WO2024251988A1 - Module d'éclairage automobile matriciel imageant des sources lumineuses - Google Patents
Module d'éclairage automobile matriciel imageant des sources lumineuses Download PDFInfo
- Publication number
- WO2024251988A1 WO2024251988A1 PCT/EP2024/065806 EP2024065806W WO2024251988A1 WO 2024251988 A1 WO2024251988 A1 WO 2024251988A1 EP 2024065806 W EP2024065806 W EP 2024065806W WO 2024251988 A1 WO2024251988 A1 WO 2024251988A1
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- WO
- WIPO (PCT)
- Prior art keywords
- light sources
- light
- lighting module
- groups
- optical parts
- 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.)
- Pending
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Classifications
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- 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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
- B60Q1/0029—Spatial arrangement
- B60Q1/0041—Spatial arrangement of several lamps in relation to each other
-
- 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
- F21S41/24—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
- F21S41/30—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
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- 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
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- 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
-
- 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
Definitions
- the invention relates to the technical field of lighting, in particular automotive lighting.
- the published patent document FR 2 858 042 A1 discloses an automotive lighting module producing a cut-off beam by means, essentially, of a light source illuminating perpendicular to the optical axis, an elliptical collector reflecting the rays of the light source towards a focus, a reflective surface with a cut-off edge for the rays reflected at the focus in question, and a projection lens, thus forming a cut-off lighting beam corresponding to an automotive lighting function called "low beam".
- the reflective surface with the cut-off edge is produced by an optical part made of transparent material.
- the latter has a spherical lower surface forming a diopter receiving light rays emitted by a second light source and reflected by a second elliptical collector, these rays forming a lighting beam added to the cut-off lighting beam, to provide an automotive lighting function called "high beam".
- the collector and the projection lens can be replaced by the optical part made of transparent material, the latter then no longer being able to have a spherical lower surface forming an entry diopter for light rays emitted by a second light source.
- This variant also requires applying a reflective treatment to certain surfaces of the optical part because the angles of incidence of the light are such that they do not allow total reflections to be achieved everywhere where this is necessary.
- the lighting module of this teaching has a certain bulk and is not suitable for being replicated in several assemblies arranged side by side.
- the invention aims to overcome at least one of the drawbacks of the aforementioned state of the art. More particularly, the invention aims to produce a matrix-type automotive lighting function, in a simple and economical manner and/or which can comply with different stylistic constraints of vehicles.
- the invention relates to a lighting module for a motor vehicle lighting device, comprising: - a plurality of optical parts made of transparent or translucent material, each comprising a light entry face and a light exit face and comprising an object focus facing said entry face; - a plurality of selectively activatable light sources arranged opposite the light entry faces; remarkable in that the plurality of light sources is arranged on a single plate and comprises groups of light sources arranged side by side transversely along directions comprising the object foci of the optical parts, respectively, said groups of light sources being offset transversely relative to each other relative to the corresponding optical part so that the plurality of optical parts forms light images of the light sources, composed of groups of light spots arranged side by side transversely and offset between said groups of light spots.
- the groups of light sources arranged side by side transversely in directions including object foci of the optical parts is meant that the light sources of each group of light sources are arranged along a straight line passing through the object focus of the optical part with which the group of light sources is associated.
- arranged in a direction or “arranged along a straight line” is meant that the center of the light sources, and more particularly of the emitting part of the light sources, of a group are arranged in a strip centered on this direction or this straight line, and of a height defined by the height of the emitting part of the light sources.
- the light sources are generally aligned according to the direction or the right but a slight offset of the light sources, transverse to this direction is not excluded, provided that the center of the light sources is not offset by more than one height of the emissive part of the light sources.
- the light sources, and more particularly the emitting part of the light sources, of a group can all be centered on this direction or this line, that is to say that all the centers of the light sources of a group are arranged on the line or the direction.
- the light sources of the groups of light sources are arranged along this direction or this straight line, on either side of the object focus of the optical part with which they are associated.
- certain light sources are arranged on a first side of the object focus, others on a second side of the object focus.
- a light source may be arranged on the object focus of the optical part with which it is associated.
- the directions in which the light sources of the light source groups are arranged are parallel.
- the light source groups are identical.
