EP3447371B1 - Dispositif d'éclairage pour un phare de véhicule automobile - Google Patents

Dispositif d'éclairage pour un phare de véhicule automobile 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.)
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Application number
EP18183048.0A
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German (de)
English (en)
Other versions
EP3447371A1 (fr
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/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • 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)

Claims (12)

  1. Dispositif d'éclairage (1) pour un projecteur de véhicule automobile, comprenant
    - un réflecteur (2) ayant une surface totale de réflexion (2a) pour réfléchir la lumière au moins partiellement dans la direction d'un axe optique (x) du réflecteur (2),
    - une première et une deuxième source de lumière (3', 3") pour irradier de la lumière sur le réflecteur (2), la première et la deuxième source de lumière (3', 3") étant espacées l'une de l'autre au moins dans une direction normale à l'axe optique (x) du réflecteur (2),
    la surface totale de réflexion (2a) du réflecteur (2) présentant un certain nombre de premières surfaces partielles de réflexion (2a') tournées vers la première source lumineuse (3'), qui sont aménagées pour reproduire la lumière rayonnée par la première source lumineuse (3') sous la forme d'au moins une première répartition lumineuse d'une première fonction lumineuse,
    la surface totale de réflexion (2a) du réflecteur (2) présentant un certain nombre de deuxièmes surfaces partielles de réflexion (2a") tournées vers la deuxième source lumineuse (3"), qui sont aménagées pour reproduire la lumière rayonnée par la deuxième source lumineuse (3") sous la forme d'une deuxième répartition de lumière d'une deuxième fonction lumineuse, la première distribution de lumière étant différente de la deuxième distribution de lumière, la surface totale de réflexion (2a) du réflecteur (2) étant composée au moins en partie de premières et de deuxièmes surfaces partielles de réflexion (2a', 2a") disposées en alternance les unes à côté des autres,
    la première et la deuxième sources lumineuses (3', 3") étant disposées dans une zone située devant le réflecteur (2) de telle sorte que leur lumière émise est au moins partiellement rayonnée sur le réflecteur (2) en sens inverse de la direction de l'axe optique (x) du réflecteur (2), caractérisé en ce que le dispositif lumineux (1) présente une optique de reproduction (4) qui est placée en aval du réflecteur (2) pour reproduire au moins une partie de la lumière réfléchie par le réflecteur (2), l'optique de reproduction (4) présentant de préférence des microstructures (5) pour influencer de manière ciblée la répartition de la lumière émise par l'optique de reproduction (4), le réflecteur (2) étant réalisé d'une seule pièce avec un corps conducteur de lumière (6) qui comprend l'optique de reproduction (4), en ce que le réflecteur (2) est réalisé sur une section d'extrémité (6a) réfléchissant la lumière du corps conducteur de lumière (6).
  2. Dispositif d'éclairage (1) selon la revendication 1, dans lequel la première fonction d'éclairage et la deuxième fonction d'éclairage sont choisies parmi le groupe suivant
    - feux de jour, feux de position, feux de position latéraux, feux clignotants, feux de croisement, feux de route, feux de virage statiques, feux de virage,
    la première et la deuxième fonction d'éclairage étant différentes l'une de l'autre.
  3. Dispositif d'éclairage (1) selon la revendication 1 ou 2, dans lequel les premières et/ou deuxièmes surfaces partielles de réflexion (2a', 2a") présentent des microstructures qui sont agencées pour dévier la lumière vers une troisième distribution de lumière.
  4. Dispositif d'éclairage (1) selon l'une des revendications 1 à 3, dans lequel la surface de réflexion totale (2a) se compose exclusivement de premières et de deuxièmes surfaces partielles de réflexion (2a', 2a") disposées côte à côte.
  5. Dispositif d'éclairage (1) selon la revendication 1 ou 3, dans lequel la surface de réflexion totale (2a) présente au moins une troisième surface partielle de réflexion, de préférence un nombre de troisièmes surfaces partielles de réflexion, pour produire une autre répartition de la lumière, dans lequel de préférence la au moins une troisième surface partielle de réflexion est tournée vers la première et/ou la deuxième source lumineuse (3', 3"), de manière particulièrement préférée le dispositif d'éclairage (1) présentant une troisième source lumineuse, et la troisième surface partielle de réflexion étant tournée vers la troisième source lumineuse.
