EP3447371B1 - Lighting device for a motor vehicle headlight - Google Patents

Lighting device for a motor vehicle headlight Download PDF

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Publication number
EP3447371B1
EP3447371B1 EP18183048.0A EP18183048A EP3447371B1 EP 3447371 B1 EP3447371 B1 EP 3447371B1 EP 18183048 A EP18183048 A EP 18183048A EP 3447371 B1 EP3447371 B1 EP 3447371B1
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EP
European Patent Office
Prior art keywords
light
reflector
lighting device
reflection
light source
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP18183048.0A
Other languages
German (de)
French (fr)
Other versions
EP3447371A1 (en
Inventor
Gerhard HONAUER
Jürgen ZORN
Tobias Tiefenbacher
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
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ZKW Group GmbH
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Publication date
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Publication of EP3447371A1 publication Critical patent/EP3447371A1/en
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Publication of EP3447371B1 publication Critical patent/EP3447371B1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
    • F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
    • F21S41/337—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector having a structured surface, e.g. with facets or corrugations
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V19/00—Fastening of light sources or lamp holders
    • F21V19/001—Fastening of light sources or lamp holders the light sources being semiconductors devices, e.g. LEDs
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/04—Optical design
    • F21V7/048—Optical design with facets structure
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/10—Construction
    • 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
    • F21S41/145—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device the main emission direction of the LED being opposite to the main emission direction 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
    • 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]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a lighting device for a motor vehicle headlight, comprising a reflector with a total reflection surface for reflecting light at least partially in the direction of an optical axis of the reflector, a first and a second light source for radiating light onto the reflector, the first and second light sources are spaced apart from one another at least in a direction normal to the optical axis of the reflector, the total reflection surface of the reflector having a number of first partial reflection surfaces facing the first light source, which are set up to image the light radiated in by the first light source in the form of at least one first light distribution of a first light function are, wherein the total reflection surface of the reflector has a number of second partial reflection surfaces facing the second light source, which are used to image the light radiated from the second light source in the form of a second n light distribution of a second light function are set up.
  • the invention relates to a vehicle headlight with a lighting device.
  • Lighting devices of the type mentioned at the outset are known, for example, from headlights in which two light sources are attached in front of a reflector arrangement, the reflector arrangement having different areas which are intended to fulfill different lighting functions.
  • headlights have become known in which a low-beam light source and a high-beam light source are attached in front of a one-piece reflector arrangement, the reflector arrangement having two different reflector areas to produce two different light distributions, namely a low-beam light distribution and a high-beam light distribution.
  • it is particularly important to avoid crosstalk from the low beam to the high beam which can be achieved by appropriate design measures.
  • a spatial and structural separation of individual reflector areas to implement different light distributions leads to limitations in terms of the size of the lighting device, which is also associated with limitations in its design.
  • One object of the invention is therefore to create a lighting device that can be designed largely freely in terms of its shape and is suitable for generating at least two different light distributions.
  • the total reflection surface of the reflector is at least partially composed of first and second partial reflection surfaces arranged alternately next to one another, the first and second light sources being arranged in a region in front of the reflector in such a way that that their radiated light is at least partially radiated against the direction of the optical axis of the reflector onto the reflector.
  • the lighting device according to the invention is not subject to any particular restrictions in terms of its size.
  • the arrangement of the light sources in front of the reflector enables improved cooling of the light sources, especially when used for a vehicle headlight, since the area in front of the reflector can be closed off with a cover plate, for example, through which the heat emitted by the light sources can be emitted to the environment .
  • optical axis of the reflector is understood to mean an optical axis which is oriented in the main emission direction of the reflector.
  • the first and second light functions do not necessarily have to be different from one another. However, the light distributions that are generated by the respective light source and the associated partial reflection surface are different from one another. This should mean that, for example, the first light distribution and the second light distribution can each form part of an overall light distribution. For example, it is conceivable that the first light distribution and the second light distribution together result in a low beam distribution—thus the first light distribution and the second light distribution represent partial light distributions taken on their own.
  • total reflection area refers to the entire area of the reflector that is set up to reflect light from the light sources.
  • the first light function and the second light function are selected from the group: daytime running lights, position lights, side marker lights, direction indicator lights, low beams, cornering lights, high beams, static cornering lights or cornering lights.
  • These light functions are known to those skilled in the art, with the associated light distributions being specified in the relevant guidelines and standards.
  • Regulation No. 123 of the United Nations Economic Commission for Europe (UN/ECE) - Uniform conditions for the approval of adaptive front lighting systems (AFS) for motor vehicles and Regulation No. 48 of the United Nations Economic Commission for Europe (UN/ECE) - Uniform conditions for the approval of vehicles with regard to the attachment of lighting and light signaling devices.
  • first and the second light function deviate from one another, with all permutations or combinations of the functions mentioned being conceivable in principle.
  • the following combinations in particular can be implemented particularly advantageously: daytime running lights/position lights; daytime running light/side marker light; daytime running light/direction indicator light or flashing light; direction indicator light / position light; Direction indicator light / side marker light; low beam / cornering light; high beam / cornering light; low beam / static cornering light; static left cornering light/ static right cornering light; or also a specific combination of individual segments of a matrix-shaped segmented lighting device, in which the light distribution generated by the lighting device is composed of individual segments that could be combined as follows, for example: high beam/low beam matrix segment a / high beam/low beam matrix segment.
  • the overall reflection surface consists exclusively of first and second partial reflection surfaces arranged next to one another.
  • the overall reflection surface has at least one third partial reflection surface, preferably a number of third partial reflection surfaces, for generating a further light distribution.
  • the at least one third partial reflection surface faces the first and/or the second light source.
  • the lighting device has a light sensor for checking the light function of at least one of the light sources, the light distribution generated by the at least one third partial reflection surface being designed in such a way and the light sensor being arranged in such a way that the light emitted by the at least one third Reflection surface generated light distribution radiates onto the light sensor.
  • This light sensor can be connected, for example, to an evaluation unit that monitors the state of the lighting device and, if a faulty state is inferred, takes appropriate measures, such as an error display.
  • the light distribution generated by the at least one third partial reflection surface is a light distribution of a light function selected from the following group: daytime running lights, position lights, side marker lights, direction indicator lights, low beams, cornering lights, high beams, static cornering lights, cornering lights.
  • individual partial reflection surfaces in particular the first and second partial reflection surfaces, are formed in strips and arranged next to one another, strips arranged next to one another being connected to one another.
  • the connection of the strips can either directly with one another or also via further intervening strips, for example strips of a third partial reflecting surface.
  • the first light source radiates at first angles of incidence and the second light source at second angles of incidence onto the respective partial reflection surfaces, with each partial reflection surface having an angle of inclination which does not correspond to the respective angle of incidence of the associated light source exceeds, wherein the angle are related to the optical axis of the reflector.
  • the light sources can be arranged, for example, at an angle of between 20° and 75° in relation to the optical axis. The arrangement transverse to the optical axis of the reflector allows a short construction of the lighting device in the direction of the optical axis of the reflector.
  • the lighting device has imaging optics, which are arranged downstream of the reflector for imaging at least part of the light reflected by the reflector.
  • the imaging optics can be designed as a projection lens or, for example, as a pillow optics.
  • the imaging optics have microstructures for the targeted influencing of the light distribution emitted by the imaging optics.
  • microstructures is understood to mean projections or depressions on the surface of the respective optical component, the dimensions of which are at most a few tenths of a millimeter and which are suitable for influencing the light image emitted by the respective optical element.
  • the microstructures can be set up to deflect light in a targeted manner in a specific direction. As an alternative to this, they can also be set up to generate diffuse radiation.
  • the reflector is formed in one piece with a light-conducting body, which comprises the imaging optics, in that the reflector is formed on a light-reflecting end section of the light-conducting body.
  • individual partial reflection surfaces in particular the first and second partial reflection surfaces, are designed as strip-shaped surfaces arranged next to one another on the surface of the end section, with the first and second partial reflection surfaces being inclined towards one another.
  • the inclination of the partial reflection surfaces in relation to the incident light can already be sufficient to enable total reflection.
  • the strip-shaped surfaces are coated with a light-reflecting layer.
  • the respective partial reflection surfaces can be inclined in such a way that only certain partial reflection surfaces are "visible" or can be illuminated by the respective light source.
  • the first partial reflection surfaces can be arranged in such a way that the second partial reflection surfaces are in the shadow of the first partial reflection surfaces when viewed from the first light source. Equally, the first partial reflection surfaces can also lie in the shadow of the first partial reflection surfaces from the point of view of the second light source.
  • individual partial reflection surfaces in particular the first and second partial reflection surfaces, have microstructures for the targeted influencing of the light distribution emitted by the partial reflection surfaces.
  • a collimator element for bundling the light in the direction of the reflector can be arranged at least between the reflector and the first and the second light source.
  • the collimator element is set up to direct light emitted by the light source in parallel in the direction of the reflector, in particular in the direction of the respective partial reflection surface.
  • At least one of the light sources preferably all light sources, includes at least one LED.
  • any other light sources for example laser light sources, halogen light sources, xenon light sources, etc., can of course also be provided.
  • a further aspect of the invention relates to a vehicle headlight, in particular a motor vehicle headlight, comprising a lighting device according to the invention and a cover pane, the lighting device being arranged in such a way that the back of the light sources faces the cover pane.
  • the light sources can be cooled particularly effectively, as a result of which their output and/or their service life can be increased.
  • the waste heat from the light source can be used to de-ice or defrost the cover pane.
  • FIG 1 shows a schematic representation of a first embodiment of a lighting device 1.
  • the lighting device 1 comprises a reflector 2 with a total reflection surface 2a for reflecting light, the reflection taking place at least partially in the direction of an optical axis x of the reflector 2, which in the present example with an axis x of a Cartesian coordinate system oriented to the right coincides with the other axes y and z.
  • the lighting device comprises a first light source 3' and a second light source 3" for radiating light onto the reflector 2, the first and the second light source at least in a direction normal to the optical axis x of the reflector 2 - in the present case therefore in the direction of the axes y and/or z - are spaced apart.
  • the total reflection surface 2a of the reflector 2 has a number of first partial reflection surfaces 2a' facing the first light source 3', which are set up to image the light radiated in from the first light source 3' in the form of at least one first light distribution of a first light function.
  • the overall reflection surface 2a of the reflector 2 also has a number of second partial reflection surfaces 2a" facing the second light source 3" which are set up to image the light radiated in from the second light source 3" in the form of a second light distribution of a second light function, with the first light distribution deviates from the second light distribution figure 1
  • the overall reflection surface 2a of the reflector 2 is at least partially composed of first and second partial reflection surfaces 2a' and 2a" arranged alternately next to one another, with the first and the second light source 3' and 3" being arranged in an area in front of the reflector 2 in such a way that their emitted light is at least partially radiated onto the reflector 2 counter to the positive direction (which corresponds to the forward direction of travel of the vehicle if the lighting device is used in a vehicle headlight) of the optical axis x of the reflector 2 .
  • the arrangement of the light sources 3' and 3" as well as the partial reflection surfaces 2a' and 2a” are designed in such a way that, for example, one of the following lighting functions can be implemented: daytime running lights, position lights, side marker lights, indicators, low beams, cornering lights, high beams, static cornering lights, etc
  • the overall reflection surface 2a is composed exclusively of first and second reflection surfaces 2a' and 2a" arranged in strips next to one another, with adjacent reflection surfaces adjoining and being connected to one another.
  • the light sources 3' and 3" are arranged transversely to the optical axis x. For example, they can be arranged at an angle of between 20° and 75° with respect to the optical axis x.
  • imaging optics 4 are also shown, which in the present example are designed as projection lenses and are arranged downstream of the reflector 2 for imaging the light reflected by the reflector 2, as indicated by exemplary light beams LS.
  • the reflector 2 is in accordance with the embodiment figure 1 designed as a separate optical component.
  • Figure 1a shows a section of a first partial reflection surface 2a' in a detailed illustration. It can be seen that the partial reflection area 2a' has microstructures 5 for the targeted influencing of the light distribution emitted by the partial reflection area 2a'. Equally or alternatively to this, such microstructures 5 can be arranged on other partial reflection surfaces or on the imaging optics 4 .
  • figure 2 shows a schematic representation of a further development of the first embodiment figure 1 . It shows by means of individual light beams how the first and/or second light source 3' or 3'' radiate individual light beams via the reflector 2 to a light sensor 8.
  • FIG 3 shows a second embodiment of a lighting device 1 according to the invention, in which the reflector 2 is formed in one piece with a light-conducting body 6 that includes the imaging optics 4 by the reflector 2 being formed on a light-reflecting end section 6a of the light-conducting body 6.
  • the first and second partial reflection surfaces 2a' or 2a" are designed, for example, as strip-shaped surfaces arranged next to one another on the surface of the end section 6a, with the first and second partial reflection surfaces 2a' or 2a" being inclined towards one another. Due to the inclination of the surfaces in relation to the by the light sources 3 'and 3' (which are preferably LEDs), the light can already under certain circumstances Reflection surfaces are totally reflected.
  • the partial reflection surfaces can also be coated with a light-reflecting layer, which can be applied, for example, by vapor deposition.
  • the imaging optics 4 can also have microstructures 5 for specifically influencing the light distribution emitted by the imaging optics 4, which Figure 3a as detail of figure 3 are shown.
  • the design of the partial reflection surfaces in the form of strips arranged next to one another is only an exemplary variant of their design. Other variants, such as a stepped structure, are also conceivable.
  • collimator elements 7 are shown, which are arranged between the reflector 2 and the first and the second light source 3' or 3" for bundling the light in the direction of the reflector 2.
  • the collimator elements 7 can be designed as separate components.
  • the collimator elements 7 also be designed in one piece with the light-conducting body 6.
  • the imaging optics 4 can be designed, for example, as a lens, but also as so-called “cushion optics", which consists of a large number of cushion-shaped structures arranged next to one another.
  • the first light source can assume a low beam function and the second light source can assume the turning light function.
  • the following combinations are given as examples, where pairs of combinations are connected with a slash "/" and different pairs are separated from each other by a semicolon ";” are separated: daytime running light / position light; daytime running light/side marker light; daytime running lights/indicators; flashing light / position light; flashing light / side marker light; low beam / cornering light; high beam / cornering light; low beam / static cornering light; static left cornering light/ static right cornering light; High/Low Beam Matrix Segment a / High/Low Beam Matrix Segment b.
  • figure 4 shows a sectional view of a vehicle headlight with a lighting device 1.
  • the light sources 3' and 3" are arranged in the vicinity of a cover plate 9 in the front area of the vehicle headlight.
  • the light sources e.g. laser or LED light sources
  • the light sources dissipate power mainly against the cover plate 9, whereby the heat can firstly be effectively conducted to the outside and secondly can be used to counteract fogging or icing of the cover pane and other cooling measures such as fans can be omitted.
  • figure 5 shows a detailed view of a beam path of a reflector 2 of the lighting device 1.
  • the first light source 3' to shine at first irradiation angles ⁇ ' and the second light source 3'' radiate at second angles of incidence ⁇ " onto the respective partial reflection surfaces 2a' or 2a", with each partial reflection surface 2a' or 2a" having an angle of inclination ⁇ ' or ⁇ " which corresponds to the respective angle of incidence ⁇ ' or ⁇ " of the unassigned light source 3" and 3', respectively, the angles being referenced to the optical axis of the reflector.
  • each partial reflection surface 2a' is assigned to the first light source 3', whereby due to the different spatial position of the individual partial reflection surfaces 2a' to one another, each partial reflection surface 2a' has a different angle ⁇ ' (each partial reflection surface 2a' is therefore at a different Angle of incidence ⁇ ′ and angle of inclination ⁇ ′ assigned—for a better overview, the angles were only provided with a single partial reflection surface 2a′ with reference symbols) in relation to the first light source 3′.
  • Each partial reflection surface 2a′ is inclined in such a way that it cannot be irradiated by the second light source 3′′.
  • the first partial reflection surface 2a′ which is shown in figure 5 assigned the reference symbol ⁇ ', is less inclined than the angle of incidence ⁇ " of the second light source 3". This prevents the relevant first partial reflection surface 2a' from being irradiated by the second light source 3". The same applies in an analogous manner to the second partial reflection surfaces 2a".

