, dynamically variable light image and a second, laser light unit with at least one laser light source, at least one beam deflection unit and at least one light conversion unit are, and the optics for merging the two luminous images, which is set up by the first lighting unit and at the light conversion unit of the second, laser light unit generated luminous images to a total light distribution on a roadway.
Dank der Erfindung erhält man einen Scheinwerfer, der eine hohe Auflösung bietet, obwohl die Anzahl der Einzellichtquellen in einem Rahmen liegt, der weder bei den Kosten noch bei der technischen Verwirklichung Probleme erzeugt, beispielsweise hinsichtlich der Kühlung und der Abmessungen. Thanks to the invention, a headlamp is obtained which offers a high resolution, although the number of individual light sources is in a frame which does not cause problems in terms of cost or technical implementation, for example in terms of cooling and dimensions.
Bei einer praxisbewährten Ausführungsform ist vorgesehen, dass die erste Leuchteinheit eine Mehrzahl von Lichtquellen und je den Lichtquellen zugeordneten Einzeloptiken aufweist. In a practice-proven embodiment, it is provided that the first lighting unit has a plurality of light sources and each of the individual optics associated with the light sources.
Es kann weiters vorteilhaft sein, wenn die Optik zwei getrennte Optikeinheiten aufweist, wobei jeder Leuchteinheit je eine Optikeinheit zugeordnet ist. It may further be advantageous if the optics has two separate optical units, wherein each lighting unit is assigned to each one optical unit.
Andererseits kann es in Hinblick auf geringe Baugröße empfehlenswert sein, wenn die Optik eine einzige gemeinsame Optikeinheit aufweist, welche beiden Leuchteinheiten zugeordnet ist. Bei einer anderen sinnvollen Variante ist vorgesehen, dass die zumindest eine Optikeinheit als Linse ausgebildet ist. On the other hand, it may be advisable in terms of small size, if the optics has a single common optical unit, which is associated with both light units. In another useful variant, it is provided that the at least one optical unit is designed as a lens.
Besonders in Hinblick auf Servicefreundlichkeit ist es zweckmäßig, wenn die zumindest eine Laserlichtquelle, die zumindest eine Strahlablenkeinheit und die zumindest eine Lichtkonversionseinheit der Laser- Leuchteinheit in einer baulichen Einheit zusammengefasst sind. Especially with regard to serviceability, it is expedient if the at least one laser light source, which are combined in a structural unit, the at least one beam deflection unit and the at least one light conversion unit of the laser light unit.
Bei einer sehr kompakten Variante ist es vorteilhaft, wenn die zumindest eine Lichtkonversionseinheit der Laser-Leuchteinheit an der ersten Leuchteinheit im Bereich deren Lichtaustrittsflächen vorgesehen ist. In a very compact variant, it is advantageous if the at least one light conversion unit of the laser lighting unit is provided on the first lighting unit in the region of its light exit surfaces.
Eine äußerst bewährte Variante zeichnet sich dadurch aus, dass die zumindest eine Strahlablenkeinheit als um zumindest eine Achse verschwenkbarer Mikrospiegel ausgebildet ist. A highly proven variant is characterized in that the at least one beam deflection unit is designed as a micromirror pivotable about at least one axis.
Weiters ist es hinsichtlich einer guten Adaption des Leuchtbildes vorteilhaft, wenn die erste Leuchteinheit in zumindest zwei Zeilen und einer Mehrzahl von Spalten angeordnete Einzellichtquellen besitzt, wobei die Einzellichtquellen zum Erzeugen einer dynamisch variablen Lichtverteilung auf einer Fahrbahn ansteuerbar sind. Furthermore, with regard to a good adaptation of the illumination image, it is advantageous if the first illumination unit has individual light sources arranged in at least two rows and a plurality of columns, wherein the individual light sources can be driven to generate a dynamically variable light distribution on a roadway.
