EP3379142B9 - Module d'éclairage pour un phare de véhicule automobile et phare de véhicule automobile pourvu d'un tel module - Google Patents

Module d'éclairage pour un phare de véhicule automobile et phare de véhicule automobile pourvu d'un tel module Download PDF

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Publication number
EP3379142B9
EP3379142B9 EP18159791.5A EP18159791A EP3379142B9 EP 3379142 B9 EP3379142 B9 EP 3379142B9 EP 18159791 A EP18159791 A EP 18159791A EP 3379142 B9 EP3379142 B9 EP 3379142B9
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European Patent Office
Prior art keywords
light
emitting unit
light module
module
lens
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Application number
EP18159791.5A
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German (de)
English (en)
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EP3379142A1 (fr
EP3379142B1 (fr
Inventor
Joachim Knittel
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Marelli Germany GmbH
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Automotive Lighting Reutlingen GmbH
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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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • F21S41/153—Light emitting diodes [LED] arranged in one or more lines arranged in a matrix
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like shape
    • 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
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • 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
    • F21W2103/60—Projection of signs from lighting devices, e.g. symbols or information being projected onto the road

Definitions

  • the present invention relates to a light module for a motor vehicle headlight with the features of the preamble of claim 1.
  • the invention also relates to a headlight with such a light module according to the preamble of claim 13.
  • Such a light module and such a headlight are each from EP 2 674 665 A2 known. From the DE 10 2015 209 194 A1 discloses a vehicle lamp with projection optics having two lenses and thus compensating for chromatic aberrations.
  • LEDs semiconductor light sources
  • LED light modules usually include at least one bundling optics in the form of an attachment optics made of a solid transparent material, especially plastic or glass.
  • the light emitted by the semiconductor light source(s) is coupled into the attachment optics via one or more light entry surfaces, is at least partially deflected there by means of total reflection at boundary surfaces of the attachment optics and finally is coupled out of the attachment optics via one or more light exit surfaces.
  • the bundling of the light takes place through refraction when the light enters and/or exits as well as through deflection by means of total reflection.
  • a plurality of LED chips arranged next to and/or on top of one another in a matrix-like manner can be used as the light source of LED light modules, which can be controlled separately individually or in groups.
  • a number of partial light bundles can be generated, which supplement or superimpose one another to form the resulting light bundle of the light module for generating the specified light distribution.
  • selected areas of the light distribution e.g. in the area of oncoming or preceding vehicles, can be masked out in a targeted manner.
  • Better illumination of the area in front of the motor vehicle can be achieved, since it is possible to drive with high beam more often, with blinding of other road users being prevented, since areas in which they are located are blanked out in a targeted manner.
  • Such light modules are referred to as multi-beam LED modules or as matrix LED modules.
  • Multibeam LED modules currently in use include semiconductor light sources, each with 84 LED chips arranged in a matrix.
  • the light distribution of the light module is made up of 84 areas that can be hidden or illuminated individually or in groups.
  • Such a light distribution is also called Adaptive Driving Beam (ADB), called glare-free high beam or partial high beam.
  • ADB Adaptive Driving Beam
  • a light pixel corresponds to the light distribution at a distance of 100 m in front of the motor vehicle, covering an area of 1.8 x 2.4 m.
  • the motor vehicle has suitable sensors for detecting the position of other road users in the vicinity of a motor vehicle, e.g Form of a camera, and a suitable processing logic, which determines the position of the other road users from the sensor signals and generates suitable control signals for the light modules or their LED chips.
  • a matrix LED module is based on the basic structure, for example DE 100 09 782 A1 known. It shows how such a matrix LED module can be used in combination with a projection lens to generate variable light distribution. If a matrix LED module is integrated into a headlight of a motor vehicle, the light distribution can be dynamically adapted to the traffic conditions (e.g. oncoming vehicle or vehicle driving ahead) with the aim of optimal light distribution for the driver of the motor vehicle and at the same time dazzling other road users to avoid.
  • traffic conditions e.g. oncoming vehicle or vehicle driving ahead
  • LED modules include so-called pAFS (micro-structured adaptive front-lighting system) light modules, in which a matrix with currently up to 1,024 individually controllable LEDs is used.
  • pAFS micro-structured adaptive front-lighting system
  • a large number of white LEDs eg blue LEDs with an integrated converter