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

Description

Die Erfindung betrifft eine Leuchtvorrichtung für einen Kraftfahrzeugscheinwerfer, umfassend einen Reflektor mit einer Reflexionsgesamtfläche zur Reflexion von Licht zumindest teilweise in Richtung einer optischen Achse des Reflektors, eine erste und eine zweite Lichtquelle zur Einstrahlung von Licht auf den Reflektor, wobei die erste und die zweite Lichtquelle zumindest in einer Richtung normal zur optischen Achse des Reflektors voneinander beabstandet sind, wobei die Reflexionsgesamtfläche des Reflektors eine Anzahl von der ersten Lichtquelle zugewandten ersten Reflexionsteilflächen aufweist, die zur Abbildung des von der ersten Lichtquelle eingestrahlten Lichtes in Form zumindest einer ersten Lichtverteilung einer ersten Lichtfunktion eingerichtet sind, wobei die Reflexionsgesamtfläche des Reflektors eine Anzahl von der zweiten Lichtquelle zugewandten zweiten Reflexionsteilflächen aufweist, die zur Abbildung des von der zweiten Lichtquelle eingestrahlten Lichtes in Form einer zweiten Lichtverteilung einer zweiten Lichtfunktion eingerichtet sind.The invention relates to a lighting device for a motor vehicle headlight, comprising a reflector with a total reflection surface for reflecting light at least partially in the direction of an optical axis of the reflector, a first and a second light source for radiating light onto the reflector, the first and second light sources are spaced apart from one another at least in a direction normal to the optical axis of the reflector, the total reflection surface of the reflector having a number of first partial reflection surfaces facing the first light source, which are set up to image the light radiated in by the first light source in the form of at least one first light distribution of a first light function are, wherein the total reflection surface of the reflector has a number of second partial reflection surfaces facing the second light source, which are used to image the light radiated from the second light source in the form of a second n light distribution of a second light function are set up.