- each optical part makes it possible to directly image the light sources of the group of light sources with which it is associated. Thanks to the offset of the groups of light sources relative to each other, and to the direct imaging system of the optical parts, the offset of the light sources is immediately reflected in the light images formed by each optical part and projected onto the road. More precisely, each light image is formed by a plurality of light spots, each light spot coming from a light source. Thus, as the light sources are offset, the projected light spots are also offset. The light images and light spots therefore intertwine to form a segmented lighting function.
- each light source can be selectively activated, it is then possible to activate or deactivate the projection of each light spot corresponding to a light source. Thus, it is then possible to create dark areas in the segmented lighting function, and to obtain an adaptive lighting function, also called by the acronym ADB for Adaptive Driving Beam.
- the arrangement of the optical parts relative to each other is very free, the only constraint being to be able to arrange all the light sources on the same plate. This allows for great flexibility in the appearance of the lighting module.
- the light sources of each of the groups of light sources are spaced, from near to far, by a distance d , the transverse offset of each of the groups of light sources relative to another of said groups of light sources being d divided by a total number n of optical parts of the plurality of optical parts.
- one of the light sources of at least one of the groups of light sources is located on the object focus of the corresponding optical part.
- the optical parts of the plurality of optical parts are all identical.
- the lighting module according to the invention is then even more economical, because the shifting of the light spots, and therefore the interlacing of the light images for the creation of a segmented lighting function comes only from the shifting of the light sources, and the same optical part can be used opposite each of the groups of light sources. It is thus not necessary to develop a specific design for each of the optical parts to obtain the desired shifting of the light spots for the formation of the segmented lighting function.
- each of the groups of light sources comprises a number of said light sources of between 3 and 5.
- a very small number of light sources per group of light sources and therefore per optical part is sufficient, because each optical part contributes to obtaining the light intensity necessary to perform the desired lighting function.
- a group of light sources and its associated optical part do not need to achieve the intensity level required by the regulatory photometric grid of the lighting function performed. It is therefore possible to minimize the number of light sources associated with each optical part.
- the plurality of optical parts comprises a number of said optical parts between 5 and 9.
- the light sources of at least one of the groups of light sources have a vertical offset of at least one of said light sources relative to at least one other of said light sources which is less than or equal to a height h of the emitting part of said light sources.
- This arrangement of the light sources makes it possible in particular to form a cutout in the projected lighting beam.
- the light module is a dual-function light module configured to be able to perform both a dipped beam function and a segmented complementary main beam function. Indeed, with such an arrangement of the light sources, the lower edge of the segmented complementary main beam will be able to follow the horizontal cutoff with projection of the dipped beam.
- the light spots arranged side by side transversely and offset between said groups of light spots partially overlap transversely, so as to form a regulatory automobile lighting function of the segmented supplementary main beam type.
- each of the optical parts of the plurality of optical parts comprises an additional light entry face facing an additional light source and configured to project via the light exit face of said optical part a light beam with an upper horizontal cut-off.
- the lighting module is then a dual-function module capable of performing a first lighting function using the groups of light sources and the entry face of the optical parts, and a second lighting function using the additional light sources and the additional light entry face of the optical parts.
- the light beams with upper horizontal cut-off and the regulatory automotive lighting function of the segmented complementary road type form a segmented high beam type function.
- the additional light sources are arranged on the same additional plate.
- the additional plate on which the additional light sources are arranged is parallel to the plate on which the plurality of light sources are arranged.
- the measures of the invention are advantageous in that they make it possible to achieve an adaptive, transversely segmented automotive lighting function, i.e. consisting of a series of images or light spots arranged side by side transversely, advantageously with an overlap, and making it possible to create an unlit or at least darker area, movable by dynamic and selective activation and deactivation of the light sources.
- the optical parts are advantageously all identical, which reduces the development and production cost.
- each group of light sources can be formed by a strip-shaped component comprising the preformed light sources, i.e. with a predetermined arrangement.
- the offsetting of the groups of light sources transversely relative to each other and relative to the corresponding optical part can thus be more easily achieved by moving the component relative to the object focus of the corresponding optical part.
- an offset of the light spots making up the light images formed by each optical part is easily obtained for the achievement of the adaptive lighting function.
- the arrangement of the optical parts is advantageously free and can thus be adapted to various style requirements of the motor vehicle.
