WO2024094640A1

WO2024094640A1 - Light-emitting device configured to perform at least two luminous functions

Info

Publication number: WO2024094640A1
Application number: PCT/EP2023/080268
Authority: WO
Inventors: Marine Courcier; Pierre Albou
Original assignee: Valeo Vision
Priority date: 2022-10-30
Filing date: 2023-10-30
Publication date: 2024-05-10
Also published as: FR3141507A1

Abstract

The invention relates to a light-emitting device (1) comprising selectively addressable light sources (41, 42), a collimator (3) common to the plurality of light sources and a matrix-array microlens device (2) with a mask (23) interposed between an entrance matrix array of microlenses and an exit matrix array of microlenses, the collimator being configured to shape the light rays emitted by a light source into a beam of substantially parallel rays delivered to the matrix-array device (2), with an angle of inclination that differs depending on the light source activated, at least one channel (5) for passage of light being defined at one longitudinal end by a single entrance microlens (20), which is configured to focus the beams of parallel rays into a focal region on the mask, the focal region (Z1) differing depending on said angle of inclination, the mask comprising a plurality of apertures (261, 262) respectively placed in one of the focal regions (Z1).

Description

DESCRIPTION

Title of the invention ■ Light device configured to perform a plurality of light functions.

The present invention relates to the field of lighting devices, in particular suitable for equipping a motor vehicle. The present invention relates more particularly to such light devices capable of generating several light functions, and for example a lighting light function and a signaling light function.

Vehicles and in particular motor vehicles are commonly equipped with headlights making it possible to generate different light functions such as road lighting or vehicle signaling to other road users, including daytime running light functions or even functions direction change indicator lights.

In certain applications, light rays emitted by a light source are directed within a microlens matrix device also known by the English acronym MLA for “microlens array” to shape a beam allowing the realization of a light function .

The matrix device comprises an input microlens matrix, an output microlens matrix and a mask interposed between these matrices. The matrix device is configured to form light circulation channels between one of the input microlenses and one of the output microlenses, the mask comprising mask portions respectively arranged in one of the light circulation channels. Each mask portion is provided with at least one opening capable of allowing light rays to pass from the input microlens to the output microlens. The apertures in the mask are configured to give a shape to the rays transmitted by the input lens array and to allow the output lens array to project that shape onto the road. Furthermore, vehicles and more particularly motor vehicles have increasingly compact headlights within which the same light module is able to generate several light functions and in particular a lighting function and a signaling function.

In this context, it is sought to emit light beams specific to each of the light functions generated by the module through the same lighting surface. In other words, in a search for a visual identity for the lighting of a vehicle, it is desired that an observer outside the vehicle sees the same illuminated surface whether it is a lighting function or a lighting function. signaling which is provided by the projector.

The microlens matrix devices of the prior art are not adapted to such requirements, insofar as a single light source is placed in front of the input microlens matrix. However, the inventors wish to be able to implement such a microlens matrix device to the extent that these devices make it possible to give the functional illuminating surface great freedom of shape, and therefore freedom of style for the projector equipped with the matrix device, by means of a discretization by the surface unit of the input and output microlenses.

In this context, the present invention proposes a light device comprising at least light emitting means, a collimator and a microlens matrix device, the light emitting means being configured to emit light rays in the direction of the matrix device via the collimator, the matrix device comprising at least one input microlens matrix, an output microlens matrix, a mask, interposed between the two microlens matrices, and a main optical axis intersecting the two microlens matrices, the matrix device being configured to form light circulation channels respectively arranged along the main optical axis between at least one input microlens and one output microlens, the mask comprising mask portions respectively arranged in one of the circulation channels . According to the invention, the light emitting means comprise a plurality of selectively addressable light sources, the collimator being common to the plurality of light sources and configured to conform the light rays emitted by a light source into a beam of substantially parallel rays directed in the direction of the matrix device , with an angle of inclination of the beam of rays substantially parallel to the optical axis which is different depending on the activated light source. Furthermore, at least one light circulation channel is arranged along the main optical axis being delimited at a longitudinal end by a single input microlens, configured to focus the beams of substantially parallel rays into a focusing zone. on the mask portion arranged in the light circulation channel and whose position on the mask portion differs according to said angle of inclination of the beam of substantially parallel rays, the single input microlens thus being configured to direct the rays on different focusing zones as a function of said angle of inclination of the beam of substantially parallel rays, the mask portion arranged in said at least one light circulation channel comprising a plurality of openings respectively arranged on one of the focusing zones .

The light sources are said to be selectively addressable to the extent that they can be activated independently of each other, by an electronic control device. For example, when one of the light sources is activated, the other or other light sources can be deactivated so that only one light source is capable of emitting light rays. Alternatively, to homogenize the lit appearance of the surface depending on the activation of the lights, it can be considered to leave on a source associated with a specific function while another source is on. In other words, in certain cases, at least some of the light sources, in particular all the light sources, can be turned on simultaneously, which makes it possible to generate the respectively associated light functions simultaneously. When all sources are on at the same time time, it is possible that certain sources are turned on at varying levels of light intensity for example.

Advantageously, all the light sources are configured to illuminate substantially the same area of the input microlens matrix. In other words, the light spots generated by the light sources on the input microlens matrix have substantially identical contours, so that said light spots largely overlap. Possible differences may exist due to the gap between the positions of the different light sources. By “largely overlap” we understand that more than 75%, in particular more than 90% of the surface of each light spot is common with at least one light spot generated by another light source of the light device.

Advantageously, each light source is configured to illuminate the entire input microlens array.

The light sources may in particular be light-emitting diodes.

Each input and output microlens has a convex surface, facing outwards from the matrix device, and the thickness of material which extends from the convex surface to the mask, the mask forming the boundary between the matrix of input microlenses and the output microlens array. The channels are defined as a strip of the material of the matrix device formed by an input microlens and an output microlens arranged opposite the input microlens if we consider the main optical axis, and that it n There is no structural element within the matrix device, such as a partition for example, to generate a physical delimitation between two neighboring channels.

The dimensions of the constant section of a light circulation channel are defined in particular by the corresponding dimensions of the input microlens. The mask comprises a plurality of mask portions respectively equipped with a plurality of openings, such that each of the light circulation channels comprises a mask portion with openings.

If the light circulating in a circulation channel encounters one of the openings formed in the mask portion present across this circulation channel, the light can be propagated towards the output microlens matrix, which allows the realization of a function bright. If this light comes from a first light source, a first light function can be produced and if this light comes from a second light source, a second light function can be produced, or an additional portion of the first light function making it possible to generate by combining these two portions a specific luminous function. In both cases, the light participating in carrying out the luminous function comes out of a common lighting surface, formed by the matrix of output microlenses.

