Lighting module and mobility of a lighting unit within the lighting module

Abstract

The present invention relates to a lighting module (2) for a motor vehicle, the lighting module comprising a plurality of lighting units (4) stacked one on top of the other in a stacking direction (100), each lighting unit (4) comprising at least one light source configured to emit light rays, an optical element (6), a mirror (8) and a projection lens (10), the lighting module (2) comprising a support (12) on which the at least one light source and the optical element (6) of each of the lighting units (4) are arranged, the mirrors (8) and the support (12) being movable relative to the projection lenses (10) along a stacking axis (20), the support (12) being movable relative to the mirrors (8) and to the projection lenses (10) along an adjustment axis.

Description

Light module and mobility of a light unit within the light module.

[0001] The present invention relates to the field of lighting modules, and in particular to lighting modules intended for use in motor vehicles. More specifically, the present invention relates to such a lighting module comprising a plurality of superimposed lighting units that can be adjusted automatically or manually to produce a light beam whose range can be modified.

[0002] Vehicles, and in particular motor vehicles, are commonly equipped with headlights to generate various lighting functions, including lighting functions to illuminate a roadway on which the motor vehicle is traveling.

[0003] Typically, automotive headlights consist of a housing with an opening and a transparent cover that closes the opening. The housing and cover define a volume forming a compartment in which light modules are positioned. The light modules are thus protected by the transparent cover. Each light module may comprise light units, each containing at least one light source configured to emit light rays, optical elements associated with said light source to collect and direct said light rays, and at least one projection lens configured to shape these collected and directed light rays and project them outwards from the headlight and the vehicle, forming a standard beam of light suitable for performing the lighting function.

[0004] Such lighting modules can be capable of performing multiple lighting functions, including a low beam function and a high beam function, or a supplementary high beam function, meaning it can function as a high beam when the corresponding beam is projected simultaneously with the low beam function. These two lighting functions are performed by separate elements within the lighting module, due to the specific characteristics of each function.

[0005] For reasons of space or aesthetics, it may be desirable to have a projection lens that remains fixed within the light module. Indeed, the projection lens is visible from outside the vehicle when it is equipped with the light module. Therefore, keeping it stationary can be particularly advantageous.

[0006] However, the aforementioned lighting functions must be properly adjusted to provide optimal road illumination and minimize glare for other road users. These adjustments can be made on the vehicle when it is stationary, for example, on an assembly line or in a repair shop, or automatically when the vehicle is moving or starting, for example, based on information obtained from sensors on board the vehicle. For instance, these adjustments might include headlight leveling to project the beam further or shorter onto the road, and to adapt to an unusual vehicle load.These adjustments may also include a lateral adjustment of the light beam so that it is correctly centered on the road once the light module is mounted on the vehicle, or include the implementation of an adaptive lighting beam, known in particular by the English acronym DBL for "Dynamic Bending Light", in order to accompany the motor vehicle during a change of trajectory by modifying the lateral orientation of the lighting beam towards the new trajectory of the motor vehicle.

[0007] It is therefore necessary to develop lighting systems that allow the light sources and optical elements of the light units to be rotated while keeping the projection lenses fixed. For example, it must be ensured in this context that these lighting systems allow the range of the projected beam to be modified without altering the shape of the beam performing a given lighting function.

[0008] Furthermore, for other reasons such as space constraints or aesthetics, it may be desirable to have several adjacent projection lenses, each associated with a light unit. In particular, it may be desirable to arrange these projection lenses one on top of the other to form a vertical or oblique arrangement.

[0009] However, in this context, no lighting module is known that combines the desired aesthetics with a small footprint. In particular, no lighting module is known that comprises a plurality of projection lenses stacked one on top of the other in a chosen direction, and that remain fixed regardless of the adjustment made to the projected light beam.

[0010] The present invention falls within this context and relates to a light module for a motor vehicle comprising a housing and a plurality of light units stacked one on top of the other along a stacking direction and housed in the housing, each light unit comprising: - at least one light source configured to emit light rays, - an optical element, - a mirror and - a projection lens, the optical element being configured to reflect the light rays emitted by said at least one light source in the direction of the mirror, the mirror being configured to reflect the light rays reflected by the optical element in the direction of the projection lens, the projection lens being configured to project the light rays reflected by the mirror outwards from the light module along an optical axis, the projection lens having an optical center at the intersection of said projection lens and the optical axis.The projection lenses of the light units being fixed relative to the housing, the light module comprising a support on which are arranged at least one light source and the optical element of each of the light units, the mirrors and the support being movable relative to the projection lenses along a stacking axis of the projection lenses passing at plus or minus 10 mm from the optical centers of each of said projection lenses to allow the lateral adjustment of a beam formed by the rays projected outwards from the light module, the support being movable relative to the mirrors and the projection lenses along an adjustment axis passing at plus or minus 10 mm from the symmetrical point of the optical centers of each projection lens with respect to the mirror associated with said projection lenses to allow the vertical adjustment of a beam formed by the rays projected outwards from the light module.

[0011] A light unit is an element of a light module designed to generate part of a single lighting function at a given moment. More precisely, a light unit can participate in the realization of one or more lighting functions, in combination with the other light units arranged within the light module and forming part of the stack.

[0012] Within this light unit, the projection lens is configured to optically process the light beam generated by the light source and directed to the projection lens via the optical element and then the mirror, and to project onto the road scene a sub-beam forming part of an overall beam adapted to achieve the desired lighting function. It is understood that the projection lens associated with a light unit is a transparent surface designed to perform optical processing of light rays, this projection lens being intended to process only the light rays emitted by the associated light unit. The projection lenses of each light unit are stacked along the stacking axis, parallel to the stacking direction.The projection lens associated with the light unit may be a separate component from the other projection lenses or may form a single projection assembly with the other projection lenses, it being understood that each projection lens processes only the light rays emitted by its corresponding light unit. The projection lenses form a fixed element of each of the light units, and therefore of the light module as a whole. According to the invention, the projection lenses form, in particular, a fixed element compared to the support, which is movable and which in this case carries the light sources and optical elements, and which are therefore also movable.

[0013] During lateral adjustment, the mirrors and the light unit support are movable relative to the stacking axis and relative to the projection lenses, while the projection lenses remain fixed relative to the housing. During vertical adjustment, the light unit support is movable relative to the adjustment axis and relative to the projection lenses and mirrors, while the projection lenses and the light unit mirrors remain fixed relative to the housing.