Es verbessert gleichfalls die Adaptionsfähigkeit, wenn die zumindest eine Strahlablenkeinheit zum Erzeugen eines aus wahlweise ausleuchtbaren Segmenten bestehenden dynamisch variablen Leuchtbildes an der Lichtkonversionseinheit eingerichtet ist. It also improves the adaptability when the at least one beam deflecting unit for generating a dynamically variable illumination image consisting of optionally illuminable segments is set up on the light conversion unit.
Falls die Lichtquellen der ersten Leuchteinheit LEDs sind, ergibt sich bei günstiger Preisgestaltung eine große Auswahl hinsichtlich der spektralen Lichtverteilung und der Lichtstärken. If the light sources of the first light unit are LEDs, favorable pricing results in a large selection with regard to the spectral light distribution and the light intensities.
Die Erfindung samt weiteren Vorteilen ist im Folgenden an Hand beispielsweiser Ausführungsformen näher erläutert, die in der Zeichnung veranschaulicht sind. In dieser zeigen The invention together with further advantages is explained in more detail below by way of example embodiments, which are illustrated in the drawing. In this show
Fig. 1 schematisch die wesentlichen Bauteile eines erfindungsgemäßen Scheinwerfers in einer ersten Ausführungsform, 1 shows schematically the essential components of a headlamp according to the invention in a first embodiment,
Fig. 2 eine zweite Ausführungsform eines Scheinwerfers nach der Erfindung, Fig. 3 eine dritte Ausführungsform eines Scheinwerfers nach der Erfindung, 2 shows a second embodiment of a headlamp according to the invention, 3 shows a third embodiment of a headlamp according to the invention,
Fig. 4 das Leuchtbild der ersten Leuchteinheit mit einer Mehrzahl von Lichtquellen, 4 shows the illuminated image of the first lighting unit with a plurality of light sources,
Fig. 5 das Leuchtbild der zweiten Laser-Leuchteinheit und Fig. 5 shows the illuminated image of the second laser light unit and
Fig. 6 die aus den Leuchtbildern nach Fig. 4 und 5 zusammengesetzte Gesamtlichtverteilung. Fig. 6, composed of the light images of Fig. 4 and 5 total light distribution.
Es wird zunächst auf Fig. 1 Bezug genommen, welche grob schematisch eine erste Ausführungsform der Erfindung zeigt. In dieser und auch den folgenden Figuren sind bloß jene Teile dargestellt, die für die Funktion der Erfindung wesentlich sind. Dem Fachmann wohl bekannte und für einen Scheinwerfer auch notwendige andere Teile, wie ein Gehäuse, Einstellvorrichtungen etc., sind der Einfachheit halber weggelassen. Reference is first made to Fig. 1, which shows a schematic diagram of a first embodiment of the invention. In this and the following figures, only those parts are shown which are essential for the function of the invention. For the sake of simplicity, other parts which are well known to the person skilled in the art and are also necessary for a headlight, such as a housing, adjusting devices, etc., have been omitted.