  • pixels eg one pixel per LED
  • Each LED emits light with a Lambertian radiation distribution in the half-space perpendicular to the light-emitting surface of the LED.
  • projection optics depict the light surface as light distribution on the roadway in front of the motor vehicle.
  • the resulting light distribution of a single light module includes, for example, 4,096 sub-areas (so-called light pixels), which can be masked out individually or in groups.
  • the light distribution is divided into 8,192 light pixels. This finer subdivision of the light distribution makes it possible to bring the illuminated areas of the light distribution closer to the position where other road users were detected, and thus to achieve improved illumination in front of the motor vehicle, but without dazzling other road users.
  • DLP digital light processing
  • micromirror array that includes a large number (e.g. more than 1 million) tiny micromirrors , which can be controlled individually and tilted at a frequency of up to 5,000 Hz.
  • a concave mirror can be used to deflect the light emitted by the LED.
  • one pixel of the light distribution corresponds to an area of just 4.0 x 2.5 cm. The condition of the individual mirrors determines the path of the light.
  • one of the micromirrors If one of the micromirrors is in its initial position, it reflects that light falling on it completely via projection optics, which is designed, for example, as a projection lens, onto the roadway in front of the motor vehicle. With a fully tilted micromirror (by about 10°), the reflected light no longer lands on the road but, for example, in a light trap, so that the corresponding light pixel is deactivated and there is an unlit spot in the light distribution. In the intermediate stages and depending on the switching frequency of the micromirrors, shades of gray (with lower brightness) can be generated at the respective light pixels. Headlights with a DLP module are also referred to as HD (high definition) headlights.
  • HD high definition
  • the light distribution must be generated as precisely as possible in front of the motor vehicle. This applies in particular when the light modules generate a shielded light distribution with a light-dark boundary between the illuminated close-up area of the light distribution and the non-illuminated long-distance area or a partial high beam with horizontal and vertical light-dark boundaries between the illuminated areas (light pixels) of the light distribution and the non-illuminated areas must.
  • the finer the subdivision of the light distribution into light pixels the more important is a highly precise positioning of the light distribution or the individual light pixels in front of the motor vehicle in order to prevent other road users from being dazzled.
  • projection optics can only sharply image light with an upwardly limited aperture angle (for example, maximum +/- 20°), it is advantageous to restrict the emission range of the light-emitting unit.
  • an upwardly limited aperture angle for example, maximum +/- 20°
  • light entering the projection optics at large angles of incidence can lead to scattered light, which further reduces the contrast of the image. This means that the accuracy of the light distribution required for pAFS modules and DLP modules cannot be achieved.
  • the object of the present invention is to provide a compact, optical projection system for matrix LEDs which prevents light from entering the projection optics at angles of incidence which are too large.
  • a light module with the features of claim 1 is proposed.
  • a light module for a headlight of a motor vehicle is proposed, the light module having a light emitting unit and projection optics with an optical axis and with at least one projection lens, which images the light emitted by the light emitting unit as the resulting light distribution of the light module on a roadway in front of the motor vehicle.
  • the light module comprises a lens which has a concavely curved exit surface on the side facing away from the light emitting unit.
  • the exit surface deflects light emitted by the light emission unit with a beam angle of more than +/- 20° to the optical axis of the projection optics and impinging on the surface of the lens towards the edge by means of total reflection, so that it no longer passes through the projection optics passes through.
  • a lens is therefore arranged in front of the light emitting unit in a main emission direction of the latter, so that the light emitted by the light emitting unit impinges on the lens.
  • the lens has an entry side directed towards the light emitting unit and an exit side facing away from the light emitting unit.
  • the exit side has a concave curvature. This causes the light emitted by the light emitting unit at large angles of more than 20° (e.g. >30°) relative to the optical axis and impinging on the exit surface to be totally reflected and discharged to the side. This prevents it from reaching the projection optics and being imaged by them.
  • the imaging properties of the projection system can be improved, in particular the contrast and sharpness of the image can be increased.
  • the use of a lens to filter out the light emitted by the light emitting unit at a large emission angle from the bundle of rays used to generate the light distribution has compared to the use of an aperture, as is the case, for example, in WO 2013/020 156 A1 is known to have clear advantages.
  • the effective surface or edge of an aperture always has a fixed position with respect to the light emitting unit.