[0014] In other words, for each light unit, the projection lens and mirror remain fixed while the support is moving to allow adjustment of the light beam projected by the light module during vertical adjustment, that is, when adjusting the vertical displacement of the light beam projected by the light module. Furthermore, for each light unit, the projection lens remains fixed while the support and mirror are moving to allow adjustment of the light beam projected by the light module during lateral adjustment, that is, when adjusting the lateral displacement of the light beam.Thus, when it is desired to give a lateral, or vertical, orientation to the beam projected onto the road at the output of the module, for each light unit, the mobility of the support and the mirror is controlled while the projection lens remains fixed, or the mobility of the support while the projection lens and the mirror remain fixed.

[0015] Furthermore, the light units are stacked one on top of the other along the stacking direction, such that each light unit is positioned above or below another light unit along the stacking direction. This stacking direction of the light units is specifically chosen to extend primarily along a vertical axis when the light module is installed on a motor vehicle. The light module then extends in a vertical direction when mounted on the motor vehicle. Alternatively, the stacking direction of the light units can extend along an axis inclined at + / -10° to a vertical axis when the light module is mounted on the motor vehicle.For example, the orthogonal projection of the stacking direction onto a first plane, extending parallel to the direction of travel of the motor vehicle in which the lighting device is intended to be mounted and parallel to a vertical axis, is inclined at an angle of plus or minus 10° to said vertical axis. As another example, the orthogonal projection of the stacking direction onto a second plane perpendicular to the direction of travel of the motor vehicle in which the lighting device is intended to be mounted is inclined at an angle of plus or minus 10° to a vertical axis. The lighting module then extends in an oblique direction relative to the vertical axis when mounted on the motor vehicle.This stacking of the light units thus makes it possible, on the one hand, to implement a wide variety of different styles, and on the other hand, to limit the bulk of the light module in a direction perpendicular to the stacking direction.

[0016] It is important to note that the stacking of the light units is such that each element of the light unit—that is, the projection lens, the mirror, the optical element, and at least one light source—is offset along the stacking direction relative to the same elements of the other light units in the light module. In other words, the light sources of the light units are substantially superimposed on one another along an axis parallel to the stacking direction, and the mirrors, and the optical elements respectively, are substantially superimposed on one another along an axis parallel to this stacking direction. The sources and optical elements are said to be substantially superimposed insofar as the positions of the optical elements may vary from one light unit to another, but always with the constraint that all the sources lie in the same plane formed by the support.

[0017] Stacking the light units along the stacking direction results in a stacking of the light sources on the support that extends primarily along the stacking direction. The support is a common support for all the light units. On this support, all the light units are mounted, that is, at least one light source and possibly an associated optical element. The use of mirrors to redirect the light rays reflected by the associated optical element towards the projection lens allows the light sources to be stacked on the support along the stacking direction. These mirrors are positioned between the light source and the associated projection lens and all extend in a principal plane of elongation parallel to each other. Thus, when the optical elements of the light module are moved relative to the adjustment axis, the light beam projected by the light module remains uniform and homogeneous.The use of mirrors allows the stacking direction to be changed as mentioned previously while having all the light sources installed on the same support.

[0018] Indeed, the mirror of each light unit reflects the light rays emitted by the light source towards the projection lens. Furthermore, for each light unit in the light module, the associated mirror creates a virtual image of the light source and the optical element. This virtual image of the optical element is then corrected relative to the actual optical element and aligned along the optical axis of the projection lens. The projection lens then projects an image of this virtual image of the optical element.

[0019] It is understood that in a context where all light sources and optical elements are mounted on a common support, it is not possible to align the optical elements directly with the optical axis of the associated projection lens. Thus, thanks to the mirror forming a virtual image of the optical elements, it becomes possible to have a common support for all light sources and optical elements and to have considerable freedom in the angular arrangement relative to a reference plane of the stacking direction.

[0020] The adjustment axis is defined according to the orientation of the mirrors and projection lenses, so that moving parts of the light units can be moved along this adjustment axis without impacting the light function, i.e. without the implementation of a rotational movement to generate a horizontal, respectively vertical, adjustment of the beam significantly impacting the shape of the light beam projected along the other possible adjustment direction of the beam, vertical respectively horizontal.

[0021] More specifically, the adjustment axis, around which the support rotates while the mirrors and lenses remain fixed, is defined as a straight line passing within ±10 mm of a line defined by a plurality of virtual points. In one particular example, the adjustment axis can pass through the plurality of virtual points. Each of these virtual points corresponds to the orthogonal symmetry of an optical center of the projection lens of each light unit with respect to the plane of symmetry formed by the mirror associated with each light unit.This applies in a context where, for each light unit, the mirror is oriented with respect to the projection lens in such a way that the light subbeam that is projected onto the road by the projection lens is the image of the light distribution formed at the level of the virtual image of the optical element, the virtual image of the optical element corresponding to the orthogonal symmetry of the optical element with respect to the mirror.

[0022] By defining this adjustment axis which passes close to the virtual points formed according to the orientation of the mirrors, it is possible to achieve a movement of beam deflection, for example vertical, while maintaining a coherent position of the virtual images of the light sources and optical elements with respect to their own projection lenses, and thus prevent this movement of deflection from penalizing the guidance of the light rays towards the projection lens according to an appropriate orientation allowing the realization of a desired light function.

[0023] Regarding the stacking axis, it extends along the stacking direction. This stacking axis is the second axis around which movement is organized within the light module according to the invention. It is understood that the definition of this stacking axis, which extends along the stacking direction, is specific to the arrangement of the projection lenses since it passes through, or substantially through, the center of each projection lens, and more precisely through an optical center of each of said projection lenses.The simultaneous mobility of the support and the mirrors relative to the projection lenses along the axis of stacking of the projection lenses makes it possible to manage a deflection, here the lateral deflection, of the light beam projected by the light module without impacting the other possible deflection of said light beam, since the relative position of the support, and therefore of the associated light sources, relative to the corresponding mirrors remains unchanged.

[0024] According to one feature of the invention, the mirrors and the support are rotatable about the stacking axis of the projection lenses to allow for lateral adjustment. During this rotation, the projection lenses are fixed relative to the housing. The mirrors can be fixed to the support or driven in rotation about the stacking axis simultaneously with the rotation of the support about the same axis. In other words, the mirrors and the support are rotationally fixed when the support rotates about the stacking axis.More specifically, the rotation of the support and mirrors around the stacking axis, which passes through the optical center of the fixed projection lenses, allows for the adjustment of the lateral displacement of each portion of the light beam projected by the projection lenses. This adjustment can be made over large amplitudes, enabling the implementation of an adaptive lighting beam function, of the DBL (Dynamic Bending Light) type, without compromising the vertical adjustment of the light function. Indeed, during this rotation around the stacking axis, regardless of the angular displacement, the mirror and its associated optical element remain in the same relative position with respect to each other.