An der rechten Seite von Fig. 1 erkennt man eine erste Leuchteinheit 1, die, was weiter unten näher gezeigt und beschrieben ist, ein Array von einzelnen Lichtquellen, insbesondere LEDs, besitzt, die einzeln oder in Gruppen individuell ansteuerbar sind. Den einzelnen Lichtquellen sind in dieser Figur gleichfalls nicht gezeigte Einzeloptiken zugeordnet, die beispielsweise in Form eines Lichtleiters oder eines Reflektors ausgebildet sind und an einer Lichtaustrittsfläche 2 ein Leuchtbild erzeugen, welches mittels einer Optik, hier mittels einer Linse 3, auf die Fahrbahn projiziert werden kann. 1 shows a first lighting unit 1, which, as shown and described in more detail below, has an array of individual light sources, in particular LEDs, which can be controlled individually or in groups individually. The individual light sources are also assigned in this figure, not shown individual optics, which are formed for example in the form of a light guide or a reflector and at a light exit surface 2 generate a luminous image which can be projected by means of an optics, here by means of a lens 3 on the road ,
Des Weiteren ist eine zweite, nämlich eine Laser-Leuchteinheit 4 vorgesehen, die in Fig. 1 links gezeigt ist und die als wesentliche Bestandteile eine Laserlichtquelle 5, welche einen Laserstrahl 6 erzeugt, eine Strahlablenkeinheit 7, die hier als Mikrospiegel ausgebildet ist, sowie eine Lichtkonversionseinheit 8 besitzt. Derartige scannende Laserleuchteinheiten sind bekannt, wobei der Laserstrahl 6 durch einen um eine oder um zwei Achsen schwingenden Mikrospiegel der Strahlablenkeinheit 7 an der Lichtkonversionseinheit 8 ein vorgebbares Leuchtbild erzeugt, welches mittels einer weiteren Optik, hier einer Linse 9, gleichfalls auf die Fahrbahn projiziert wird und sich mit dem von der ersten Leuchteinheit 1 erzeugten Leuchtbild zu einem Gesamtleuchtbild bzw. einer Gesamtlichtverteilung auf der Fahrbahn vereinigt. Wenngleich hier zwei Linsen 3 und 9 gezeigt sind, soll dies nicht ausschließen, dass andere Optikkonstruktionen verwendet werden können. So kann den beiden Linsen 3 und 9 eine weitere Optik, z.B. eine Linse, nachgeordnet sein oder es können Optiken verwendet werden, die auch Reflektoren benutzen. Furthermore, a second, namely a laser light unit 4 is provided, which is shown on the left in FIG. 1 and which contains as essential components a laser light source 5 which generates a laser beam 6, a beam deflection unit 7, which is embodied here as a micromirror, and a Light conversion unit 8 has. Such scanning laser light units are known, wherein the laser beam 6 generated by a swinging about one or two axes micromirror of the beam deflecting unit 7 at the light conversion unit 8 a specifiable luminous image, which is projected by another optics, here a lens 9, also on the road and combined with the light image generated by the first light unit 1 to form a total light image or a total light distribution on the roadway. Although shown here are two lenses 3 and 9, this should not preclude other optics designs from being used. Thus, the two lenses 3 and 9, a further optics, such as a lens, be arranged downstream or it can be used optics that also use reflectors.
Die Laserlichtquelle 5 kann beispielsweise einen Laserstrahl 6 mit blauem Licht erzeugen, welches an einem Phosphor der Lichtkonversionseinheit 8 in weißes Licht umgewandelt wird. Wenngleich bei diesem Beispiel nur eine einzige Laser-Leuchteinheit 4 gezeigt ist, ist es durchaus möglich, zumindest noch eine weitere Lasereinheit zu verwenden, die ihrerseits entweder über dieselbe Strahlablenkeinheit oder aber über eine weitere Strahlablenkeinheit den Laserstrahl scannend zu der Lichtkonversionseinheit 8 führt. The laser light source 5 may, for example, generate a laser beam 6 with blue light, which is converted to white light at a phosphor of the light conversion unit 8. Although only a single laser light unit 4 is shown in this example, it is quite possible to use at least one further laser unit, which in turn scans the laser beam via the same beam deflection unit or via a further beam deflection unit to the light conversion unit 8.
Wie auch dem Stand der Technik zu entnehmen ist, ist es möglich, eine Phosphorschicht der Lichtkonversionseinheit auch von hinten mit dem Laserstrahl zu beaufschlagen, wobei die Abstrahlung des in Phosphor umgewandelten Lichtes nach vorne erfolgt. As can also be seen in the prior art, it is possible to apply a phosphor layer of the light conversion unit also from the back with the laser beam, wherein the radiation of phosphorus converted light takes place to the front.
