EP4025827B1 - 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
EP4025827B1
EP4025827B1 EP20753367.0A EP20753367A EP4025827B1 EP 4025827 B1 EP4025827 B1 EP 4025827B1 EP 20753367 A EP20753367 A EP 20753367A EP 4025827 B1 EP4025827 B1 EP 4025827B1
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EP
European Patent Office
Prior art keywords
light
optical element
collimator
illumination
module
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
EP20753367.0A
Other languages
German (de)
English (en)
Other versions
EP4025827A1 (fr
Inventor
Matthias Kemetmüller
Alexander Strohmüller
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 EP4025827A1 publication Critical patent/EP4025827A1/fr
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Publication of EP4025827B1 publication Critical patent/EP4025827B1/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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • 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
    • F21S41/275—Lens surfaces, e.g. coatings or surface structures
    • 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
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • 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
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/635—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by moving refractors, filters or transparent cover plates
    • 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
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • 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
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/2605—Refractors
    • 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
    • F21S43/315—Optical layout thereof using total internal reflection
    • 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
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • 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
    • F21W2103/00—Exterior vehicle lighting devices for signalling purposes
    • F21W2103/55—Daytime running lights [DRL]

Definitions

  • Numerous lighting devices for motor vehicle headlights are known from the prior art (see for example CH 296 715 A and WO 2017/066817 A ).
  • the disadvantage is that lighting devices in which light is emitted over a relatively large area do not achieve a homogeneous luminous impression. This is due to the spatially inhomogeneous light intensity of the light sources.
  • scattering lenses were attached after a collimator, for example. However, these are very heavy and do not achieve the legally required light values, which are required for lighting devices in the area of motor vehicle headlights.
  • the object of the present invention is to alleviate or eliminate the disadvantages of the prior art.
  • the invention therefore aims in particular to create a lighting device in which the homogenization of the luminous impression is further improved.
  • the light exit surface of the collimator is formed from a large number of lenses, which are preferably arranged in a uniform grid over the entire light exit surface of the collimator, with each lens being set up to emit the light of the illuminant divergently onto the light coupling surface of the optical element, so that each the multiplicity of lenses illuminates the light in-coupling surface of the optics element, all lenses having essentially the same focal length, the collimator and the optics element being spaced apart from one another, the distance essentially corresponding to the focal length of the lenses.
  • the light from the light source is scattered onto the light input surface by all lenses which are arranged on the light exit surface of the collimator, whereby the light input surface of the optical element is particularly evenly illuminated per unit area.
  • the light intensity at the light in-coupling surface of the optical element per unit area is essentially constant.
  • the lenses are preferably designed as diffusing lenses and are formed in one piece with the collimator.
  • the light radiated divergently by each lens strikes the light coupling surface of the optical element and is coupled into the optical system via the Fresnel lens.
  • the weight of the optical element can be reduced by using a Fresnel lens.
  • the light beams run parallel within the optical element and are scattered by the optical elements on the light output surface when they exit the optical system. A particularly homogeneous luminous impression can thus be achieved on the light output surface.
  • the light output surface has a uniform brightness per unit area.
  • the optical element can be designed in the form of a plate, it being possible for the plate-shaped optical element to be curved or planar. With this, a special low weight can be achieved.
  • the width of the plate which corresponds to the extent of the plate in the direction of light propagation, can be between 5 mm and 15 mm.
  • the length of the plate can be between 20 mm and 50 mm.
  • the height of the plate can be between 20mm and 50mm.
  • Each of the plurality of lenses preferably illuminates the light coupling surface of the optical element completely, as a result of which the illumination of the light coupling surface is composed of a superimposition of the light emitted by all the lenses.
  • the light exiting from an individual lens is essentially completely superimposed on the light coupling surface with the light exiting from all other lenses.
  • the light intensity at the light coupling surface of the optics element per unit area is thus advantageously essentially constant or of the same magnitude. In other words, the differences in intensity of the light emitted by the lighting means are compensated or evened out by the superimposition of the light emitted by each lens.
  • each lens has the same dimensions and/or optical properties.
  • each lens is 0.2mm to 5mm, preferably 0.6mm to 3mm, most preferably 1mm to 2mm.
  • the entire light exit surface can be formed from a large number of lenses. This advantageously leads to a superimposition of a large number of light bundles, which in turn improves the uniform illumination of the light coupling surface of the optical element.