[0025] According to one feature of the invention, the support is rotatable about the adjustment axis to allow for vertical adjustment. During this rotation, the mirrors and projection lenses remain fixed relative to the housing. In the context of this feature, the support is movable both relative to the mirrors and relative to the projection lenses. More specifically, the rotation of the support about the adjustment axis allows for the adjustment of the vertical displacement of each portion of the light beam projected by the projection lenses.This is due to the fact that rotating the support alters the position of the virtual images of the optical elements and the virtual images of the light sources, obtained respectively by orthogonal symmetry of the optical element and the light source with respect to the mirror of the same light unit. This is because the position of the optical elements and light sources changes. Indeed, when the support rotates around its adjustment axis, the light sources and optical elements mounted on the support rotate in the same direction. Because the mirrors straighten the light rays, the virtual images of the light sources and optical elements all have the same vertical rotation, but around different axes for each light unit.Each virtual image of the light sources and optical elements then rotates around a horizontal axis passing through the optical center of the projection lens associated with it.

[0026] According to one feature of the invention, to enable the production of a uniform and homogeneous light beam regardless of the adjustment made, the mirrors are parallel to each other. This parallelism of the mirrors ensures that, when the common support for each source is moved, these sources move relative to their respective mirrors in the same proportion.

[0027] Furthermore, the mirrors can be joined together. This joining of the mirrors ensures that each mirror remains parallel to the others regardless of the adjustment made, and facilitates the assembly of the light module.

[0028] According to one feature of the invention, the support extends along a principal extension plane comprising a straight line parallel to the stacking direction. It is understood that the support extends, like the light units, along the stacking direction. Thus, a light module can be formed extending primarily along said stacking direction.

[0029] According to one feature of the invention, for each light unit, the optical element consists of at least one reflector, the mirror being configured to form a virtual image of the reflector, and the focal point of the projection lens being located less than 10 mm from a rear edge of a virtual image of the reflector. The virtual image of the reflector may correspond to the reflection of the reflector across the plane in which the mirror extends, particularly here where the mirror is a plane mirror.

[0030] The mirror of a light unit, when considering the path of light rays within the unit, allows the light rays to be straightened towards the projection lens to reduce the overall size of the light module. In this context, the object focal point of the projection lens must be positioned on a virtual image of the reflector associated with the light source, the origin of the light rays. This virtual image aligns with the lines of sight of the rays arriving at the projection lens from the mirror, thus forming a high-quality beam of light exiting the projection lens. The virtual image of the reflector corresponds to the reflection of the reflector across the plane mirror. It is clear that the virtual image of the reflector is obtained by reflection across a plane, in this case, the plane in which the mirror is inscribed.

[0031] According to one feature of the invention, the light module comprises at least a first series of at least one light unit configured to generate a first light function and a second series of at least one light unit configured to generate a second light function, the first series and the second series being arranged on the same support.

[0032] According to one feature of the invention, the first series is configured to form a low-range lighting function and the second series is configured to form a high-range lighting function or a complementary lighting function, the second series being configured to activate concomitantly with the first series to form a high-range lighting function when the second series provides a complementary lighting function.

[0033] For example, the low-range lighting function can form what is commonly called a dipped beam function. The high-range lighting function can form what is commonly called a main beam function. It is understood that the light sources of the first and second series can be selectively activated so that the lighting module can perform each of these functions. More specifically, to perform the low-range lighting function, only the light sources of the first series are activated. When the second series performs a complementary lighting function, to perform the high-range lighting function, both the light sources of the first and second series are activated. Alternatively, the second series can perform the high-range lighting function alone, with only the light sources of the second series being activated.

[0034] According to one feature of the invention, the mobility of the support in rotation around the adjustment axis is such that the light beam projected by the light module has a vertical deflection of 16°, preferably of 10°.

[0035] According to one feature of the invention, the mobility of the support and the mirrors in rotation around the stacking axis is such that the light beam projected by the light module has a lateral deflection of 30°, preferably of 20°.

[0036] The vertical or lateral movement can thus be adjusted with the projection lenses remaining fixed, while at least the support is movable relative to the projection lenses. Specifically, the lateral movement of the light beam projected by the light module can be + / - 15° with respect to a vertical plane containing an optical axis of the light module. Specifically, the vertical movement of the light beam projected by the light module can be + / - 8° with respect to a horizontal plane containing an optical axis of the light module. Preferably, the lateral movement of the light beam projected by the light module is 20°. Specifically, the lateral movement of the light beam projected by the light module can be + / - 10° with respect to a vertical plane containing an optical axis of the light module. Preferably, the vertical movement of the light beam projected by the light module is 10°.In particular, the vertical deflection of the light beam projected by the light module can be + / - 5° relative to a horizontal plane including an optical axis of the light module.

[0037] According to one feature of the invention, the adjustment axis passes through a plurality of points respectively obtained by symmetry of the optical center of each projection lens with respect to the mirror associated with said projection lens.

[0038] The invention also relates to a lighting device intended to be mounted in a motor vehicle, the lighting device comprising a lighting module according to the present invention.

[0039] According to one feature of the invention, the orthogonal projection of the stacking direction in a first plane extending parallel to the direction of travel of the motor vehicle in which the lighting device is intended to be mounted and parallel to a vertical axis, is inclined at an angle of plus or minus 10° with respect to said vertical axis. The vertical axis is defined with reference to the lighting device when it is mounted in the motor vehicle in its normal mounting position.

[0040] According to one feature of the invention, the orthogonal projection of the stacking direction onto a second plane perpendicular to the direction of travel of the motor vehicle in which the lighting device is intended to be mounted is inclined at an angle of plus or minus 10° with respect to a vertical axis. The vertical axis is defined with reference to the lighting device when mounted in the motor vehicle in its normal mounting position.

[0041] It is important to note that during the design of the lighting module, the orientation of the stacking direction of the light units relative to the desired vertical axis after installation in the vehicle is chosen. This orientation determines the relative positions of the component elements within the lighting module, particularly the position of the mirrors relative to the optical elements and projection lenses. The ability to adapt the design of the lighting module based on the desired stacking direction relative to the vertical axis allows for easy achievement of the desired aesthetic.