Ferner betrifft die Erfindung einen Fahrzeugscheinwerfer mit einer Leuchtvorrichtung.Furthermore, the invention relates to a vehicle headlight with a lighting device.

Die Patentdokumente DE10247980 A1 und DE102013202957 A1 offenbaren jeweils eine gattungsgemäße Leuchtvorrichtung für einen Kraftfahrzeug.The patent documents DE10247980 A1 and DE102013202957 A1 each disclose a generic lighting device for a motor vehicle.

Leuchtvorrichtungen der eingangs genannten Art sind z.B. aus Scheinwerfern bekannt, bei denen zwei Lichtquellen vor einer Reflektoranordnung befestigt sind, wobei die Reflektoranordnung unterschiedliche Bereiche aufweist, die zur Erfüllung unterschiedlicher Lichtfunktionen vorgesehen sind. So sind beispielsweise Scheinwerfer bekannt geworden, bei denen eine Abblendlichtquelle und eine Fernlichtquelle vor einer einstückigen Reflektoranordnung befestigt sind, wobei die Reflektoranordnung zur Erzeugung zweier unterschiedlicher Lichtverteilungen, nämlich einer Abblendlichtverteilung und einer Fernlichtverteilung, zwei unterschiedliche Reflektorbereiche aufweist. Bei der genannten Anordnung ist es vor allem wichtig, ein Übersprechen von dem Abblendlicht hin zu dem Fernlicht zu vermeiden, was durch entsprechende konstruktive Maßnahmen erreicht werden kann. Eine räumliche sowie bauliche Trennung einzelner Reflektorbereiche zur Umsetzung unterschiedlicher Lichtverteilungen führt zu Beschränkungen hinsichtlich der Baugröße der Leuchtvorrichtung, womit ebenso Beschränkungen bei dessen Design einhergehen.Lighting devices of the type mentioned at the outset are known, for example, from headlights in which two light sources are attached in front of a reflector arrangement, the reflector arrangement having different areas which are intended to fulfill different lighting functions. For example, headlights have become known in which a low-beam light source and a high-beam light source are attached in front of a one-piece reflector arrangement, the reflector arrangement having two different reflector areas to produce two different light distributions, namely a low-beam light distribution and a high-beam light distribution. In the arrangement mentioned, it is particularly important to avoid crosstalk from the low beam to the high beam, which can be achieved by appropriate design measures. A spatial and structural separation of individual reflector areas to implement different light distributions leads to limitations in terms of the size of the lighting device, which is also associated with limitations in its design.

Eine Aufgabe der Erfindung besteht daher darin, eine Leuchtvorrichtung zu schaffen, die in Ihrer Form weitgehend frei gestaltet werden kann und zum Erzeugen zumindest zweier voneinander unterschiedlicher Lichtverteilungen geeignet ist.One object of the invention is therefore to create a lighting device that can be designed largely freely in terms of its shape and is suitable for generating at least two different light distributions.

Diese Aufgabe wird mit einer Leuchtvorrichtung der eingangs genannten Art gelöst, bei der erfindungsgemäß die Reflexionsgesamtfläche des Reflektors zumindest teilweise aus abwechselnd nebeneinander angeordneten ersten und zweiten Reflexionsteilflächen zusammengesetzt ist, wobei die erste und die zweite Lichtquelle dergestalt in einem vor dem Reflektor liegenden Bereich angeordnet sind, dass ihr abgestrahltes Licht zumindest teilweise entgegen der Richtung der optischen Achse des Reflektors auf den Reflektor gestrahlt wird. Die erfindungsgemäße Leuchtvorrichtung unterliegt keinen besonderen Beschränkungen hinsichtlich ihrer Baugröße. Durch das Zusammensetzen der Reflexionsgesamtfläche aus ersten und zweiten Reflexionsteilflächen ist es möglich zwei oder mehr Lichtfunktionen mittels eines einzelnen Reflektors sowie den Reflektor zugeordneter Lichtquellen zu realisieren. Die Reflexionsgesamtfläche kann dabei im Vergleich zu herkömmlichen Reflektoren deutlich vergrößert werden. Zudem ermöglicht die Anordnung der Lichtquellen vor dem Reflektor insbesondere im Falle des Einsatzes für einen Fahrzeugscheinwerfer eine verbesserte Kühlung der Lichtquellen, da der Bereich vor den Reflektor beispielsweise mit einer Abdeckscheibe abgeschlossen sein kann, über die von den Lichtquellen abgegebene Wärme an die Umgebung abgeben werden kann.This object is achieved with a lighting device of the type mentioned at the outset, in which, according to the invention, the total reflection surface of the reflector is at least partially composed of first and second partial reflection surfaces arranged alternately next to one another, the first and second light sources being arranged in a region in front of the reflector in such a way that that their radiated light is at least partially radiated against the direction of the optical axis of the reflector onto the reflector. The lighting device according to the invention is not subject to any particular restrictions in terms of its size. By assembling the overall reflection surface from first and second partial reflection surfaces, it is possible to implement two or more light functions by means of a single reflector and light sources assigned to the reflector. The total reflection area can be significantly increased compared to conventional reflectors. In addition, the arrangement of the light sources in front of the reflector enables improved cooling of the light sources, especially when used for a vehicle headlight, since the area in front of the reflector can be closed off with a cover plate, for example, through which the heat emitted by the light sources can be emitted to the environment .

Zwischen den ersten und zweiten Reflexionsteilflächen bzw. umgekehrt können zudem weitere Reflexionsteilflächen angeordnet sein. Unter dem Ausdruck "optische Achse des Reflektors" wird eine optische Achse verstanden, die in Hauptabstrahlrichtung des Reflektors orientiert ist. Die erste und zweite Lichtfunktion müssen nicht zwingend voneinander unterschiedlich sein. Allerdings sind die Lichtverteilungen, die durch die jeweilige Lichtquelle sowie die zugeordnete Reflexionsteilfläche erzeugt werden, voneinander unterschiedlich. Das soll bedeuten, dass beispielsweise die erste Lichtverteilung und die zweite Lichtverteilung jeweils einen Teil einer Gesamtlichtverteilung ausbilden können. So ist es beispielsweise denkbar, dass die erste Lichtverteilung und die zweite Lichtverteilung gemeinsam eine Abblendlichtverteilung ergeben - die erste Lichtverteilung und die zweite Lichtverteilung also für sich genommen Teillichtverteilungen darstellen.In addition, further partial reflection surfaces can be arranged between the first and second partial reflection surfaces or vice versa. The expression "optical axis of the reflector" is understood to mean an optical axis which is oriented in the main emission direction of the reflector. The first and second light functions do not necessarily have to be different from one another. However, the light distributions that are generated by the respective light source and the associated partial reflection surface are different from one another. This should mean that, for example, the first light distribution and the second light distribution can each form part of an overall light distribution. For example, it is conceivable that the first light distribution and the second light distribution together result in a low beam distribution—thus the first light distribution and the second light distribution represent partial light distributions taken on their own.

Unter dem Ausdruck "eine Anzahl von" wird im Rahmen dieser Offenbarung - sofern nicht anders angegeben - eine Anzahl verstanden, die zumindest zwei beträgt und zwei, drei, vier oder mehr, insbesondere sechs, acht, zehn, zwölf oder mehr als zwölf betragen kann. Der Fachmann ist in Anbetracht dieser Offenbarung in der Lage, die Anzahl der jeweiligen Elemente einem Anwendungszweck entsprechend zu wählen. Der Ausdruck "Reflexionsgesamtfläche" bezeichnet die gesamte Fläche des Reflektors, die zur Reflexion von Licht der Lichtquellen eingerichtet ist.In the context of this disclosure, the term “a number of”—unless otherwise stated—is understood to mean a number that is at least two and can be two, three, four or more, in particular six, eight, ten, twelve or more than twelve . Those skilled in the art, in view of this disclosure, will be able to select the number of particular elements to suit an application. The expression "total reflection area" refers to the entire area of the reflector that is set up to reflect light from the light sources.