In Fig. 2 ist eine zweite Ausführungsform der Erfindung gezeigt, wobei die erste Leuchteinheit 1 in einer der bevorzugten Ausführungsformen konkreter dargestellt ist und für vergleichbare Teile auch gleiche Bezugszeichen verwendet werden. An der Vorderseite der ersten Leuchteinheit 1 erkennt man Einzeloptiken 10, die hier als Reflektoren ausgebildet sind, an deren Basis - in Fig. 2 nicht ersichtlich - Lichtquellen, bevorzugt LEDs, angeordnet sind. Im vorliegenden Fall besitzt die Leuchteinheit 1 in drei Zeilen und 2x 8 und lx 28 Spalten angeordnete Lichtquellen und dementsprechend viele Einzeloptiken 10 bzw. Reflektoren. Auch hier ist im Bereich der Lichtaustrittsfläche der ersten Leuchteinheit 1 eine Lichtkonversionseinheit 8 vorgesehen, über welche ein von einer Laserlichtquelle 5 erzeugter Laserstrahl 6, abgelenkt durch einen schwingenden Mikrospiegel einer Strahlablenkeinheit 7 scannt. Hier ist die Laser-Leuchteinheit 4 von der Laserlichtquelle 5, der Strahlablenkeinheit 7 und der auf der ersten Leuchteinheit 1 angeordneten Lichtkonversionseinheit 8 gebildet. In Fig. 2, a second embodiment of the invention is shown, wherein the first lighting unit 1 is shown in more concrete in one of the preferred embodiments and the same reference numerals are used for comparable parts. At the front of the first light unit 1 can be seen individual optics 10, which are designed here as reflectors, at the base - in Fig. 2 not visible - light sources, preferably LEDs, are arranged. In the present case, the lighting unit 1 has light sources arranged in three rows and 2x8 and 1x28 columns and correspondingly many individual optics 10 or reflectors. Here, too, a light conversion unit 8 is provided in the region of the light exit surface of the first lighting unit 1, via which a laser beam 6 generated by a laser light source 5 deflects, deflected by an oscillating micromirror of a beam deflection unit 7. Here, the laser light unit 4 is formed by the laser light source 5, the beam deflection unit 7, and the light conversion unit 8 arranged on the first light unit 1.
Im Gegensatz zu der Ausführung nach Fig. 1 ist hier eine beiden Leuchteinheiten 1 und 4 gemeinsame Optik 11, nämlich eine Linse vorgesehen, welche das an den Austrittsflächen der Optiken 10 vorliegende Leuchtbild und das durch den scannenden Laserstrahl 6 an der Lichtkonversionseinheit 8 bestimmte Leuchtbild zusammenführt und auf eine Fahrbahn projizieren kann. In Fig. 3 ist eine dritte Ausführungsform eines erfindungsgemäßen Scheinwerfers schematisch dargestellt, die im Prinzip jener nach Fig. 2 entspricht, wobei für vergleichbare Teile auch gleiche Bezugszeichen verwendet werden. Die erste Leuchteinheit 1 besteht hier aus einer Lichtquelleneinheit 12 mit einzelnen Lichtquellen 13, welche als LEDs ausgeführt sind und in drei Reihen zu 26 Spalten angeordnet sind. Dieser Lichtquelleneinheit 12 bzw. den einzelnen Lichtquellen 13 ist eine Primäroptik 14 zugeordnet, die entsprechend der Anzahl der LEDs bzw. Lichtquellen 13, hier 78, einzelne totalreflektierende Lichtleiter 15 besitzt, welche nach vorne verlaufen und in einer Lichtaustrittsfläche 16 münden. An dieser Licht- austrittsfläche 16 ist wiederum eine Lichtkonversionseinheit 8 angeordnet, die durch den Laserstrahl 6 gescannt wird, wobei das monochromatische Laserlicht in ein für eine Fahr- bahnausleuchtung brauchbares Licht (weißes Licht) umgewandelt wird. In contrast to the embodiment of FIG. 1 here is a two light units 1 and 4 common optics 11, namely a lens provided which merges the present at the exit surfaces of the optics 10 luminous image and determined by the scanning laser beam 6 at the light conversion unit 8 luminous image and can project onto a roadway. In Fig. 3, a third embodiment of a headlight according to the invention is shown schematically, which corresponds in principle to that of FIG. 2, wherein the same reference numerals are used for comparable parts. The first lighting unit 1 here consists of a light source unit 12 with individual light sources 13, which are designed as LEDs and are arranged in three rows of 26 columns. This light source unit 12 or the individual light sources 13 is associated with a primary optics 14 which, according to the number of LEDs or light sources 13, here 78, has individual total reflecting light guides 15, which run forward and open in a light exit surface 16. In turn, a light conversion unit 8, which is scanned by the laser beam 6, is arranged on this light exit surface 16, wherein the monochromatic laser light is converted into a light (white light) which is suitable for driving track illumination.