[0042] Other features, details and advantages of the invention will become clearer upon reading the following description on the one hand, and several illustrative and non-limiting examples of embodiments given with reference to the attached schematic drawings on the other hand, in which:

[0043] schematically represents a light module according to the present invention in a nominal vertical adjustment position and in a nominal lateral adjustment position;

[0044] schematically represents a part of the visible light module in a first vertical adjustment position superimposed on the nominal vertical adjustment position shown in dotted lines;

[0045] schematically represents the part of the light module visible on the screen in a second vertical adjustment position superimposed on the nominal vertical adjustment position shown in dotted lines;

[0046] schematically represents a beam of light projected by the light module onto a screen at 25 meters when the light module is in its nominal vertical adjustment position visible on the;

[0047] schematically represents a beam of light projected by the light module onto a screen at 25 meters when the light module is in its first vertical adjustment position visible on the;

[0048] schematically represents a beam of light projected by the light module onto a screen at 25 meters when the light module is in its second vertical adjustment position visible on the;

[0049] schematically represents a part of the visible light module in a first lateral adjustment position superimposed on the nominal lateral adjustment position shown in dotted lines;

[0050] schematically represents the part of the light module visible on the screen in a second lateral adjustment position superimposed on the nominal lateral adjustment position shown in dotted lines;

[0051] schematically represents a beam of light projected by the light module onto a screen at 25 meters when the light module is in its nominal lateral adjustment position visible on the;

[0052] schematically represents a beam of light projected by the light module onto a screen at 25 meters when the light module is in its first visible lateral adjustment position on the;

[0053] schematically represents a beam of light projected by the light module onto a screen at 25 meters when the light module is in its second lateral adjustment position visible on the;

[0054] schematically represents a luminous unit of the luminous module highlighting the paths of rays from the light source to the projection lens;

[0055] schematically represents the light module visible on the, in which a stacking direction of the light units is inclined in a plane parallel to a direction of advancement of a motor vehicle equipped with the light module;

[0056] schematically represents the light module visible on the, in which the stacking direction of the light units is inclined with respect to a plane perpendicular to the direction of travel of a motor vehicle equipped with the light module.

[0057] The features, variants, and different embodiments of the invention may be combined in various ways, provided they are not incompatible or mutually exclusive. In particular, variants of the invention may be conceived comprising only a selection of features, described hereafter in isolation from the other described features, if this selection of features is sufficient to confer a technical advantage and / or to differentiate the invention from the prior art.

[0058] In the detailed description that follows, the terms "longitudinal," "transverse," and "vertical" refer to the orientation of a light module according to the invention. A longitudinal direction corresponds to the direction of travel of a vehicle equipped with the light module, this longitudinal direction being parallel to a longitudinal axis L of a frame of reference L, V, T illustrated in the figures. A vertical direction corresponds to a direction parallel to a vertical axis V of the frame of reference L, V, T, this vertical axis V being perpendicular to the direction of travel of a motor vehicle equipped with the light module and perpendicular to the road on which said vehicle is traveling. Finally, a transverse direction corresponds to a direction parallel to a transverse axis T of the frame of reference L, V, T, this transverse axis T being perpendicular to the longitudinal axis L and to the vertical axis V.

[0059] Figure 1 schematically represents a light module 2 according to the present invention and intended for use in a motor vehicle. The light module 2 comprises a housing 3 and a plurality of light units 4, each comprising at least one light source, visible on Figure 1, an optical element 6, a mirror 8, and a projection lens 10. The plurality of light units 4 are housed in the housing 3 of the light module 2.

[0060] At least one light source of each light unit 4 is configured to emit light rays. The optical element 6 is configured to collect said light rays emitted by the light source and to reflect them, that is, to direct them, towards the mirror 8. The optical element 6 may, as can be seen in the figure, be formed of a single reflector or of a plurality of reflectors. In the case where the optical element 6 of a light unit 4 comprises a plurality of reflectors, the light unit 4 comprises a plurality of light sources, and each light source is associated with a reflector.

[0061] When considering the path of light rays within a light unit, the mirror 8 of this light unit 4 allows the light rays reflected by the optical element 6 of said light unit 4 to be reflected towards the projection lens 10. It should be noted that each mirror 8 of the light module 2 is associated with a unique optical element 6 belonging to the same light unit 4 as the mirror 8 considered.

[0062] In the embodiment shown, the light module 2 comprises a first series of 16 light units and a second series of 14 light units. The 4 light units of the first series of 16 are arranged side by side and configured to form a first light function that constitutes the top of a regulatory beam projected by the light module 2. More specifically, the 4 light units of the first series of 16 provide a low-range light function, more commonly known as dipped beams. This light function is characterized by a beam cutoff optimized to provide illumination when vehicles traveling in opposite directions pass each other. The light units of the second series of 14 are arranged side by side and configured to form a second light function that constitutes the bottom of the aforementioned regulatory beam projected by the light module 2.More specifically, the four light units of the second series of four contribute to providing a high-range lighting function, more commonly known as high beams or auxiliary high beams. Indeed, the second series of four light units can participate, alone or in combination with the first series of six light units, in providing a high beam function. Furthermore, the first series of six units can be selectively activated so that when the second series of four light units alone provides a high beam function, the first series of six light units is deactivated, and when the second series of four light units provides an auxiliary high beam function, the first series of four light units is activated. Thus, the first series of four and the second series of four light units work together to provide the high beam function.It should be noted that the following description, relating to a light module 2 comprising a plurality of light units, each ensuring a distinct light function, applies mutatis mutandis to a light module 2 comprising a plurality of light units together ensuring the same light function.

[0063] More specifically, the light units 4 of the first series 16 and of the second series 14 are stacked one on top of the other along a stacking direction 100 which, in the embodiment shown, is substantially parallel to the vertical axis V. It should be noted that alternatively, the stacking direction 100 could be inclined with respect to the vertical axis V, as will be explained in more detail later in the description.

[0064] To enable this stacking, the light module 2 includes a support 12 which, in the embodiment shown, is formed from a printed circuit board. This support 12 extends along a principal extension plane which includes at least one straight line parallel to the stacking direction 100. In the embodiment shown, at least one light source and the optical element 6 of each light unit 4 are arranged on the support 12 substantially along the vertical principal extension direction of the support 12. Thus, each light source and each associated optical element 6 arranged on the support 12 are offset from each other substantially along a component corresponding to the stacking direction 100, here corresponding to a vertical component.It should be noted that the different light sources may not be exactly aligned along a straight line parallel to the stacking direction, but that they are all arranged in the extension plane of the support.

