EP3844436B1 - Motor vehicle light module comprising a plurality of light guides - Google Patents

Motor vehicle light module comprising a plurality of light guides Download PDF

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Publication number
EP3844436B1
EP3844436B1 EP19753006.6A EP19753006A EP3844436B1 EP 3844436 B1 EP3844436 B1 EP 3844436B1 EP 19753006 A EP19753006 A EP 19753006A EP 3844436 B1 EP3844436 B1 EP 3844436B1
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EP
European Patent Office
Prior art keywords
guides
light
light module
junction
central
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
EP19753006.6A
Other languages
German (de)
French (fr)
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EP3844436A1 (en
Inventor
Julien Aubert
Hugo MESTRE
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.)
Valeo Vision SAS
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Valeo Vision SAS
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Publication date
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Publication of EP3844436A1 publication Critical patent/EP3844436A1/en
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/24—Light guides
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—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
    • 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
    • F21S41/10—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
    • 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
    • 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
    • F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
    • F21W2102/10—Arrangement or contour of the emitted light
    • F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
    • F21W2102/135—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions
    • F21W2102/14—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users
    • F21W2102/145—Arrangement or contour of the emitted light for high-beam region or low-beam region the light having cut-off lines, i.e. clear borderlines between emitted regions and dark regions having vertical cut-off lines; specially adapted for adaptive high beams, i.e. wherein the beam is broader but avoids glaring other road users wherein the light is emitted between two parallel vertical cutoff lines, e.g. selectively emitted rectangular-shaped high beam
    • 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 light module for a motor vehicle.
  • the invention relates to a light module comprising a plurality of light guides and capable of generating a pixelated light beam.
  • light modules capable of generating a pixelated beam whose projection forms an image composed of illumination units, also called "pixels" in English. Said units are organized in at least one horizontal and/or vertical row and each of the illumination units can be selectively activated.
  • Such a light module is used in addition to a second light module capable of generating a main lighting and signaling beam to form a lighting and signaling beam integrating one or more adaptive functions.
  • the pixelated beam is illuminated with a portion of the high beam in order to produce an adaptive driving function, called ADB, for “Adaptive Driving Beam” in English.
  • ADB adaptive Driving Beam
  • This function makes it possible to form a beam with a shadow zone arranged at the level of a vehicle coming in front and/or at the level of a vehicle being followed.
  • This function aims to provide better visibility to the driver of the vehicle while avoiding dazzling the driver of the vehicle coming in front and/or the vehicle being followed.
  • the light beam must include an area requiring powerful lighting.
  • the illuminance thereof must respect a high value which is either imposed by regulations or set by automobile manufacturers.
  • the required illuminance value must be obtained at least at a central segment of the beam.
  • This central segment is in particular in the form of a light strip composed of at least one illumination unit.
  • the light module generating the pixelated beam must produce at least one illumination unit constituting the central segment, called the central illumination unit, which presents the desired illumination.
  • the central illumination unit here is a high intensity illumination unit.
  • the light module comprises a plurality of light guides arranged in a horizontal row.
  • Each of these guides extends between an entry diopter and an exit.
  • a guide is placed in the middle of the horizontal row and is called a central guide.
  • the central guide helps generate the central illumination unit.
  • a powerful light source is placed in front of the entrance diopter of the central guide so that the central illumination unit presents the desired illuminance.
  • the powerful light source can be a multi-chip light-emitting diode, in particular with three chips.
  • the light guides there are at least two light guides which meet upstream of the other guides and also upstream of the focal surface. These two light guides form a set, called a special set.
  • each of the guides of said particular assembly is therefore arranged at the level of their junction with each other, the two guides joining there into a single guide forming the terminal portion of said particular assembly.
  • the downstream end of this terminal portion forms the outlet of said particular assembly.
  • the particular set of two light guides includes two input diopters and a single output. Two distinct light sources can therefore be placed respectively in front of the two entry diopters of this assembly.
  • these two light sources can be chosen cleverly so that when we add the luminous flux at the output of each of the guides of the assembly, we obtain the resulting luminous flux, at the output of the assembly particular, which is equal to the luminous flux at the exit of the state-of-the-art light guide.
  • said state-of-the-art light guide is the one which contributes to generating a high intensity illumination unit.
  • the two light sources can be light sources consuming less energy and having a lower lighting power than the single, more powerful light source of the state of the art.
  • the light sources cooperating with said particular assembly can be single-chip light-emitting diodes, whereas in the prior art, the diodes electroluminescents used for the maximum of a lighting beam, in particular a high beam, are generally tri-chip light emitting diodes.
  • such light sources cost less than the single powerful light source of the state of the art, which makes it possible to reduce the cost of manufacturing the light module according to the invention.
  • two of these sources cost less than just one of the single source used in the state of the art.
  • the invention also relates to a lighting device comprising a first light module arranged so as to generate a primary portion of the road beam.
  • Said device further comprises a light module according to the invention, called a second light module, arranged so as to generate a secondary portion of the road beam complementary to the primary portion generated by the first module.
  • upstream and downstream refer to the direction of propagation of light in the object to which they refer and also to the direction of emission of light outside said object.
  • the vertical direction is represented by the axis V illustrated on the figures 1 to 4 .
  • the horizontal designates all orientations which belong to or which are parallel to a plane passing the L axis and the T axis illustrated on the figures 1 to 4 .
  • a light module 1 is intended to generate a light beam in the direction of an optical axis I.
  • the light module 1 comprises a part 2 carrying a plurality of light guides 10 and a lens primary 6. The latter is placed at a distance and downstream from part 2 so as to receive the light rays coming out of said part 2.
  • the part 2 carrying all the light guides is hereinafter called the guide part 2.
  • This guide part 2 comprises a first portion 21 from which the light guides 10 extend longitudinally upstream.
  • the first portion 21 comprises a first face 210 disposed facing the primary lens 6 and slightly curved in the direction away from said primary lens 6. In other words, the first portion 21 of the part 2 is concave.
  • the light guides 10 form a second portion 22 of the part 2. Said guides 10 are aligned so as to form a horizontal row 15 of guides. In addition, these light guides 10 are arranged in a fan shape. In fact, the light guides 10 extend, here, in a direction slightly inclined relative to the longitudinal direction L parallel to the optical axis I.
  • the light guides 10 are eight in number and arranged on either side of the optical axis I.
  • the first half 11 of the light guides 10 is located to the left of the axis optical I relative to the direction of light emission. Said first half 11 of the light guides are inclined to the right.
  • the second half 12 of the guides is located to the right of the optical axis I relative to the direction of light emission. Said second half 12 of the light guides are inclined to the left.
  • the first half 11 and the second half 12 of the light guides are mirror symmetrical with respect to the optical axis I.
  • the respective axes of the light guides 10 converge at a fictitious common point.
  • the terms “left” and “right” are defined in relation to the direction of propagation of light inside the light module 1 and outside said module 1.
  • the terms “left” and “right” correspond respectively to the left and right of the figures 1 , 3 And 4 .
  • each light guide 10 has a variable section lengthwise.
  • the section of each light guide 10 increases from upstream to downstream.
  • the light guides 10 do not have the same thickness.
  • thickness we mean the dimension measured in the lateral direction represented by the axis T on the figures 1 to 4 .
  • the thickness of the light guides 10 varies depending on the location of these guides in row 15. Here, the further the light guide moves away from the optical axis I, the thicker it is. This characteristic is clearly observed on the Figure 3 .
  • the light guides 31 and 38, located respectively at the left end 151 and the right end 152 of row 15, are the thickest guides of row 15.
  • the adjacent light guides 10 are joined to each other by a material junction.
  • the light guides 10 are classified into two categories of guides: the primary guides 3 and the secondary guides 4.
  • the difference between the primary guides 3 and the secondary guides 4 lies in the fact that the junction between the adjacent secondary guides 4 is located upstream of the junction between the primary guides 3. This difference will be explained in detail later in the description.
  • the light module 1 comprises two secondary guides 4 located in the middle of the horizontal row 15 of guides.
  • these secondary guides 4 are hereinafter called the central guides 4.
  • These central guides 4 are arranged on either side of the optical axis I of the light module, including a first central guide 41 located to the left of the optical axis I and a second central guide 42 located to the right of the same axis I.
  • All light guides 10, regardless of their category, include an entrance diopter 30, 410 or 420. Seen from the side, all light guides 10 have a curved profile so that the entrance diopters are facing upwards, as shown in the figure 2 .
  • Light sources 9 can be arranged opposite the entrance diopters of all or part of the light guides 10.
  • the primary lens 6 is placed at a distance and downstream of the part 2 so as to receive the rays emerging from the first face 210 of said part 2.
  • the primary lens 6 comprises here, at the rear, a downstream face 62, and at the front, an upstream face 61.
  • the upstream face 61 is less curved than the downstream face 62.
  • the primary lens 6 is arranged so as to form a focal surface F represented by the dotted line on the Figure 4 .
  • the primary lens 6 therefore forms a projection system for the guide outlets 10 of part 2.
  • THE figures 3 And 4 respectively represent a rear view and a top view of the second portion 22 of part 2 to better show the difference in level between the junction of the primary guides 3 and the junction of the central guides 4.
  • the light module 1 comprises six primary guides 3, including three guides counted from a left end 151 of the horizontal row 15 and three other guides counted from a right end 152 of the same row 15.
  • the primary guides 3 each include an input diopter 30 and an output 39.
  • the outputs 39 of the primary guides 3 are illustrated by mixed lines on the Figure 3 .
  • the exit, referenced 398 is a surface delimited vertically by an upper face 381 and by a lower face 382 of said primary guide 38.
  • the outlet 398 is also delimited laterally by a vertical edge 313 of a right lateral face 34 of the guide 38 and by a junction 331 with the adjacent primary guide, located to the left of said guide 38.
  • the adjacent primary guide is referenced 37 on there Figure 3 .
  • the exit from the left end primary guide 31 is defined in a similar manner.
  • the primary guide 37 adjacent to the right end guide 38 its outlet, referenced 397, is a surface delimited vertically by an upper face 371 and by a lower face 372. Said outlet 397 is delimited laterally by a first junction 331 with the right end primary guide 38 and by a second junction 332 with the primary guide located to the left of the primary guide 37.
  • the primary guide located to the left of the primary guide 37 is referenced 36 on the Figure 3 .
  • the junctions 33 , 331, 332 of the primary guides 3 are hereinafter called the primary junctions 33, 331, 332.
  • the angular spacing between the first central guide 41 and the second central guide 42 can be a value between 5° and 15°.
  • the angular spacing is defined by the angle ⁇ formed by the right side face 415 of the first central guide 41 and the left side face 425 of the second central guide 42.
  • the central junction 43 is located upstream with respect to the primary junctions 33, 331, 332. Consequently, the outlets of the central guides 4 are also located upstream of the outlets 33 of the primary guides 3.
  • the first central guide 41 comprises an entry diopter 410 and an exit 419 marked by small dashes on these figures 3 And 4 .
  • the outlet 419 of the first central guide 41 is hereinafter called the first outlet 419.
  • the first outlet 419 is a surface delimited vertically by an upper face 411 and by a lower face 412 of the first central guide 41.
  • the first outlet 419 is also delimited laterally by the central junction 43 and, here, by a substantially vertical line 414 belonging to a left side face 413 of the first central guide 41. This vertical line 414 is located at the central junction 43.
  • this includes an entry diopter 420 and an exit 429 also marked by a line of small dashes on the figures 3 And 4 .
  • the outlet 429 of the first central guide 41 is hereinafter called the second outlet 429.
  • the second outlet 429 is a surface delimited vertically by an upper face 421 and by a lower face 422 of said second central guide 42.
  • the second outlet 429 is also delimited laterally by the central junction 43 and by a substantially vertical line 424 belonging to a right side face 423 of the second central guide 42. This vertical line 424 is located at the central junction 43.
  • the first and second central guides 41 and 42 thus arranged, form a set of two central guides, called a particular set 5.
  • the first central guide 41 and the second central guide 42 unite into a single guide, forming a terminal portion 51 of the particular assembly 5.
  • the downstream end of the terminal portion 51 forms the outlet 52 of the particular assembly 5.
  • the terminal portion 51 is delimited longitudinally by the first and second outlets 419, 429 on the one hand and by the outlet 52 of the 'particular set 5 on the other hand.
  • the outlet 52 of the particular assembly 5 is delimited laterally by a third junction 333 between the second central guide 42 and the primary guide 36 located to the right of said second guide 42, and by a fourth junction 334 between the first central guide 41 and the primary guide located to the left of said first guide 41, referenced 32 on the figures 3 And 4 .
  • the outlet 52 of the particular assembly 5 is arranged at the level of the junction 334 between the first central guide 41 and the neighboring primary guide 32 on the left and at the level of the junction 333 between the second central guide 42 and the neighboring primary guide 36 on the right.
  • the outlet 52 of the particular assembly 5 is distinct from the first outlet 419 and the second outlet 429, and is located downstream of said outlets 419 and 429.
  • the focal surface F of the primary lens 6 is arranged so as to be as close as possible to the outlets 39 of primary guides 3 and to the outlet 52 of the particular assembly 5. In this way, the light rays coming out of the primary guides 3 and the particular assembly 5 are imaged by the primary lens 6 while minimizing optical field aberrations.
  • the focal surface F has a degree of curvature substantially similar to that of the first face 210 of part 2.
  • the central junction 43 is further from the focal surface F than the primary junctions 33, 331, 332 are with respect to said focal surface F.
  • the distance d 1 between the focal surface F and the central junction 43 is greater at the distance d 2 between the focal surface F and the primary junctions, in particular the second primary junction 332.
  • Two light sources 9 are arranged opposite the entrance diopters of the central guides 4.
  • a first light source 91 is placed opposite the entrance diopter 410 of the first central guide 41 while a second light source 92 is placed opposite the entrance diopter 420 of the second central guide 42.
  • the first light source 91 is spaced laterally from the second light source 92 by a value of between 3 mm and 7 mm.
  • the lateral distance between the first light source 91 and the second light source 92 is represented by the reference “d 3 ”.
  • the first and second light sources 91 and 92 may be single-chip light-emitting diodes.
  • the first light source 91 emits light rays which propagate inside the first central guide 41 as far as the first outlet 419.
  • the second light source 92 emits light rays which propagate inside from the second central guide 42 to the second outlet 429.
  • the light rays arrive in the terminal portion 51 where said rays can mix.
  • walls delimiting this portion reflect the light rays so as to form a collimated and homogeneous light beam at the outlet 52.
  • this collimated and homogeneous beam reaches the focal surface F and is projected by the primary lens 6 , forming an image including a high intensity illumination unit.
  • FIG 5 illustrates by way of example and schematically an image I1 of the light beam generated from the two light sources 91 and 92 and the light module 1.
  • the image I1 is obtained, for example, on a screen located 25 m of the light module 1.
  • the image I1 includes an illumination unit 8 of rectangular shape and has a high light intensity.
  • the illumination unit 8 can have a maximum illuminance of 110 lux.
  • the illumination unit 8 obtained has a fairly regular rectangular shape.
  • said illumination unit 8 when placed with other illumination units (not shown) corresponding to the primary guides 3, contributes to forming a homogeneous pixelated light beam. The quality of said beam is therefore improved, which provides better visibility comfort for the driver.
  • the image obtained by the light module 1 will be different from the image I1 illustrated.
  • the resulting image will include a light strip with a high intensity illumination unit in the middle.
  • the light module 1 can be installed in a front lighting device of a motor vehicle.
  • This lighting device can be designed to project a high beam.
  • the lighting device comprises a first light module arranged so as to generate a primary portion of the road beam.
  • the light module 1 described above, called the second light module is arranged so as to generate a secondary portion of the high beam. Said secondary portion is complementary to the primary portion of the high beam and can be located above the cut-off line of a low beam.