- FIG. 1 is a front and schematic view of a lighting module according to the invention.
- FIG. 1 is a perspective view of an optical part of a lighting module according to a first embodiment of the invention.
- FIG. 1 is a schematic front view of the plate and the light sources of the lighting module according to the first embodiment, as well as corresponding light images;
- FIG. 1 is a detailed view of part of the board and light sources of the lighting module of the , according to a variant.
- FIG. 1 is a perspective view of an optical part of a lighting module according to a second embodiment of the invention.
- FIG. 1 is a schematic front view of the plate and the light sources of the lighting module according to the second embodiment, as well as corresponding light images.
- the lighting module 2 (for the first embodiment) and 102 (for the second embodiment) has a generally planar extent, in this case mainly vertical with however an inclination of an angle ⁇ in a transverse and vertical plane and an inclination of an angle ⁇ in a longitudinal and vertical plane.
- the X direction corresponds to the longitudinal direction of the vehicle, the Y direction to the transverse direction and the Z direction to a vertical direction.
- the inclination according to the angle ⁇ is therefore in the YZ plane and the inclination according to the angle ⁇ is in the XZ plane.
- the inclinations ⁇ and ⁇ are optional in that each of them can have a zero value.
- the generally planar extent of the lighting module 2 or 102 is essentially dictated by constraints of integration of said lighting module in current designs of motor vehicle bodywork.
- the inclination along angle ⁇ can be between 0° and 30° and the inclination along angle ⁇ can be between 0° and 20°.
- Figures 2 to 5 illustrate a lighting module according to the first embodiment.
- the optical part 4 is made of transparent or translucent material and has a light entry face 4.1, a light exit face 4.2 and an object focus 4.4 located opposite the light entry face 4.1.
- the optical part 4 is optically configured to project via the light exit face 4.2 and along an optical axis 4.3 of the optical part, an image of a light source (not shown) arranged at the object focus 4.4, opposite the light entry face 4.1.
- a light source 6, supported by a plate 8, is arranged facing the light input face 4.1, precisely in this example at the object focus 4.4. It can be observed that the light rays emitted by the light source 6 propagate in the optical part 4 towards the output face 4.2.
- the optical part 4 is specifically configured to project a direct image of the light source 6, as illustrated to the right of the optical part 4 at .
- the light source 6, supported by the plate 8, can be inclined in a longitudinal and vertical plane by an angle ⁇ , with reference to the and his explanations above.
- the lighting module 2 comprises several optical parts 4 ( Figures 2 and 3), in this case three, and several light sources 6, in this case three, are arranged side by side transversely facing the light entry face of each of the optical parts 4. It is understood that it has been chosen to illustrate the lighting module 2 with three optical parts as an example, but that the lighting module 2 could comprise another number of optical parts, for example, a number between 5 and 9.
- each of the three groups 6.1, 6.2, 6.3 of light sources are all arranged side by side transversely in a direction which includes the object focus of the optical part with which the group 6.1, 6.2, 6.3 of light sources is associated. This direction is perpendicular to the optical axis 4.3 of the optical part 4.
- the first group 6.1 of light sources 6 comprises a light source 6 in a central position at the object focus 4.4 of the corresponding optical part 4 ( Figures 2 and 3), and two light sources 6 arranged transversely on either side of the light source in the central position 6.
- This arrangement has the effect that the optical part 4 ( Figures 2 and 3) projects a light image of the central light source 6, as illustrated by the central light spot located to the right of the first group 6.1 of light sources.
- the optical part 4 ( Figures 2 and 3) also projects light images from the two light sources arranged transversely on either side of the centrally positioned light source 6, illustrated by the two light spots on either side laterally of the central light spot, directly to the right of the first group 6.1 of light sources 6.
- the principle of propagation of the light rays emitted by the light sources arranged transversely on either side of the centrally positioned light source is similar to that described with reference to the . It is understood that these two light images may have a little less sharpness than the central light image, taking into account the fact that the imaged light sources are not exactly at the object focus but somewhat offset transversely.
- the light sources 6 of the first group 6.1 of light sources are advantageously distant from each other, from near to near, so that the corresponding projected light images are also distant from each other.
- the distance d between two adjacent light sources, taken from center to center, is advantageously constant.