[0065] In other words, the stacking of the light units 4 on top of each other is particularly remarkable in that at least one light source, optical element 6, mirror 8 and projection lens 10 of a light unit 4 are all respectively offset along the stacking direction 100 relative to the corresponding component of an adjacent light unit 4.

[0066] Such an arrangement of the light sources and optical elements 6 on the support 12 makes it possible to form a light module 2 extending primarily along the stacking direction 100, that is, vertically in this case, although it could be inclined relative to this vertical direction, for example by + / -10°, as will be seen later. Such a light module 2 can thus meet aesthetic and space constraints requiring an arrangement of the light units along the stacking direction 100.

[0067] In this context, the presence of a mirror 8 interposed between the optical element 6 and the projection lens 10 within the same light unit 4, when considering the path of the light rays within this light unit, makes it possible to straighten the light rays emitted by the light source towards the projection lens 10. Indeed, the arrangement following the direction of stacking of the light units 4 with respect to each other requires, in order to form a regulatory light beam, to redirect the light rays reflected by the optical elements 6.

[0068] Within each light unit, the mirror 8 extends in a principal plane of elongation from a proximal end of the support 12 to a proximal end of the projection lens 10, with at least one reflective surface facing both the optical element and the projection lens, so as to reflect the light rays as described above. It should be noted that the mirror 8 may, without departing from the scope of the invention, have a slight curvature to enhance its mechanical strength, in particular by having a radius of curvature greater than 100 mm, preferably greater than 200 mm. However, considering the dimensions of the mirror 8, the radius of curvature is sufficiently large for the mirror to appear flat and for the light rays reaching the reflective surface of said mirror 8 to be unaffected by the slight curvature of the mirror 8.

[0069] All 8 mirrors of the light module 2 are parallel to each other. This configuration of the 8 mirrors allows for uniform adjustment of the inclination of the regulatory beam projected by the light module during the adjustment of light module 2. This adjustment will be described in more detail in the following section.

[0070] As described previously, when considering the path of light rays within a light unit, the light rays reaching a mirror 8 from an optical element 6 are reflected towards the associated projection lens 10. This projection lens 10 is part of a projection assembly 18.

[0071] The projection lenses 10 are stacked one on top of the other along a stacking axis 20, extending substantially parallel to the stacking direction 100 of the light units 4, to form the projection assembly 18. It should be noted that the projection lenses 10 are in contact with each other so that the assembly of projection lenses 10 forms a single projection assembly 18.

[0072] In the embodiment shown, the stacking axis 20 of the projection lenses 10 passes through the projection lenses 10, and more precisely through an optical center of each of said projection lenses 10. This optical center is considered to be at the intersection of said projection lens 10 and the optical axis of this projection lens 10. It should be noted that, without departing from the context of the present invention, the stacking axis 20 may pass at approximately 10 mm from the optical center of each projection lens 10; preferably, the stacking axis 20 passes at approximately 5 mm from the optical center of each projection lens 10.

[0073] It should be noted that in the embodiment represented by figures 1 to 12, the stacking axis 20 of the projection lenses 10 extends substantially parallel to the vertical axis V. However, as can be seen on the and if we consider a motor vehicle 1 in which a lighting device including the lighting module 2 is intended to be mounted, the stacking axis 20 of the projection lenses 10 can be inclined in a first plane, extending parallel to the direction of advance of the motor vehicle and parallel to the vertical axis V associated with this vehicle, at an angle A between plus or minus 10° with respect to the vertical axis V, preferably plus or minus 5° with respect to the vertical axis V.

[0074] More specifically, and as can be seen in the figure, which illustrates both the vehicle seen from the side with a light module schematically represented by a box, and a detail of the light module in the same orientation, it can be observed that the stacking axis 20 of the projection lenses is inclined relative to the vertical axis V by this angle A. It is understood from the above that the foreground extends along two directions respectively defined by the longitudinal axis L and the vertical axis V. The light module thus has an orientation that is not vertical once mounted on the vehicle. The upper end of the light module is located further back than the lower end of the light module.

[0075] Thus, the light module 2 can adapt to the different possible curves of the vehicle's bodywork.

[0076] Furthermore, and as can be seen on the stacking axis 20 of the projection lenses 10, it can be inclined with respect to the vertical axis V, in a second plane perpendicular to the direction of advance of the motor vehicle 1 in which the light device is intended to be mounted, by an angle B of plus or minus 10°.

[0077] More specifically, and as can be seen on the figure, which illustrates both the vehicle seen from the front with a light module schematically represented by a box and a detail of the light module in the same orientation, we can observe that the stacking axis of the projection lenses is inclined relative to the vertical axis V by this angle B. We understand from the above that the second plane extends along two directions respectively defined by the transverse axis T and the vertical axis V.

[0078] Here again, such a potential inclination of the stacking axis of the projection lenses allows the light module 2 to be configured so that it can easily adapt to the different aesthetic or technical configurations of the motor vehicle in order to best integrate the light module.

[0079] Figures 13 and 14 illustrate two specific cases in which the stacking direction is inclined only in the first plane, and only in the second plane, respectively. However, it is possible to couple a 100° inclination of the stacking direction in the first plane with respect to the vertical axis and a 100° inclination of the stacking direction in the second plane with respect to the vertical axis.

[0080] In this case, the orthogonal projection of the stacking direction onto the first plane is inclined at an angle A between ±30° and ±30° with respect to the vertical axis in that first plane. And, the orthogonal projection of the stacking direction onto the second plane is inclined at an angle B between ±90° and ±90° with respect to the vertical axis in that second plane.

[0081] Preferably, the orthogonal projection of the stacking direction in the first plane is inclined at an angle of plus or minus 5° with respect to the vertical axis V. Preferably, the orthogonal projection of the stacking direction in the second plane is inclined at an angle of plus or minus 5° with respect to the vertical axis V.

[0082] The choice of the stacking direction of the 100 light units relative to the vertical axis V, once the light module is mounted on the vehicle, is made before the module's design, as this choice will dictate the positioning of the individual light unit elements relative to each other. If a different stacking direction relative to the vertical axis is desired, then a different module must be designed. Indeed, the stacking direction relative to the vertical axis is not adjusted after the fact, i.e., once the module is mounted on the vehicle; it is a parameter that must be considered both before and during the module's design. Once the module is mounted in its position on the vehicle, the projection lenses remain fixed, and beam adjustments are made through the movement of the light units.