The light device comprises a main optical axis, the first and second light functions being emitted globally along this main axis. In other words, the light beams of the first and second light function each extend in a volume containing said main optical axis.

Both the input microlens array and the output microlens array may be perpendicular to the main optical axis. In this case the light circulation channels are respectively arranged along the main optical axis, that is to say parallel to this axis.

The input microlens matrix and the output microlens matrix can both be inclined relative to the main optical axis, that is to say that the median virtual surfaces on which said matrixes respectively rest. microlenses are inclined relative to a plane perpendicular to said axis. In a first configuration, each output microlens is offset laterally relative to the respectively associated input microlens to define a light circulation channel, relative to the main optical axis. In this configuration the light circulation channels are respectively inclined relative to the main optical axis. In another configuration, certain sets of input microlenses and output microlenses respectively associated to define a light circulation channel are respectively offset axially with respect to at least one of the adjacent assemblies, relative to the main optical axis. Thus there are steps present on the external faces of the input microlens matrix and the output microlens matrix, these steps generating an overall inclination of these matrices. In this configuration the light circulation channels are respectively arranged along the main optical axis, that is to say parallel to this axis. It should be noted that said median virtual surfaces can be planar or curved.

According to the invention, it is thus possible to project several distinct light beams onto the same lighting surface, namely the matrix of output microlenses, by passing through first openings of the mask the rays focused by the microlenses of input when a first light function is desired and by passing through other openings in the mask the rays focused by the input microlenses when another light function is desired. It should be understood that when we talk about passing the focused rays through an opening, certain rays may not follow the theoretical path of the light rays and for example be blocked by an opaque portion of the mask.

The matrix device according to the invention thus makes it possible to easily and precisely carry out different light functions with the same lighting surface, the mask being produced in lithography to produce different types of openings specific to the realization of this or that light function.

The collimator is configured to redirect the rays which pass through it so as to form at the output a beam of rays parallel to each other and thus to homogeneously direct these light rays towards the microlenses of the input microlens matrix. After their passage into the crosshairs, the Light rays emitted by one or other of the selectively addressable light sources are thus directed homogeneously onto each of the input microlenses. The collimator is configured to direct the rays into a beam of parallel rays which arrives at the input microlenses with an angle of incidence which is specific to the activated light source and therefore to the light function which one wishes to implement with the light device.

In other words, the collimator is configured to direct the light rays emitted by a first light source towards the matrix device in a first beam of parallel rays and to direct the light rays emitted by another light source towards the matrix device in a another beam of parallel rays, the other beam of parallel rays having an inclination with respect to the optical axis which is different from the corresponding inclination of the first beam of parallel rays.

The input microlens array and the output microlens array are composed of microlenses whose dimensions are on the order of a millimeter, between 0.3 mm and 5mm.

More particularly, according to an advantageous embodiment of the invention, the projection microlenses all have a size, in diameter, height and/or width, in front view, less than or equal to 10mm. This makes it possible to limit the thickness of the microlenses, and thus to limit the mass of the part. Furthermore, according to an advantageous embodiment of the invention, the projection microlenses all have a size, in diameter, height and/or width, in front view, greater than or equal to 0.3 mm. This makes it possible to manufacture the optical device by an injection process that is simple to implement. According to an advantageous embodiment of the invention, the projection lenses all have a size, in diameter, height and/or width, in front view, of between 0.5 and 5mm. This allows the projection lenses to be small enough to be indistinguishable at the usual viewing distance. According to an optional characteristic of the invention, the at least one light circulation channel is arranged along the main optical axis being delimited at one longitudinal end by a single input microlens and at the other longitudinal end by a plurality of output microlenses.

According to an optional characteristic of the invention, the output microlenses arranged at a longitudinal end of a light circulation channel are adjacent. Where appropriate, adjacent output microlenses may extend in planes of elongation offset and parallel to each other, with a step that is formed from one output microlens to the other.

According to an optional characteristic of the invention, at least one dimension of an input microlens participating in delimiting a light circulation channel is a multiple of a corresponding dimension of the output microlens participating in delimiting this light circulation channel . By way of example, when a light circulation channel extends between an input microlens and two output microlenses, a dimension of the input microlens, projected in the vertical and transverse elongation plane, is equal to the sum of the corresponding dimensions, projected in the same plane, of the two adjacent output microlenses.

According to an optional characteristic of the invention, the output microlenses of the same light circulation channel are configured to present object foci positioned differently on the mask portion present in this light circulation channel, an object focal point of an output microlens being specifically associated with an opening of the mask portion.

According to an optional characteristic of the invention, within a light circulation channel, the number of openings different from each other within a mask portion is equal to the number of output microlenses present at one end longitudinal of this light circulation channel.

According to an optional characteristic of the invention, the number of openings different from each other within a mask portion is equal to the number of different light sources. According to an optional characteristic of the invention, the openings present within the same mask portion, in a light circulation channel, are of different shapes and/or dimensions from each other.

According to an optional characteristic of the invention, the pattern formed in a mask portion by the openings of different shapes and/or dimensions is identical for each mask portion. In other words, the different openings are arranged alternately on the mask in at least one main direction of elongation.

According to an optional characteristic of the invention, the openings comprise two types of openings, with the first openings and the second openings which are arranged alternately on the mask in at least one main direction of elongation. The matrix device extends mainly in a plane depending on two main elongation directions, perpendicular to the main optical axis of the optical axis, and each matrix of microlenses, input or output, is formed of microlenses arranged in rows and columns according to these two main directions of elongation. An alternation of openings of different types can be done in one of the directions of elongation or in both directions.

According to an optional characteristic of the invention, the light device comprises a first light source whose activation contributes to generating a first light function and a second light source whose activation contributes to generating a second light function or an additional portion of the first light function, light rays emitted by the first light source being intended to be focused by the input microlens of a light circulation channel on a first focusing zone located on a first opening of the mask portion arranged in this light circulation channel, light rays emitted by the second light source being intended to be focused by this same input microlens on a second focusing zone located on a second opening of the same mask portion. It should be noted that by participating in generating, we understand that the light device according to the invention can be the only device allowing the production of the desired lighting or signaling beam or that the light beam generated by this light device can be combined with other light beams generated by other light devices to form said beam, whether or not these other light devices conform to the invention.