  • the collimator can be conically shaped and have an opening angle of, for example, 25° to 30°.
  • the light exit surface of the collimator is smaller than the light coupling surface of the optical element.
  • the overall size of the lighting device can be reduced by a collimator that is small relative to the optical element.
  • the light exit surface of the collimator can be connected to the light coupling surface of the optics element in such a way be spaced and arranged so that the light emerging from each lens exclusively illuminates the light coupling surface of the optical element completely or exactly.
  • the individual lenses are preferably calculated by a person skilled in the art in such a way that, at a distance from the lenses which corresponds to the focal length of the lenses, each lens is illuminated on an area of the same size, which corresponds to the light in-coupling area of the optical element.
  • the lighting device can have a first and a second light module, with the first light module preferably illuminating a first partial area of the light coupling surface, and the second light module illuminating a second partial surface of the light coupling surface, with the first and the second partial surface each forming one half of the light coupling surface, for example.
  • the first and the second light module can, for example, have illuminants with different colors, as a result of which light of different colors can advantageously be emitted via the light coupling-out surface of the optical system.
  • the first and the second light module can also each illuminate the entire light coupling surface of the optical system, preferably completely or over the entire surface.
  • the lighting device can also include three or more light modules.
  • the first and the second partial surface can in particular be illuminated by the respective light module without overlapping.
  • an illumination system comprising an illumination device according to the invention and an illumination unit, the illumination unit being set up to generate light and emit it along a light emission direction, with the light emission direction being aimed at the focal plane of the lenses of the collimator of the light module, the illumination system having an adjustment device comprises, with which the optical element of the lighting device can be transferred between a first and a second position, wherein in the first position the optical element is arranged in such a way that the light emitted by the at least one light module of the lighting device impinges on the light coupling surface of the optical element, wherein in the second position, the optical element is arranged in such a way that no light emitted by the at least one light module of the lighting device impinges on the light coupling surface of the optical element and that Optical element is outside the light emission direction of the light that can be emitted by the lighting unit.
  • the entire lighting device or the lighting unit of the lighting system does not have to be adjusted between two positions, but only the optical system.
  • smaller, less powerful adjustment devices such as a linear drive or a servomotor, can be used.
  • the optics system can, for example, be adjustably fastened to one or more guide rails.
  • the optical element can also be pivoted about a pivot axis with the adjustment device, the optical system being in the pivoted state outside the light propagation direction of the at least one light module of the lighting device and outside the light emission direction of the lighting unit.
  • the light module of the lighting device and the lighting unit can be arranged relative to one another in such a way that the light propagation direction of the collimator of the light module and the light emission direction of the lighting unit have an acute angle to one another.
  • the light propagation direction of the collimator of the light module and the light emission direction of the lighting unit preferably have an intersection point, with the intersection point lying in the focal plane of the lenses of the collimator.
  • the light module of the lighting device and the lighting unit are positioned relative to one another in such a way that the light propagation direction and the light emission direction are each directed onto the light coupling surface of the optical element.
  • the at least one light module of the lighting device can be in an active state, in which Light is emitted from the at least one light module onto the light coupling surface, with the lighting unit being in an inactive state while the lighting device is in the active state, in which the lighting unit does not emit any light.
  • the lighting unit When the optical element is in the second position, the lighting unit can be in an active state, in which light is emitted from the lighting unit as a light beam, with the at least one light module of the lighting device being in the active state while the lighting unit is in is in an inactive state in which the at least one light module does not emit any light.
  • the lighting system can generate a first light distribution when the optical element is in the first position and the at least one light module of the lighting device is in an active state, and generate a second light distribution when the optical element is in the second position and the lighting unit is in is an active state, preferably wherein the first and second light distributions are different.
  • the first light distribution preferably comprises a light distribution of a daytime running light or a signal light function
  • the second light distribution comprises a low-beam light distribution or a high-beam light distribution.
  • the light module of the lighting device can be active and the optical element can be in the first position.
  • the light module of the lighting device in particular can be brought into an inactive state, with the lighting unit being brought into an active state, in particular essentially at the same time, and the optical system being moved from the first to the second position . This means that the transition from different light functions or light distributions can be carried out quickly and easily.