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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)
  • Optical Couplings Of Light Guides (AREA)

Description

L'invention a trait à un module lumineux de véhicule automobile. Particulièrement, l'invention a trait à un module lumineux comportant une pluralité de guides de lumière et apte à générer un faisceau lumineux pixélisé.The invention relates to a light module for a motor vehicle. Particularly, the invention relates to a light module comprising a plurality of light guides and capable of generating a pixelated light beam.

De manière connue, il existe des modules lumineux aptes à générer un faisceau pixélisé dont la projection forme une image composée d'unités d'illumination, encore appelées « pixels » en anglais. Lesdites unités sont organisées en au moins une rangée horizontale et/ou verticale et chacune des unités d'illumination peut être activée sélectivement.In known manner, there are light modules capable of generating a pixelated beam whose projection forms an image composed of illumination units, also called "pixels" in English. Said units are organized in at least one horizontal and/or vertical row and each of the illumination units can be selectively activated.

Un tel module lumineux est utilisé en complément avec un deuxième module lumineux apte à générer un faisceau d'éclairage et de signalisation principal pour former un faisceau d'éclairage et de signalisation intégrant une ou plusieurs fonctions adaptatives.Such a light module is used in addition to a second light module capable of generating a main lighting and signaling beam to form a lighting and signaling beam integrating one or more adaptive functions.

A titre d'exemple, le faisceau pixélisé est éclairé avec une portion de faisceau route afin de réaliser une fonction de route adaptative, dite ADB, pour « Adaptative Driving Beam » en anglais. Cette fonction permet de former un faisceau avec une zone d'ombre agencée au niveau d'un véhicule venant en face et/ou au niveau d'un véhicule suivi. Cette fonction a pour but d'offrir une meilleure visibilité au conducteur du véhicule tout en évitant d'éblouir le conducteur du véhicule venant en face et/ou du véhicule suivi.For example, the pixelated beam is illuminated with a portion of the high beam in order to produce an adaptive driving function, called ADB, for “Adaptive Driving Beam” in English. This function makes it possible to form a beam with a shadow zone arranged at the level of a vehicle coming in front and/or at the level of a vehicle being followed. This function aims to provide better visibility to the driver of the vehicle while avoiding dazzling the driver of the vehicle coming in front and/or the vehicle being followed.