More particularly, the collimator and the input microlenses are configured such that the light rays passing through the same input microlens are intended to pass through the same portion of mask within the light circulation channel downstream of this microlens. entry, essentially through a first opening when the rays are emitted by a first light source and essentially through a second opening when the light rays are emitted by a second light source.

According to an optional characteristic of the invention, each mask portion comprises first openings, respectively second openings, associated with a first focusing zone, respectively a second focusing zone, and characterized in that at least one of the first openings , respectively at least one of the second openings, has a shape and/or a dimension different from the other first openings, respectively from the other second openings.

In this way, we understand that the invention also covers cases where the windows formed by the openings can differ from one mask portion to another for the realization of the same function, for example to have more precise control. inside the globally generated light beam. For example, windows of different widths allow good precision on the evolution of the photometric values on a horizontal section of the beam.

According to an optional characteristic of the invention, the first light source and the second light source are at a distance from each other, being distributed on either side of a defined plane, the first light source being closer to said defined plane than the second light source. The first source can, if necessary, be arranged partly on this defined plane. The defined plane considered is a plane substantially perpendicular to one and/or the other of the microlens matrices and it comprises the main optical axis of the light device. This defined plane may in particular be a median plane, where appropriate the plane of symmetry, of the collimator. By distance from each other, it should be understood that the light sources are not in contact with each other and sufficiently spaced apart, for example with a space between them of the order of 0.5 twice the size of the light source, so that the rays can have a different inclination at the exit of the collimator depending on whether they are emitted by one or other of the light sources.

According to an optional characteristic of the invention, the object focus of one of the output microlenses specifically associated with a first opening is arranged substantially on a border delimiting said first opening. This is particularly implemented for the traffic channels intended to be crossed by the light rays participating in forming a lighting function, and in particular a dipped headlight function for which it is desired to have a clear cut-off of the beam, the cutting of the beam then being carried out by said border delimiting the opening on which the evoked object focus is placed.

According to an optional characteristic of the invention, the edge of said first opening on which the object focus of one of the output microlenses is placed has a projection.

According to an optional characteristic of the invention, the object focus of an output microlens specifically associated with a second opening is arranged substantially in the center of said second opening. By substantially in the center, it should be understood that this object focus is arranged far from an edge delimiting the second opening, which includes for example a position in which the object focus is arranged two thirds of a distance between two opposite edges delimiting this second opening. This is notably implemented for traffic channels intended to be crossed by light rays participating in forming a signaling function.

According to an optional characteristic of the invention, the mask is formed by a glass slide comprising at least one opaque layer deposited on one face of the glass slide, the openings being formed by cutouts in this opaque layer. More particularly, the opaque layer is deposited on the face of the glass slide which faces the input microlens matrix.

According to an optional characteristic of the invention, the number of different types of opening is equal to the number of different light sources. Furthermore, the number of output microlenses associated with the same input microlens and an associated light circulation channel is equal to the number of different light sources. For example: if two light functions are provided, with two light sources facing a common collimator, two types of openings are made in the mask, with an opening of each of these types of openings which is present in the same mask portion, that is to say in the same light circulation channel arranged between an input microlens and two output microlenses. When a first light source is activated, the light rays are focused by each input microlens within their associated circulation channel onto first zones of the mask portion present in this channel, the first zone corresponding to a first opening , or opening of the first type, formed in the mask portion. When the second light source is activated, the light rays are focused by each input microlens within their associated circulation channel, on second zones of the mask portion present in this channel, the second zone corresponding to a second opening , or opening of the second type. Within each mask portion, the second zones are offset relative to the first zones according to the direction of offset of the light sources relative to each other. It is notable that each of the zones onto which the light rays are likely to be directed after passing through an input microlens is located in an opening, or at the edge of an opening such that the light rays can propagate towards one of the output microlenses. There are thus no or few light rays blocked within the matrix device and no loss of light intensity, in particular for the implementation of a signaling function. With regard to the implementation of a low beam type lighting function, for which it is desired to give a shape to the beam which is different from that of the light task, part of the light rays is cut. In the latter case it should be understood that few light rays, other than those intended to be cut by the cut-off shape defined by the edges delimiting the specific opening in the mask, are blocked here.

According to an optional characteristic of the invention, the output microlenses associated with a light circulation channel equipped with a mask portion with an opening of the first type have an optical axis whose relative position within the light circulation channel is distinct from the corresponding relative position of the optical axis of the output microlenses associated with a light circulation channel equipped with a mask portion with an opening of the second type.

Thus, providing an off-center output microlens so that its center is aligned with the opening or at the edge of the opening helps to appropriately deflect the light rays.

According to an optional characteristic of the invention, the input microlenses and the output microlenses respectively have an external surface, in particular curved, facing the outside of the matrix device, and the matrix device is configured to present an output surface, formed by the plurality of external surfaces of the output microlenses, which is inclined with respect to a longitudinal direction along which the main optical axis of the light device extends.

For this purpose, the entire matrix device, and the light circulation channels as well, can be inclined relative to this main optical axis, with the external surfaces of the output microlenses extending in a plane substantially parallel to the plane in which the external surfaces of the input microlenses extend. The microlenses, and in particular the output microlenses, are then configured to direct the light rays towards the main optical axis of the light device.

Alternatively, the input microlens matrix and the output microlens matrix remain in a vertical and transverse plane, perpendicular to a longitudinal direction L along which the main optical axis o of the light device i extends, with light circulation channels which remain in this orientation parallel to the optical axis, and the external surfaces of input microlenses are offset axially from each other, so as to form transverse rows offset axially from each other and therefore steps of stairs which create the tilting effect when looking at the screen as a whole.

The invention also relates to a motor vehicle comprising at least one lighting device conforming to what has just been described above.

Other characteristics, details and advantages of the invention will emerge more clearly on reading the description which follows on the one hand, and examples of embodiment given for informational and non-limiting purposes with reference to the appended schematic drawings on the other hand. share, on which:

[Fig.i] represents a light device according to the present invention, making light sources visible, a collimator common to these light sources and a matrix device, comprising in particular a matrix of input microlenses, a mask and a matrix of microlenses Release ;

[Fig.2] represents in perspective the components of the matrix device of Figure i, with the mask arranged between the microlens matrices;

[Fig.3] represents a detailed view of a portion of the mask of the matrix device of Figure 1, making visible two openings of distinct shapes and/or dimensions within this mask portion; [Fig-4] represents a general view of the operation of the light device according to the invention ensuring a first light function, with the schematic representation of light rays propagating in the light device when a first light source is made active;

[Fig.5] represents a local view of the matrix device, centered on a light circulation channel between an input microlens and two adjacent output microlenses, when the light device provides the first light function as illustrated in the figure 4;

[Fig.6] represents a general view of the operation of the light device according to the invention ensuring a second light function, with the schematic representation of light rays propagating in the light device when a second light source is made active;

[Fig.7] represents a local view of the matrix device, centered on the light circulation channel illustrated in Figure 5, when the light device provides the second light function as illustrated in Figure 6.