Insbesondere kann vorgesehen sein, dass die erste Lichtfunktion und die zweite Lichtfunktion ausgewählt sind aus der Gruppe: Tagfahrlicht, Positionslicht, Seitenmarkierungslicht, Fahrtrichtungsanzeigelicht, Abblendlicht, Abbiegelicht, Fernlicht, statisches Kurvenlicht oder Abbiegelicht. Dem Fachmann sind diese Lichtfunktionen bekannt, wobei die zugehörigen Lichtverteilungen in den einschlägigen Richtlinien sowie Normen festgelegt sind. Beispielhaft wird an dieser Stelle auf die Regelung Nr. 123 der Wirtschaftskommission für Europa der Vereinten Nationen (UN/ECE) - Einheitliche Bedingungen für die Genehmigung von adaptiven Frontbeleuchtungssystemen (AFS) für Kraftfahrzeuge sowie die Regelung Nr. 48 der Wirtschaftskommission der Vereinten Nationen für Europa (UN/ECE) - Einheitliche Bedingungen für die Genehmigung der Fahrzeuge hinsichtlich des Anbaus der Beleuchtungs- und Lichtsignaleinrichtungen verwiesen. Zudem kann es vorgesehen sein, dass die erste und die zweite Lichtfunktion voneinander abweichen, wobei prinzipiell sämtliche Permutationen bzw. Kombinationen der genannten Funktionen denkbar sind. Insbesondere die folgenden Kombinationen lassen sich besonders vorteilhaft umsetzen: Tagfahrlicht / Positionslicht; Tagfahrlicht/Seitenmarkierungslicht; Tagfahrlicht/Fahrtrichtungsanzeigelicht bzw. Blinklicht; Fahrtrichtungsanzeigelicht / Positionslicht; Fahrtrichtungsanzeigelicht / Seitenmarkierungslicht; Abblendlicht / Abbiegelicht; Fernlicht / Abbiegelicht; Abblendlicht / statisches Kurvenlicht; statisches Abbiegelicht links/ statisches Abbiegelicht rechts; oder auch bestimmte Kombination von einzelnen Segmenten einer matrixförmig segmentierten Leuchtvorrichtung, bei der die durch die Leuchtvorrichtung erzeugte Lichtverteilung durch einzelne Segmente zusammengesetzt ist, die z.B. wie folgt kombiniert werden könnten: Fern-/Abblendlicht-Matrixsegment a / Fern-/Abblendlicht-Matrixsegment.In particular, it can be provided that the first light function and the second light function are selected from the group: daytime running lights, position lights, side marker lights, direction indicator lights, low beams, cornering lights, high beams, static cornering lights or cornering lights. These light functions are known to those skilled in the art, with the associated light distributions being specified in the relevant guidelines and standards. As an example, reference is made here to Regulation No. 123 of the United Nations Economic Commission for Europe (UN/ECE) - Uniform conditions for the approval of adaptive front lighting systems (AFS) for motor vehicles and Regulation No. 48 of the United Nations Economic Commission for Europe (UN/ECE) - Uniform conditions for the approval of vehicles with regard to the attachment of lighting and light signaling devices. In addition, it can be provided that the first and the second light function deviate from one another, with all permutations or combinations of the functions mentioned being conceivable in principle. The following combinations in particular can be implemented particularly advantageously: daytime running lights/position lights; daytime running light/side marker light; daytime running light/direction indicator light or flashing light; direction indicator light / position light; Direction indicator light / side marker light; low beam / cornering light; high beam / cornering light; low beam / static cornering light; static left cornering light/ static right cornering light; or also a specific combination of individual segments of a matrix-shaped segmented lighting device, in which the light distribution generated by the lighting device is composed of individual segments that could be combined as follows, for example: high beam/low beam matrix segment a / high beam/low beam matrix segment.

Zudem kann vorgesehen sein, dass die ersten und/oder zweiten Reflexionsteilflächen Mikrostrukturen aufweisen, die zur Ablenkung von Licht hin zu einer dritten Lichtverteilung (ausgewählt von den zuvor angeführten Lichtverteilungen) eingerichtet sind.Provision can also be made for the first and/or second partial reflection surfaces to have microstructures which are set up to deflect light towards a third light distribution (selected from the light distributions listed above).

In einer besonders günstigen und einfachen Ausführungsform der Erfindung kann vorgesehen sein, dass die Gesamtreflexionsfläche ausschließlich aus nebeneinander angeordneten ersten und zweiten Reflexionsteilflächen besteht.In a particularly favorable and simple embodiment of the invention, it can be provided that the overall reflection surface consists exclusively of first and second partial reflection surfaces arranged next to one another.

Alternativ dazu kann vorgesehen sein, dass die Gesamtreflexionsfläche zumindest eine dritte Reflexionsteilfläche, vorzugsweise eine Anzahl dritter Reflexionsteilflächen, zur Erzeugung einer weiteren Lichtverteilung aufweist.As an alternative to this, it can be provided that the overall reflection surface has at least one third partial reflection surface, preferably a number of third partial reflection surfaces, for generating a further light distribution.

Insbesondere kann vorgesehen sein, dass die zumindest eine dritte Reflexionsteilfläche der ersten und/oder der zweiten Lichtquelle zugewandt ist.In particular, it can be provided that the at least one third partial reflection surface faces the first and/or the second light source.

Auch kann vorgesehen sein, dass die Leuchtvorrichtung eine dritte Lichtquelle aufweist, und die dritte Reflexionsteilfläche der dritten Lichtquelle zugewandt ist.Provision can also be made for the lighting device to have a third light source, and for the third partial reflection area to face the third light source.

Ergänzend oder alternativ dazu kann vorgesehen sein, dass die Leuchtvorrichtung einen Lichtsensor zur Überprüfung der Lichtfunktion zumindest einer der Lichtquellen aufweist, wobei die durch die zumindest eine dritte Reflexionsteilfläche erzeugte Lichtverteilung dergestalt ausgebildet ist und der Lichtsensor dergestalt angeordnet ist, dass die durch die zumindest eine dritte Reflexionsfläche erzeugte Lichtverteilung auf den Lichtsensor einstrahlt. Dieser Lichtsensor kann beispielsweise mit einer Auswerteeinheit verbunden sein, die den Zustand der Leuchtvorrichtung überwacht und bei Rückschluss auf einen fehlerhaften Zustand entsprechende Maßnahmen wie beispielsweise eine Fehleranzeige setzt.In addition or as an alternative to this, it can be provided that the lighting device has a light sensor for checking the light function of at least one of the light sources, the light distribution generated by the at least one third partial reflection surface being designed in such a way and the light sensor being arranged in such a way that the light emitted by the at least one third Reflection surface generated light distribution radiates onto the light sensor. This light sensor can be connected, for example, to an evaluation unit that monitors the state of the lighting device and, if a faulty state is inferred, takes appropriate measures, such as an error display.

Zur Implementierung einer dritten Lichtfunktion kann vorgesehen sein, dass die durch die zumindest eine dritte Reflexionsteilfläche erzeugte Lichtverteilung eine Lichtverteilung einer Lichtfunktion ausgewählt aus der folgenden Gruppe ist: Tagfahrlicht, Positionslicht, Seitenmarkierungslicht, Fahrtrichtungsanzeigelicht, Abblendlicht, Abbiegelicht, Fernlicht, statisches Kurvenlicht, Abbiegelicht.To implement a third light function, it can be provided that the light distribution generated by the at least one third partial reflection surface is a light distribution of a light function selected from the following group: daytime running lights, position lights, side marker lights, direction indicator lights, low beams, cornering lights, high beams, static cornering lights, cornering lights.

In einer besonders zweckmäßigen Ausgestaltung der Erfindung kann vorgesehen sein, dass einzelne Reflexionsteilflächen, insbesondere die ersten und zweiten Reflexionsteilflächen, streifenförmig ausgebildet und nebeneinander angeordnet sind, wobei nebeneinander angeordnete Streifen miteinander verbunden sind. Die Verbindung der Streifen kann entweder direkt miteinander oder auch über weitere dazwischenliegende Streifen, beispielsweise Streifen einer dritten Reflexionsteilfläche, erfolgen.In a particularly expedient embodiment of the invention, it can be provided that individual partial reflection surfaces, in particular the first and second partial reflection surfaces, are formed in strips and arranged next to one another, strips arranged next to one another being connected to one another. The connection of the strips can either directly with one another or also via further intervening strips, for example strips of a third partial reflecting surface.

Um ein Übersprechen des von den einzelnen Lichtquellen abgestrahlten Lichts zu verhindern, kann vorgesehen sein, dass die erste Lichtquelle unter ersten Einstrahlwinkeln und die zweite Lichtquelle unter zweiten Einstrahlwinkeln auf die jeweiligen Reflexionsteilflächen strahlen, wobei jede Reflexionsteilfläche einen Neigungswinkel aufweist, der den jeweiligen Einstrahlwinkel der nicht zugeordneten Lichtquelle übertrifft, wobei der Winkel auf die optische Achse des Reflektors bezogen sind. Dabei können die Lichtquellen beispielsweise in einem Winkel zwischen 20° und 75° in Bezug auf die optische Achse angeordnet sein. Die Anordnung Quer zur optischen Achse des Reflektors erlaubt eine kurze Bauweise der Leuchtvorrichtung in Richtung der optischen Achse des Reflektors.In order to prevent crosstalk of the light emitted by the individual light sources, it can be provided that the first light source radiates at first angles of incidence and the second light source at second angles of incidence onto the respective partial reflection surfaces, with each partial reflection surface having an angle of inclination which does not correspond to the respective angle of incidence of the associated light source exceeds, wherein the angle are related to the optical axis of the reflector. In this case, the light sources can be arranged, for example, at an angle of between 20° and 75° in relation to the optical axis. The arrangement transverse to the optical axis of the reflector allows a short construction of the lighting device in the direction of the optical axis of the reflector.

Erfindungsgemäß ist vorgesehen, dass die Leuchtvorrichtung eine Abbildungsoptik aufweist, die dem Reflektor zur Abbildung zumindest eines Teils des von dem Reflektor reflektierten Lichtes nachgelagert ist. Die Abbildungsoptik kann als Projektionslinse oder beispielsweise als Kissenoptik ausgeführt sein.According to the invention, it is provided that the lighting device has imaging optics, which are arranged downstream of the reflector for imaging at least part of the light reflected by the reflector. The imaging optics can be designed as a projection lens or, for example, as a pillow optics.