Des modules lumineux connus sont divulgués dans les documents US 2006087861 , US 2015226395 , WO 2017106891 et US 2014133168 .Known light modules are disclosed in the documents US 2006087861 , US 2015226395 , WO 2017106891 And US 2014133168 .

Dans certaines applications, le faisceau lumineux doit comprendre une zone nécessitant un éclairage puissant. Notamment, dans le cas d'un faisceau route, l'éclairement de celui-ci doit respecter une valeur élevée qui est, soit imposée par des réglementations, soit fixée par des constructeurs automobiles.In some applications, the light beam must include an area requiring powerful lighting. In particular, in the case of a main beam, the illuminance thereof must respect a high value which is either imposed by regulations or set by automobile manufacturers.

Dans la configuration où le faisceau route est formé au moins en partie d'un faisceau pixélisé, la valeur d'éclairement requise doit être obtenue au moins au niveau d'un segment central du faisceau. Ce segment central se présente notamment sous forme d'une bande lumineuse composée d'au moins une unité d'illumination. En d'autres termes, le module lumineux générant le faisceau pixélisé doit produire au moins une unité d'illumination constituant le segment central, dite unité d'illumination centrale, qui présente l'éclairement souhaité. L'unité d'illumination centrale est ici une unité d'illumination à forte intensité.In the configuration where the main beam is formed at least in part from a pixelated beam, the required illuminance value must be obtained at least at a central segment of the beam. This central segment is in particular in the form of a light strip composed of at least one illumination unit. In other words, the light module generating the pixelated beam must produce at least one illumination unit constituting the central segment, called the central illumination unit, which presents the desired illumination. The central illumination unit here is a high intensity illumination unit.

Pour ce faire, le module lumineux comprend une pluralité de guides de lumière disposés en une rangée horizontale. Chacun de ces guides s'étend entre un dioptre d'entrée et une sortie. Parmi ces guides, un guide est disposé au milieu de la rangée horizontale et est dit guide central.To do this, the light module comprises a plurality of light guides arranged in a horizontal row. Each of these guides extends between an entry diopter and an exit. Among these guides, a guide is placed in the middle of the horizontal row and is called a central guide.

Le guide central participe à générer l'unité d'illumination centrale. De manière générale, une source lumineuse puissante est placée devant le dioptre d'entrée du guide central pour que l'unité d'illumination centrale présente l'éclairement souhaité. A titre d'exemple, la source lumineuse puissante peut être une diode électroluminescente multi-puces, notamment à trois puces.The central guide helps generate the central illumination unit. Generally speaking, a powerful light source is placed in front of the entrance diopter of the central guide so that the central illumination unit presents the desired illuminance. For example, the powerful light source can be a multi-chip light-emitting diode, in particular with three chips.

Toutefois, une telle source lumineuse a un coût élevé, ce qui impacte le coût de fabrication global du dispositif d'éclairage comprenant le module lumineux et la source lumineuse puissante.However, such a light source has a high cost, which impacts the overall manufacturing cost of the lighting device comprising the light module and the powerful light source.

Il y a donc un besoin de réduire le coût de fabrication des modules lumineux générant les faisceaux lumineux nécessitant une zone fortement éclairée, tout en respectant la valeur d'éclairement demandée.There is therefore a need to reduce the manufacturing cost of light modules generating light beams requiring a strongly illuminated area, while respecting the requested illuminance value.

A cet effet, un premier objet de l'invention est un module lumineux de véhicule, comprenant :

  • une pièce comprenant une pluralité de guides de lumière, chacun desdits guides s'étendant entre un dioptre d'entrée de ce guide et une sortie, les guides de lumière adjacents se joignant l'un à l'autre par une jonction de matière ;
  • plusieurs sources lumineuses agencées vis-à-vis des dioptres d'entrée de tout ou partie des guides de lumière ;
  • un système de projection en aval des sorties de guide et présentant une surface focale projetant une image de tout rayon lumineux passant par ladite surface focale
  • - au moins deux guides dont la distance entre la surface focale et la jonction desdits deux guides est supérieure à la distance entre la surface focale et la jonction des autres guides. Selon l'invention, le module lumineux est apte à générer au faisceau lumineux pixélisé, et les au moins deux guides dont la distance entre la surface focale et la jonction desdits deux guides, est supérieure à la distance entre la surface focale et la jonction des autres guides sont dits guides secondaires, les autres guides étant dits guides primaires, chaque guide primaire formant dans le faisceau une unité d'illumination primaire dans le faisceau et les guides secondaires formant ensemble une seule unité d'illumination secondaire dans le faisceau, les unités d'illumination étant agencées de manière adjacente en au moins une rangée et pouvant être activées sélectivement, et l'unité d'illumination secondaire présente une intensité supérieure à l'intensité de chaque unité d'illumination primaire.
For this purpose, a first object of the invention is a vehicle light module, comprising:
  • a part comprising a plurality of light guides, each of said guides extending between an entrance diopter of this guide and an exit, the adjacent light guides joining one to the other by a material junction;
  • several light sources arranged opposite the entrance diopters of all or part of the light guides;
  • a projection system downstream of the guide outputs and having a focal surface projecting an image of any light ray passing through said focal surface
  • - at least two guides whose distance between the focal surface and the junction of said two guides is greater than the distance between the focal surface and the junction of the other guides. According to the invention, the light module is capable of generating a pixelated light beam, and the at least two guides whose distance between the focal surface and the junction of said two guides is greater than the distance between the focal surface and the junction of the other guides are called secondary guides, the other guides being called primary guides, each primary guide forming in the beam a primary illumination unit in the beam and the secondary guides together forming a single secondary illumination unit in the beam, the units illumination being arranged adjacently in at least one row and being able to be selectively activated, and the secondary illumination unit has an intensity greater than the intensity of each primary illumination unit.

En d'autres termes, parmi tous les guides de lumière, il y a au moins deux guides de lumière qui se rejoignent en amont des autres guides et également en amont de la surface focale. Ces deux guides de lumière forment un ensemble, dit ensemble particulier.In other words, among all the light guides, there are at least two light guides which meet upstream of the other guides and also upstream of the focal surface. These two light guides form a set, called a special set.

La sortie de chacun des guides dudit ensemble particulier est donc agencée au niveau de leur jonction entre eux, les deux guides s'y rejoignant en un seul guide formant la portion terminale dudit ensemble particulier. L'extrémité aval de cette portion terminale forme la sortie dudit ensemble particulier.The outlet of each of the guides of said particular assembly is therefore arranged at the level of their junction with each other, the two guides joining there into a single guide forming the terminal portion of said particular assembly. The downstream end of this terminal portion forms the outlet of said particular assembly.

Nous allons expliquer ci-après l'avantage d'un ensemble particulier, constitué de deux guides de lumière dont la jonction est en amont par rapport aux jonctions des autres guides. Bien entendu, le même avantage s'applique à d'autres ensembles particuliers comprenant plus de deux guides de lumière qui se joignent en amont par rapport aux autres guides.We will explain below the advantage of a particular assembly, consisting of two light guides whose junction is upstream in relation to the junctions of the other guides. Of course, the same advantage applies to other particular assemblies comprising more than two light guides which join upstream of the other guides.

L'ensemble particulier de deux guides de lumière comprend deux dioptres d'entrée et une seule sortie. Deux sources lumineuses distinctes peuvent donc être placées respectivement devant les deux dioptres d'entrée de cet ensemble.The particular set of two light guides includes two input diopters and a single output. Two distinct light sources can therefore be placed respectively in front of the two entry diopters of this assembly.

Les rayons lumineux de ces deux sources lumineuses distinctes se mélangent à l'intérieur de l'ensemble particulier, précisément dans la portion terminale dudit ensemble, et ce en amont de la seule sortie dudit ensemble particulier. Ainsi, on obtient un flux lumineux résultant à la sortie de l'ensemble particulier qui est la somme du flux lumineux à la sortie de chacun des guides de l'ensemble.The light rays from these two distinct light sources mix inside the particular assembly, precisely in the terminal portion of said assembly, and this upstream of the only outlet of said particular assembly. Thus, we obtain a resulting luminous flux at the exit of the particular assembly which is the sum of the luminous flux at the exit of each of the guides of the assembly.

Par conséquent, ces deux sources lumineuses peuvent être choisies astucieusement de manière à ce que lorsque l'on additionne le flux lumineux à la sortie de chacun des guides de l'ensemble, on obtienne le flux lumineux résultant, à la sortie de l'ensemble particulier, qui est égal au flux lumineux à la sortie du guide de lumière de l'état de l'art. Pour rappel, ledit guide de lumière de l'état de l'art est celui qui participe à générer une unité d'illumination à forte intensité.Consequently, these two light sources can be chosen cleverly so that when we add the luminous flux at the output of each of the guides of the assembly, we obtain the resulting luminous flux, at the output of the assembly particular, which is equal to the luminous flux at the exit of the state-of-the-art light guide. As a reminder, said state-of-the-art light guide is the one which contributes to generating a high intensity illumination unit.