  • the curvature of the total reflection exit surface results in a displacement of the surface sections of the exit surface effectively used for total reflection, depending on the position in the light emitting unit at which the respective point light source is arranged.
  • the surface sections used for point light sources arranged in the outer edge of the light emitting unit are higher on the exit surface (and thus have a greater curvature) than the surface sections (with less curvature) of the exit surface used for point light sources arranged in the center of the light emitting unit. This would be as if an aperture for the light beams from point light sources arranged at the outer edge of the light emitting unit were a little further outside than an aperture for the light beams from point light sources arranged in the center of the light emitting unit.
  • the individual punctiform light sources preferably emit light forwards in a main emission direction
  • using a lens increases the efficiency of the light module compared to using an aperture, since less light is lost (filtered out) with the punctiform light sources arranged on the outer edge of the light source when using a lens , is deflected towards the edge) than when using an aperture.
  • the light reflected towards the edge impinges on an outer edge of the optics, which has light-absorbing properties.
  • scattered light which could be caused by the light deflected from the exit surface to the edge, can be prevented, since the deflected light can no longer reach the projection optics and further into the resulting light distribution in an uncontrolled manner.
  • a light-absorbing layer is advantageously applied to the outer edge of the optics.
  • the point light sources arranged in a matrix-like manner are in the form of semiconductor light sources, in particular light-emitting diodes (LEDs) or semiconductor lasers.
  • LEDs light-emitting diodes
  • Such a light module is also referred to as a multi-beam LED module or as a matrix LED module.
  • the light module advantageously has over 1,000 individually controllable semiconductor light sources.
  • Such a light module is preferably a pAFS (micro-structured adaptive front-lighting system) light module, in which a small LED chip with a large number (currently up to 1,024) individually controllable LEDs is used.
  • Light beams that are emitted by the light emitting unit in a "large beam angle" within the meaning of the present invention are those light beams that are poorly, particularly blurred, imaged on the roadway due to optical aberrations on the projection optics and/or that lead to scattered light , which reduces the contrast of the picture.
  • Projection optics can usually only focus on light with an opening angle limited to approx. +/-20°. Light beams with opening angles greater than +/-20°, in particular greater than +/-30°, are thus prevented from impinging on the projection optics.
  • the entry surface of the lens facing the light emission unit can be of any desired design (eg curved). However, the entry surface of the lens facing the light emission unit is preferably flat. It is also conceivable that an antireflection layer is applied to the entry surface of the lens facing the light source, in order to prevent backscattering onto the light emitting unit.
  • the projection optics of the light module preferably includes a plurality of projection lenses arranged one behind the other in the beam path.
  • the object on which the present invention is based is also achieved by a motor vehicle headlight having the features of claim 13 .
  • This has a light module according to the invention.
  • the present invention relates to a light module and a motor vehicle headlight with such a light module.
  • a headlight 1 is an example in figure 1 shown and is used to generate a predetermined light distribution.
  • the light distribution can be any headlight function, for example low beam, high beam, fog light or any adaptive light distribution (eg partial high beam). It is also conceivable that the light distribution generated by the headlight 1 is an indication (e.g Symbol) for informing a driver of the motor vehicle or people in the vicinity of the motor vehicle about certain environmental and/or vehicle situations, which is displayed on the roadway in front of the motor vehicle.
  • the notice can be, for example, a traffic sign (to warn the driver of certain hazardous situations), a stylized pedestrian (to warn the driver of pedestrians on the side of the road), a zebra crossing (to inform pedestrians that the motor vehicle has stopped and the roadway can be crossed) , an ice crystal (to warn the driver of slippery roads), or a turn-by-turn instruction (eg arrow) of a navigation system.
  • a traffic sign to warn the driver of certain hazardous situations
  • a stylized pedestrian to warn the driver of pedestrians on the side of the road
  • a zebra crossing to inform pedestrians that the motor vehicle has stopped and the roadway can be crossed
  • an ice crystal to warn the driver of slippery roads
  • a turn-by-turn instruction eg arrow
  • the headlight 1 includes a housing 2, which is preferably made of an opaque material, in particular plastic.
  • the housing 2 has a light exit opening 4 in a light exit direction 3 which is closed by a cover plate 5 .
  • the cover plate 5 is preferably made of a transparent material, for example glass or plastic.
  • the cover plate 5 is designed without optically active elements.