Bei den Ausführungen nach Fig. 2 und 3 kann man erkennen, dass eine Anzahl der Lichtaustrittsöffnungen der Einzellichtquellen durch die Lichtkonversionseinheit 8 mit einer entsprechenden Phosphorfläche abgedeckt sind. Hier besteht die Möglichkeit, dass die spektrale Lichtverteilung der Einzellichtquellen 13 bzw. LEDs in Fig. 3 so auf den Phosphor der Lichtkonversionseinheit 8 abgestimmt wird, dass sie diesen durchleuchten bzw. auch zum Leuchten anregen, wodurch die in den Fig. 2 und 3 dargestellte Fläche für die Beleuchtung nicht„verloren geht". Es ist jedoch auch möglich, den entsprechenden Bereich nicht durch die einzelnen Lichtquellen auszuleuchten, wobei dann in diesem Bereich die Einzellichtquellen auch weggelassen werden können. In the embodiments according to FIGS. 2 and 3, it can be seen that a number of the light exit openings of the individual light sources are covered by the light conversion unit 8 with a corresponding phosphor surface. Here, there is the possibility that the spectral light distribution of the individual light sources 13 or LEDs in FIG. 3 is tuned to the phosphor of the light conversion unit 8 in such a way that they illuminate it or also cause it to shine, as shown in FIGS. 2 and 3 However, it is also possible not to illuminate the corresponding area by the individual light sources, in which case the individual light sources can also be omitted in this area.
In den Fig. 4 bis 6 sind drei Leuchtbilder eines erfindungsgemäßen Scheinwerfers dargestellt, wobei Fig. 4 das Leuchtbild einer ersten Leuchteinheit alleine zeigt, wobei sich die Ausleuchtung in vertikaler Richtung bei diesem Beispiel von -1° bis +5° und in horizontaler Richtung von 15° links bis 15° rechts erstreckt und eine Aufteilung in drei Zeilen zu je 28 Spalten vorgesehen ist. Es sollte natürlich klar sein, dass hier beliebige Aufteilungen vorgenommen werden können und beispielsweise nicht in jeder Zeile die gleiche Anzahl von Spalten vorgesehen sein muss. FIGS. 4 to 6 show three luminous images of a headlamp according to the invention, FIG. 4 showing the luminous image of a first luminous unit alone, the illumination in the vertical direction in this example being from -1 ° to + 5 ° and in the horizontal direction of FIG 15 ° left to 15 ° right and a division into three rows of 28 columns is provided. It should of course be clear that any division can be made here and, for example, that not every row should have the same number of columns.