It should first be noted that if the figures present the invention in detail for its implementation, these figures can of course be used to better define the invention, if necessary. It should also be noted that these figures only show examples of embodiments of the invention.

The characteristics, variants and different embodiments of the invention can be associated with each other, in various combinations, to the extent that they are not incompatible or exclusive of each other. It will be possible in particular to imagine variants of the invention comprising only a selection of characteristics described subsequently in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention from to the state of the art.

In the figures, elements common to several figures retain the same reference. In the description which follows, we will refer to an orientation function of the Longitudinal, Vertical and Transverse axes as they are defined by the trihedron L, V, T represented in Figures i to 7, with the longitudinal axis L which corresponds to the general direction of propagation of the light rays and the vertical and transverse axes V, T which participate in defining a main elongation plane of the matrix device of microlenses forming part of the light device, perpendicular to the longitudinal axis L. More particularly , the vertical axis V and the transverse axis T correspond respectively to the height and the width of windows produced in a mask as will be described in more detail below, these windows having a larger width dimension than that of height. The choice of the names of these axes does not limit the orientation that the lighting device can take, particularly when it is installed in a motor vehicle.

Figure 1 schematically illustrates a light device 1 comprising a matrix device 2 of microlenses, a collimator 3 and light emission means 4.

The light emitting means 4 comprise a plurality of light sources which, in the embodiment shown, are two in number including a first light source 41 and a second light source 42. As will be mentioned later, the number of light sources can vary as long as the matrix device is configured accordingly. Each of the light sources is selectively addressable. Here, each of the first and second light sources 41, 42 is thus able to turn on and off independently of one another, for example by means of an electronic control device.

The light sources 41, 42 are arranged on either side of a defined plane comprising a main optical axis 10 of the light device. In the example illustrated, the first light source 41 and the second light source 42 are distributed on either side of this defined plane, the distance of each of the light sources relative to the defined plane being able to vary depending on the light function Y1 that these light sources help to achieve. As will be described below, the distance of the light sources relative to the defined plane is to be determined as a function of the angle relative to the main optical axis 10 that we wish to give to the light rays exiting the collimator when either light source is activated. Thus, the light sources are distanced from each other, in the vertical direction as illustrated in Figure i in particular, but also in the transverse direction depending on the number and arrangement of the light sources. By being distant from each other, we understand that the light sources are not in contact with each other.

The collimator 3 and the light emitting means 4 are positioned relative to each other so that the light rays emitted by each of the light sources 41, 42 pass through the collimator 3. This collimator 3 is configured to capture light rays emitted by each of the light sources, here the first light source 41 or the second light source 42, and to orient them substantially parallel to each other and to direct them towards the matrix device 2, and more specifically towards a input microlens array 21.

The collimator 3 is more particularly configured to form beams of rays parallel or substantially parallel to each other, these beams being specific to the activation of each of the light sources. By “substantially parallel” we understand that the rays can present an angular shift linked to the size of the light source which generates them. In other words, the collimator 3, which has the shape of a lens, is configured to generate at output, in the direction of the matrix device 2, a first beam of parallel rays visible in Figure 4 when a first light source 41 is made active, the rays mainly presenting an angle of inclination relative to the optical axis of a first value, as will be explained below with reference to Figure 4. And this collimator 3 is configured to generate at the output a beam of parallel rays, but completely different, that is to say with a different inclination, if we change the activated light source. The collimator is then able to generate output, towards the matrix device 2, another beam of parallel rays when another light source is made active, the rays all or almost all having an angle of inclination relative to the optical axis of another value, different from the first value, such that this will be explained below with reference to Figure 6.

The microlens matrix device 2 comprises said input microlens matrix 21, an output microlens matrix 22 and a mask 23 interposed between the input microlens matrix 21 and the output microlens matrix 22. In the example illustrated, each matrix of microlenses 21, 22 and the mask 23 extend mainly along a vertical and transverse plane, perpendicular to a longitudinal direction L along which the main optical axis 10 of the light device 1 extends. alternatively, the matrix device can take a position inclined relative to the main optical axis, in particular to adapt to a curve of the vehicle in which it must be integrated. This inclined position can be taken by tilting the matrix device as a whole or by forming steps at the output surface of the matrix device formed by an external surface of the output microlens array.

The output surface of the matrix device, that is to say the external surface of the matrix of output microlenses 22, forms a lighting surface of the light device 1, that is to say a surface through which the light rays to generate a light beam outside the vehicle, which is common to each of the light functions capable of being performed by the light device.

Each microlens matrix, input or output, has an external surface, facing away from the mask, and an internal volume, formed by the thickness of material which extends from the external surface to the mask, the mask forming the boundary between the input microlens array and the output microlens array.

The input microlens matrix 21 is formed of a plurality of input microlenses 20 juxtaposed next to each other, as well as the vertical direction, as visible in Figure i, than in the transverse direction, as visible in Figure 2. These input microlenses each have a convex surface whose juxtaposition, where appropriate with a longitudinal offset which generates a step from one curved surface to the other, forms the external surface of the input microlens matrix, and they each have a thickness of material extending between the curved surface and the mask to be able to propagate the light of towards each other.

It is notable in the figures schematically representing the matrix device that only the external surface of the input and output microlenses is represented, but it should be noted that each microlens is not just formed by the convex surface but indeed includes the thickness of material which goes from this curved surface to the mask, or to the mask support when there is one.

Each input microlens 20 is configured within the matrix device 2 such that it presents an image focus on the mask 23. The light rays coming from the collimator 3 and passing through an input microlens 20 converge towards a focal point present on the mask 23. In the example illustrated, the input microlenses 20 are identical to each other.

In projection in a plane perpendicular to the main optical axis 10, the input microlenses 20 all have a size, in diameter, height and/or width, in front view, less than or equal to 10mm and greater than or equal to 0 .3mm. More particularly, input microlenses may be provided which all have a size, in diameter, height and/or width, in front view, of between 0.5 and 5mm.