- the second group 6.2 of light sources 6 is at a distance from the first group 6.1 of light sources 6, in the plane of the plate 8, in this case following a main direction, mainly vertical, of said plate 8, it being understood that the plate 8 can take other forms, as will be detailed later in relation to the . It can be observed that the second group 6.2 of light sources 6 is in itself identical to the first group 6.1 with the difference that the three light sources 6 arranged side by side transversely are offset transversely, in this case to the right, relative to the first group 6.1 and relative to the object focus 4.4 of the corresponding optical part 4, so that the light images thus projected are also offset, in this case to the right, as is visible in the light spots directly to the right of the second group 6.2 of light sources 6.
- the central light source 6 is no longer on the object focus 4.4 of the corresponding optical part 4 but to its right, that the left light source 6 is brought closer to the object focus 4.4 and that the right light source is further away from the object focus 4.4.
- the third group 6.3 of light sources 6 is at a distance from the second group 6.2 of light sources 6, in the plane of the plate 8, in this case following the main direction, mainly vertical, of said plate 8.
- the plate 8 can take other forms.
- the third group 6.3 of light sources 6 is in itself identical to the first and second groups 6.1 and 6.2, with the differences however that the three light sources 6 arranged side by side transversely are offset transversely, in this case to the right, relative to the second group 6.2 and relative to the object focus 4.4 of the corresponding optical part 4, so that the light images thus projected are also offset, in this case to the right, as is visible in the light spots directly to the right of the third group 6.3 of light sources 6. More particularly, it can be observed that the central light source 6 and the right light source are further away from the object focus 4.4 of the corresponding optical part and that the left light source 6 is closer to said object focus 4.4.
- each of the optical parts 4 namely the light sources 6 of the three groups 6.1, 6.2 and 6.3 of light sources 6, as illustrated by the three groups of light spots shown to the right of the lighting module 2, it is understood that the combination of these light images makes it possible to produce transversely discretized lighting, which makes it possible to produce in particular a segmented automotive regulatory lighting function, which may also be called a matrix automotive regulatory lighting function.
- This function may in particular be a segmented complementary road regulatory automotive lighting function.
- a dynamic dark zone in a transverse direction, may be obtained, this dark zone corresponding to one or more non-active light sources.
- the incremental transverse offset of the groups of light sources relative to the object focus is advantageously equal to the distance d between two adjacent light sources divided by the number n of optical parts, provided that the distance d in question between two adjacent light sources is identical for all the light sources.
- Such an approach allows the light images, when all combined, to produce a total projected light image which forms a homogeneous and continuous horizontal band in that it does not include a dark area. Indeed, if we consider the first group 6.1 of light sources distant from each other by the distance d , we observe two unlit areas between the three light spots represented directly to the right of said first group 6.1 of light sources 6.
- the incremental shift of d/n of the second and third groups 6.2 and 6.3 of light sources 6 relative to the object focus 4.4 has the effect of transversely shifting the projected light images so as to progressively cover and fill the two dark areas between the light spots of the first group 6.1 of light sources 6.
- the distance between adjacent light sources of all groups of light sources does not necessarily have to be constant.
- the incremental offset of each group of light sources also does not necessarily have to be constant. It is indeed conceivable to provide variable distances between light sources of the same group and/or incremental offsets, while ensuring the desired objective, namely a lighting beam forming a generally continuous transverse strip and transversely discretized by selective activation of the light sources.
- the first, second and third groups 6.1, 6.2, 6.3 of light sources 6 do not comprise the same number of light sources 6.
- the object foci 4.4 of the optical parts are aligned along the main direction of the lighting module 2.
- Such alignment is not obligatory, it is in fact possible to provide a less geometric distribution of the object foci while achieving the transverse offset of the groups of light sources relative to their respective object foci and thus ensuring a transverse offset of the light images of the light sources.
- the light sources 6 of one or more of the groups 3.1, 6.2 and 6.3 of light sources 6 do not necessarily have to be perfectly aligned transversely, i.e. horizontally.
- the light sources 6 of the same group may have a relative vertical offset, i.e. of one relative to at least one of the others.
- This offset is interesting in that it allows the light images produced to be moved vertically, which can be advantageous in a regulatory automotive lighting function of the segmented complementary road type, as mentioned above, in addition to a regulatory automotive lighting function with a higher horizontal cut-off with a step.