Fig. 5 zeigt nun in vergrößertem Maßstab ein beispielsweises Leuchtbild, welches durch die zweite, Laserleuchteinheit 4 erzeugt wird. Hier werden die Bereiche in horizontaler Richtung von 6° links bis 6° rechts und in vertikaler Richtung von -1° bis +2° bevorzugt, da diese Bereiche den Großteil der Eindrücke bieten die für eine Fahrt im Dunkeln für den Fahrer notwendig sind. 5 now shows, on an enlarged scale, an exemplary luminous image which is generated by the second laser light unit 4. Here, the ranges in the horizontal direction of 6 ° left to 6 ° right and in the vertical direction of -1 ° to + 2 ° are preferred because this Areas provide the majority of the impressions that are necessary for a ride in the dark for the driver.
Diese beiden Leuchtbilder werden durch die Optik 3+9 oder 11 überlagert und zu einem Gesamtleuchtbild vereinigt, welches auf die Fahrbahn projiziert wird. Ein entsprechendes Leuchtbild ist in Fig. 6 gezeigt, aus welcher man die Zusammensetzung der Leuchtbilder nach Fig. 4 und Fig. 5 erkennt, durch die zusätzliche Beleuchtung des in Fig. 5 dargestellten Bereiches wird die Funktionalität des Scheinwerfers wesentlich erhöht, da für diesen Bereich eine hochauflösende Laser-Leuchteinheit verwendet werden kann, die beispielsweise eine vertikale Auflösung von 0,5° im gesamten Beleuchtungsbereich und von 0,1° im horizontalen Bereich ermöglicht. These two light images are superimposed by the optics 3 + 9 or 11 and combined to form a total light image, which is projected onto the road. A corresponding light image is shown in Fig. 6, from which one recognizes the composition of the light images of Fig. 4 and Fig. 5, by the additional illumination of the area shown in Fig. 5, the functionality of the headlamp is substantially increased, as for this area a high-resolution laser light unit can be used, for example, which allows a vertical resolution of 0.5 ° in the entire illumination area and of 0.1 ° in the horizontal area.
Die nachstehend angegebenen Werte mögen die Vorteile der Erfindung weiter hervorheben. Das Beleuchtungsmaximum der einzelnen, durch LEDs hervorgerufenen Pixel liegt derzeit bei circa 80 bis 100 lx, was allerdings für ein Fernlicht relativ wenig ist. Wenn man die Kombination mit der Laserleuchteinheit vornimmt, welche ebenfalls ein Maximum von beispielsweise 80 bis 100 lx erreicht, so erhält man ein Fernlicht, das in dem Fernlichtmaximum eine Beleuchtung von 180 bis 200 lx bietet, was dem derzeitigen Anforderungen an gute Scheinwerfer gerecht wird. The values given below may further emphasize the advantages of the invention. The maximum illumination of the individual, caused by LEDs pixels is currently at about 80 to 100 lx, which is relatively little for a high beam, however. When combined with the laser light unit, which also reaches a maximum of, for example, 80 to 100 lx, a high beam is obtained which provides 180 to 200 lx of illumination in the high beam maximum, which meets current requirements for good headlights.
Durch die Überlagerung verschiedener Leuchtbilder können auch Farbeffekte verwischt und ein homogeneres gleichfärbiges Lichtbild erzeugt werden. By overlaying different light images, color effects can also be blurred and a more homogeneous, uniformly colored light image can be created.
Die Kombination der beiden Leuchteinheiten ermöglicht es auch, zu einer hohen dynamischen Auflösung zu gelangen. Durch die relativ„groben" Pixel der ersten Leuchteinheit 1 wird eine verhältnismäßig große Fläche abgedeckt, welche durch die hochauflösende Laser- Leuchteinheit 4 weiter unterteilt wird. Dadurch können sehr kleine Bereiche direkt angesteuert werden, sodass die Auflösung des Gesamtsystems, wie bereits erwähnt, bei horizontal weniger als 0,1° und vertikal weniger als 0,5° liegen kann. The combination of the two lighting units also makes it possible to achieve a high dynamic resolution. The relatively "coarse" pixels of the first lighting unit 1 cover a relatively large area, which is further subdivided by the high-resolution laser lighting unit 4. As a result, very small areas can be controlled directly, so that the resolution of the overall system, as already mentioned, at horizontally less than 0.1 ° and vertically less than 0.5 °.