  • the lighting device and/or the lighting unit preferably each have a lighting means which is set up to generate white and/or colored light.
  • the lighting device can advantageously provide, for example, colored light for a signal light function and the lighting unit can provide essentially white light for a low beam or high beam.
  • top, bottom, horizontal, vertical are to be understood as indications of the orientation when the lighting device or the lighting system is arranged in the normal use position after it or it is in an im Motor vehicle headlight was installed.
  • the Figures 1-3 show different views of a lighting device 1 for a motor vehicle headlight with two light modules 2, wherein the light modules 2 each have a light source 2a and a collimator 3.
  • the light modules 2 are preferably identical in construction.
  • An embodiment with a light module 2 is in 4 shown.
  • the collimator 3 is set up so that the light generated by the illuminant 2a is emitted via a light exit surface 3a of the collimator 3 as a divergent light beam in a light propagation direction 4 (see Fig. Figures 4-5 ) exit.
  • the collimator 3 is conically shaped and has an opening angle ⁇ of 25° to 30° (see Fig 2 ).
  • the lighting device also includes an optical element 5 which is arranged after the collimator 3 in the direction of light propagation 4 .
  • the optical element 5 has a light coupling surface 5a and a light coupling surface 5b, the light from the collimator 3 hitting the light coupling surface 5a, being guided through the optical element 5 to the light coupling surface 5b, and exiting the optical element 5 at the light coupling surface 5b.
  • the light in-coupling surface 5a has Fresnel optics, which are set up to break the light beams when they enter the optics element 5 in such a way that the light beams propagate parallel to one another within the optics element 5 .
  • the light decoupling surface 5b of the optical element 5 has a multiplicity of optical elements 6, each optical element 6 being designed and set up in such a way that the light emerges from each optical element 6 as a divergent light beam (see Fig. Figures 4-5 ).
  • the light exit surface 3a of the collimator 3 is formed from a multiplicity of lenses 7 .
  • the lenses 7 are arranged in a uniform grid over the entire light exit surface 3 of the collimator 3 .
  • Each lens 7 is set up to radiate the light of the illuminant 2a divergently onto the light coupling surface 5a of the optics element 5 , so that each of the plurality of lenses 7 illuminates the light coupling surface 5a of the optics element 5 .
  • All lenses 7 have essentially the same focal length, with the distance between the collimator 3 and the optical element 5 essentially corresponds to the focal length of the lenses 7 .
  • the optics element 5 is planar or even and plate-shaped, with the optics element 5 also being able to be embodied as a curved plate.
  • Each of the plurality of lenses 7 completely illuminates the light coupling surface 5a of the optics element 5 .
  • the illumination of the light coupling surface 5a is composed of a superimposition of the light emitted by all lenses 7 .
  • Each lens 7 has the same dimensions and/or optical properties.
  • the diameter of each lens 7 is 0.2 mm to 5 mm, preferably 0.6 mm to 3 mm, particularly preferably 1 mm to 2 mm.
  • the light exit surface 3a of the collimator 3 is smaller than the light coupling surface 5a of the optical element 5.
  • the light exit surface 3a of the collimator 3 is at a distance from the light coupling surface 5a of the optical element 5, with the light emerging from each lens 7 only completely or .precisely illuminated. In particular, no light rays run laterally or beyond an edge of the optical element 5 .
  • the lenses 7 of the light exit surface 3a are thus calculated for the size of the light coupling surface 5a.
  • the collimator 3 illuminates the entire light coupling surface 5a.
  • the first light module 2 illuminates a first partial surface of the light coupling surface 5a and the second light module 2 illuminates a second partial surface of the light coupling surface 5a, with the first and second partial surfaces each forming one half of the light coupling surface 5a, for example.
  • the first and second partial areas are preferably illuminated without overlapping.
  • the beam path of the light beams between the collimator 3 and the optical element 5 and after the optical element 5 is shown schematically, with only the two outer and one central light beam being shown.
  • the Fresnel optics of the light coupling surface 5a has a structure which compensates for the angle between the collimators 3 and the light coupling surface 5a, so that all light beams within the optics element are directed in parallel.
  • FIG. 1 shows an illumination system 8 with an illumination device 1 and an illumination unit 9.
  • the illumination unit 9 is set up to generate light and to emit it along a light emission direction 10.