Zudem kann vorgesehen sein, dass die Abbildungsoptik Mikrostrukturen zur gezielten Beeinflussung der durch die Abbildungsoptik abgestrahlten Lichtverteilung aufweist. Unter dem Ausdruck "Mikrostrukturen" werden Vorsprünge oder Vertiefungen an der Oberfläche des jeweiligen optischen Bauteils verstanden, deren Abmessung maximal einige Zehntelmillimeter beträgt und die dazu geeignet sind, das durch das jeweilige optische Element abgestrahlte Lichtbild zu beeinflussen. So können die Mikrostrukturen beispielsweise dazu eingerichtet sein, Licht gezielt in eine bestimmte Richtung abzulenken. Alternativ dazu können diese ebenso zur Erzeugung einer diffusen Abstrahlung eingerichtet sein.In addition, it can be provided that the imaging optics have microstructures for the targeted influencing of the light distribution emitted by the imaging optics. The term "microstructures" is understood to mean projections or depressions on the surface of the respective optical component, the dimensions of which are at most a few tenths of a millimeter and which are suitable for influencing the light image emitted by the respective optical element. For example, the microstructures can be set up to deflect light in a targeted manner in a specific direction. As an alternative to this, they can also be set up to generate diffuse radiation.

Erfindungsgemäß ist vorgesehen, dass der Reflektor einstückig mit einem lichtleitenden Körper ausgebildet ist, der die Abbildungsoptik umfasst, indem der Reflektor an einem lichtreflektierenden Endabschnitt des lichtleitenden Körpers ausgebildet ist. Diese Ausführung ist somit besonders kompakt, wobei durch die einstückige Ausführung eine durch Wärmedehnung oder mechanische Erschütterungen verursachte Fehlpositionierung des Reflektors in Bezug auf die Abbildungsoptik weitgehend verhindert werden kann.According to the invention, it is provided that the reflector is formed in one piece with a light-conducting body, which comprises the imaging optics, in that the reflector is formed on a light-reflecting end section of the light-conducting body. This design is therefore particularly compact, with the one-piece design caused by thermal expansion or mechanical shock incorrect positioning of the reflector in relation to the imaging optics can be largely prevented.

Dabei kann es besonders günstig sein, wenn einzelne Reflexionsteilflächen, insbesondere die ersten und zweiten Reflexionsteilflächen, als nebeneinander angeordnete streifenförmige Flächen an der Oberfläche des Endabschnitts ausgebildet sind, wobei die ersten und die zweiten Reflexionsteilflächen zueinander geneigt sind. In Abhängigkeit von dem Winkel, unter dem das Licht auf die jeweiligen Reflexionsteilflächen einfällt, kann die Neigung der Reflexionsteilflächen in Bezug zu dem einfallenden Licht bereits ausreichend sein, um eine Totalreflexion zu ermöglichen. Sofern die Neigung der Flächen in Bezug auf die Lichtquelle nicht dazu ausreicht eine Totalreflexion zu ermöglichen, kann es günstig sein, wenn die streifenförmigen Flächen mit einer lichtreflektierenden Schicht beschichtet sind. Insbesondere können die jeweiligen Reflexionsteilflächen dergestalt geneigt sein, dass nur bestimmte Reflexionsteilflächen für die jeweilige Lichtquelle "sichtbar" bzw. anstrahlbar sind. So können beispielweise die ersten Reflexionsteilflächen so angeordnet sein, dass die zweiten Reflexionsteilflächen aus Sicht der ersten Lichtquelle im Schatten der ersten Reflexionsteilflächen liegen. Gleichermaßen können auch die ersten Reflexionsteilflächen aus Sicht der zweiten Lichtquelle im Schatten der ersten Reflexionsteilflächen liegen.It can be particularly favorable if individual partial reflection surfaces, in particular the first and second partial reflection surfaces, are designed as strip-shaped surfaces arranged next to one another on the surface of the end section, with the first and second partial reflection surfaces being inclined towards one another. Depending on the angle at which the light strikes the respective partial reflection surfaces, the inclination of the partial reflection surfaces in relation to the incident light can already be sufficient to enable total reflection. If the inclination of the surfaces in relation to the light source is not sufficient to enable total reflection, it can be advantageous if the strip-shaped surfaces are coated with a light-reflecting layer. In particular, the respective partial reflection surfaces can be inclined in such a way that only certain partial reflection surfaces are "visible" or can be illuminated by the respective light source. For example, the first partial reflection surfaces can be arranged in such a way that the second partial reflection surfaces are in the shadow of the first partial reflection surfaces when viewed from the first light source. Equally, the first partial reflection surfaces can also lie in the shadow of the first partial reflection surfaces from the point of view of the second light source.

Zudem kann vorgesehen sein, dass einzelne Reflexionsteilflächen, insbesondere die ersten und zweiten Reflexionsteilflächen, Mikrostrukturen zur gezielten Beeinflussung der durch die Reflexionsteilflächen abgestrahlten Lichtverteilung aufweisen.In addition, it can be provided that individual partial reflection surfaces, in particular the first and second partial reflection surfaces, have microstructures for the targeted influencing of the light distribution emitted by the partial reflection surfaces.

Zur besonders effizienten Einstrahlung von Licht auf den Reflektor bzw. auf die jeweiligen Reflexionsteilflächen kann vorgesehen sein, dass zumindest zwischen dem Reflektor und der ersten und der zweiten Lichtquelle jeweils ein Kollimatorelement zur Bündelung des Lichtes in Richtung des Reflektors angeordnet ist. Das Kollimatorelement ist dazu eingerichtet, von der Lichtquelle abgestrahltes Licht parallel in Richtung des Reflektors, insbesondere in Richtung der jeweiligen Reflexionsteilfläche, zu richten.For particularly efficient irradiation of light onto the reflector or onto the respective partial reflection surfaces, a collimator element for bundling the light in the direction of the reflector can be arranged at least between the reflector and the first and the second light source. The collimator element is set up to direct light emitted by the light source in parallel in the direction of the reflector, in particular in the direction of the respective partial reflection surface.

Besonders günstig kann es sein, wenn zumindest eine der Lichtquellen, vorzugsweise alle Lichtquellen, zumindest eine LED umfasst. Ergänzend oder alternativ dazu können natürlich auch beliebige andere Lichtquellen, beispielsweise Laserlichtquellen, Halogenlichtquellen, Xenonlichtquellen etc. vorgesehen sein.It can be particularly favorable if at least one of the light sources, preferably all light sources, includes at least one LED. In addition or as an alternative to this, any other light sources, for example laser light sources, halogen light sources, xenon light sources, etc., can of course also be provided.

Ein weiterer Aspekt der Erfindung betrifft einen Fahrzeugscheinwerfer, insbesondere einen Kraftfahrzeugscheinwerfer, umfassend eine erfindungsgemäße Leuchtvorrichtung sowie eine Abdeckscheibe, wobei die Leuchtvorrichtung dergestalt angeordnet ist, dass die Rückseite der Lichtquellen der Abdeckscheibe zugewandt ist. Damit können die Lichtquellen besonders effektiv gekühlt werden, wodurch ihre Leistung und/oder ihre Lebensdauer erhöht werden kann. Außerdem kann die Abwärme der Lichtquelle zum Enteisen bzw. Enttauen der Abdeckscheibe verwendet werden.A further aspect of the invention relates to a vehicle headlight, in particular a motor vehicle headlight, comprising a lighting device according to the invention and a cover pane, the lighting device being arranged in such a way that the back of the light sources faces the cover pane. In this way, the light sources can be cooled particularly effectively, as a result of which their output and/or their service life can be increased. In addition, the waste heat from the light source can be used to de-ice or defrost the cover pane.

Die Erfindung ist im Folgenden anhand beispielhafter und nicht einschränkender Ausführungsformen näher erläutert, die in den Figuren veranschaulicht sind. Darin zeigt

  • Figur 1 eine schematische Darstellung einer ersten Ausführungsform einer Leuchtvorrichtung 1,
  • Figur 1a eine Detaildarstellung einer Mikrostruktur der Leuchtvorrichtung gemäß Figur 1,
  • Figur 2 eine schematische Darstellung einer Weiterbildung der ersten Ausführungsform gemäß Figur 1,
  • Figur 3 eine zweite Ausführungsform einer erfindungsgemäßen Leuchtvorrichtung,
  • Figur 3a eine Detaildarstellung einer Mikrostruktur der Leuchtvorrichtung gemäß Figur 3,
  • Figur 4 eine Schnittdarstellung eines Fahrzeugscheinwerfers mit einer Leuchtvorrichtung,
  • und Figur 5 eine Detaildarstellung eines Strahlenganges eines Reflektors der Leuchtvorrichtung.
The invention is explained in more detail below on the basis of exemplary and non-limiting embodiments which are illustrated in the figures. In it shows
  • figure 1 a schematic representation of a first embodiment of a lighting device 1,
  • Figure 1a a detailed representation of a microstructure of the lighting device according to FIG figure 1 ,
  • figure 2 according to a schematic representation of a further development of the first embodiment figure 1 ,
  • figure 3 a second embodiment of a lighting device according to the invention,
  • Figure 3a a detailed representation of a microstructure of the lighting device according to FIG figure 3 ,
  • figure 4 a sectional view of a vehicle headlight with a lighting device,
  • and figure 5 a detailed view of a beam path of a reflector of the lighting device.