Die genannten Zahlen sind lediglich Beispiele und es können durch Verwendung von noch höher auflösenden zweidimensionalen Laserscannern diesbezüglich noch bessere Werte erreicht werden. Selbstverständlich können die Bereiche, in welchen die Leuchtbilder kombiniert werden, den jeweiligen Anforderungen entsprechend beliebig gestaltet werden, wobei keineswegs eine Einschränkung auf ein Fernlicht angedacht ist. The numbers mentioned are merely examples and even better values can be achieved by using even higher-resolution two-dimensional laser scanners in this regard. Of course, the areas in which the luminous images are combined, the respective requirements are made arbitrary, with no limitation on a high beam is considered.
Durch die Kombination der beiden Leuchteinheiten kann man auch bei geringeren Geschwindigkeiten auf die Ausleuchtung durch die Laser-Leuchteinheit 4 verzichten, was aus Sicherheitsgründen vorteilhaft ist, da beispielsweise bei stehendem Fahrzeug ein für Personen möglicherweise gefährliches bzw. unangenehmes, von der Laser-Leuchteinheit ausgehendes Licht nicht abgegeben wird. Due to the combination of the two light units, the illumination by the laser light unit 4 can be dispensed with even at lower speeds, which is advantageous for safety reasons, because, for example, when the vehicle is stationary, a light which is potentially dangerous or unpleasant for the person, emanating from the laser light unit not delivered.
Schließlich ist zu betonen, dass sich durch die Kombination der beiden Leuchteinheiten ein günstiges Preis-Leistungsverhältnis verglichen mit lediglich auf Laserscannern basierenden Scheinwerfern ergibt. Finally, it should be emphasized that the combination of the two lighting units results in a favorable price-performance ratio compared to only laser scanners based headlamps.

Claims

ANSPRÜCHE
1. Scheinwerfer für Fahrzeuge, mit mehreren Lichtquellen (5, 13) und einer den Lichtquellen zugeordneten Optik (3, 9; 11), dadurch gekennzeichnet, dass eine erste Leuchteinheit (1) mit zumindest einer Lichtquelle (13) zum Erzeugen eines ersten, dynamisch variablen Leuchtbildes sowie eine zweite, Laser-Leuchteinheit (4) mit zumindest einer Laserlichtquelle (5), zumindest einer Strahlablenkeinheit (7) und zumindest einer Lichtkonversionseinheit (8) vorgesehen sind, und die Optik (3, 9; 11) zum Zusammenführen der beiden Leuchtbilder, welche von der ersten Leuchteinheit und an der Lichtkonversionseinheit der zweiten, Laser-Leuchteinheit erzeugten Leuchtbilder zu einer Gesamtlichtverteilung auf einer Fahrbahn eingerichtet ist. A headlamp for vehicles, comprising a plurality of light sources (5, 13) and an optical system (3, 9, 11) assigned to the light sources, characterized in that a first lighting unit (1) is provided with at least one light source (13) for generating a first light source (13). a second, laser light unit (4) with at least one laser light source (5), at least one beam deflection unit (7) and at least one light conversion unit (8) are provided, and the optics (3, 9, 11) for merging the both luminous images, which is set up by the first lighting unit and at the light conversion unit of the second, laser light unit generated luminous images to a total light distribution on a roadway.
2. Scheinwerfer nach Anspruch 1, dadurch gekennzeichnet, dass die erste Leuchteinheit (1) eine Mehrzahl von Lichtquellen (13) und je den Lichtquellen zugeordneten Einzeloptiken (10; 15) aufweist. 2. Headlight according to claim 1, characterized in that the first lighting unit (1) has a plurality of light sources (13) and each associated with the light sources Einzeleloptiken (10; 15).