  • a light module 6 is arranged inside the housing 2 Figures 2 and 3 is explained in more detail.
  • the light module 6 is used to generate the light distribution of the headlight 1 or part of the light distribution.
  • the headlight 1 is arranged anywhere on the outside, preferably in the front area of the motor vehicle.
  • the light module 6 comprises a light emission unit 10 with a plurality of punctiform arranged in a matrix Light sources 10a-10e, each of which emits light with a Lambertian radiation characteristic, and projection optics 12 with at least one projection lens 3, 4.
  • the projection optics 12 comprises two lenses 14, 16 arranged one behind the other in the beam path.
  • the projection optics 12 forms the light emitted by the light emitting unit 10 as the resulting light distribution of the light module 6 on a roadway 18 in front of the motor vehicle.
  • the roadway 18 is symbolized here by way of example by a measuring screen standing vertically at a distance in front of the vehicle.
  • the light module 6 has a lens 20 with a concavely curved exit surface 20b on the side of the lens 20 facing away from the light emitting unit 10 .
  • the exit surface 20b deflects light rays emitted by the light emitting unit 10 with a large emission angle and impinging on the exit surface 20b of the lens 20 (e.g. rays 22a and rays 22b directed towards the edge of the lens 20) by means of total reflection towards the edge, so that it no longer penetrates the projection optics 12 passes through. Only the light emitted by the light emitting unit 10 with a relatively small emission angle (e.g. rays 22c) is transmitted through the lens 20 and imaged onto the roadway 18 by the projection optics 12 .
  • a relatively small emission angle e.g. rays 22c
  • Light beams that are emitted by the light emitting unit 10 in a "large beam angle" within the meaning of the present invention are those light beams 22a, 22b that (without the lens 20) appear poorly, in particular unsharp, on the projection optics 12 due to optical aberrations the lane 18 are imaged and / or lead to scattered light, which reduces the contrast of the image on the roadway 18.
  • projection optics 12 can only produce a sharp image of light with an aperture angle that is limited to approximately +/-20°. Light beams with opening angles of greater than +/-20°, in particular greater than +/-30°, are thus prevented from impinging on the projection optics 12 in the invention.
  • the light emitting unit 10 can be designed in different ways.
  • the individual punctiform light sources 10a-10e of the light emitting unit 10 each comprise a semiconductor light source, in particular a light-emitting diode (LED).
  • the LEDs can be selectively controlled individually or in groups in order to switch the semiconductor light sources on or off or to dim them.
  • the light module 6 has, for example, over 1,000 individually controllable LEDs. These are preferably attached to a common printed circuit board (not shown) and electrically contacted via this.
  • the light module 6 can be designed as a so-called pAFS (micro-structured adaptive front-lighting system) light module.
  • the light emitting unit 10 has a semiconductor light source and a micromirror array that includes a large number of micromirrors that can be controlled and tilted individually, with each of the micromirrors forming one of the point light sources of the light emitting unit 10 .
  • the micromirror array includes, for example, at least 1 million micromirrors that can be tilted at a frequency of up to 5,000 Hz.
  • the edge of the lens 20 has optically absorbing properties.
  • an absorbing layer 24 (cf. figure 3 ) be upset.
  • the absorbent layer 24 is made of black paint, for example.
  • An entry surface 20a of the lens 20 facing the light emitting unit 10 is preferably flat.
  • An antireflection layer can be applied to the entry surface 20a in order to prevent backscattering onto the light emitting unit 10 .
  • the control of the individual pixels of the light emitting unit 10 and thus also the resulting light distribution of the light module 6 is controlled by control electronics, not shown here, as they are, for example, from FIG DE 10 2009 054 227 A1 is known.
  • the control electronics receive information about the traffic situation (eg about vehicles driving ahead or oncoming traffic) from a suitable sensor, for example a camera, and generates corresponding control signals for the punctiform light sources 10a-10e as a function of this. In this way, a glare-free high beam, for example, can be generated as light distribution.
  • a suitable sensor for example a camera
  • FIG. 2 and 3 is an external point light source 10a of the light emitting unit 10 (cf. figure 2 ) and a corresponding exemplary beam path as well as a point light source 10c arranged further inside (e.g. a central one) (cf. figure 3 ) and a corresponding exemplary beam path are shown.
  • a point light source 10c arranged further inside (e.g. a central one) (cf. figure 3 ) and a corresponding exemplary beam path are shown.
  • the radiation angles above which total reflection occurs are not symmetrical as in figure 3 .
  • the rays 22b directed towards the edge of the lens 20 are totally reflected at smaller angles than the rays 22a directed towards the center, since the curvature of the Lens 20 and the exit surface 20b increases towards the edge. This is advantageous for the imaging quality of the projection system shown, since marginal rays 22b can generally be imaged less well.
  • Achromatic systems generally consist of a combination of concave and convex lenses.