In den folgenden Figuren bezeichnen - sofern nicht anders angegeben - gleiche Bezugszeichen gleiche Merkmale.Unless otherwise stated, the same reference symbols denote the same features in the following figures.

Figur 1 zeigt eine schematische Darstellung einer ersten Ausführungsform einer Leuchtvorrichtung 1. Die Leuchtvorrichtung 1 umfasst einen Reflektor 2 mit einer Reflexionsgesamtfläche 2a zur Reflexion von Licht, wobei die Reflexion zumindest teilweise in Richtung einer optischen Achse x des Reflektors 2 erfolgt, die im vorliegenden Beispiel mit einer Achse x eines rechtswendig orientierten kartesischen Koordinatensystems mit den weiteren Achsen y und z zusammenfällt. Ferner umfasst die Leuchtvorrichtung eine erste Lichtquelle 3' sowie eine zweite Lichtquelle 3" zur Einstrahlung von Licht auf den Reflektor 2, wobei die erste und die zweite Lichtquelle zumindest in einer Richtung normal zur optischen Achse x des Reflektors 2 - im vorliegenden Fall daher in Richtung der Achsen y und/oder z - voneinander beabstandet sind. figure 1 shows a schematic representation of a first embodiment of a lighting device 1. The lighting device 1 comprises a reflector 2 with a total reflection surface 2a for reflecting light, the reflection taking place at least partially in the direction of an optical axis x of the reflector 2, which in the present example with an axis x of a Cartesian coordinate system oriented to the right coincides with the other axes y and z. Furthermore, the lighting device comprises a first light source 3' and a second light source 3" for radiating light onto the reflector 2, the first and the second light source at least in a direction normal to the optical axis x of the reflector 2 - in the present case therefore in the direction of the axes y and/or z - are spaced apart.

Die Reflexionsgesamtfläche 2a des Reflektors 2 weist eine Anzahl von der ersten Lichtquelle 3' zugewandten ersten Reflexionsteilflächen 2a' auf, die zur Abbildung des von der ersten Lichtquelle 3' eingestrahlten Lichtes in Form zumindest einer ersten Lichtverteilung einer ersten Lichtfunktion eingerichtet sind. Die Reflexionsgesamtfläche 2a des Reflektors 2 weist zudem eine Anzahl von der zweiten Lichtquelle 3" zugewandten zweiten Reflexionsteilflächen 2a" auf, die zur Abbildung des von der zweiten Lichtquelle 3" eingestrahlten Lichtes in Form einer zweiten Lichtverteilung einer zweiten Lichtfunktion eingerichtet sind, wobei die erste Lichtverteilung von der zweiten Lichtverteilung abweicht. Wie aus Figur 1 ersichtlich, ist Reflexionsgesamtfläche 2a des Reflektors 2 zumindest teilweise aus abwechselnd nebeneinander angeordneten ersten und zweiten Reflexionsteilflächen 2a' und 2a" zusammengesetzt, wobei die erste und die zweite Lichtquelle 3' und 3" dergestalt in einem vor dem Reflektor 2 liegenden Bereich angeordnet sind, dass ihr abgestrahltes Licht zumindest teilweise entgegen der positiven Richtung (die im Falle der Verwendung der Leuchtvorrichtung in einem Fahrzeugscheinwerfer mit der Vorwärtsfahrtrichtung des Fahrzeugs übereinstimmt) der optischen Achse x des Reflektors 2 auf den Reflektor 2 gestrahlt wird.The total reflection surface 2a of the reflector 2 has a number of first partial reflection surfaces 2a' facing the first light source 3', which are set up to image the light radiated in from the first light source 3' in the form of at least one first light distribution of a first light function. The overall reflection surface 2a of the reflector 2 also has a number of second partial reflection surfaces 2a" facing the second light source 3" which are set up to image the light radiated in from the second light source 3" in the form of a second light distribution of a second light function, with the first light distribution deviates from the second light distribution figure 1 As can be seen, the overall reflection surface 2a of the reflector 2 is at least partially composed of first and second partial reflection surfaces 2a' and 2a" arranged alternately next to one another, with the first and the second light source 3' and 3" being arranged in an area in front of the reflector 2 in such a way that their emitted light is at least partially radiated onto the reflector 2 counter to the positive direction (which corresponds to the forward direction of travel of the vehicle if the lighting device is used in a vehicle headlight) of the optical axis x of the reflector 2 .

Die Anordnung der Lichtquellen 3' und 3" sowie die Reflexionsteilflächen 2a' und 2a" sind so ausgestaltet, dass beispielsweise jeweils eine der folgenden Lichtfunktionen umgesetzt werden können: Tagfahrlicht, Positionslicht, Seitenmarkierungslicht, Blinklicht, Abblendlicht, Abbiegelicht, Fernlicht, statisches Kurvenlicht, etc. In der Ausführungsform gemäß Figur 1 ist die Gesamtreflexionsfläche 2a ausschließlich aus nebeneinander angeordneten streifenförmig ausgebildeten ersten und zweiten Reflexionsflächen 2a' bzw. 2a" zusammengesetzt, wobei benachbarte Reflexionsflächen aneinander angrenzen und miteinander verbunden sind. Um einen möglichsten kompakten (kurzen) Aufbau der Leuchtvorrichtung in Richtung der x-Achse zu ermöglichen, kann vorgesehen sein, dass die Lichtquellen 3' und 3" quer zur optischen Achse x angeordnet sind. Beispielsweise können sie in einem Winkel zwischen 20° und 75° in Bezug auf die optische Achse x angeordnet sein.The arrangement of the light sources 3' and 3" as well as the partial reflection surfaces 2a' and 2a" are designed in such a way that, for example, one of the following lighting functions can be implemented: daytime running lights, position lights, side marker lights, indicators, low beams, cornering lights, high beams, static cornering lights, etc In the embodiment according to FIG figure 1 is the overall reflection surface 2a is composed exclusively of first and second reflection surfaces 2a' and 2a" arranged in strips next to one another, with adjacent reflection surfaces adjoining and being connected to one another. In order to enable the most compact (short) construction of the lighting device possible in the direction of the x-axis, it can be provided that the light sources 3' and 3" are arranged transversely to the optical axis x. For example, they can be arranged at an angle of between 20° and 75° with respect to the optical axis x.

In Figur 1 ist zudem eine Abbildungsoptik 4 dargestellt, die im vorliegenden Beispiel als Projektionslinse ausgeführt ist und dem Reflektor 2 zur Abbildung des von dem Reflektor 2 reflektierten Lichtes nachgelagert ist, wie durch beispielhafte Lichtstrahlen LS angedeutet ist. Der Reflektor 2 ist in der Ausführungsform gemäß Figur 1 als separates optisches Bauteil ausgebildet.In figure 1 imaging optics 4 are also shown, which in the present example are designed as projection lenses and are arranged downstream of the reflector 2 for imaging the light reflected by the reflector 2, as indicated by exemplary light beams LS. The reflector 2 is in accordance with the embodiment figure 1 designed as a separate optical component.

Figur 1a zeigt einen Ausschnitt einer ersten Reflexionsteilfläche 2a' in einer Detaildarstellung. Darin ist erkennbar, dass die Reflexionsteilfläche 2a' Mikrostrukturen 5 zur gezielten Beeinflussung der durch die Reflexionsteilfläche 2a' abgestrahlten Lichtverteilung aufweist. Gleichermaßen oder alternativ dazu können solche Mikrostrukturen 5 an anderen Reflexionsteilflächen oder an der Abbildungsoptik 4 angeordnet sein. Figure 1a shows a section of a first partial reflection surface 2a' in a detailed illustration. It can be seen that the partial reflection area 2a' has microstructures 5 for the targeted influencing of the light distribution emitted by the partial reflection area 2a'. Equally or alternatively to this, such microstructures 5 can be arranged on other partial reflection surfaces or on the imaging optics 4 .

Figur 2 zeigt eine schematische Darstellung einer Weiterbildung der ersten Ausführungsform gemäß Figur 1. Darin ist mittels einzelnen Lichtstrahlen dargestellt, wie die erste und/oder zweite Lichtquelle 3' bzw. 3" einzelne Lichtstrahlen über den Reflektor 2 hin zu einem Lichtsensor 8 strahlen. figure 2 shows a schematic representation of a further development of the first embodiment figure 1 . It shows by means of individual light beams how the first and/or second light source 3' or 3'' radiate individual light beams via the reflector 2 to a light sensor 8.