Concrètement, les deux sources lumineuses peuvent être des sources lumineuses consommant moins d'énergie et présentant une puissance d'éclairage plus faible que la seule source lumineuse plus puissante de l'état de l'art. Notamment, selon l'invention, les sources lumineuses coopérant avec ledit ensemble particulier peuvent être des diodes électroluminescentes mono-puces, alors que dans l'art antérieur, les diodes électroluminescentes utilisées pour le maximum d'un faisceau d'éclairage, notamment un faisceau route, sont généralement des diodes électroluminescentes tri-puces.Concretely, the two light sources can be light sources consuming less energy and having a lower lighting power than the single, more powerful light source of the state of the art. In particular, according to the invention, the light sources cooperating with said particular assembly can be single-chip light-emitting diodes, whereas in the prior art, the diodes electroluminescents used for the maximum of a lighting beam, in particular a high beam, are generally tri-chip light emitting diodes.

De manière générale, de telles sources lumineuses coûtent moins cher que la seule source lumineuse puissante de l'état de l'art, ce qui permet de réduire le coût de fabrication du module lumineux selon l'invention. Notamment, deux de ces sources coûtent moins cher qu'une seule de la source unique employée dans l'état de l'art.Generally speaking, such light sources cost less than the single powerful light source of the state of the art, which makes it possible to reduce the cost of manufacturing the light module according to the invention. In particular, two of these sources cost less than just one of the single source used in the state of the art.

Autrement dit, grâce à la configuration particulière du module lumineux selon l'invention, les composants moins coûteux, ici des sources lumineuses moins puissantes, peuvent être utilisés tout en gardant la même efficacité du faisceau généré.In other words, thanks to the particular configuration of the light module according to the invention, less expensive components, here less powerful light sources, can be used while maintaining the same efficiency of the beam generated.

Ainsi, grâce au module lumineux selon l'invention, le problème technique par rapport à l'état de l'art est résolu.Thus, thanks to the light module according to the invention, the technical problem compared to the state of the art is solved.

Le module lumineux selon l'invention présente les caractéristiques suivantes :

  • le module lumineux est apte à générer un faisceau lumineux pixélisé ;
  • les au moins deux guides dont la distance entre la surface focale et la jonction desdits deux guides, est supérieure à la distance entre la surface focale et la jonction des autres guides sont dits guides secondaires, les autres guides étant dits guides primaires, chaque guide primaire formant une unité d'illumination primaire dans le faisceau et les guides secondaires formant ensemble une seule unité d'illumination secondaire dans le faisceau, les unités d'illumination étant agencées de manière adjacente en au moins une rangée et pouvant être activées sélectivement ;
  • l'unité d'illumination secondaire présente une intensité supérieure à l'intensité de chaque unité d'illumination primaire.
The light module according to the invention has the following characteristics:
  • the light module is capable of generating a pixelated light beam;
  • the at least two guides whose distance between the focal surface and the junction of said two guides is greater than the distance between the focal surface and the junction of the other guides are called secondary guides, the other guides being called primary guides, each primary guide forming a primary illumination unit in the beam and the secondary guides together forming a single secondary illumination unit in the beam, the illumination units being arranged adjacently in at least one row and capable of being selectively activated;
  • the secondary illumination unit has an intensity greater than the intensity of each primary illumination unit.

Le module lumineux selon l'invention peut optionnellement présenter une ou plusieurs caractéristiques suivantes :

  • les guides de lumière sont disposés en une rangée horizontale ; et les deux guides, dont la distance entre leur jonction et la surface focale est supérieure à la distance entre la surface focale et la jonction des autres guides, sont placés au milieu de ladite rangée horizontale, et sont dits guides centraux ; un module lumineux ainsi arrangé peut être utilisé pour générer au moins une portion de faisceau route qui comprend la zone fortement éclairée demandée ;
  • le module lumineux est destiné à générer un faisceau lumineux suivant un axe optique, et en ce que les guides centraux sont en nombre égal de part et d'autre dudit axe optique ; le module lumineux, ainsi disposé, peut générer au moins une unité d'illumination centrale, symétrique par rapport à l'axe optique du module ;
  • selon les deux derniers alinéas, les guides centraux sont au nombre de deux ; selon une configuration du module lumineux, deux guides centraux sont suffisants pour créer une unité d'illumination centrale présentant l'éclairement souhaité ; de plus, deux guides centraux restent simples à réaliser ;
  • selon l'un quelconque des alinéas précédents, une diode électroluminescente mono-puce est placée devant le dioptre d'entrée de chaque guide central ; la diode électroluminescente mono-puce coûte moins cher qu'une diode électroluminescente multi-puces ; il s'agit donc d'une alternative économique à la source lumineuse puissante ;
  • les diodes électroluminescentes mono-puce sont agencées sur un circuit imprimé selon une technologie de montage en surface ; les diodes électroluminescentes, réalisées selon cette technologie, sont soudées sur le circuit imprimé ; ce dernier peut être relié à un radiateur permettant d'évacuer la chaleur dégagée par ce circuit ; de manière générale, les diodes électroluminescentes soudées sur le circuit imprimé coûtent moins chères que lorsqu'elles sont collées directement au radiateur ;
  • l'écartement angulaire entre les deux guides centraux est un angle compris entre 5° et 15° ;
  • la distance entre la surface focale et la jonction des guides centraux, dite première distance d1, est supérieure à 0,5 mm ; à titre d'exemple, la première distance d1 peut être comprise entre 1.5 mm et 15 mm ;
  • la distance entre la surface focale et la jonction des guides autres que les guides centraux, dite deuxième distance d2, est comprise entre 1 mm et 4 mm ;
  • le module lumineux comprend, par exemple, huit guides de lumière ;
  • les unités d'illumination sont des bandes lumineuses ;
  • l'unité d'illumination secondaire est centrale ; par exemple dans le cas de l'alinéa précédent, l'unité d'illumination secondaire forme une bande lumineuse centrale ;
  • le module lumineux est agencé de manière à générer un faisceau lumineux formant une portion de faisceau route ;
  • le système de projection comprend une lentille primaire recevant les rayons sortant des sorties des guides lumière et les projetant vers l'infini ;
  • selon l'alinéa précédent, la pièce comportant les guides de lumière et la lentille primaire sont venues de matière en une seule pièce monobloc ; ainsi, cela permet de réduire le nombre de composants distincts du module lumineux et de simplifier le montage dudit module.
The light module according to the invention may optionally have one or more of the following characteristics:
  • the light guides are arranged in a horizontal row; and the two guides, whose distance between their junction and the focal surface is greater than the distance between the focal surface and the junction of the other guides, are placed in the middle of said horizontal row, and are called central guides; a light module thus arranged can be used to generate at least one portion of the high beam which includes the requested highly illuminated area;
  • the light module is intended to generate a light beam along an optical axis, and in that the central guides are in equal number on either side of said axis optics; the light module, thus arranged, can generate at least one central illumination unit, symmetrical with respect to the optical axis of the module;
  • according to the last two paragraphs, the central guides are two in number; according to a configuration of the light module, two central guides are sufficient to create a central illumination unit having the desired illuminance; in addition, two central guides remain simple to make;
  • according to any of the preceding paragraphs, a single-chip light-emitting diode is placed in front of the input diopter of each central guide; single-chip light-emitting diode costs less than multi-chip light-emitting diode; it is therefore an economical alternative to the powerful light source;
  • the single-chip light-emitting diodes are arranged on a printed circuit using surface-mount technology; the light-emitting diodes, made using this technology, are soldered onto the printed circuit; the latter can be connected to a radiator allowing the heat released by this circuit to be evacuated; generally speaking, light-emitting diodes soldered to the printed circuit cost less than when they are glued directly to the radiator;
  • the angular spacing between the two central guides is an angle between 5° and 15°;
  • the distance between the focal surface and the junction of the central guides, called the first distance d1, is greater than 0.5 mm; for example, the first distance d 1 can be between 1.5 mm and 15 mm;
  • the distance between the focal surface and the junction of the guides other than the central guides, called the second distance d 2 , is between 1 mm and 4 mm;
  • the light module comprises, for example, eight light guides;
  • the illumination units are light strips;
  • the secondary illumination unit is central; for example in the case of the previous paragraph, the secondary illumination unit forms a central light strip;
  • the light module is arranged so as to generate a light beam forming a portion of the road beam;
  • the projection system comprises a primary lens receiving the rays leaving the outputs of the light guides and projecting them towards infinity;
  • according to the previous paragraph, the part comprising the light guides and the primary lens are made in one single piece; thus, this makes it possible to reduce the number of distinct components of the light module and to simplify the assembly of said module.