3. Scheinwerfer nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Optik zwei getrennte Optikeinheiten (3, 9) aufweist, wobei jeder Leuchteinheit (1, 4) je eine Optikeinheit zugeordnet ist. 3. Headlight according to claim 1 or 2, characterized in that the optics has two separate optical units (3, 9), wherein each lighting unit (1, 4) is associated with each one optical unit.
4. Scheinwerfer nach Anspruch 1 oder 2, dadurch gekennzeichnet, dass die Optik eine einzige gemeinsame Optikeinheit (11) aufweist, welche beiden Leuchteinheiten (1, 4) zugeordnet ist. 4. Headlight according to claim 1 or 2, characterized in that the optics has a single common optical unit (11) which is associated with both light units (1, 4).
5. Scheinwerfer nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass zumindest eine Optikeinheit (3, 9; ll)als Linse ausgebildet ist. 5. Headlight according to one of claims 1 to 4, characterized in that at least one optical unit (3, 9; ll) is designed as a lens.
6. Scheinwerfer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die zumindest eine Laserlichtquelle (5), die zumindest eine Strahlablenkeinheit (7) und die zumindest eine Lichtkonversionseinheit (8) der Laser-Leuchteinheit (4) in einer baulichen Einheit zusammengefasst sind. 6. Headlight according to one of claims 1 to 5, characterized in that the at least one laser light source (5), the at least one beam deflection unit (7) and the at least one light conversion unit (8) of the laser light unit (4) combined in a structural unit are.
7. Scheinwerfer nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die zumindest eine Lichtkonversionseinheit (8) der Laser-Leuchteinheit (4) an der ersten Leuchteinheit (1) im Bereich deren Lichtaustrittsfläche(16) vorgesehen ist. 7. Headlight according to one of claims 1 to 5, characterized in that the at least one light conversion unit (8) of the laser light unit (4) on the first light unit (1) in the region of the light exit surface (16) is provided.
8. Scheinwerfer nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die zumindest eine Strahlablenkeinheit (7) als um zumindest eine Achse verschwenkbarer Mikro- spiegel ausgebildet ist. 8. Headlight according to one of claims 1 to 7, characterized in that the at least one beam deflection unit (7) is designed as a pivotable about at least one axis micromirror.
9. Scheinwerfer nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die erste Leuchteinheit (1) in zumindest zwei Zeilen und einer Mehrzahl von Spalten angeordnete Einzellichtquellen (13) besitzt, wobei die Einzellichtquellen zum Erzeugen einer dynamisch variablen Lichtverteilung auf einer Fahrbahn ansteuerbar sind. 9. Headlight according to one of claims 1 to 8, characterized in that the first lighting unit (1) arranged in at least two rows and a plurality of columns arranged individual light sources (13), wherein the individual light sources for generating a dynamically variable light distribution on a roadway controlled are.
10. Scheinwerfer nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die zumindest eine Strahlablenkeinheit (7) zum Erzeugen eines aus wahlweise ausleuchtbaren Segmenten bestehenden dynamisch variable Leuchtbildes an der Lichtkonversionseinheit (8) eingerichtet ist. 10. Headlight according to one of claims 1 to 9, characterized in that the at least one beam deflection unit (7) for generating a selectively illuminatable segments consisting of dynamically variable illumination image at the light conversion unit (8) is arranged.
11. Scheinwerfer nach einem der Ansprüche 1 bis 10, dadurch gekennzeichnet, dass die Lichtquellen (13) der ersten Leuchteinheit (1) LEDs sind. 11. Headlight according to one of claims 1 to 10, characterized in that the light sources (13) of the first lighting unit (1) are LEDs.
EP14738353.3A 2013-06-25 2014-05-26 Vehicle headlamp Active EP3014171B1 (en)

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EP3014171B1 (en) 2020-07-01
JP6018342B2 (en) 2016-11-02
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AT514333B1 (en) 2014-12-15
US20160146419A1 (en) 2016-05-26

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