Figur 3 zeigt eine zweite Ausführungsform einer erfindungsgemäßen Leuchtvorrichtung 1, bei der der Reflektor 2 einstückig mit einem lichtleitenden Körper 6 ausgebildet ist, der die Abbildungsoptik 4 umfasst, indem der Reflektor 2 an einem lichtreflektierenden Endabschnitt 6a des lichtleitenden Körpers 6 ausgebildet ist. Auch in dieser Ausführungsform sind die ersten und zweiten Reflexionsteilflächen 2a' bzw. 2a" beispielhaft als nebeneinander angeordnete streifenförmige Flächen an der Oberfläche des Endabschnitts 6a ausgebildet, wobei die ersten und die zweiten Reflexionsteilflächen 2a' bzw. 2a" zueinander geneigt sind. Durch die Neigung der Flächen in Bezug auf das durch die Lichtquellen 3' und 3" (bei denen es sich vorzugsweise um LEDs handelt) kann das Licht bereits unter Umständen an den Reflexionsteilflächen totalreflektiert werden. Sollte die Neigung hierzu nicht ausreichen, so können die Reflexionsteilflächen ebenso mit einer lichtreflektierenden Schicht beschichtet sein, die beispielsweise durch Bedampfung aufgebracht werden kann. Auch kann die Abbildungsoptik 4 Mikrostrukturen 5 zur gezielten Beeinflussung der durch die Abbildungsoptik 4 abgestrahlten Lichtverteilung aufweisen, die in Figur 3a als Detail der Figur 3 dargestellt sind. Die Auslegung der Reflexionsteilflächen in Form von nebeneinander angeordneten Streifen ist nur eine beispielhafte Variante ihrer Ausgestaltung. Ebenso sind andere Varianten wie z.B. ein stufenförmiger Aufbau denkbar. figure 3 shows a second embodiment of a lighting device 1 according to the invention, in which the reflector 2 is formed in one piece with a light-conducting body 6 that includes the imaging optics 4 by the reflector 2 being formed on a light-reflecting end section 6a of the light-conducting body 6. In this embodiment too, the first and second partial reflection surfaces 2a' or 2a" are designed, for example, as strip-shaped surfaces arranged next to one another on the surface of the end section 6a, with the first and second partial reflection surfaces 2a' or 2a" being inclined towards one another. Due to the inclination of the surfaces in relation to the by the light sources 3 'and 3' (which are preferably LEDs), the light can already under certain circumstances Reflection surfaces are totally reflected. If the inclination is not sufficient for this, the partial reflection surfaces can also be coated with a light-reflecting layer, which can be applied, for example, by vapor deposition. The imaging optics 4 can also have microstructures 5 for specifically influencing the light distribution emitted by the imaging optics 4, which Figure 3a as detail of figure 3 are shown. The design of the partial reflection surfaces in the form of strips arranged next to one another is only an exemplary variant of their design. Other variants, such as a stepped structure, are also conceivable.

Zudem sind in Figur 3 Kollimatorelemente 7 dargestellt, die zwischen dem Reflektor 2 und der ersten und der zweiten Lichtquelle 3' bzw. 3" zur Bündelung des Lichtes in Richtung des Reflektors 2 angeordnet sind. Die Kollimatorelemente 7 können als separate Bauteile ausgeführt sein. Alternativ dazu können die Kollimatorelemente 7 ebenso einstückig mit dem lichtleitenden Körper 6 ausgeführt sein. Durch Verwendung der Kollimatorelemente 7 kann sichergestellt werden, dass das von den Lichtquellen abstrahlte Licht unter einem vorgebaren Winkel auf den Reflektor 2 bzw. die Reflexionsteilflächen einfällt, wodurch beispielsweise sichergestellt werden kann, dass sämtliches von den Lichtquellen auf den Reflektor 2 eingestrahltes Licht an den geneigten Flächen totalreflektiert wird.In addition, figure 3 Collimator elements 7 are shown, which are arranged between the reflector 2 and the first and the second light source 3' or 3" for bundling the light in the direction of the reflector 2. The collimator elements 7 can be designed as separate components. Alternatively, the collimator elements 7 also be designed in one piece with the light-conducting body 6. By using the collimator elements 7, it can be ensured that the light emitted by the light sources falls on the reflector 2 or the partial reflection surfaces at a predeterminable angle, which can be used to ensure, for example, that all of the Light sources on the reflector 2 light is totally reflected on the inclined surfaces.

Die Abbildungsoptik 4 kann beispielsweise als Linse aber ebenso als sogenannte "Kissenoptik" ausgeführt sein, die aus einer Vielzahl an kissenförmigen nebeneinander angeordneten Strukturen besteht.The imaging optics 4 can be designed, for example, as a lens, but also as so-called "cushion optics", which consists of a large number of cushion-shaped structures arranged next to one another.

Mit der Leuchtvorrichtung 1 gemäß den gezeigten Ausführungsbeispielen können unterschiedliche Lichtfunktionen unter Verwendung eines einzigen Reflektors in einfacher Weise realisiert werden. So kann die erste Lichtquelle beispielweise eine Abblendlichtfunktion und die zweite Lichtquelle die Abbiegelichtfunktion übernehmen. Beispielhaft werden die folgenden Kombinationen angeführt, wobei Kombinationspaare mit einen Schrägstrich "/" verbunden sind und unterschiedliche Paare voneinander durch einen Strichpunkt ";" getrennt sind: Tagfahrlicht / Positionslicht; Tagfahrlicht/Seitenmarkierungslicht; Tagfahrlicht/Blinklicht; Blinklicht / Positionslicht; Blinklicht / Seitenmarkierungslicht; Abblendlicht / Abbiegelicht; Fernlicht / Abbiegelicht; Abblendlicht / statisches Kurvenlicht; statisches Abbiegelicht links/ statisches Abbiegelicht rechts; Fern-/Abblendlicht-Matrixsegment a / Fern-/Abblendlicht-Matrixsegment b.With the lighting device 1 according to the exemplary embodiments shown, different light functions can be implemented in a simple manner using a single reflector. For example, the first light source can assume a low beam function and the second light source can assume the turning light function. The following combinations are given as examples, where pairs of combinations are connected with a slash "/" and different pairs are separated from each other by a semicolon ";" are separated: daytime running light / position light; daytime running light/side marker light; daytime running lights/indicators; flashing light / position light; flashing light / side marker light; low beam / cornering light; high beam / cornering light; low beam / static cornering light; static left cornering light/ static right cornering light; High/Low Beam Matrix Segment a / High/Low Beam Matrix Segment b.

Figur 4 zeigt eine Schnittdarstellung eines Fahrzeugscheinwerfers mit einer Leuchtvorrichtung 1. Die Lichtquellen 3' und 3" sind dabei in der Nähe einer Abdeckscheibe 9 im vorderen Bereich des Fahrzeugscheinwerfers angeordnet. Dadurch führen die Lichtquellen (z.B. Laser- oder LED-Lichtquellen) Verlustleistung hauptsächlich gegen die Abdeckscheibe 9 ab, wodurch die Wärme erstens effektiv nach außen geleitet werden kann und zweitens dazu verwendet werden kann, einem Beschlagen oder Vereisen der Abdeckscheibe entgegen zu wirken und andere Kühlmaßnahmen wie z.B. Lüfter entfallen können. figure 4 shows a sectional view of a vehicle headlight with a lighting device 1. The light sources 3' and 3" are arranged in the vicinity of a cover plate 9 in the front area of the vehicle headlight. As a result, the light sources (e.g. laser or LED light sources) dissipate power mainly against the cover plate 9, whereby the heat can firstly be effectively conducted to the outside and secondly can be used to counteract fogging or icing of the cover pane and other cooling measures such as fans can be omitted.

Figur 5 zeigt eine Detaildarstellung eines Strahlenganges eines Reflektors 2 der Leuchtvorrichtung 1. Um ein Ubersprechen des von einzelnen Lichtquellen 3' und 3" abgestrahlten Lichts zu verhindern, ist vorgesehen sein, dass die erste Lichtquelle 3' unter ersten Einstrahlwinkeln α' und die zweite Lichtquelle 3" unter zweiten Einstrahlwinkeln α" auf die jeweiligen Reflexionsteilflächen 2a' bzw. 2a" strahlen, wobei jede Reflexionsteilfläche 2a' bzw. 2a" einen Neigungswinkel β' bzw. β" aufweist, der den jeweiligen Einstrahlwinkel α' bzw. α" der nicht zugeordneten Lichtquelle 3" bzw. 3' übertrifft, wobei die Winkel auf die optische Achse des Reflektors bezogen sind. Anders ausgedrückt, bedeutet dies, das die ersten Reflexionsteilflächen 2a' der ersten Lichtquelle 3' zugeordnet sind, wobei aufgrund der abweichenden räumlichen Lage der einzelnen Reflexionsteilflächen 2a' zueinander jede Reflexionsteilfläche 2a' einen anderen Winkel α' (jede Reflexionsteilfläche 2a' ist dadurch einem anderen Einstrahlwinkel α' und Neigungswinkel β' zugeordnet - zu besseren Übersicht wurden die Winkel nur zu einer einzelnen Reflexionsteilfläche 2a' mit Bezugszeichen versehen) in Bezug auf die erste Lichtquelle 3' einnimmt. Jede Reflexionsteilfläche 2a' ist dabei so geneigt, dass sie nicht durch die zweite Lichtquelle 3" bestrahlt werden kann. Beispielsweise ist die erste Reflexionsteilfläche 2a', der in Fig. 5 das Bezugszeichen β' zugeordnet ist, geringer geneigt, als der Einstrahlwinkel α" der zweiten Lichtquelle 3". Dadurch wird eine Bestrahlung der betreffenden ersten Reflexionsteilfläche 2a' durch die zweite Lichtquelle 3" verhindert. Selbiges trifft in analoger Weise auf die zweiten Reflexionsteilflächen 2a" zu. figure 5 shows a detailed view of a beam path of a reflector 2 of the lighting device 1. In order to prevent crosstalk of the light emitted by individual light sources 3' and 3'', provision is made for the first light source 3' to shine at first irradiation angles α' and the second light source 3'' radiate at second angles of incidence α" onto the respective partial reflection surfaces 2a' or 2a", with each partial reflection surface 2a' or 2a" having an angle of inclination β' or β" which corresponds to the respective angle of incidence α' or α" of the unassigned light source 3" and 3', respectively, the angles being referenced to the optical axis of the reflector. In other words, this means that the first partial reflection surfaces 2a' are assigned to the first light source 3', whereby due to the different spatial position of the individual partial reflection surfaces 2a' to one another, each partial reflection surface 2a' has a different angle α' (each partial reflection surface 2a' is therefore at a different Angle of incidence α′ and angle of inclination β′ assigned—for a better overview, the angles were only provided with a single partial reflection surface 2a′ with reference symbols) in relation to the first light source 3′. Each partial reflection surface 2a′ is inclined in such a way that it cannot be irradiated by the second light source 3″. For example, the first partial reflection surface 2a′, which is shown in figure 5 assigned the reference symbol β', is less inclined than the angle of incidence α" of the second light source 3". This prevents the relevant first partial reflection surface 2a' from being irradiated by the second light source 3". The same applies in an analogous manner to the second partial reflection surfaces 2a".