  • the light emission direction 10 is directed towards the focal plane of the lenses 7 of the collimator 3 of the light module 2 or towards the optics element 5 if this is in a first position (see Fig. 6 ) is arranged.
  • the lighting system 8 includes an adjustment device 11 with which the optical element 5 can be transferred between the first and a second position. The second position is in 7 shown. In the first position, the light emitted by the collimator 3 of the illumination device 1 strikes the light coupling surface 5a of the optics element 5.
  • the illumination unit 9 is inactive at this point in time and does not emit any light, this being indicated by the dashed lines.
  • the optical element In the second position, the optical element is outside the light propagation direction 4 of the collimator 3 and also outside the light emission direction 10 of the lighting unit 9. The light from the lighting unit 9 can thus be emitted unhindered, for example onto a roadway.
  • the light module 2 of the lighting device 1 and the lighting unit 9 are arranged relative to one another such that the light propagation direction 4 of the collimator 3 of the light module 2 and the light emission direction 10 of the lighting unit 9 have an acute angle to one another.
  • the light propagation direction 4 and the light emission direction 10 have a point of intersection which lies in the focal plane of the lenses 7 of the collimator 3 .
  • the light module 2 of the lighting device 1 When the optical element 5 is in the first position, the light module 2 of the lighting device 1 is in an active state, in which light is emitted from the light module 2 onto the light coupling surface 5a. At this time, the lighting unit 9 is in an inactive state in which the lighting unit 9 does not emit light.
  • the lighting unit 9 is in an active state in which light is emitted from the lighting unit 9 as a light beam.
  • the light module 2 of the lighting device 1 is in an inactive state in which the light module 2 does not emit any light. This is indicated by the dashed lines in 7 implied.
  • the first position of the optical element 5 is in 7 also indicated as a dashed line.
  • the lighting system 8 can generate a first light distribution when the optical element 5 is in the first position and the at least one light module 2 of the lighting device 1 is in an active state. Furthermore, a second light distribution can be generated when the optical element 5 is in the second position and the lighting unit 9 is in an active state.
  • the first light distribution is, for example, a light distribution of a daytime running light or a signal light function
  • the second light distribution is, for example, a low beam distribution or a high beam distribution. Accordingly, it is possible to switch between different light distributions, depending on the position in which the optical element 5 is.

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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 (15)

  1. Dispositif d'éclairage (1) pour un projecteur de véhicule automobile, comprenant :
    - au moins un module d'éclairage (2), le module d'éclairage (2) comprenant un moyen d'éclairage (2a) et un collimateur (3) associé au moyen d'éclairage (2a), le moyen d'éclairage (2a) produisant de la lumière et la couplant dans le collimateur (3), le collimateur (3) étant conçu pour que la lumière produite par le moyen d'éclairage (2a) sorte par une surface de sortie de lumière (3a) du collimateur (3) sous forme de faisceau lumineux divergent dans une direction de propagation de la lumière (4),
    - un élément optique (5), qui est disposé après le collimateur (3) dans la direction de propagation de la lumière (4), avec une surface de couplage de lumière (5a) et une surface de découplage de lumière (5b), la lumière qui sort du collimateur (3) frappant la surface de couplage de lumière (5a) de l'élément optique (5), est guidée par l'élément optique (5) vers la surface de découplage de la lumière (5b) de l'élément optique (5) et sort de l'élément optique (5) au niveau de la surface de découplage de la lumière (5b), la surface de couplage de la lumière (5a) de l'élément optique (5) présentant une optique de Fresnel, l'optique de Fresnel étant conçue pour réfracter les rayons lumineux lors de leur entrée dans l'élément optique (5) de telle sorte que les rayons lumineux se propagent parallèlement les uns aux autres à l'intérieur de l'élément optique (5), la surface de découplage de lumière (5b) de l'élément optique (5) présentant une pluralité d'éléments optiques (6), chaque élément optique (6) étant respectivement conçu et aménagé de telle sorte que la lumière sort de chaque élément optique (6) sous forme de faisceau lumineux, de préférence divergent,
    caractérisé en ce que
    la surface de sortie de lumière (3a) du collimateur (3) est formée d'une pluralité de lentilles (7), qui sont de préférence disposées selon une trame uniforme sur toute la surface de sortie de lumière (3a) du collimateur (3), chaque lentille (7) étant adaptée pour émettre la lumière du moyen d'éclairage (2a) de manière divergente sur la surface de couplage de lumière (5a) de l'élément optique (5), de sorte que chacune de la pluralité de lentilles (7) éclaire respectivement la surface de couplage de lumière (5a) de l'élément optique (5), toutes les lentilles (7) ayant sensiblement la même distance focale, le collimateur (3) et l'élément optique (5) étant espacés l'un de l'autre, la distance correspondant sensiblement à la distance focale des lentilles (7).