- the relative vertical offset of the light sources of a group thus allows the light images to conform to the step in question.
- the vertical offset is advantageously limited to the fact that each of the light sources 6 of the same group has its center contained in a transverse corridor of a height H corresponding to the height h of the luminous part of the light sources 6.
- the configuration of the lighting module 2’ shows an arrangement of the sub-modules following a horizontal direction for the middle row of three sub-modules and a predominantly vertical arrangement with the sub-module located above the middle row and the sub-module located below the row in question.
- the 2” lighting module configuration shows an arrangement of the sub-modules in a predominantly vertical direction and in a horizontal direction at the bottom of the lighting module.
- the 2’’’ lighting module configuration shows an arrangement of the sub-modules in a horizontal and a vertical direction.
- Figures 7-11 illustrate a lighting module according to the second embodiment.
- Reference numbers of the first embodiment are used to designate identical or corresponding elements, but these numbers are increased by 100. Reference is also made to the description of these elements in the context of the first embodiment. Specific reference numbers between 100 and 200 are used to designate elements specific to this embodiment.
- the optical part 104 is made of transparent or translucent material and has a light entry face 104.1, a light exit face 104.2 and an object focus 104.4 located opposite the light entry face 104.1.
- the optical part 104 is optically configured to project via the light exit face 104.2 and along an optical axis 104.3 of the optical part, an image of a light source (not shown) arranged at the object focus 104.4, opposite the light entry face 104.1.
- the optical part 104 comprises an additional light entry face 104.5 opposite which an additional light source (not shown) is intended to be arranged.
- the optical part 104 is configured to form with the light rays emitted by the additional light source arranged opposite the additional light entry face 104.5 a lighting beam with a higher horizontal cutoff.
- the additional light source 110 arranged opposite the additional light entry face 104.5 of the optical part 104 is shown there. It is supported by an additional plate 112 separate from the plate 108 supporting the light source 106, due to the further rearward position of the additional light entry face 104.5 relative to the light entry face 104.1.
- the additional light source 110 could be arranged on the plate 108 supporting the light source 106. It can be observed that the light rays emitted by the additional light source 110 (represented by continuous lines) propagate in the transparent or translucent material of the optical part 104 and undergo reflections there, in particular of the total reflection type, to be returned to the light entry face 104.1 provided with a cut-off edge 104.6 formed by an edge of the transparent or translucent material in question. The light rays are then returned to the light exit face 104.2.
- the lighting module 102 comprises several optical parts 104 ( Figures 7 and 8), in this case three, all identical, and several light sources 106, in this case three, are arranged side by side transversely facing the light entry face of each of the optical parts 104, similarly to the first embodiment. It is understood that it has been chosen to illustrate the lighting module 102 with three optical parts as an example, but that the lighting module 102 could comprise another number of optical parts, for example, a number between 5 and 9.
- the lighting module 102 further comprises an additional light source 110 arranged opposite the additional light entry face 104.5 ( ) of each of the optical parts 104.
- the additional light sources 110 are visible through openings 108.1 formed in the plate 108 supporting the light sources 106.
- the plate 112 supporting the additional light sources 110 is located at the rear of the plate 108.
- the plates 108 and 112 are thus offset relative to each other in a direction perpendicular to one of said plates; they are advantageously parallel.
- the openings 108.1 formed in the plate 108 intended to allow the passage of the rear part with the additional light entry face of the optical parts 104, are schematic and may take other forms; in particular, they may be notches, in the manner of a comb.
- the light sources 106 of the same group may have a relative vertical offset, that is to say of one with respect to at least one of the others.
- This offset is advantageously limited to the fact that each of the light sources 106 of the same group has its center contained in a transverse corridor of a height H corresponding to the height h of the luminous part of the light sources 106.
- the advantages are the same as those described in relation to the , namely to allow the light images produced to follow the not necessarily rectilinear cut-off of the lighting beam produced by the additional light sources 110.
- the H axis is the horizontal direction and the V axis is the vertical direction, the intersection of the H and V axes corresponding to the optical axis of the lighting module 102.
- the lower part of the light image is produced by the additional light sources 110, where the upper horizontal cut-off is clearly visible, essentially at the level of the H axis.