Claims (12)

  1. Lighting device (1) for a motor vehicle headlamp, comprising
    - a reflector (2) having an overall reflection surface (2a) for reflecting light at least partially in the direction of an optical axis (x) of the reflector (2),
    - first and second light sources (3', 3") for irradiating light onto the reflector (2), the first and second light sources (3', 3") being spaced apart from each other at least in a direction normal to the optical axis (x) of the reflector (2),
    wherein the overall reflection surface (2a) of the reflector (2) has a number of first reflection partial surfaces (2a') facing the first light source (3'), which are arranged for imaging the light irradiated by the first light source (3') in the form of at least a first light distribution of a first light function,
    wherein the overall reflection surface (2a) of the reflector (2) has a number of second reflection partial surfaces (2a") facing the second light source (3"), which are set up for imaging the light irradiated by the second light source (3") in the form of a second light distribution of a second light function, wherein the first light distribution differs from the second light distribution, wherein the total reflection surface (2a) of the reflector (2) is at least partially composed of alternately juxtaposed first and second reflection sub-surfaces (2a', 2a")
    the first and second light sources (3', 3") being arranged in a region located in front of the reflector (2) in such a way that their emitted light is at least partially radiated onto the reflector (2) counter to the direction of the optical axis (x) of the reflector (2), characterized in that the lighting device (1) has imaging optics (4) which are arranged downstream of the reflector (2) for imaging at least part of the light reflected by the reflector (2), the imaging optics (4) preferably having microstructures (5) for selectively influencing the light distribution emitted by the imaging optics (4), the reflector (2) being formed integrally with a light-conducting body (6) which comprises the imaging optics (4), in that the reflector (2) is formed on a light-reflecting end portion (6a) of the light-conducting body (6).
  2. Lighting device (1) according to claim 1, wherein the first light function and the second light function are selected from the group consisting of.
    - Daytime running light, position light, side marker light, turn signal light, low beam light, high beam light, static cornering light, turning light,
    wherein the first and second light functions differ from one another.
  3. Lighting device (1) according to claim 1 or 2, wherein the first and/or second reflection partial surfaces (2a', 2a") have microstructures which are set up to deflect light towards a third light distribution.
  4. Lighting device (1) according to one of claims 1 to 3, wherein the total reflection surface (2a) consists exclusively of first and second partial reflection surfaces (2a', 2a") arranged next to one another.
  5. Lighting device (1) according to claim 1 or 3, wherein the total reflection surface (2a) comprises at least one third reflection partial surface, preferably a number of third reflection partial surfaces, for generating a further light distribution, wherein preferably the at least one third reflection partial surface faces the first and/or the second light source (3', 3"), wherein particularly preferably the lighting device (1) comprises a third light source, and the third reflection partial surface faces the third light source.
  6. Lighting device (1) according to claim 5, wherein the lighting device (1) has a light sensor for checking the light function of at least one of the light sources, wherein the light distribution generated by the at least one third reflection partial surface is designed in such a way and the light sensor (8) is arranged in such a way that the light distribution generated by the at least one third reflection partial surface radiates onto the light sensor (8).
  7. Lighting device (1) according to one of claims 5 or 6, wherein the light distribution generated by the at least one third reflection surface is a light distribution of a light function selected from the following group: daytime running light, position light, side marker light, direction indicator light, low beam light, high beam light, static cornering light, turning light.
  8. Lighting device (1) according to one of the preceding claims, wherein individual reflection partial surfaces, in particular the first and second reflection partial surfaces (2a', 2a"), are designed in strip form and are arranged next to one another, wherein strips arranged next to one another are connected to one another.
  9. Lighting device (1) according to one of the preceding claims, wherein the first light source (3') radiates at first angles of incidence (α') and the second light source (3") radiates at second angles of incidence (α") onto the respective reflection partial surfaces (2a', 2a"), each reflection partial surface having an angle of inclination (β', β") which exceeds the respective angle of incidence (α',α") of the unassigned light source (3", 3'), the angles (α', α", β', β") being related to the optical axis (x) of the reflector (2).
  10. Lighting device (1) according to one of the preceding claims, wherein individual reflection partial surfaces, in particular the first and second reflection partial surfaces (2a', 2a"), are formed as strip-shaped surfaces arranged next to one another on the surface of the end section (6a), wherein the first and second reflection partial surfaces (2a', 2a") are inclined to one another, wherein preferably the strip-shaped surfaces are coated with a light-reflecting layer.
  11. Lighting device (1) according to one of the preceding claims, wherein at least between the reflector (2) and the first and the second light source (3', 3") in each case a collimator element (7) is arranged for focusing the light in the direction of the reflector (2).
  12. Vehicle headlamp, in particular motor vehicle headlamp, comprising a lighting device (1) according to one of the preceding claims and a cover lens (9), the lighting device (1) being arranged in such a way that the rear side of the light sources (3', 3") faces the cover lens (9).
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Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP7351075B2 (en) * 2018-05-22 2023-09-27 市光工業株式会社 Vehicle lights
DE102019123936A1 (en) * 2019-09-06 2021-03-11 Automotive Lighting Reutlingen Gmbh Lighting device and projection module for such a lighting device
DE102020102291A1 (en) 2020-01-30 2021-08-05 HELLA GmbH & Co. KGaA Lighting device for vehicles
CN117795245A (en) * 2021-08-16 2024-03-29 路特斯技术创新中心有限公司 Turn signal light device for a vehicle projection module and vehicle light system comprising at least one such turn signal light device
CN117628429A (en) * 2022-08-12 2024-03-01 巨铠精密工业股份有限公司 Multi-light source lighting module and automobile lamp thereof

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0974485B1 (en) * 1998-07-24 2006-04-05 Stanley Electric Co., Ltd. Signal lamp for vehicle
DE10247980B4 (en) * 2002-10-15 2011-05-26 Automotive Lighting Reutlingen Gmbh vehicle light

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4929866A (en) * 1987-11-17 1990-05-29 Mitsubishi Cable Industries, Ltd. Light emitting diode lamp
JP3173453B2 (en) * 1998-03-13 2001-06-04 スタンレー電気株式会社 Signal lights for vehicles
FR2944578B1 (en) * 2009-04-21 2013-08-02 Valeo Vision Sas MODULE AND LIGHTING DEVICE FOR VEHICLE WITH ENHANCED ROAD FUNCTION
DE102010045847A1 (en) * 2010-09-17 2012-03-22 Automotive Lighting Reutlingen Gmbh Refelxionsmodul a motor vehicle headlamp
DE102010056312B4 (en) * 2010-12-27 2014-02-13 Automotive Lighting Reutlingen Gmbh Motor vehicle light
JP5869223B2 (en) * 2011-02-09 2016-02-24 株式会社小糸製作所 Vehicle headlamp
DE102013202957B4 (en) * 2013-02-22 2018-07-19 Automotive Lighting Reutlingen Gmbh Lighting device for a motor vehicle with a reflector supporting two light functions
JP6106502B2 (en) * 2013-04-15 2017-04-05 株式会社小糸製作所 Vehicle lamp
JP2015174551A (en) * 2014-03-14 2015-10-05 トヨタ自動車株式会社 Vehicle headlight system

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0974485B1 (en) * 1998-07-24 2006-04-05 Stanley Electric Co., Ltd. Signal lamp for vehicle
DE10247980B4 (en) * 2002-10-15 2011-05-26 Automotive Lighting Reutlingen Gmbh vehicle light

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EP3447371A1 (en) 2019-02-27
CN109578929A (en) 2019-04-05
AT520345A1 (en) 2019-03-15
AT520345B1 (en) 2019-06-15
CN109578929B (en) 2021-08-03

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