In accordance with the arrangement of the input microlens array 20, the output microlens array 22 is formed of a plurality of output microlenses 24 juxtaposed next to each other, both in the vertical direction, such that visible in Figure 1, only in the transverse direction as visible in Figure 2. These output microlenses each have a convex surface whose juxtaposition, where appropriate with a longitudinal offset which generates a step from one convex surface to the other, forms the external surface of the matrix of output microlenses, i.e. that is to say the exit surface of the matrix device, and they each have a thickness of material extending between the mask and the curved surface to be able to propagate light from one to the other.

Each output microlens 24 is configured within the matrix device 2 such that it presents an object focus on the mask 23. The light rays propagating within the matrix device and passing through this object focus are reoriented by the microlens of corresponding output 24 into a light beam to be projected towards the outside of the vehicle to participate in forming a lighting beam on the road scene or a signaling beam.

In projection in a plane perpendicular to the main optical axis 10, the output microlenses 24 have, in a vertical direction, a height and, along a transverse dimension, a width of between 0.3 and 10 mm. It is notable that the height value of an input microlens is a multiple of the height value of an output microlens and the width of an input microlens is similar to that of an output microlens . In the example illustrated, the height value of an input microlens is more particularly double the height value of an output microlens. Without departing from the context of the invention, in particular if the arrangement of the light sources is on either side of a plane defined in a transverse direction, the value of the width of an input microlens could be a multiple of the value of the width of an output microlens. It follows from the above that each input microlens 20 has at least one dimension in a direction which is greater than the corresponding dimension of the output microlenses 24. In the example illustrated, for example and without this being limiting to the The invention is that the height of an input microlens along the vertical axis V is greater than the height of an output microlens along the same axis, the widths being equivalent.

The matrix device 2 according to the invention is configured to include within it light circulation channels 5, extending respectively, in a direction parallel to that of the main optical axis 10, between an input microlens 20 and several adjacent output microlenses 24. The number of adjacent output microlenses 24 participating in delimiting the same light circulation channel depends on the number of different light sources likely to be activated facing the same collimator. In the example illustrated, where two light sources are provided, each light circulation channel 5 extends between an input microlens 20 and two adjacent output microlenses 24, among which we can distinguish a first input microlens 241 and a second output microlens 242. It is understood that the dimension of the input microlens greater than that of the output microlenses has the effect of covering the entire light circulation channel with a single input microlens 20 while that -this leads to two output microlenses 241, 242.

The rays of light shaped by the collimator which are caused to pass through an input microlens 20 propagate essentially in the light circulation channel 5 associated with this input microlens 20 and they emerge from the matrix device 2 essentially by one of the output microlenses 24 associated with this light circulation channel, once they have been able to pass through the mask 23 placed across the light circulation channel 5.

As will be described in more detail below, the output microlenses 24 may have a different configuration depending on the light circulation channel 5 in which they are arranged. In particular, certain microlenses of output 24 can present, relative to the light circulation channel which is specific to them and to the light function which they must participate in generating, a symmetrical or asymmetrical configuration, or more particularly centered or decentered, with an optical axis of the microlens of output which is confused or offset with respect to a median axis of the associated light circulation channel.

Each light circulation channel 5 comprises a portion of the mask 23 extending across the matrix device between the input microlens matrix 21 and the output microlens matrix 22, the mask 23 being made up of a plurality of portions of mask 231 juxtaposed to each other and respectively arranged in a light circulation channel 5 which is specific to them.

Each mask portion 231 associated with a light circulation channel comprises a plurality of openings 26, visible in Figures 2 and 3 in particular, through which the rays deflected by the input microlens 20 associated with this light circulation channel are able to pass to continue their propagation through the matrix device 2 towards one of the output microlenses, the light rays passing through one of the openings being directed towards one of the output microlenses while the light rays passing through another of the apertures are directed towards another of the output microlenses.

Each mask portion 231 thus comprises respectively an opaque part 233, which blocks the propagation of light rays when they encounter this opaque part, and a transparent part 234, formed by the openings 26 and allowing the propagation of light rays brought to encounter this transparent part.

For a given light circulation channel, each output microlens 24 is configured to present an object focus positioned in one of the openings 26 forming the transparent part 234 of the mask portion 231. More particularly, for a light circulation channel light in which the output microlenses are arranged side by side in a first direction, here the vertical direction, the openings 26 formed in the same portion of mask 231 are spaced apart from each other in this same first direction. Each output microlens 24 is then configured to present an object focus positioned in the opening formed facing this output microlens. As will be described below, the object focus of the output microlenses 24 can be positioned in a central position of the opening 26 or in an off-center position, and in particular on an edge delimiting the opening 26.

In the previously mentioned context of input microlenses 20 focused on the mask, we understand that if the light rays focused by the input microlens 20 of a light circulation channel 5 are directed onto a first opening 261 participating in forming the transparent part 234 of the mask portion 231 disposed across this light circulation channel, the light is directed towards a first output microlens 24 disposed opposite this first opening, while if the light rays focused by the microlens input 20 of this light circulation channel 5 are directed onto a second opening 262 participating in forming the transparent part 234 of the same portion of mask 231, the light is directed towards a second output microlens 24 placed opposite this second opening. This will be more particularly described below with reference to Figures 4 to 7.

The matrix device is made of a transparent material, with here the mask 23 which is formed by a glass slide surrounded by a plastic material, the glass slide comprising at least one opaque layer deposited on one face of the glass slide, the opaque layer being cut, for example by a laser cutting operation, to produce each of the openings 26 within each of the mask portions. The cut parts thus form the transparent part 234 of the mask portions 231 and the remainder forms the opaque part 233.

The position of the mask 23 within the matrix device 2, as illustrated in Figure 1 and shown in Figures 4 and 6, is given here for information purposes. The mask 23 could, without departing from the context of the invention, be moved along the main optical axis 10 to get closer to the matrix of input microlenses 21 or the matrix of output microlenses 22, since the microlenses are configured to present a focus on the mask as previously mentioned.

Furthermore, the position of the mask takes into account the thickness, that is to say the dimension along the longitudinal axis L, of the input microlens matrix and that of the output microlens matrix, l The thickness of the input microlenses can be at least twice that of the output microlenses to the extent that for each channel there are two output microlenses for one input microlens.

As mentioned, and as visible in Figures 2 and 3, a mask portion 231 comprises a plurality of openings 26, arranged at a distance from each other so that an opaque part 233 is interposed between them . The openings formed within the same mask portion are offset from each other in the same direction as are the output microlenses delimiting the light circulation channel in which said mask portion is placed. Furthermore, the openings can be distinguished from each other by their shape and/or their dimensions.