- a projection, at the level of the intersection of the V axis and as shown, can be provided, in particular by providing a projection corresponding to the cut-off edge of one of the optical parts. This is a regulatory automotive lighting function with an upper horizontal cut-off, commonly referred to as “low-beam”.
- the upper part of the light image is produced by the light sources 106 and corresponds to the combination of the light spots shown to the right of the .
- This upper part forms, with the lower part mentioned above, a regulatory automotive lighting function commonly referred to as "high-beam".
- This function is called segmented or matrix in that the light spots in the upper part can be controlled individually by supplying or not supplying each of the light sources 106. It will be noted that this upper part corresponds to the light beam projected by the lighting module 2 according to the first embodiment illustrated in particular in FIGS. 2 to 4.
- the lighting module 102 according to the second embodiment can take various configurations in terms of the number of optical parts and their arrangement, as illustrated in FIG. for the first embodiment.
- the lighting module may comprise a housing engaging with the optical parts and with the plate(s) supporting the light sources, so as to ensure precise positioning of the optical parts relative to the light sources and of the optical parts relative to each other.
- the optical parts may have protrusions, as can be seen in FIGS. 2 and 7, intended to engage in hollows or gaps in the aforementioned housing.
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- General Engineering & Computer Science (AREA)
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- Optics & Photonics (AREA)
- Mechanical Engineering (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
Abstract
Description
- une pluralité de pièces optiques en matériau transparent ou translucide, comprenant, chacune, une face d’entrée de lumière et une face de sortie de lumière et comprenant un foyer objet en vis-à-vis de ladite face d’entrée ;
- une pluralité de sources lumineuses activables sélectivement disposées en vis-à-vis des faces d’entrée de lumière ;
remarquable en ce que la pluralité de sources lumineuses est disposée sur une même platine et comprend des groupes de sources lumineuses disposées côte-à-côte transversalement suivant des directions comprenant les foyers objet des pièces optiques, respectivement, lesdits groupes de sources lumineuses étant décalés transversalement les uns par rapport aux autres par rapport à la pièce optique correspondante de manière à ce que la pluralité de pièces optiques forme des images lumineuses des sources lumineuses, composées de groupes de taches lumineuses disposées côte-à-côte transversalement et décalées entre lesdits groupes de taches lumineuses.
Claims (12)
- Module d’éclairage (2 ; 102) pour dispositif d’éclairage de véhicule automobile, comprenant :
- une pluralité de pièces optiques (4 ; 104) en matériau transparent ou translucide, comprenant, chacune, une face d’entrée de lumière (4.1 ; 104.1) et une face de sortie de lumière (4.2 ; 104.2) et comprenant un foyer objet (4.4 ; 104.4) en vis-à-vis de ladite face d’entrée de lumière (4.1 ; 104.1);
- une pluralité de sources lumineuses (6 ; 106) activables sélectivement disposées en vis-à-vis des faces d’entrée de lumière (4.1 ; 104.1) ;
caractérisé en ce que
la pluralité de sources lumineuses (6 ; 106) est disposée sur une même platine (8 ; 108) et comprend des groupes (6.1, 6.2, 6.3 ; 106.1, 106.2, 106.3) des sources lumineuses (6 ; 106) disposées côte-à-côte transversalement suivant des directions comprenant les foyers objet (4.4 ; 104.4) des pièces optiques (4 ; 104), respectivement, lesdits groupes (6.1, 6.2, 6.3 ; 106.1, 106.2, 106.3) de sources lumineuses (6 ; 106) étant décalés transversalement les uns par rapport aux autres par rapport à la pièce optique correspondante (4 ; 104) de manière à ce que la pluralité de pièces optiques (4 ; 104) forme des images lumineuses des sources lumineuses (6 ; 106), composées de groupes de taches lumineuses disposées côte-à-côte transversalement et décalées entre lesdits groupes de taches lumineuses. - Module d’éclairage (2 ; 102) selon la revendication 1, dans lequel les sources lumineuses (6 ; 106) de chacun des groupes (6.1, 6.2, 6.3 ; 106.1, 106.2, 106.3) de sources lumineuses (6 ; 106) sont espacées, de proche en proche, d’une distance d, le décalage transversal de chacun des groupes (6.1, 6.2, 6.3 ; 106.1, 106.2, 106.3) de sources lumineuses (6 ; 106) par rapport à un autres desdits groupes (6.1, 6.2, 6.3 ; 106.1, 106.2, 106.3) de sources lumineuses (6 ; 106) étant de d divisé par un nombre total n de pièces optiques (4 ; 104) de la pluralité de pièces optiques 84 ; 104).