[0083] The projection lenses 10 are configured to project the light rays reflected by the mirrors 8, each associated with a corresponding projection lens 10, outwards from the light module 2. To this end, the projection lenses 10 are capable of optically processing the light rays to shape them into a compliant light beam. More specifically, each projection lens 10 projects an image of the virtual image of the associated reflector 6, this virtual image being obtained by symmetry with the mirrors 8.

[0084] In the figure, the path of light rays emitted by a light source 5 associated with an optical element 6 of a light unit 4 is shown. This allows us to understand that the mirror 8 creates a virtual image 13 of the optical element 6. The projection lens 10 is configured so that the object focal point of the projection lens 10 is located at the level of said virtual image 13 of the optical element 6. Thanks to the positioning and orientation of the mirror 8, the virtual image 13 of the optical element 6 is substantially aligned with an optical axis 21 of the projection lens 10, passing through the object focal point 11 and an optical center 19 of said projection lens 10. Indeed, the mirror 8 of a light unit 4 is oriented so that the lower edge of the virtual image 13 of the optical element 6 is mainly contained in a horizontal plane parallel, here, to the longitudinal axis L and the transverse axis T.Moreover, this virtual image is formed from a symmetry of a real object, that is to say of the reflector 6, whose lower edge is mainly contained in a plane parallel to the extension plane of the support 12, this extension plane 12 containing at least one axis parallel to the stacking direction 100.

[0085] The mirror 8 thus allows the light rays emitted by the light source 5 to be redirected. Thus, all the light sources 5 of the light module 2 can be arranged on the same support 12 with the light rays emitted by these light sources 5 which are redirected by the mirrors 8 so that the projection lenses can project the light beam in accordance with the regulations.

[0086] Within each light unit 4, the projection lens 10, the mirror 8 and the optical element 6 are positioned between them so that an object focus 11 of the projection lens 10 is located near a virtual image 13 of a reflective surface of the optical element 6. This virtual image 13 is obtained by symmetry of the optical element 6 with respect to the mirror 8.

[0087] The positioning of the object focal point 11 of the projection lens 10 at the level of the virtual image 13 results from the orientation of the image of the reflector 6 that we wish to project. Indeed, an object focal point of the projection lens 10 positioned directly at the level of the reflector 6 would lead to an unsuitable orientation of the image of the reflector 6 projected by the projection lens 10 for achieving the desired lighting function. Thus, by positioning the object focal point 11 of the projection lens 10 at the level of the virtual image 13 of the reflector 6, the projection lens projects an image of the reflector 6 whose orientation is suitable for achieving the desired lighting function.

[0088] The projection lens 10 thus has the role of projecting to infinity the image of the virtual image of the optical element 6 illuminated by the light source 4. In particular, the object focal point 11 of the projection lens 10 can be located between a front edge 15 and a rear edge of the virtual image 13 of the optical element 6, along the optical axis of the projection lens 10. According to an example, the object focal point 11 of the projection lens 10 is located at the rear edge of the virtual image 13, at a distance of less than 10 mm from the rear edge.

[0089] The configuration of the different elements of the light module 2 allows that after the light rays from the light source 5 are reflected by a reflective surface of the optical element 6, they move towards the mirror 8 to be then straightened towards the projection lens 10 to form, according to their position relative to the projection lens 10, a portion of a light beam which can form or participate in forming a complementary high beam or a low beam.

[0090] We will now describe in more detail the vertical and lateral adjustments of the light beam made possible by the light module according to the invention, and the means implemented in this light module to enable adjustment along one of the vertical or horizontal components without interfering with the other component. It should be noted that the mechanical configuration of the system, which will be described below, can be accompanied by an operating mode in which the vertical and lateral adjustments are performed separately. This ensures that the lateral adjustment, or vertical adjustment, of the light beam does not affect the vertical adjustment, or lateral adjustment, that was performed previously or will be performed subsequently, provided that the lateral adjustment, or vertical adjustment, has only a lateral component, or vertical adjustment, as will now be described.

[0091] Figures 1 to 3 illustrate a vertical adjustment of the light beam projected by the light module 2. More specifically, 1 represents the light module 2 in a nominal vertical adjustment position, while 2 represents the light module 2 in a first vertical adjustment position and 3 represents the light module 2 in a second vertical adjustment position.

[0092] This vertical adjustment of the light beam is made possible by means of the support 12 which is movable relative to the mirrors 8 along an adjustment axis 22, visible in figures 1 to 3.

[0093] Figures 4 to 6 illustrate, according to an embodiment of the invention, a projection of the light beam at 25 meters onto a screen respectively when the light module 2 is in its nominal vertical adjustment position, in its first vertical adjustment position and in its second vertical adjustment position.

[0094] The nominal vertical adjustment position allows, as seen on the figure, the projection of a nominal regulatory light beam which is regulatedly centered on a horizon line 24. Here, the beam is a cut-off beam with a bump 26, formed in the cut-off line, which is positioned substantially on this horizon line 24.

[0095] In the first vertical adjustment position, visible in Figure 1, the light beam projected by the light module 2 is vertically offset by +2° compared to the light beam projected by the same module when it is in its nominal vertical adjustment position. Thus, it can be noted in the example illustrated that the offset 26 of the cutoff line is positioned significantly above the horizon line 24.

[0096] In the second vertical adjustment position, visible in Figure 1, the light beam projected by the light module 2 is vertically offset by -2° compared to the light beam projected by the same module when it is in its nominal vertical adjustment position. Thus, it can be noted in the example illustrated that the offset 26 of the cutoff line is shifted below the horizon line 24.

[0097] It should be noted that the light module 2 can assume a plurality of vertical adjustment positions between the first and second vertical adjustment positions. Thus, the light beam projected by the light module can be adjusted vertically with an amplitude of plus or minus 8°, and preferably plus or minus 5°.

[0098] The vertical displacement of the light beam projected by the light module 2 is controlled by the displacement of the support 12, which is movable relative to the mirrors 8 and the projection lenses 10 along an adjustment axis 22, visible in figures 1 to 3. More specifically, the support 12 is movable in rotation around the adjustment axis 22 and it is the control of the angle of rotation of the support around the adjustment axis 22 which determines the amplitude of vertical displacement of the projected light beam.