In the example illustrated, a mask portion 231 comprises two openings arranged vertically at a distance from each other, with a first opening 261 and a second opening 262. The mask portion 231 has a vertical dimension Dv which is equal half the vertical dimension of the light circulation channel, and therefore substantially equal to half the vertical dimension of the input microlens 20 delimiting a longitudinal end of this light circulation channel. Furthermore, the vertical dimension Dv is substantially equal to the vertical dimension of an output microlens 24 delimiting a longitudinal end of this light circulation channel. The mask portion 231 extends vertically between an upper vertical edge 28 and a lower vertical edge 30.

In the following, arbitrarily, the first opening 261 is arranged closer to the lower vertical edge 30 than to the upper vertical edge 28, the second opening 262 being for its part arranged closer to the upper vertical edge 28.

The first opening 261 is delimited between a first border extending at a first distance Di from the upper vertical edge 28 of this mask portion and a second border extending at a second distance D2 from this upper vertical edge 28, and the second opening 262 is delimited between a first border extending at a third distance D3 from the upper vertical edge 28 of this mask portion and a second border extending at a fourth distance D4 from this upper vertical edge 28. So that the openings are offset vertically from each other, the value of the first distance Di is greater than the value of the fourth distance D4.

The mask 23 is formed by a juxtaposition of mask portions 231, with a lower vertical edge 30 of a mask portion which coincides with an upper vertical edge 28 of a neighboring mask portion as regards the juxtaposition according to the vertical direction and with lateral edges which merge with regard to the transverse juxtaposition not shown here.

Other arrangements could be implemented without departing from the context of the invention, with for example a staggered distribution of the input microlenses, and a corresponding distribution of the mask portions, so that a mask portion and its plurality of openings is arranged in the light circulation channel defined downstream of an input microlens.

Furthermore, one of the first or second openings could have a vertical dimension equal to Dv, that is to say substantially equal to half the vertical dimension of the input microlens 20 delimiting a longitudinal end of this channel. circulation of light, or substantially equal to the vertical dimension of an output microlens 24 delimiting a longitudinal end of this light circulation channel. Said opening could also have a horizontal dimension substantially equal to the horizontal dimension of the input microlens 20 delimiting a longitudinal end of this light circulation channel, or substantially equal to the dimension horizontal of an output microlens 24 delimiting a longitudinal end of this light circulation channel. Thus, said opening would then be delimited horizontally and/or vertically by the opaque parts 233 of the mask portions 231 of the adjacent light circulation channels and/or the opaque parts 233 of the mask portions 231 linked to the other openings of the same circulation channel from light.

As mentioned, it is notable that the number of openings 261, 262 formed in the same mask portion is equal to the number of different light sources 41, 42 associated with the same collimator 3, and equal to the number of functions light capable of being emitted through the same output surface, namely the matrix of output microlenses 22 or the same optical surface of a projector at the output of the matrix device 2.

In the example illustrated, two types of openings 26 are present and two light functions are provided by the light device 1 of the invention with the first light source 41 which participates, when activated, in generating a first function light and with the second light source 42 which participates, when activated, in generating a second light function.

In the example illustrated, the first light function is a lighting function and more particularly here non-blinding lighting for other road users, known under the name "low beam". The second light function can be a position light function, for which the power of the light source is reduced, or a signaling function and more particularly here signaling the presence of the vehicle, known under the name "daytime running lights".

The choice of light functions to be provided by the light device results in characteristics concerning the light sources 41, 42 and concerning the openings 26 formed in the mask portions 231.

The light source associated with the realization of this or that type of light function is thus chosen according to the light intensity that this ZI light function must be ensured or not to comply with automobile regulations. Furthermore, as mentioned previously, the position of a light source relative to a defined plane comprising the main optical axis may depend on the light function to be performed and in particular on the sharpness of the contours of the light beam to be ensured. .

In particular, in the exemplary embodiment where the first light function is a “low beam” type lighting function and where the second light function is a signaling function, the first light source 41 allowing the realization of the first function light can be closer to the defined plane than the second light source 42 allowing the realization of the second light function.

The openings 26 have a different positioning on their common mask portion and they can have shapes and dimensions distinct from each other. In particular, in the exemplary embodiment where the first light function is a “low beam” type lighting function, and as is particularly visible in Figure 2, the first openings 261 are delimited by a cut-off edge. 32 presenting a projection. This cutting edge 32 aims to define in the light beam projected at the output of the matrix device a particular shape making it possible to avoid dazzling road users who come across the vehicle equipped with the light device. This cutoff edge 32 is the second border extending at a second distance D2 from the upper vertical edge 28 of the corresponding mask portion 231.

It should be noted that the openings 26 could be inverted, at the same time as the arrangement of the light sources on either side of the defined plane, so that the second border of the first opening, that is to say the cutting edge 32 presenting the projection, this time extends to the distance D4 and is therefore closer to the optical axis and that the image projected from this cutting edge is sharper.

In the example illustrated, the second openings 262 are delimited by straight edges. The light device i according to the invention is particular in that the light emitting means 4 comprise a plurality of light sources 41, 42 which can be selectively addressed, in that the collimator common to these light sources reorients the light rays emitted into a beam of parallel rays which impacts each input microlens 20 with an angle of incidence specific to the activation of this or that light source and in that the openings 26 provided in the mask portion 231 arranged downstream of a microlens d The input 20 are arranged to be selectively on the path of the rays transmitted by the input microlens depending on the activation of this or that light source at the origin.

More particularly, several selectively addressable light sources 41, 42 are configured to illuminate the same matrix of input microlenses 21 via a common collimator 3. Each light source is arranged at a theoretical position relative to the collimator and to a defined plane, and the rays emitted by each light source are shaped into a beam of parallel rays specific to the activation of this or that light source, so that the rays emitted by a first light source arrive on an input microlens with a first angle d incidence and that the rays emitted by a second light source arrive on this same input microlens with a second angle of incidence.

It results from this arrangement that when a first light source 41 is active, the light rays arrive on the input microlenses with a first angle of incidence and the input microlenses 20 focus the light rays on a first zone Zi of the portion of mask 231 which corresponds to them. In other words, an input microlens 20 associated with a light circulation channel 5 focuses the light rays emitted by the first light source 41 on a first zone Zi of the mask portion 231 arranged in this circulation channel. light, and another input microlens associated with another light circulation channel focuses the light rays emitted by the first light source on a first zone of the mask portion arranged in this other light circulation channel. There first zone Zi is located on the mask portion with a first spacing Ei (visible in Figure 5) relative to the upper vertical edge 28 of this mask portion. The openings are configured so that one of the openings, here the first opening 261, is arranged in this first zone Zi. More particularly here, the first opening 261 is formed in the mask portion so that the cutting edge 32 of this first opening is placed on this first zone Zi.