L'invention a également pour objet un dispositif d'éclairage comprenant un premier module lumineux agencé de manière à générer une portion primaire de faisceau route. Ledit dispositif comprend en outre un module lumineux selon l'invention, dit deuxième module lumineux, agencé de manière à générer une portion secondaire de faisceau route complémentaire à la portion primaire générée par le premier module.The invention also relates to a lighting device comprising a first light module arranged so as to generate a primary portion of the road beam. Said device further comprises a light module according to the invention, called a second light module, arranged so as to generate a secondary portion of the road beam complementary to the primary portion generated by the first module.

Dans ce document, sauf indication contraire, les termes « amont » et « aval » se réfèrent au sens de propagation de la lumière dans l'objet auquel ils se réfèrent et également au sens d'émission de lumière en dehors dudit objet.In this document, unless otherwise indicated, the terms "upstream" and "downstream" refer to the direction of propagation of light in the object to which they refer and also to the direction of emission of light outside said object.

Par ailleurs, tout ce qui est dénommé « avant » se trouve du côté amont tandis que tout ce qui est dénommé « arrière » se trouve du côté aval.Furthermore, everything called “front” is on the upstream side while everything called “rear” is on the downstream side.

Les termes « horizontal », « vertical » ou « transversal », « inférieur », « supérieur », « haut », « bas », « côté » sont définis par rapport à l'orientation du module lumineux ou une pièce faisant partie du module lumineux selon l'invention dans laquelle elle est destinée à être montée dans le véhicule. En particulier, dans cette demande, le terme « vertical » désigne une orientation perpendiculaire à l'horizon tandis que le terme « horizontal » désigne une orientation parallèle à l'horizon.The terms “horizontal”, “vertical” or “transverse”, “lower”, “upper”, “top”, “bottom”, “side” are defined in relation to the orientation of the light module or a part forming part of the light module according to the invention in which it is intended to be mounted in the vehicle. In particular, in this application, the term “vertical” designates an orientation perpendicular to the horizon while the term “horizontal” designates an orientation parallel to the horizon.

Dans la suite de la description, la direction verticale est représentée par l'axe V illustré sur les figures 1 à 4. L'horizontale désigne toutes orientations qui appartiennent ou qui sont parallèles à un plan passant l'axe L et l'axe T illustré sur les figures 1 à 4.In the remainder of the description, the vertical direction is represented by the axis V illustrated on the figures 1 to 4 . The horizontal designates all orientations which belong to or which are parallel to a plane passing the L axis and the T axis illustrated on the figures 1 to 4 .

D'autres caractéristiques et avantages de l'invention apparaîtront à la lecture de la description détaillée des exemples non limitatifs qui suivent, pour la compréhension de laquelle on se reportera aux dessins annexés, parmi lesquels :

  • la figure 1 illustre une vue de dessus d'un exemple de réalisation d'un module lumineux selon l'invention ;
  • la figure 2 illustre une vue de côté du module lumineux selon la figure 1 ;
  • la figure 3 illustre une vue arrière d'une pièce comportant une pluralité de guides de lumière ; ladite pièce fait partie du module lumineux de la figure 1 ;
  • la figure 4 illustre une vue de dessus de la pièce de la figure 3 ;
  • la figure 5 illustre l'image générée par le module lumineux de la figure 1 ; ladite image est sous forme de courbes isolux, projetée sur un écran vertical, notamment à une distance de 25 mètres au-devant du module lumineux de la figure 1.
Other characteristics and advantages of the invention will appear on reading the detailed description of the non-limiting examples which follow, for an understanding of which reference will be made to the appended drawings, among which:
  • there figure 1 illustrates a top view of an exemplary embodiment of a light module according to the invention;
  • there figure 2 illustrates a side view of the light module according to the figure 1 ;
  • there Figure 3 illustrates a rear view of a part having a plurality of light guides; said part is part of the light module of the figure 1 ;
  • there Figure 4 illustrates a top view of the part of the Figure 3 ;
  • there Figure 5 illustrates the image generated by the light module of the figure 1 ; said image is in the form of isolux curves, projected on a vertical screen, in particular at a distance of 25 meters in front of the light module of the figure 1 .

En référence à la figure 1 et à la figure 2, un module lumineux 1 selon un exemple de réalisation de l'invention est destiné à générer un faisceau lumineux dans la direction d'un axe optique I. Le module lumineux 1 comprend une pièce 2 portant une pluralité de guides de lumière 10 et une lentille primaire 6. Cette dernière est placée à distance et en aval de la pièce 2 de manière à recevoir les rayons lumineux sortant de ladite pièce 2.In reference to the figure 1 and to the figure 2 , a light module 1 according to an exemplary embodiment of the invention is intended to generate a light beam in the direction of an optical axis I. The light module 1 comprises a part 2 carrying a plurality of light guides 10 and a lens primary 6. The latter is placed at a distance and downstream from part 2 so as to receive the light rays coming out of said part 2.

La pièce 2 portant tous les guides de lumière est ci-après appelée pièce de guides 2. Cette pièce de guides 2 comprend une première portion 21 à partir de laquelle les guides de lumière 10 s'étendent longitudinalement vers l'amont. La première portion 21 comprend une première face 210 disposée face à la lentille primaire 6 et légèrement courbée en direction de l'éloignement de ladite lentille primaire 6. En d'autres termes, la première portion 21 de la pièce 2 est concave.The part 2 carrying all the light guides is hereinafter called the guide part 2. This guide part 2 comprises a first portion 21 from which the light guides 10 extend longitudinally upstream. The first portion 21 comprises a first face 210 disposed facing the primary lens 6 and slightly curved in the direction away from said primary lens 6. In other words, the first portion 21 of the part 2 is concave.

Ici, les guides de lumière 10 forment une deuxième portion 22 de la pièce 2. Lesdits guides 10 sont alignés de façon à former une rangée horizontale 15 de guides. De plus, ces guides de lumière 10 sont disposés en éventail. En effet, les guides de lumière 10 s'étendent, ici, selon une direction légèrement inclinée par rapport à la direction longitudinale L parallèle à l'axe optique I.Here, the light guides 10 form a second portion 22 of the part 2. Said guides 10 are aligned so as to form a horizontal row 15 of guides. In addition, these light guides 10 are arranged in a fan shape. In fact, the light guides 10 extend, here, in a direction slightly inclined relative to the longitudinal direction L parallel to the optical axis I.

Précisément, dans l'exemple illustré, les guides de lumière 10 sont au nombre de huit et disposés de part et d'autre de l'axe optique I. La première moitié 11 des guides de lumière 10 est située à gauche de l'axe optique I par rapport au sens de l'émission de la lumière. Ladite première moitié 11 des guides de lumière sont inclinée vers la droite. La deuxième moitié 12 des guides est située à droite de l'axe optique I par rapport au sens de l'émission de la lumière. Ladite deuxième moitié 12 des guides de lumière sont inclinée vers la gauche. Autrement dit, la première moitié 11 et la deuxième moitié 12 des guides de lumière sont symétriques en miroir par rapport à l'axe optique I. Les axes respectifs des guides de lumière 10 se convergent à un point commun fictif.Precisely, in the example illustrated, the light guides 10 are eight in number and arranged on either side of the optical axis I. The first half 11 of the light guides 10 is located to the left of the axis optical I relative to the direction of light emission. Said first half 11 of the light guides are inclined to the right. The second half 12 of the guides is located to the right of the optical axis I relative to the direction of light emission. Said second half 12 of the light guides are inclined to the left. In other words, the first half 11 and the second half 12 of the light guides are mirror symmetrical with respect to the optical axis I. The respective axes of the light guides 10 converge at a fictitious common point.

Sauf indications contraires, les termes « gauche » et « droite » sont définis par rapport au sens de propagation de la lumière à l'intérieur du module lumineux 1 et en dehors dudit module 1. Ici, étant donné la disposition du module lumineux 1, les termes « gauche » et « droite » correspondent respectivement à la gauche et à la droite des figures 1, 3 et 4.Unless otherwise indicated, the terms “left” and “right” are defined in relation to the direction of propagation of light inside the light module 1 and outside said module 1. Here, given the arrangement of the light module 1, the terms “left” and “right” correspond respectively to the left and right of the figures 1 , 3 And 4 .

Par ailleurs, dans l'exemple illustré, chaque guide de lumière 10 présente une section variable dans le sens de la longueur. Ici, la section de chaque guide de lumière 10 est croissante d'amont en aval.Furthermore, in the example illustrated, each light guide 10 has a variable section lengthwise. Here, the section of each light guide 10 increases from upstream to downstream.