[0099] Figures 1 to 3 illustrate the mobility of the support 12 relative to the projection lenses 10 and the mirrors 8. To facilitate the reading of Figures 2 and 3, the nominal vertical adjustment position of the light units, as seen in Figure 1, is represented by dashed lines in Figures 2 and 3. In Figure 1, a first rotation RV1 of the support 12 around the adjustment axis is shown, in a given direction of rotation allowing the beam to be moved vertically in accordance with Figure 1, with an upward vertical deflection of the projected beam. Conversely, in Figure 3, a second rotation RV2 of the support 12 around the adjustment axis is shown, in a given direction of rotation opposite to that of the first rotation RV1, allowing the beam to be moved vertically in accordance with Figure 1, with a downward vertical deflection of the projected beam.

[0100] The adjustment axis 22 passes through a plurality of virtual points 17, visible on the, respectively obtained by symmetry of the optical center 19 of each projection lens 10 with respect to the mirror 8 associated with the projection lens 10 considered.

[0101] More precisely, each of the said virtual points 17 of the plurality of virtual points is obtained by forming the symmetric of the optical center 19 of a projection lens 10 with respect to the mirror 8 of the same luminous unit 4. Thus, we obtain a number of virtual points 17 equal to the number of luminous units 4 of the luminous module 2 and the adjustment axis 22 passes through this plurality of virtual points 17 at plus or minus 10 mm from each virtual point 17, preferably plus or minus 5 mm.

[0102] The arrangement of the mirrors which remain fixed and the fact that the support rotates around an axis defined by points obtained by symmetry with respect to these mirrors allows for a component of beam displacement which is only vertical during the rotation of the support, so that the vertical adjustment of the light module does not have an impact on the lateral adjustment of the light beam projected by this light module.

[0103] Furthermore, it is noteworthy that during the adjustment of the considered travel, the position of the object focal point 11 of the projection lens 10 remains unchanged. The small degrees of travel achieved during the adjustments considered allow the virtual image 13 of the optical element 6 to be moved from its nominal position to a sufficiently small extent so as not to degrade the quality of the projection produced by the light module.

[0104] The fact that each optical element 6 of a light unit 4 is arranged on the same support 12 allows, by rotating the support 12 relative to the adjustment axis 22, for each optical element 6 of the set of light units 4 to be moved relative to the projection lens 10 and the associated mirror 8 by the same amount of displacement along the adjustment axis 22, which has the effect of generating the same angular amplitude of vertical displacement of the projected beam. It should be noted that in an alternative embodiment of the invention in which the focal length between the projection lens 10 and the virtual image of the reflector differs from one light unit 4 to another, the angular amplitude of vertical displacement of the projected beam remains the same because the adjustment axis 22 passes substantially through the virtual points 17.

[0105] To achieve this rotation of the support around the adjustment axis, and without this example being limiting of the invention, the support 12 can be a plate carrying the light sources and optical elements 6, and this plate carrying has at each end lugs forming pins mounted rotatably in a bearing attached to a housing of the light module 2, these pins being aligned on the adjustment axis 22.

[0106] Figures 1, 7 and 8 illustrate a lateral adjustment of the light beam projected by the light module 2. More specifically, 1 represents the light module 2 in a nominal lateral adjustment position, while 2 represents the light module 2 in a first lateral adjustment position and 3 represents the light module 2 in a second lateral adjustment position.

[0107] Figures 9 to 11 illustrate, according to an embodiment of the invention, a projection of the light beam at 25 meters onto a screen respectively when the light module 2 is in its nominal lateral adjustment position, in its first lateral adjustment position and in its second lateral adjustment position.

[0108] The nominal lateral adjustment position, as shown in the figure, allows the projection of a nominal regulatory light beam. This nominal regulatory light beam is said to be centered on a vertical line 28 perpendicular to the horizon line 24.

[0109] In the first lateral adjustment position, visible in Figure 1, the light beam projected by the light module 2 is laterally offset by -7° compared to the light beam projected by the same module when it is in its nominal lateral adjustment position. As shown in Figure 1, this offset of the beam to the left of the road, or of the screen onto which the beam is projected, has the effect of shifting the bump 26 formed in the cutoff line to the other side of the vertical line 28. This allows the portion of the road onto which the beam is projected to be significantly modified, illuminating the inside of the curve when the vehicle turns left. This is achieved by implementing a function called DBL (Dynamic Bending Light), which allows the light beam to be rotated according to the steering angle.

[0110] In the second lateral adjustment position, visible in the diagram, the light beam projected by the light module 2 is laterally offset by +7° compared to the light beam projected by the light module 2 when it is in its nominal lateral adjustment position. As visible in the diagram, such an offset of the beam to the right of the road, or of the screen onto which the beam is projected, has the effect of moving the bump 26 formed in the cutoff line away from the vertical line 28 and, in addition to what has just been described, of enabling the DBL function when the vehicle turns right.

[0111] It should be noted that the light module 2 can assume a plurality of lateral adjustment positions between the first and second lateral adjustment positions. Thus, the light beam projected by the light module can be adjusted laterally with an amplitude of 30°.

[0112] Such an angular opening for the lateral adjustment of the light beam projected by the light module 2 is here made possible by a joint mobility of the mirrors 8 and the support 12 relative to the projection lenses 10, with a simultaneous rotation of the mirrors 8 and the support 12 around the stacking axis 20 of the projection lenses 10.

[0113] In accordance with what was done for figures 1 to 3, figures 1, 7 and 8 aim to highlight this mobility of the support 12 and the mirrors 8 relative to the projection lenses 10. To facilitate the reading of figures 7 and 8, the nominal lateral adjustment position of the light units as seen in the diagram is represented by dashed lines in figures 7 and 8. In the diagram, a first rotation RL1 of the support 12 and the mirrors 8 around the stacking axis 20 is shown, in a given direction of rotation allowing the beam to be moved laterally in accordance with the diagram, with a lateral deflection of the projected beam to the right.Conversely, on the, we made visible a second rotation RL2 of the support 12 and the mirrors 8 around the stacking axis 20, in a given direction of rotation opposite to that of the first rotation RL1, allowing the beam to be moved laterally in accordance with the, with a lateral deflection of the beam projected to the left.

[0114] As mentioned, the lateral adjustment of the light beam is such that the light module 2 is able to provide a DBL function for the English acronym "Dynamic Bending Light" in order to accompany the motor vehicle during a change of trajectory by modifying the lateral orientation of the lighting beam in the direction of the new trajectory of the motor vehicle.