It is understood that in the case where the first openings are arranged in a staggered manner as mentioned with reference to Figure 2, with columns of mask portions which include openings in an inverted arrangement, the corresponding input microlenses are configured to focus the light emitted by the first light source in a first alternative zone, corresponding to the position of a first opening.

In this context, when the first light source 41 is activated, the light rays successively pass through the collimator and each of the input microlenses to propagate in each of the light circulation channels and to pass through the mask at each of the first openings 261.

When the second light source 42 is activated in place of the first light source 41, due to the different position of these two light sources relative to the collimator 3 and the different angle of incidence with which the rays shaped by the collimator arrive on the input microlenses 20 of the matrix device 2, the input microlenses 20 focus the light rays on a second zone Z2 of the mask portion which corresponds to them. In other words, an input microlens 20 associated with a light circulation channel 5 focuses the light rays emitted by the second light source 42 on a second zone Z2 of the mask portion 231 arranged in this circulation channel. light 5, and another input microlens associated with another light circulation channel focuses the light rays emitted by the second light source on a second zone of the mask portion arranged in this other light circulation channel. There second zone Z2 is located on the mask portion with a second spacing E2 (visible in Figure 7) relative to the upper vertical edge 28 of this mask portion. The openings are configured so that one of the openings, here the second opening 262, is arranged in this second zone Zi. More particularly here, the second opening 262 is formed in the mask portion so that the second zone Z2 is arranged in the center of this second opening.

Here again, we understand that in the case where the second openings are arranged in a staggered manner as mentioned with reference to Figure 2, with columns of mask portions which include openings in an inverted arrangement, the microlenses of corresponding inputs are configured to focus the light emitted by the second light source in a second alternative zone, corresponding to the position of a second opening.

In this context, when the second light source 42 is activated, the light rays successively pass through the collimator and each of the input microlenses to propagate in each of the light circulation channels and to pass through the mask at each of the second openings 262.

According to the invention, it is thus possible to project two distinct light beams onto the same lighting surface, by passing through the first openings 261 of the mask 23 the rays focused by the input microlenses 20 when a first light function is desired and by passing through the second openings 262 of the mask 23 the rays focused by the input microlenses 20 when a second light function is desired.

We will illustrate what has just been mentioned by describing more precisely the propagation of light rays emitted by the first light source, with reference to Figures 4 and 5 then in a second step the propagation of light rays emitted by the second light source, with reference to Figures 6 and 7. Figures 4 and 5 illustrate the lighting device when it provides a first lighting function, here “low beam” type lighting.

The first light source 41 is made active by appropriate control of an electronic control device associated with the light device. The first light source 41 emits rays in the direction of the collimator 3, and the latter collects these rays and directs them into a beam of rays parallel to each other in the direction of the input microlens matrix of the matrix device 2.

The collimator 3 is configured such that, when the light rays come from the first light source 41, these light rays emerge from the collimator 3 with a main inclination of a first angle ai relative to the main optical axis 10, in taking into account, as previously specified, a slight divergence of the rays due to the fact that the source is not point-like. This results in a first angle of incidence of the light rays arriving on each of the input microlenses. In this context, the light rays are deflected by each input microlens 20 to be focused on a first zone Zi of the portion of the mask 231 placed across the light circulation channel 5 and visible in FIG. 5. This first zone Zi corresponds to the presence of a first opening 261, so that the rays focused on this first zone Zi are able to pass through the mask 23 towards the output microlens matrix. The output microlens placed opposite the first opening 261 has an object focus located on this first zone Zi, so that the rays which propagate through the first opening in the direction of this output microlens 24, here the first microlens of output 241, exit the matrix device substantially parallel to the optical axis of the output microlens, parallel to the main optical axis 10 of the light device.

As can be seen in Figure 5 in particular, the first zone Zi is located on the mask portion with a first spacing El relative to the upper vertical edge 28 of this mask portion. The first zone Zi corresponds to the presence of a first opening 261 to the extent that, considering the first distance Di and the second distance D2 associated with this first opening 261 and previously mentioned, the value of the first spacing El is between the value of the first distance Di and the value of the second distance D2 which define the dimension of the first openings. More particularly here, the value of the first spacing El is substantially equal to the value of the second distance, so that the first zone Zi, on which the light rays are focused when the first light source 41 is active, is located substantially on the second edge of the first opening which forms the cutting edge 32 previously mentioned.

It follows from the above that the light rays emitted by the first light source 41 propagate within the matrix device 2 in each of the light circulation channels 5 to pass through the first openings 261 provided in each mask portion 231. The output microlenses arranged downstream of these first openings 261 are configured to deflect the light rays towards the road on which the vehicle is traveling to form a non-dazzling beam of lighting.

Figures 6 and 7 illustrate the lighting device when it provides a second lighting function, here a vehicle signaling function of the “daytime running lights” type.

The second light source 42 is made active by appropriate control of an electronic control device associated with the light device. The second light source 42 emits rays in the direction of the collimator 3, and the latter collects these rays and directs them into a beam of rays parallel to each other in the direction of the input microlens matrix of the matrix device 2.

The collimator 3 is configured such that, when the light rays come from the second light source 42, these light rays emerge from the collimator 3 with a main inclination of a second angle ot2 relative to the main optical axis 10, there again taking into account as has been specified a slight divergence of the rays due to the fact that the source is not punctual. This results in a second angle of incidence of the light rays arriving on each of the input microlenses. In this context, the light rays are deflected by each input microlens 20 to be focused on a second zone Z2 of the portion of the mask 231 placed across the light circulation channel 5 and visible in FIG. 7. This second zone Z2 corresponds to the presence of a second opening 262, so that the rays focused on this second zone Z2 are able to pass through the mask 23 towards the output microlens matrix. The output microlens placed opposite the second opening 262 has an object focus located on this second zone Zi, so that the rays which propagate through the second opening in the direction of this output microlens 24, here the second microlens of output 241, exit the matrix device substantially parallel to the optical axis of the output microlens, parallel to the main optical axis 10 of the light device.