  2. Dispositif d'éclairage (1) selon la revendication 1, dans lequel l'élément optique (5) est conçu en forme de plaque, l'élément optique (5) en forme de plaque étant incurvé ou plan.
  3. Dispositif d'éclairage (1) selon l'une quelconque des revendications précédentes, dans lequel chacune de la pluralité de lentilles (7) éclaire complètement la surface de couplage de lumière (5a) de l'élément optique (5), l'éclairage de la surface de couplage de lumière (5a) étant composé d'une superposition de la lumière émise par toutes les lentilles (7).
  4. Dispositif d'éclairage (1) selon l'une quelconque des revendications précédentes, dans lequel chaque lentille (7) présente les mêmes dimensions et/ou caractéristiques optiques.
  5. Dispositif d'éclairage (1) selon l'une quelconque des revendications précédentes, dans lequel le diamètre de chaque lentille (7) est compris entre 0,2 mm et 5 mm, de préférence entre 0,6 mm et 3 mm, plus préférentiellement entre 1 mm et 2 mm.
  6. Dispositif d'éclairage (1) selon l'une quelconque des revendications précédentes, dans lequel la surface de sortie de lumière (3a) du collimateur (3) est inférieure à la surface de couplage de lumière (5a) de l'élément optique (5).
  7. Dispositif d'éclairage (1) selon l'une des revendications précédentes, dans lequel la surface de sortie de lumière (3a) du collimateur (3) est espacée et disposée par rapport à la surface de couplage de lumière (5a) de l'élément optique (5) de telle sorte que la lumière sortant de chaque lentille (7) éclaire exclusivement la surface de couplage de lumière (5a) de l'élément optique (5) de manière complète et précise.
  8. Dispositif d'éclairage (1) selon l'une des revendications précédentes, comprenant un premier (2) et un deuxième (2a) modules lumineux, le premier module lumineux (2) éclairant une première partie de la surface de couplage de lumière (5a), et le deuxième module lumineux (2b) éclaire une deuxième surface partielle de la surface de couplage de lumière (5a), par exemple la première et la deuxième surface partielle formant chacune une moitié de la surface de couplage de lumière (5a), de préférence la première et la deuxième surface partielle étant éclairées sans chevauchement.
  9. Système d'éclairage (8) comprenant un dispositif d'éclairage (1) selon l'une des revendications précédentes et une unité d'éclairage (9), l'unité d'éclairage (9) étant agencée pour générer et émettre de la lumière selon une direction d'émission de lumière (10), la direction d'émission de lumière (10) étant dirigée vers le plan focal des lentilles (7) du collimateur (3) du module d'éclairage (2), le système d'éclairage (8) comprenant un dispositif de réglage (11) avec lequel l'élément optique (5) du dispositif d'éclairage (1) peut être transféré entre une première et une deuxième position, dans la première position, l'élément optique (5) est disposé de telle sorte que la lumière émise par le au moins un module de lumière (2) du dispositif d'éclairage (1) rencontre la surface de couplage de lumière (5a) de l'élément optique (5), dans la deuxième position, l'élément optique (5) est disposé de telle sorte, qu'aucune lumière émise par le au moins un module lumineux (2) du dispositif d'éclairage (1) ne rencontre la surface de couplage de lumière (5a) de l'élément optique (5) et que l'élément optique (5) se trouve en dehors de la direction d'émission de lumière (10) de la lumière pouvant être émise par l'unité d'éclairage (9).
  10. Système d'éclairage (8) selon la revendication 9, dans lequel le module d'éclairage (2) du dispositif d'éclairage (1) et l'unité d'éclairage (9) sont disposés l'un par rapport à l'autre de telle sorte que la direction de propagation de la lumière (4) du collimateur (3) du module d'éclairage (2) et la direction d'émission de lumière (10) de l'unité d'éclairage (9) forment un angle aigu l'une par rapport à l'autre.