  6. Dispositif d'éclairage (1) selon la revendication 5, dans lequel le dispositif d'éclairage (1) présente un capteur de lumière pour contrôler la fonction d'éclairage d'au moins une des sources de lumière, la répartition de la lumière générée par la au moins une troisième surface partielle de réflexion étant réalisée de telle sorte et le capteur de lumière (8) étant disposé de telle sorte que la répartition de la lumière générée par la au moins une troisième surface de réflexion rayonne sur le capteur de lumière (8).
  7. Dispositif d'éclairage (1) selon l'une des revendications 5 ou 6, dans lequel la répartition lumineuse générée par ladite au moins une troisième surface partielle de réflexion est une répartition lumineuse d'une fonction d'éclairage choisie dans le groupe suivant : éclairage diurne, éclairage de position, éclairage de marquage latéral, éclairage d'indication de direction, éclairage de croisement, éclairage de route, éclairage statique de virage, éclairage de changement de direction.
  8. Dispositif d'éclairage (1) selon l'une des revendications précédentes, dans lequel des surfaces partielles de réflexion individuelles, en particulier les premières et deuxièmes surfaces partielles de réflexion (2a', 2a"), sont réalisées en forme de bandes et sont disposées les unes à côté des autres, des bandes disposées les unes à côté des autres étant reliées entre elles.
  9. Dispositif d'éclairage (1) selon l'une des revendications précédentes, dans lequel la première source lumineuse (3') rayonne sous des premiers angles d'incidence (α') et la deuxième source lumineuse (3") rayonne sous des deuxièmes angles d'incidence (α") sur les surfaces partielles de réflexion respectives (2a', 2a"), chaque surface partielle de réflexion présentant un angle d'inclinaison (β', β") qui dépasse l'angle d'incidence respectif (α',α") de la source lumineuse non associée (3", 3'), les angles (α', α", β', β") étant rapportés à l'axe optique (x) du réflecteur (2).
  10. Dispositif d'éclairage (1) selon l'une des revendications précédentes, dans lequel des surfaces partielles de réflexion individuelles, en particulier les premières et les deuxièmes surfaces partielles de réflexion (2a', 2a"), sont réalisées sous forme de surfaces en forme de bandes disposées les unes à côté des autres sur la surface de la section d'extrémité (6a), les premières et les deuxièmes surfaces partielles de réflexion (2a', 2a") étant inclinées les unes par rapport aux autres, les surfaces en forme de bandes étant de préférence revêtues d'une couche réfléchissant la lumière.
  11. Dispositif d'éclairage (1) selon l'une des revendications précédentes, dans lequel un élément collimateur (7) est disposé au moins entre le réflecteur (2) et la première et la deuxième source lumineuse (3', 3") pour concentrer la lumière en direction du réflecteur (2).
  12. Phare de véhicule, en particulier phare de véhicule automobile, comprenant un dispositif d'éclairage (1) selon l'une des revendications précédentes ainsi qu'une plaque de recouvrement (9), le dispositif d'éclairage (1) étant disposé de telle sorte que la face arrière des sources lumineuses (3', 3") est tournée vers la plaque de recouvrement (9).
EP18183048.0A 2017-08-18 2018-07-12 Dispositif d'éclairage pour un phare de véhicule automobile Active EP3447371B1 (fr)

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JP7351075B2 (ja) * 2018-05-22 2023-09-27 市光工業株式会社 車両用灯具
DE102019123936A1 (de) * 2019-09-06 2021-03-11 Automotive Lighting Reutlingen Gmbh Beleuchtungseinrichtung und Projektionsmodul für eine solche Beleuchtungseinrichtung
DE102020102291A1 (de) 2020-01-30 2021-08-05 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge
CN117795245A (zh) * 2021-08-16 2024-03-29 路特斯技术创新中心有限公司 用于车辆投射模块的转向灯装置和包括至少一个这种转向灯装置的车辆灯系统
CN117628431A (zh) * 2022-08-12 2024-03-01 巨铠精密工业股份有限公司 多光源照明模块及其汽车灯具

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DE10247980B4 (de) * 2002-10-15 2011-05-26 Automotive Lighting Reutlingen Gmbh Fahrzeugleuchte

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AT520345B1 (de) 2019-06-15
CN109578929A (zh) 2019-04-05
AT520345A1 (de) 2019-03-15
EP3447371A1 (fr) 2019-02-27

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