As is visible in Figure 7 in particular, the second zone Z2 is located on the mask portion with a second spacing E2 relative to the upper vertical edge 28 of this mask portion. The second zone Z2 corresponds to the presence of a second opening 262 insofar as, considering the third distance D3 and the fourth distance D4 associated with this second opening 262 and previously mentioned, the value of the second spacing E2 is between the value of the third distance D3 and the value of the fourth distance D4 which define the dimension of the second openings. More particularly here, the value of the second spacing E2 is substantially a value equidistant from the values of the third and fourth distances, so that the second zone Z2, on which the light rays are focused when the second light source is active, is located substantially at the center of the second opening 262, or two thirds as mentioned previously, that is to say at a distance from the edge so that the majority of the rays which must pass through the opening are not blocked at the margin .

It follows from the above that the light rays emitted by the second light source 42 propagate within the matrix device 2 in each of the light circulation channels 5 to pass through the second openings 262 provided in each mask portion 231. The output microlenses arranged downstream of these second openings 262 are configured to deflect the light rays into a signaling beam substantially parallel to the direction of the main optical axis 10.

It can be seen, in particular by comparing Figures 4 and 6, that the output surface of the light device, here formed by the matrix of output microlenses but which could be an optical surface of a projector placed downstream of the matrix device, is illuminated on a substantially identical extent whether the first light function, via the activation of the first light source 41, or the second light function, via the activation of the second light source 42, is implemented.

The invention as it has just been described makes it possible to meet the goal that it had set itself, namely to allow the realization by the same light module of at least two different light functions, by offering the same surface of lighting, namely a surface through which the light rays exit which has the same extent whatever the light function implemented.

We understand that the configuration of the matrix device proposed as an example could be different, since it makes it possible to have the same illuminated surface whatever the light function implemented. As a non-limiting example, as mentioned, we could provide a different alternation of the openings according to the columns to arrange the openings of the same type in a staggered pattern, and we could provide a light device which performs two different signaling functions, with for example daytime running lights and direction indicator lights, or two different lighting functions, with for example low beam and a high intensity light function to help create a “high beam” .

Claims

CLAIMS i. Light device (i) comprising at least light emission means (4), a collimator (3) and a microlens matrix device (2), the light emission means (4) being configured to emit light rays in direction of the matrix device (2) via the collimator (3), the matrix device (2) comprising at least one input microlens matrix (21), an output microlens matrix (22), a mask (23), interposed between the two microlens matrices, the matrix device (2) being configured to form light circulation channels (5) respectively arranged between at least one input microlens (20) and one output microlens (24), the mask (23) comprising mask portions (231) respectively arranged in one of the light circulation channels (5), the light device being characterized in that the light emitting means (4) comprise a plurality of sources selectively addressable light sources (41, 42), the collimator (3) being common to the plurality of light sources (41, 42) and configured to conform the light rays emitted by a light source into a beam of substantially parallel rays directed in the direction of the matrix device (2), with an angle of inclination of the beam of rays substantially parallel to the optical axis which is different depending on the activated light source, the device being further characterized in that at least one circulation channel light (5) is arranged along the main optical axis (10) being delimited at one longitudinal end by a single input microlens (20), configured to focus the beams of substantially parallel rays into a focusing zone on the mask portion (231) disposed in the light circulation channel and whose position on the mask portion (231) differs according to said angle of inclination of the beam of substantially parallel rays, the single input microlens being thus configured to direct the rays onto different focusing zones (Zi, Z2) as a function of said angle of inclination of the beam of substantially parallel rays, the mask portion (231) arranged in said at least one circulation channel of light comprising a plurality of openings (261, 262) respectively arranged on one of the focusing zones (Zi, Z2).

2. Light device (1) according to the preceding claim, characterized in that the at least one light circulation channel is arranged along the main optical axis (10) being delimited at a longitudinal end by a single microlens input (20) and at the other longitudinal end by a plurality of output microlenses (24).

3. Light device (1) according to the preceding claim, characterized in that the output microlenses (24) arranged at a longitudinal end of a light circulation channel are adjacent.

4. Light device according to any one of claims 2 or 3, characterized in that the output microlenses (24) of the same light circulation channel (5) are configured to present object foci positioned differently on the portion mask (231) present in this light circulation channel (5), a focal point of an output microlens being specifically associated with an opening (26) of the mask portion (231).

5. Light device (1) according to one of claims 2 to 4, characterized in that, within a light circulation channel (5), the number of openings (261, 262) different from each other others within a mask portion (231) is equal to the number of output microlenses (234) present at a longitudinal end of this light circulation channel (5).

6. Light device according to one of the preceding claims, characterized in that the number of openings (261, 262) different from each other within a mask portion (231) is equal to the number of light sources ( 41, 42) different.

7. Light device (1) according to one of the preceding claims, characterized in that the openings (261, 262) present within the same mask portion (231), in a light circulation channel (5) , are of different shapes and/or dimensions from each other.

8. Light device (i) according to the preceding claim, characterized in that the pattern formed in a mask portion by the openings (261, 262) of different shapes and/or dimensions is identical for each mask portion (231) .

9. Light device (1) according to any one of the preceding claims, characterized in that it comprises a first light source (41) whose activation contributes to generating a first light function and a second light source (42) whose the activation contributes to generating a second light function or an additional portion of the first light function, light rays emitted by the first light source (41) being intended to be focused by the input microlens (20) of a channel circulation of light on a first focusing zone located on a first opening (261) of the mask portion (231) disposed in this light circulation channel, light rays emitted by the second light source (42) being intended to be focused by this same input microlens (20) on a second focusing zone located on a second opening (262) of the same mask portion (231).

10. Light device according to one of claims 1 to 7, or 9 when it does not depend on claim 8, characterized in that each mask portion (231) comprises first openings (261), respectively second openings (262), associated with a first focusing zone, respectively a second focusing zone, and characterized in that at least one of the first openings (261), respectively at least one of the second openings (262), has a shape and /or a different dimension from the other first openings (261), respectively from the other second openings (262).

11. Light device according to claim 9 or 10, characterized in that the first light source (41) and the second light source (42) are at a distance from each other, being distributed on either side of a defined plan, the first light source (41) being closer to said defined plane than the second light source (42).

12. Light device according to one of the preceding claims, in combination with claim 2, characterized in that the object focus of one of the output microlenses (24) specifically associated with a first opening (261) is arranged substantially on a border (32) delimiting said first opening.

13. Lighting device according to the preceding claim, characterized in that the edge (32) of said first opening (261), on which the object focus of one of the output microlenses (24) is arranged, has a projection.

14. Light device according to any one of claims 9 to 11, characterized in that the object focus of an output microlens (24) specifically associated with a second opening (262) is arranged substantially in the center of said second opening ( 262).

15. Motor vehicle comprising at least one light device (1) according to any one of the preceding claims.