  11. Système d'éclairage (8) selon la revendication 9 ou 10, dans lequel la direction de propagation de la lumière (4) du collimateur (3) du module d'éclairage (2) et la direction de rayonnement de la lumière (10) de l'unité d'éclairage (9) présentent un point d'intersection, le point d'intersection étant situé dans le plan focal des lentilles (7) du collimateur (3).
  12. Système d'éclairage (8) selon l'une des revendications 9 à 11, dans lequel, lorsque l'élément optique (5) est dans la première position, le au moins un module lumineux (2) du dispositif d'éclairage (1) est dans un état actif, dans lequel la lumière est émise par le au moins un module de lumière (2) sur la surface de couplage de lumière (5a), dans lequel, alors que le dispositif d'éclairage (1) est dans l'état actif, l'unité d'éclairage (9) est dans un état inactif dans lequel l'unité d'éclairage (9) n'émet pas de lumière.
  13. Système d'éclairage (8) selon l'une quelconque des revendications 9 à 12, dans lequel, lorsque l'élément optique (5) est dans la deuxième position, l'unité d'éclairage (9) est dans un état actif dans lequel la lumière est émise par l'unité d'éclairage (9) sous forme de faisceau lumineux, dans lequel, lorsque l'unité d'éclairage (9) est dans l'état actif, le au moins un module lumineux (2) du dispositif d'éclairage (1) est dans un état inactif dans lequel le au moins un module lumineux (2) n'émet pas de lumière.
  14. Système d'éclairage (8) selon l'une des revendications 9 à 13, dans lequel le système d'éclairage (8) génère une première distribution de lumière lorsque l'élément optique (5) est dans la première position et que le au moins un module d'éclairage (2) du dispositif d'éclairage (1) est dans un état actif, et génère une deuxième distribution de lumière, lorsque l'élément optique (5) est dans la deuxième position et que le module d'éclairage (9) est dans un état actif, de préférence la première et la deuxième distribution de lumière sont différentes, de préférence la première distribution de lumière comprend une distribution de lumière d'un feu de jour ou une fonction de signalisation, et la deuxième distribution de lumière comprend une distribution de lumière de croisement ou une distribution de lumière de route.
  15. Système d'éclairage (8) selon l'une des revendications 9 à 14, dans lequel le dispositif d'éclairage (1) et/ou l'unité d'éclairage (9) comporte(nt) chacun un moyen d'éclairage agencé pour produire une lumière blanche et/ou colorée.
EP20753367.0A 2019-09-06 2020-08-11 Dispositif d'éclairage pour un phare de véhicule automobile Active EP4025827B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
EP19195885.9A EP3789658A1 (fr) 2019-09-06 2019-09-06 Dispositif d'éclairage pour un phare de véhicule automobile
PCT/EP2020/072517 WO2021043544A1 (fr) 2019-09-06 2020-08-11 Dispositif d'éclairage conçu pour un phare de véhicule automobile

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EP4025827A1 EP4025827A1 (fr) 2022-07-13
EP4025827B1 true EP4025827B1 (fr) 2023-07-19

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US (1) US11796148B2 (fr)
EP (2) EP3789658A1 (fr)
JP (1) JP7241241B2 (fr)
KR (1) KR102737287B1 (fr)
CN (1) CN114286914B (fr)
WO (1) WO2021043544A1 (fr)

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WO2025098583A1 (fr) * 2023-11-06 2025-05-15 HELLA GmbH & Co. KGaA Dispositif d'éclairage pour véhicule automobile
CN120868379A (zh) * 2024-04-30 2025-10-31 法雷奥照明公司 光学组件、发光装置和车辆

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Publication number Publication date
CN114286914A (zh) 2022-04-05
US20220299182A1 (en) 2022-09-22
CN114286914B (zh) 2024-04-19
EP4025827A1 (fr) 2022-07-13
KR102737287B1 (ko) 2024-12-03
US11796148B2 (en) 2023-10-24
JP2022547104A (ja) 2022-11-10
WO2021043544A1 (fr) 2021-03-11
JP7241241B2 (ja) 2023-03-16
EP3789658A1 (fr) 2021-03-10
KR20220037519A (ko) 2022-03-24

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