En outre, les guides de lumière 10 ne présentent pas la même épaisseur. Ici, on entend par épaisseur la dimension mesurée dans la direction latérale représentée par l'axe T sur les figures 1 à 4. En effet, l'épaisseur des guides de lumière 10 varie en fonction de l'emplacement de ces guides dans la rangée 15. Ici, plus le guide de lumière s'éloigne de l'axe optique I, plus il est épais. Cette caractéristique est observée clairement sur la figure 3. Les guides de lumière 31 et 38, situées respectivement à l'extrémité gauche 151 et l'extrémité droite 152 de la rangée 15, sont les guides les plus épais de la rangée 15.In addition, the light guides 10 do not have the same thickness. Here, by thickness we mean the dimension measured in the lateral direction represented by the axis T on the figures 1 to 4 . Indeed, the thickness of the light guides 10 varies depending on the location of these guides in row 15. Here, the further the light guide moves away from the optical axis I, the thicker it is. This characteristic is clearly observed on the Figure 3 . The light guides 31 and 38, located respectively at the left end 151 and the right end 152 of row 15, are the thickest guides of row 15.

Dans l'exemple illustré, les guides de lumière 10 adjacents se joignent l'une à l'autre par une jonction de matière. En fonction de l'emplacement de la jonction, les guides de lumière 10 sont classés en deux catégories de guides : les guides primaires 3 et les guides secondaires 4. La différence entre les guides primaires 3 et les guides secondaires 4 réside au fait que la jonction entre les guides secondaires 4 adjacents est située en amont de la jonction entre les guides primaires 3. Cette différence sera expliquée en détail plus loin dans la description.In the example illustrated, the adjacent light guides 10 are joined to each other by a material junction. Depending on the location of the junction, the light guides 10 are classified into two categories of guides: the primary guides 3 and the secondary guides 4. The difference between the primary guides 3 and the secondary guides 4 lies in the fact that the junction between the adjacent secondary guides 4 is located upstream of the junction between the primary guides 3. This difference will be explained in detail later in the description.

Selon l'invention et dans l'exemple illustré, le module lumineux 1 comprend deux guides secondaires 4 situées au milieu de la rangée horizontale 15 de guides. Ainsi, ces guides secondaires 4 sont ci-après appelés les guides centraux 4. Ces guides centraux 4 sont disposés de part et d'autre de l'axe optique I du module lumineux, dont un premier guide central 41 situé à gauche de l'axe optique I et un deuxième guide central 42 situé à droite du même axe I.According to the invention and in the example illustrated, the light module 1 comprises two secondary guides 4 located in the middle of the horizontal row 15 of guides. Thus, these secondary guides 4 are hereinafter called the central guides 4. These central guides 4 are arranged on either side of the optical axis I of the light module, including a first central guide 41 located to the left of the optical axis I and a second central guide 42 located to the right of the same axis I.

Tous les guides de lumière 10, quelle que soit leur catégorie, comprennent un dioptre d'entrée 30, 410 ou 420. Vus de côté, tous les guides de lumière 10 ont un profil incurvé de manière à ce que les dioptres d'entrée soient orientés vers le haut, comme illustré sur la figure 2.All light guides 10, regardless of their category, include an entrance diopter 30, 410 or 420. Seen from the side, all light guides 10 have a curved profile so that the entrance diopters are facing upwards, as shown in the figure 2 .

Des sources de lumière 9 peuvent être agencées en vis-à-vis des dioptres d'entrée de tout ou partie des guides de lumière 10.Light sources 9 can be arranged opposite the entrance diopters of all or part of the light guides 10.

La lentille primaire 6 est placée à distance et en aval de la pièce 2 de manière à recevoir les rayons sortant de la première face 210 de ladite pièce 2. La lentille primaire 6 comporte ici, à l'arrière, une face aval 62, et à l'avant, une face amont 61. Sur la figure 1 et la figure 2, la face amont 61 est moins courbée que la face aval 62.The primary lens 6 is placed at a distance and downstream of the part 2 so as to receive the rays emerging from the first face 210 of said part 2. The primary lens 6 comprises here, at the rear, a downstream face 62, and at the front, an upstream face 61. On the figure 1 and the figure 2 , the upstream face 61 is less curved than the downstream face 62.

La lentille primaire 6 est agencée de façon à former une surface focale F représentée par la ligne pointillée sur la figure 4. La lentille primaire 6 forme donc un système de projection des sorties de guides 10 de la pièce 2.The primary lens 6 is arranged so as to form a focal surface F represented by the dotted line on the Figure 4 . The primary lens 6 therefore forms a projection system for the guide outlets 10 of part 2.

Les figures 3 et 4 représentent respectivement une vue arrière et une vue de dessus de la deuxième portion 22 de la pièce 2 pour mieux montrer la différence de niveau entre la jonction des guides primaires 3 et la jonction des guides centraux 4.THE figures 3 And 4 respectively represent a rear view and a top view of the second portion 22 of part 2 to better show the difference in level between the junction of the primary guides 3 and the junction of the central guides 4.

Dans l'exemple illustré, le module lumineux 1 comprend six guides primaires 3, dont trois guides comptés à partir d'une extrémité gauche 151 de la rangée horizontale 15 et trois autres guides comptés à partir d'une extrémité droite 152 de la même rangée 15.In the example illustrated, the light module 1 comprises six primary guides 3, including three guides counted from a left end 151 of the horizontal row 15 and three other guides counted from a right end 152 of the same row 15.

Les guides primaires 3 comprennent chacun un dioptre d'entrée 30 et une sortie 39. Les sorties 39 des guides primaires 3 sont illustrées par des traits mixtes sur la figure 3.The primary guides 3 each include an input diopter 30 and an output 39. The outputs 39 of the primary guides 3 are illustrated by mixed lines on the Figure 3 .

Ici, pour les guides primaires situés aux extrémités de la rangée, par exemple pour le guide primaire d'extrémité droite 38, sa sortie, référencée 398, est une surface délimitée verticalement par une face supérieure 381 et par une face inférieure 382 dudit guide primaire 38. La sortie 398 est aussi délimitée latéralement par une arête verticale 313 d'une face latérale droite 34 du guide 38 et par une jonction 331 avec le guide primaire adjacent, situé à gauche dudit guide 38. Le guide primaire adjacent est référencé 37 sur la figure 3.Here, for the primary guides located at the ends of the row, for example for the right end primary guide 38, its exit, referenced 398, is a surface delimited vertically by an upper face 381 and by a lower face 382 of said primary guide 38. The outlet 398 is also delimited laterally by a vertical edge 313 of a right lateral face 34 of the guide 38 and by a junction 331 with the adjacent primary guide, located to the left of said guide 38. The adjacent primary guide is referenced 37 on there Figure 3 .

La sortie du guide primaire d'extrémité gauche 31 est définie de manière analogue.The exit from the left end primary guide 31 is defined in a similar manner.

Quant aux autres guides primaires 3, par exemple le guide primaire 37 voisin au guide d'extrémité droite 38, sa sortie, référencée 397, est une surface délimitée verticalement par une face supérieure 371 et par une face inférieure 372. Ladite sortie 397 est délimitée latéralement par une première jonction 331 avec le guide primaire d'extrémité droite 38 et par une deuxième jonction 332 avec le guide primaire situé à gauche du guide primaire 37. Le guide primaire situé à gauche du guide primaire 37 est référencé 36 sur la figure 3.As for the other primary guides 3, for example the primary guide 37 adjacent to the right end guide 38, its outlet, referenced 397, is a surface delimited vertically by an upper face 371 and by a lower face 372. Said outlet 397 is delimited laterally by a first junction 331 with the right end primary guide 38 and by a second junction 332 with the primary guide located to the left of the primary guide 37. The primary guide located to the left of the primary guide 37 is referenced 36 on the Figure 3 .

Etant donné de l'emplacement différent de la jonction 43 des deux guides centraux 4 par rapport aux jonctions 33, 331, 332 des guides primaires 3, les sorties des guides centraux 4 sont définies légèrement différentes de celle des guides primaires 3. Les jonctions 33, 331, 332 des guides primaires 3 sont ci-après appelées les jonctions primaires 33, 331, 332.Given the different location of the junction 43 of the two central guides 4 relative to the junctions 33, 331, 332 of the primary guides 3, the outputs of the central guides 4 are defined slightly different from that of the primary guides 3. The junctions 33 , 331, 332 of the primary guides 3 are hereinafter called the primary junctions 33, 331, 332.

En effet, les guides centraux 4, à savoir le premier guide central 41 et le deuxième guide central 42, se joignent l'un à l'autre à une jonction 43, dite jonction centrale 43. L'écartement angulaire entre le premier guide central 41 et le deuxième guide central 42 peut être une valeur comprise entre 5° et 15°. Ici, l'écartement angulaire est défini par l'angle α formé par la face latérale droite 415 du premier guide central 41 et la face latérale gauche 425 du deuxième guide central 42.Indeed, the central guides 4, namely the first central guide 41 and the second central guide 42, join one another at a junction 43, called the central junction 43. The angular spacing between the first central guide 41 and the second central guide 42 can be a value between 5° and 15°. Here, the angular spacing is defined by the angle α formed by the right side face 415 of the first central guide 41 and the left side face 425 of the second central guide 42.

Comme illustré sur les figures 3 et 4, la jonction centrale 43 est située en amont par rapport aux jonctions primaires 33, 331, 332. Par conséquent, les sorties des guides centraux 4 sont également situées en amont des sorties 33 des guides primaires 3.As illustrated on the figures 3 And 4 , the central junction 43 is located upstream with respect to the primary junctions 33, 331, 332. Consequently, the outlets of the central guides 4 are also located upstream of the outlets 33 of the primary guides 3.