- Module d’éclairage (2 ; 102) selon l’une des revendications 1 et 2, dans lequel une des sources lumineuses (6 ; 106) d’au moins un des groupes (6.1, 6.2, 6.3 ; 106.1, 106.2, 106.3) de sources lumineuses (6 ; 106) est située sur le foyer objet (4.4 ; 104.4) de la pièce optique correspondante (4 ; 104).
- Module d’éclairage (2 ; 102) selon l’une des revendications 1 à 3, dans lequel les pièces optiques (4 ; 104) de la pluralité de pièces optiques (4 ; 104) sont toutes identiques.
- Module d’éclairage (2 ; 102) selon l’une des revendications 1 à 4, dans lequel chacun des groupes (6.1, 6.2, 6.3 ; 106.1, 106.2, 106.3) de sources lumineuses (6 ; 106) comprend un nombre desdites sources lumineuses (6 ; 106) compris entre 3 et 5.
- Module d’éclairage (2 ; 102) selon l’une des revendications 1 à 5, dans lequel la pluralité de pièces optiques (4 ; 104) comprend un nombre desdites pièces optiques (4 ; 104) compris entre 5 et 9.
- Module d’éclairage (2 ; 102) selon l’une des revendications 1 à 6, dans lequel les sources lumineuses (6 ; 106) d’au moins un des groupes (6.1, 6.2, 6.3 ; 106.1, 106.2, 106.3) de sources lumineuses (6 ; 106) présentent un décalage vertical d’au moins une desdites sources lumineuses (6 ; 106) par rapport à au moins une autre desdites sources lumineuses (6 ; 106) qui est inférieur ou égal à une hauteur h de la partie émettrice desdites sources lumineuses (6 ; 106) .
- Module d’éclairage (2 ; 102) selon l’une des revendications 1 à 7, dans lequel les taches lumineuses disposées côte-à-côte transversalement et décalées entre lesdits groupes de taches lumineuses se recouvrent partiellement de proche en proche transversalement, de manière à former une fonction d’éclairage automobile réglementaire du type route complémentaire segmenté.
- Module d’éclairage (102) selon l’une des revendications 1 à 8, dans lequel chacune des pièces optiques (104) de la pluralité des pièces optiques (104) comprend une face d’entrée de lumière supplémentaire (104.5) en vis-à-vis d’une source lumineuse supplémentaire (110) et configurée pour projeter par la face de sortie de lumière (104.2) de ladite pièce optique (104) un faisceau lumineux avec coupure horizontale supérieure.
- Module d’éclairage (102) selon les revendications 8 et 9, dans lequel les faisceaux lumineux avec coupure horizontale supérieure et la fonction d’éclairage automobile réglementaire du type route complémentaire segmenté forment une fonction de type feu de route segmenté.
- Module d’éclairage (102) selon l’une des revendications 9 à 10, dans lequel les sources lumineuses supplémentaires (110) sont disposées sur une même platine additionnelle (112).