[0115] For this purpose, the mirrors 8 and the support 12 are rotatable around the stacking axis 20 of the projection lenses 10 when lateral beam adjustment is desired. More specifically, lateral beam adjustment involves the simultaneous rotation, around this stacking axis, of all the components of the light units except the projection lenses, each optical element 6 and each light source of a light unit 4 being fixed on the same support 12, common to all the light units. Therefore, by allowing the support 12 to rotate relative to the stacking axis 20 of the projection lenses 10, it is ensured that each optical element 6 of the set of light units 4 is movable relative to its associated projection lens 10 at the same angle of inclination, and, in the case of lateral beam adjustment, the light module is configured so that the mirrors 8 rotate simultaneously with the support 12 around the same axis 20.

[0116] It is noteworthy that this simultaneous rotation of all the components of the light units allows for the formation of a uniform light beam in the various lateral adjustment positions of the light beam, and that this rotation only affects the lateral adjustment and does not impact the vertical adjustment. Indeed, during the lateral movement, the distance between the mirror 8 and the optical element 6, which reflects the rays emitted by the light source, remains constant, with the rear edge of the virtual image 13, as previously defined, being displaced only in a direction perpendicular to the stacking axis around which the mirror and the optical element rotate as a unit.Since the stacking axis is parallel to the vertical adjustment direction, it is understood that the movement of the rear edge of the virtual image relative to the focus of the projection lens, which remains fixed, occurs without any component impacting the vertical adjustment.

[0117] The light module includes means for controlling the rotation of the support and means for controlling the rotation of the mirrors, these control means being synchronized so that the rotation can be simultaneous.

[0118] During this lateral adjustment, with the simultaneous rotation of the mirrors 8 and the support 12 around the stacking axis 20, the projection lens 10 of a light unit 4 is fixed relative to the housing 3. Thus, by making the support 12, i.e. the optical elements 6, and the mirrors 8 movable relative to the projection lenses 10, it is possible to adjust the inclination of the light beam projected by the light module 2 without having to change the inclination of the projection lens 10.

[0119] According to one embodiment of the invention, each mirror 8 of the light module 2 is fixed to the other mirrors 8. Thus, the rotation of the mirrors 8 around the stacking axis 20 of the projection lenses 10 can be achieved by driving a single mirror 8 in rotation around said stacking axis 20. This also has the effect of facilitating assembly since it is necessary to ensure that all the mirrors are parallel.

[0120] The vertical and lateral movements of the light beam projected by the light module 2 can be adjusted independently of each other. Thus, it is understood that the light beam projected by the light module 2 can take on all possible angles of inclination within a lateral movement range of 30°, preferably 20°, and a vertical movement range of 16°, preferably 10°.

[0121] The present invention achieves its objective by proposing a light module comprising a plurality of light units stacked one on top of the other to form an arrangement along a stacking direction of the light module while allowing adaptive adjustments of the light beam projected by the light module whether in lateral or vertical movement.

[0122] The present invention is not limited to the means and configurations described and illustrated herein, and also extends to any equivalent means and configuration as well as any technically operative combination of such means.

Claims

Light module (2) for a motor vehicle comprising a housing (3), a plurality of light units (4) stacked one on top of the other along a stacking direction (100) and housed in the housing (3), each light unit (4) comprising: - at least one light source configured to emit light rays, - an optical element (6), - a mirror (8) and - a projection lens (10), the optical element (6) being configured to reflect the light rays emitted by said at least one light source in the direction of the mirror (8), the mirror (8) being configured to reflect the light rays reflected by the optical element (6) in the direction of the projection lens (10), the projection lens (10) being configured to project the light rays reflected by the mirror (8) outwards from the light module (2) along an optical axis,the projection lens (10) having an optical center at the intersection of said projection lens (10) and the optical axis, the projection lenses of the light units being fixed relative to the housing, the light module (2) comprising a support (12) on which are arranged at least one light source and the optical element (6) of each of the light units (4), the mirrors (8) and the support (12) being movable relative to the projection lenses (10) along a stacking axis (20) of the projection lenses (10) passing at plus or minus 10mm from the optical centers of each of said projection lenses (10) to allow the lateral adjustment of a beam formed by the rays projected outwards from the light module,the support (12) being movable relative to the mirrors (8) and the projection lenses (10) along an adjustment axis (22) passing at plus or minus 10 mm from the symmetrical point of the optical centers of each projection lens with respect to the mirror associated with said projection lenses, in order to allow the vertical adjustment of a beam formed by the rays projected outwards from the light module. Light module (2) according to claim 1, wherein the mirrors (8) and the support (12) are movable in rotation about the stacking axis (20) of the projection lenses (10) to allow said lateral adjustment. Light module (2) according to any one of claims 1 or 2, wherein the support (12) is movable in rotation about the adjustment axis (22) to allow said vertical adjustment. Light module (2) according to any one of claims 1 to 3, wherein the support (12) extends along a main extension plane comprising a straight line parallel to the stacking direction (100). Light module (2) according to any one of claims 1 to 4, wherein, for each light unit, the optical element (6) is formed of at least one reflector, the mirror (8) being configured to form a virtual image of the reflector and the focus (11) of the projection lens (10) is disposed at a distance of less than 10 mm from a rear edge of a virtual image (13) of the reflector. Light module (2) according to any one of claims 1 to 5, comprising at least a first series (14) of at least one light unit (4) configured to generate a first light function and a second series (16) of at least one light unit (4) configured to generate a second light function, the first series (14) and the second series (16) being arranged on the same support (12). Light module (2) according to any one of the preceding claims, in combination with claim 3, wherein the mobility of the support (12) in rotation around the adjustment axis is such that the light beam projected by the light module has a vertical deflection of 16°. Light module (2) according to any one of the preceding claims, in combination with claim 2, wherein the mobility of the support (12) and the mirrors (8) in rotation about the stacking axis is such that the light beam projected by the light module has a lateral deflection of 30°. Lighting device intended to be mounted in a motor vehicle (1), the lighting device comprising a lighting module (2) according to any one of claims 1 to 8. A lighting device according to claim 9, wherein the orthogonal projection of the stacking direction (100) in a first plane, extending parallel to the direction of travel of the motor vehicle (1) in which the lighting device is intended to be mounted and parallel to a vertical axis, is inclined at an angle between plus or minus 10° with respect to said vertical axis. A lighting device according to any one of claims 9 and 10, wherein the orthogonal projection of the stacking direction (100) into a second plane perpendicular to the direction of travel of the motor vehicle (1) in which the lighting device is intended to be mounted is inclined at an angle between plus and minus 10° with respect to a vertical axis.

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