Précisément, comme illustré sur la figure 3 et la figure 4, le premier guide central 41 comprend un dioptre d'entrée 410 et une sortie 419 marquée par de petits tirets sur ces figures 3 et 4. La sortie 419 du premier guide central 41 est ci-après appelée la première sortie 419.Precisely, as illustrated in the Figure 3 and the Figure 4 , the first central guide 41 comprises an entry diopter 410 and an exit 419 marked by small dashes on these figures 3 And 4 . The outlet 419 of the first central guide 41 is hereinafter called the first outlet 419.

La première sortie 419 est une surface délimitée verticalement par une face supérieure 411 et par une face inférieure 412 du premier guide central 41. La première sortie 419 est aussi délimitée latéralement par la jonction centrale 43 et, ici, par une ligne sensiblement verticale 414 appartenant à une face latérale gauche 413 du premier guide central 41. Cette ligne verticale 414 est située au niveau de la jonction centrale 43.The first outlet 419 is a surface delimited vertically by an upper face 411 and by a lower face 412 of the first central guide 41. The first outlet 419 is also delimited laterally by the central junction 43 and, here, by a substantially vertical line 414 belonging to a left side face 413 of the first central guide 41. This vertical line 414 is located at the central junction 43.

Quant au deuxième guide central 42, celui-ci comprend un dioptre d'entrée 420 et une sortie 429 marquée aussi par une ligne de petits tirets sur les figures 3 et 4. La sortie 429 du premier guide central 41 est ci-après appelée la deuxième sortie 429.As for the second central guide 42, this includes an entry diopter 420 and an exit 429 also marked by a line of small dashes on the figures 3 And 4 . The outlet 429 of the first central guide 41 is hereinafter called the second outlet 429.

De manière analogue au premier guide central 41, la deuxième sortie 429 est une surface délimitée verticalement par une face supérieure 421 et par une face inférieure 422 dudit deuxième guide central 42. La deuxième sortie 429 est aussi délimitée latéralement par la jonction centrale 43 et par une ligne sensiblement verticale 424 appartenant à une face latérale droite 423 du deuxième guide central 42. Cette ligne verticale 424 est située au niveau de la jonction centrale 43.Analogous to the first central guide 41, the second outlet 429 is a surface delimited vertically by an upper face 421 and by a lower face 422 of said second central guide 42. The second outlet 429 is also delimited laterally by the central junction 43 and by a substantially vertical line 424 belonging to a right side face 423 of the second central guide 42. This vertical line 424 is located at the central junction 43.

Les premier et deuxième guides centraux 41 et 42, ainsi agencés, forment un ensemble de deux guides centraux, dit ensemble particulier 5.The first and second central guides 41 and 42, thus arranged, form a set of two central guides, called a particular set 5.

Au-delà de la première sortie 419 et de la deuxième sortie 429, le premier guide central 41 et le deuxième guide central 42 s'unissent en un seul guide, formant une portion terminale 51 de l'ensemble particulier 5.Beyond the first outlet 419 and the second outlet 429, the first central guide 41 and the second central guide 42 unite into a single guide, forming a terminal portion 51 of the particular assembly 5.

L'extrémité aval de la portion terminale 51 forme la sortie 52 de l'ensemble particulier 5. Autrement dit, la portion terminale 51 est délimitée longitudinalement par les première et deuxième sorties 419, 429 d'une part et par la sortie 52 de l'ensemble particulier 5 d'autre part.The downstream end of the terminal portion 51 forms the outlet 52 of the particular assembly 5. In other words, the terminal portion 51 is delimited longitudinally by the first and second outlets 419, 429 on the one hand and by the outlet 52 of the 'particular set 5 on the other hand.

Ici, la sortie 52 de l'ensemble particulier 5 est délimitée latéralement par une troisième jonction 333 entre le deuxième guide central 42 et le guide primaire 36 situé à droite dudit deuxième guide 42, et par une quatrième jonction 334 entre le premier guide central 41 et le guide primaire situé à gauche dudit premier guide 41, référencé 32 sur les figures 3 et 4.Here, the outlet 52 of the particular assembly 5 is delimited laterally by a third junction 333 between the second central guide 42 and the primary guide 36 located to the right of said second guide 42, and by a fourth junction 334 between the first central guide 41 and the primary guide located to the left of said first guide 41, referenced 32 on the figures 3 And 4 .

En d'autres termes, la sortie 52 de l'ensemble particulier 5 est agencée au niveau de la jonction 334 entre le premier guide central 41 et le guide primaire 32 voisin à gauche et au niveau de la jonction 333 entre le deuxième guide central 42 et le guide primaire 36 voisin à droite.In other words, the outlet 52 of the particular assembly 5 is arranged at the level of the junction 334 between the first central guide 41 and the neighboring primary guide 32 on the left and at the level of the junction 333 between the second central guide 42 and the neighboring primary guide 36 on the right.

Ainsi, la sortie 52 de l'ensemble particulier 5 est distincte de la première sortie 419 et de la deuxième sortie 429, et est située en aval desdites sorties 419 et 429.Thus, the outlet 52 of the particular assembly 5 is distinct from the first outlet 419 and the second outlet 429, and is located downstream of said outlets 419 and 429.

Comme illustré sur la figure 4, la surface focale F de la lentille primaire 6 est agencée de manière à être au plus proche des sorties 39 de guides primaires 3 et de la sortie 52 de l'ensemble particulier 5. De cette manière, les rayons lumineux en sorties des guides primaires 3 et de l'ensemble particulier 5 sont imagés par la lentille primaire 6 tout en minimisant des aberrations optiques de champs.As illustrated on the Figure 4 , the focal surface F of the primary lens 6 is arranged so as to be as close as possible to the outlets 39 of primary guides 3 and to the outlet 52 of the particular assembly 5. In this way, the light rays coming out of the primary guides 3 and the particular assembly 5 are imaged by the primary lens 6 while minimizing optical field aberrations.

De plus, la surface focale F présente un degré de courbure sensiblement semblable à celui de la première face 210 de la pièce 2.In addition, the focal surface F has a degree of curvature substantially similar to that of the first face 210 of part 2.

La jonction centrale 43 est plus éloignée de la surface focale F que les jonctions primaires 33, 331, 332 le sont par rapport à ladite surface focale F. Autrement dit, la distance d1 entre la surface focale F et la jonction centrale 43 est supérieure à la distance d2 entre la surface focale F et les jonctions primaires, notamment la deuxième jonction primaire 332.The central junction 43 is further from the focal surface F than the primary junctions 33, 331, 332 are with respect to said focal surface F. In other words, the distance d 1 between the focal surface F and the central junction 43 is greater at the distance d 2 between the focal surface F and the primary junctions, in particular the second primary junction 332.

Deux sources de lumière 9 sont agencées en vis-à-vis des dioptres d'entrée des guides centraux 4. Ici, une première source de lumière 91 est placée en face du dioptre d'entrée 410 du premier guide central 41 tandis qu'une deuxième source de lumière 92 est placée en face du dioptre d'entrée 420 du deuxième guide central 42.Two light sources 9 are arranged opposite the entrance diopters of the central guides 4. Here, a first light source 91 is placed opposite the entrance diopter 410 of the first central guide 41 while a second light source 92 is placed opposite the entrance diopter 420 of the second central guide 42.

A titre d'exemple, la première source de lumière 91 est distante latéralement de la deuxième source de lumière 92 d'une valeur comprise entre 3 mm et 7 mm. Sur la figure 4, la distance latérale entre la première source de lumière 91 et la deuxième source de lumière 92 est représentée par la référence « d3 ».For example, the first light source 91 is spaced laterally from the second light source 92 by a value of between 3 mm and 7 mm. On the figure 4 , the lateral distance between the first light source 91 and the second light source 92 is represented by the reference “d 3 ”.

A titre d'exemple, les première et deuxième sources de lumière 91 et 92 peuvent être des diodes électroluminescentes mono-puce.For example, the first and second light sources 91 and 92 may be single-chip light-emitting diodes.

La première source de lumière 91 émet des rayons lumineux qui se propagent à l'intérieur du premier guide central 41 jusqu'à la première sortie 419. De même, la deuxième source de lumière 92 émet des rayons lumineux qui se propagent à l'intérieur du deuxième guide central 42 jusqu'à la deuxième sortie 429.The first light source 91 emits light rays which propagate inside the first central guide 41 as far as the first outlet 419. Likewise, the second light source 92 emits light rays which propagate inside from the second central guide 42 to the second outlet 429.