- Module d’éclairage (102) selon les revendications 8 et 11, dans lequel la platine additionnelle (112) sur laquelle sont disposées les sources lumineuses supplémentaires (110) est parallèle à la platine (108) sur laquelle est disposée la pluralité de sources lumineuses (106).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202480038264.8A CN121311712A (zh) | 2023-06-08 | 2024-06-07 | 矩阵汽车照明模块成像光源 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR2305775A FR3149668A1 (fr) | 2023-06-08 | 2023-06-08 | Unité lumineuse |
| FRFR2305775 | 2023-06-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2024251988A1 true WO2024251988A1 (fr) | 2024-12-12 |
Family
ID=87889909
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/065806 Pending WO2024251988A1 (fr) | 2023-06-08 | 2024-06-07 | Module d'éclairage automobile matriciel imageant des sources lumineuses |
| PCT/EP2024/065805 Pending WO2024251987A1 (fr) | 2023-06-08 | 2024-06-07 | Unite lumineuse pour vehicule automobile |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2024/065805 Pending WO2024251987A1 (fr) | 2023-06-08 | 2024-06-07 | Unite lumineuse pour vehicule automobile |
Country Status (3)
| Country | Link |
|---|---|
| CN (2) | CN121311712A (fr) |
| FR (1) | FR3149668A1 (fr) |
| WO (2) | WO2024251988A1 (fr) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2858042A1 (fr) | 2003-07-24 | 2005-01-28 | Valeo Vision | Module d'eclairage elliptique sans cache realisant un faisceau d'eclairage a coupure et projecteur comportant un tel module |
| DE102005041234A1 (de) * | 2005-08-31 | 2007-03-01 | Hella Kgaa Hueck & Co. | Scheinwerfer für Fahrzeuge |
| EP2280215A2 (fr) * | 2009-07-31 | 2011-02-02 | Zizala Lichtsysteme GmbH | Phare de véhicule automobile à LED pour la production d'une répartition de lumière dynamique |
| US20130169154A1 (en) * | 2012-01-03 | 2013-07-04 | Bradley William Kay | Solid State Steerable Light |
| FR3074562A1 (fr) * | 2017-12-04 | 2019-06-07 | Valeo Vision | Dispositif d'eclairage emettant un faisceau lumineux a segments |
| US20190299851A1 (en) * | 2018-03-30 | 2019-10-03 | Valeo Vision | Interior lighting system for a motor vehicle |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6761668B2 (ja) * | 2016-05-17 | 2020-09-30 | 株式会社小糸製作所 | 車両用灯具 |
| JP6764257B2 (ja) * | 2016-05-27 | 2020-09-30 | 株式会社小糸製作所 | 車両用灯具 |
| FR3072446B1 (fr) * | 2017-10-13 | 2021-06-25 | Valeo Vision | "module d'eclairage formant un motif lumineux divise en une portion superieure nette et une portion inferieure floue" |
| JP7042615B2 (ja) * | 2017-12-28 | 2022-03-28 | スタンレー電気株式会社 | 車両用前照灯 |
| JP2022028514A (ja) * | 2020-08-03 | 2022-02-16 | 市光工業株式会社 | 車両用前照灯 |
| FR3125858B1 (fr) * | 2021-07-30 | 2023-10-06 | Valeo Vision | Module lumineux à sources à partie émissive maximisée |
| JP7591486B2 (ja) * | 2021-10-28 | 2024-11-28 | 株式会社小糸製作所 | 車両用灯具 |
-
2023
- 2023-06-08 FR FR2305775A patent/FR3149668A1/fr not_active Ceased
-
2024
- 2024-06-07 WO PCT/EP2024/065806 patent/WO2024251988A1/fr active Pending
- 2024-06-07 WO PCT/EP2024/065805 patent/WO2024251987A1/fr active Pending
- 2024-06-07 CN CN202480038264.8A patent/CN121311712A/zh active Pending
- 2024-06-07 CN CN202480038266.7A patent/CN121336069A/zh active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2858042A1 (fr) | 2003-07-24 | 2005-01-28 | Valeo Vision | Module d'eclairage elliptique sans cache realisant un faisceau d'eclairage a coupure et projecteur comportant un tel module |
| DE102005041234A1 (de) * | 2005-08-31 | 2007-03-01 | Hella Kgaa Hueck & Co. | Scheinwerfer für Fahrzeuge |
| EP2280215A2 (fr) * | 2009-07-31 | 2011-02-02 | Zizala Lichtsysteme GmbH | Phare de véhicule automobile à LED pour la production d'une répartition de lumière dynamique |
| US20130169154A1 (en) * | 2012-01-03 | 2013-07-04 | Bradley William Kay | Solid State Steerable Light |
| FR3074562A1 (fr) * | 2017-12-04 | 2019-06-07 | Valeo Vision | Dispositif d'eclairage emettant un faisceau lumineux a segments |
| US20190299851A1 (en) * | 2018-03-30 | 2019-10-03 | Valeo Vision | Interior lighting system for a motor vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN121336069A (zh) | 2026-01-13 |
| FR3149668A1 (fr) | 2024-12-13 |
| WO2024251987A1 (fr) | 2024-12-12 |
| CN121311712A (zh) | 2026-01-09 |
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