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

Claims (13)

  1. Module d'éclairage (6) pour un phare d'un véhicule automobile, le module d'éclairage (6) comprenant une unité de diffusion de lumière (10) et une optique de projection (12) avec un axe optique et au moins une lentille de projection (14, 16) qui reproduit la lumière diffusée par l'unité de diffusion de lumière (10) sous la forme d'une distribution de lumière résultante du module d'éclairage (6) sur une chaussée (18) devant le véhicule automobile, caractérisé en ce que l'unité de diffusion de lumière comprend plusieurs sources de lumière ponctuelles (10a-10e) agencées en forme de matrice, qui émettent respectivement de la lumière ayant une caractéristique de rayonnement de Lambert, en ce que dans un trajet de faisceau entre l'unité de diffusion de lumière (10) et l'optique de projection (12) est agencée une lentille (20) avec une surface de sortie (20b) incurvée de manière concave sur le côté opposé à l'unité de diffusion de lumière (10), la surface de sortie (20b) déviant, au moyen d'une réflexion totale, des faisceaux de lumière (22a, 22b) diffusés par l'unité de diffusion de lumière (10) avec un angle de rayonnement supérieur à +/-20° par rapport à l'axe optique de l'optique de projection et incidents sur la surface de sortie (20b) de la lentille (20), vers un bord, de sorte qu'ils ne passent plus à travers l'optique de projection (12).
  2. Module d'éclairage (6) selon la revendication 1, caractérisé en ce que les faisceaux de lumière (22a, 22b) réfléchis vers un bord frappent un bord extérieur de l'optique (20) qui présente des propriétés d'absorption de lumière.
  3. Module d'éclairage (6) selon la revendication 2, caractérisé en ce qu'une couche (24) absorbant de la lumière est appliquée sur le bord extérieur de l'optique (12).
  4. Module d'éclairage (6) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que les sources de lumière ponctuelles (10a-10e) de l'unité de diffusion de lumière (10) comprennent des sources de lumière à semi-conducteur, en particulier des diodes électroluminescentes.
  5. Module d'éclairage (6) selon la revendication 4, caractérisé en ce que le module d'éclairage (6) comprend plus de 1.000 sources de lumière à semi-conducteur pouvant être commandées individuellement.
  6. Module d'éclairage (6) selon la revendication 4 ou 5, caractérisé en ce que le module d'éclairage (6) est réalisé sous la forme d'un module d'éclairage µAFS (système d'éclairage avant adaptatif micro-structuré) (6) .
  7. Module d'éclairage (6) selon l'une quelconque des revendications 1 à 3, caractérisé en ce que l'unité de diffusion de lumière (10) comprend une source de lumière à semi-conducteur et un réseau de micro-miroirs, comprenant une pluralité de micro-miroirs pouvant être commandés et renversés individuellement, chacun des micro-miroirs formant l'une des sources de lumière ponctuelles (10a-10e) de l'unité de diffusion de lumière (10).
  8. Module d'éclairage (6) selon la revendication 7, caractérisé en ce que le réseau de micro-miroirs comprend au moins 106 micro-miroirs qui peuvent être renversés à une fréquence allant jusqu'à 5.000 Hz.
  9. Module d'éclairage (6) selon l'une quelconque des revendications 1 à 8, caractérisé en ce que la surface de sortie (20b) de la lentille (20) dévie des faisceaux de lumière (22a, 22b) diffusés par l'unité de diffusion de lumière (10) avec un angle de rayonnement >30° et incidents sur la surface de sortie (20) de la lentille (20), au moyen d'une réflexion totale vers un bord.
  10. Module d'éclairage (6) selon l'une quelconque des revendications 1 à 9, caractérisé en ce qu'une surface d'entrée (20a) de la lentille (20) tournée vers l'unité de diffusion de lumière (10) est réalisée de manière plane.
  11. Module d'éclairage (6) selon l'une quelconque des revendications 1 à 10, caractérisé en ce qu'une couche anti-réflexion est appliquée sur une surface d'entrée (20a) de la lentille (20) tournée vers l'unité de diffusion de lumière (10).
  12. Module d'éclairage (6) selon l'une quelconque des revendications 1 à 11, caractérisé en ce que l'optique de projection (12) comprend plusieurs lentilles de projection (14, 16) agencées les unes derrière les autres dans le trajet de faisceau.
  13. Phare (1) d'un véhicule automobile, le phare (1) comprenant un boîtier (2) avec une ouverture de sortie de lumière (4) fermée par une vitre de recouvrement (5) transparente et avec un module d'éclairage (6) agencé dans le boîtier (2), qui reproduit une distribution de lumière résultante à travers la vitre de recouvrement (5) sur une chaussée (18) devant le véhicule automobile, caractérisé en ce que le module d'éclairage (6) est réalisé selon l'une quelconque des revendications 1 à 12.
EP18159791.5A 2017-03-20 2018-03-02 Module d'éclairage pour un phare de véhicule automobile et phare de véhicule automobile pourvu d'un tel module Active EP3379142B9 (fr)

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DE102017105888.5A DE102017105888A1 (de) 2017-03-20 2017-03-20 Lichtmodul für einen Kraftfahrzeugscheinwerfer und Scheinwerfer mit einem solchen Lichtmodul

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EP3379142B1 (fr) 2022-06-29
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