Au-delà de la première et deuxième sorties 419 et 429, les rayons lumineux arrivent dans la portion terminale 51 où lesdits rayons peuvent se mélanger. Dans la portion terminale 51, des parois délimitant cette portion réfléchissent les rayons lumineux de manière à former un faisceau lumineux collimaté et homogène à la sortie 52. Ainsi, ce faisceau collimaté et homogène atteint la surface focale F et est projeté par la lentille primaire 6, formant une image comprenant une unité d'illumination à forte intensité.Beyond the first and second outputs 419 and 429, the light rays arrive in the terminal portion 51 where said rays can mix. In the terminal portion 51, walls delimiting this portion reflect the light rays so as to form a collimated and homogeneous light beam at the outlet 52. Thus, this collimated and homogeneous beam reaches the focal surface F and is projected by the primary lens 6 , forming an image including a high intensity illumination unit.

La figure 5 illustre à titre d'exemple et de manière schématique une image I1 du faisceau lumineux généré à partir des deux sources de lumière 91 et 92 et du module lumineux 1. L'image I1 est obtenue, par exemple, sur un écran situé à 25 m du module lumineux 1.There figure 5 illustrates by way of example and schematically an image I1 of the light beam generated from the two light sources 91 and 92 and the light module 1. The image I1 is obtained, for example, on a screen located 25 m of the light module 1.

Ici, l'image I1 comprend une unité d'illumination 8 de forme rectangulaire et présente une intensité lumineuse élevée. A titre d'exemple, dans une configuration où les première et deuxième sources de lumière 91 et 92 sont des diodes électroluminescentes présentant chacune un flux lumineux de 250 lm, l'unité d'illumination 8 peut présenter un éclairement maximal de 110 lux..Here, the image I1 includes an illumination unit 8 of rectangular shape and has a high light intensity. For example, in a configuration where the first and second light sources 91 and 92 are light-emitting diodes each having a luminous flux of 250 lm, the illumination unit 8 can have a maximum illuminance of 110 lux.

Par ailleurs, l'unité d'illumination 8 obtenue présente une forme rectangulaire assez régulière. Ainsi, ladite unité d'illumination 8, lorsqu'elle est mise avec d'autres unités d'illumination (non représentées) correspondant aux guides primaires 3, contribue à former un faisceau lumineux pixélisé homogène. La qualité dudit faisceau est donc améliorée, ce qui permet de procurer un meilleur confort de visibilité au conducteur.Furthermore, the illumination unit 8 obtained has a fairly regular rectangular shape. Thus, said illumination unit 8, when placed with other illumination units (not shown) corresponding to the primary guides 3, contributes to forming a homogeneous pixelated light beam. The quality of said beam is therefore improved, which provides better visibility comfort for the driver.

Bien entendu, en plus des première et deuxième sources de lumière 91 et 92, d'autres sources de lumière peuvent être mises devant les guides primaires. Dans ce cas, l'image obtenue par le module lumineux 1 sera différente de l'image I1 illustrée. A titre d'exemple, l'image obtenue comprendra une bande lumineuse avec une unité d'illumination à intensité élevée au milieu.Of course, in addition to the first and second light sources 91 and 92, other light sources can be placed in front of the primary guides. In this case, the image obtained by the light module 1 will be different from the image I1 illustrated. As an example, the resulting image will include a light strip with a high intensity illumination unit in the middle.

Le module lumineux 1 peut être installé dans un dispositif d'éclairage du devant d'un véhicule automobile. Ce dispositif d'éclairage peut être conçu pour projeter un faisceau route. Dans cette configuration, le dispositif d'éclairage comprend un premier module lumineux agencé de manière à générer une portion primaire de faisceau route. Parallèlement, le module lumineux 1 décrit ci-dessus, dit deuxième module lumineux, est agencé de manière à générer une portion secondaire de faisceau route. Ladite portion secondaire est complémentaire à la portion primaire de faisceau route et peut être située au-dessus de la ligne de coupure d'un faisceau croisement.The light module 1 can be installed in a front lighting device of a motor vehicle. This lighting device can be designed to project a high beam. In this configuration, the lighting device comprises a first light module arranged so as to generate a primary portion of the road beam. At the same time, the light module 1 described above, called the second light module, is arranged so as to generate a secondary portion of the high beam. Said secondary portion is complementary to the primary portion of the high beam and can be located above the cut-off line of a low beam.

Claims (14)

  1. A motor vehicle light module (1) comprising:
    - a component (2) comprising a plurality of light guides (10, 3, 4), each of said guides (10, 3, 4) extending between an input diopter (30, 410, 420) of this guide and an output (39, 419, 429), adjacent light guides (10, 3, 4) being joined to each other by a material junction (33, 43);
    - a plurality of light sources (9, 91, 92) arranged facing the input diopters (410, 420) of some or all of the light guides (10, 3, 4);
    - a projection system (6) downstream of the guide outputs (39, 419, 429, 52), and having a focal surface (F) projecting an image of every light ray passing through said focal surface (F);
    - at least two guides (4, 41, 42) in which the distance (d1) between the focal surface (F) and the junction (43) of said two guides (4, 41, 42), is greater than the distance (d2) between the focal surface (F) and the junction (33, 331, 332, 333, 334) of the other guides (3, 31, 32, 36, 37, 38)
    the light module being capable of generating a pixelated light beam,
    characterized in that the at least two guides (4, 41, 42) in which the distance (d1) between the focal surface (F) and the junction (43) of said two guides (4, 41, 42) is greater than the distance (d2) between the focal surface (F) and the junction (33, 331, 332, 333, 334) of the other guides (3, 31, 32, 36, 37, 38) are called secondary guides (4, 41, 42), the other guides being called primary guides (3, 31, 32, 36, 37, 38), each primary guide forming in the beam a primary lighting unit in the beam and the secondary guides (4, 41, 42) jointly forming a single secondary lighting unit (8) in the beam, the lighting units being arranged adjacently in at least one array and being selectively activatable, and
    in that the secondary lighting unit (8) has an intensity greater than the intensity of each primary lighting unit.
  2. The light module (1) as claimed in claim 1, characterized in that the light guides (10, 3, 4) are arranged in a horizontal array (15), in that the two guides (4, 41,42), in which the distance (d1) between their junction (43) and the focal surface (F) is greater than the distance (d2) between the focal surface (F) and the junction (33, 331, 332, 333, 334) of the other guides (3, 31, 32, 36, 37, 38), are placed in the middle of said horizontal array (15), and are called central guides (4, 41,42).
  3. The light module (1) as claimed in claim 2, characterized in that the light module (1) is intended to generate a light beam along an optical axis (I), and in that the central guides (4, 41, 42) are equal in number on either side of said optical axis (I).
  4. The light module (1) as claimed in claim 2 or as claimed in claim 3, characterized in that the central guides (4, 41, 42) are two in number.
  5. The light module (1) as claimed in any one of claims 2 to 4, characterized in that a single-chip light-emitting diode (9, 91, 92) is placed in front of the input diopter (410, 420) of each central guide (4, 41, 42).
  6. The light module (1) as claimed in the preceding claim, characterized in that the single-chip light-emitting diodes (9, 91, 92) are arranged on a printed circuit according to a surface-mount technology.
  7. The light module (1) as claimed in one of claims 2 to 6, characterized in that the angular spacing between the two central guides (4, 41, 42) is an angle of between 5° and 15°.
  8. The light module (1) as claimed in one of claims 2 to 7, characterized in that the distance (d1) between the focal surface (F) and the junction (43) of the central guides (4, 41, 42), called the first distance (d1), is more than 0.5 mm.
  9. The light module (1) as claimed in claim 8, characterized in that the distance (d2) between the focal surface (F) and the junction (33, 331, 332, 333, 334) of the other guides (3, 31, 32 , 36, 37, 38), called the second distance (d2), is between 1 mm and 4 mm.
  10. The light module (1) as claimed in any one of the preceding claims, characterized in that it comprises eight light guides (10, 3, 4).
  11. The light module (1) as claimed in any one of the preceding claims, characterized in that the lighting units are light strips.
  12. The light module (1) as claimed in any one of the preceding claims, characterized in that the secondary lighting unit (8) is central.
  13. The light module (1) as claimed in any one of the preceding claims, characterized in that it is arranged so as to generate a light beam forming a portion of high beam.
  14. A lighting device, characterized in that it comprises a first light module arranged so as to generate a primary portion of high beam, and in that it comprises a light module (1) according to the preceding claim, called the second light module, arranged so as to generate a secondary portion of high beam complementary to the primary portion generated by the first module.
EP19753006.6A 2018-08-31 2019-08-06 Motor vehicle light module comprising a plurality of light guides Active EP3844436B1 (en)

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FR1857863A FR3085463B1 (en) 2018-08-31 2018-08-31 MOTOR VEHICLE LIGHT MODULE COMPRISING A PLURALITY OF LIGHT GUIDES
PCT/EP2019/071122 WO2020043443A1 (en) 2018-08-31 2019-08-06 Motor vehicle light module comprising a plurality of light guides

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US20210180760A1 (en) 2021-06-17
CN112771305A (en) 2021-05-07
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EP3844436A1 (en) 2021-07-07
FR3085463B1 (en) 2022-03-25
FR3085463A1 (en) 2020-03-06
WO2020043443A1 (en) 2020-03-05

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