Lighting module for a motor vehicle

Abstract

The invention relates to a lighting module comprising an upper row of upper light sources (1), a lower row of lower light sources (2), an upper row of upper light guides (3), a lower row of lower light guides (4), a primary lens (5) comprising an exit optical surface (5b) and a secondary optical device (6) comprising at least one secondary lens (7) having an object focal plane (7a) and an optical axis (7b). Each upper light guide (3) is associated with a separate upper source and comprises an upper entry face (3a) and an upper exit face (3b). Each lower light guide (4) is associated with a separate lower source and comprises a lower entry face (4a) and a lower exit face (4b). The upper exit face of the upper light guides is offset along the optical axis relative to the object focal plane.

Description

Lighting module for motor vehicle

[0001] The present invention relates to the field of lighting, which includes signaling, and to the organs, in particular optical organs, which participate therein. It finds a particularly advantageous application in the field of motor vehicles. In particular, it relates to a lighting module. STATE OF THE ART

[0002] In the automotive sector, we know of modules capable of emitting light beams, also called lighting and / or signaling functions.

[0003] These modules must comply with current regulations, in particular to ensure sufficient safety and comfort, by emitting light specifically in certain areas so as to exclude areas that should remain dark and in a uniform manner so as not to leave dark areas in the area that should be lit. One of the constraints that manufacturers are also faced with is reducing the size of the module in order to achieve a module that is as easy to use as possible.

[0004] In order to best achieve these different objectives and in particular to obtain a device providing a beam that comfortably illuminates the road, a technical solution implementing a device comprising a particular configuration of the output diopter of the primary lens has been proposed in document EP3301347 A1.

[0005] However, this type of technical solution has drawbacks, notably the fact that it is limited in terms of safety and comfort.

[0006] An object of the present invention is therefore to propose a lighting module making it possible to overcome all or part of the drawbacks cited.

[0007] Other objects, features, and advantages of the present invention will become apparent from the following description and accompanying drawings. It is understood that other advantages may be incorporated. SUMMARY

[0008] To achieve this objective, according to one embodiment, a lighting module is provided comprising:an upper row of upper light sources, light rays from the upper row being configured to produce a first beam,an upper row of upper light guides each comprising an upper input face and an upper output face, the upper light guides each being distinctly associated with an upper light source, each upper light guide conducting light rays from the associated upper light source from the upper input face to the upper output face of the upper light guide,a lower row of lower light sources, light rays from the lower row being configured to produce a second beam,a lower row of lower light guides each comprising a lower input face and a lower output face, the lower light guides each being distinctly associated with a lower light source, each lower light guide conducting light rays from the associated lower light source from the lower input face to the lower output face of the lower light guide,a primary lens comprising an input diopter and an output diopter, the output diopter being configured to receive the light rays from the upper light sources and the lower light sources,a secondary optical device comprising at least one secondary lens and having a focal length, an object focal plane and an optical axis,the secondary optical device being positioned along the optical axis after the primary lens, characterized in that the upper exit face of the upper light guides is offset along the optical axis relative to the object focal plane and in that the primary lens comprises an entrance diopter, the entrance diopter being in contact with the upper exit face of the upper light guides and the lower exit face of the lower light guides.,

[0009] This lighting module makes it possible to obtain a variety of lighting configurations depending on the position of the upper output faces of the upper light guides relative to the object focal plane of the secondary optical device. Indeed, depending on the position of the upper output faces of the upper light guides relative to the object focal plane of the secondary optical device, the image of the light rays coming from the upper row (whose object is at the level of the upper output faces of the upper light guides) will not have the same position. In particular, the image of the light rays coming from the upper row, due to the positioning of the upper output faces outside the object focal plane, will give more homogeneous lighting (because it will be blurred) (in comparison to the case where the upper output faces are at the level of the object focal plane).Indeed, the configuration of the invention makes it possible to avoid (or limit) dark areas (more precisely dark bands or those with a drop in light intensity) within the lighting between the projection areas of each light source, these dark areas being due to the disjointed positioning of the light sources between them. Furthermore, the homogeneity of the lighting from the upper row of sources will also provide safety and comfort of use for the user who will have a fair assessment of the lighting in front of him and in particular of the position and size of the illuminated structures (these will therefore not be illuminated in an inhomogeneous manner, suggesting in particular that they are smaller than their actual size).

[0010] According to an advantageous embodiment, the upper exit face 3b of the upper light guides 3 is offset along the optical axis 7b relative to the lower exit face 4b of the lower light guides 4.

[0011] Since the invention provides the possibility of positioning the upper output faces and the lower output faces differently relative to the object focal plane of the secondary optical device, the invention will make it possible to vary the position of the image of the rays coming from the upper row relative to those of the rays coming from the lower row, in particular the image of the light rays coming from the lower row may be at infinity so as to produce a beam projecting over a long distance (in comparison with that of the light rays coming from the upper row which may have a reduced range). This possibility will provide additional means for increasing the safety and comfort provided by the lighting module.

[0012] A vehicle equipped with at least one such module, and preferably at least one pair of such modules, each of the modules in the pair equipping one side of the front face of the vehicle is also presented. BRIEF DESCRIPTION OF THE FIGURES

[0013] The aims, objects, as well as the characteristics and advantages of the invention will emerge more clearly from the detailed description of an embodiment thereof which is illustrated by the following accompanying drawings in which:

[0014] The figure represents a side view of the lighting module according to the invention.

[0015] The figure represents a top view of the lighting module according to the invention.

[0016] The figure represents a bottom view of the lighting module according to the invention.

[0017] The figure represents the sectional view along section AA of the lighting module according to the invention.

[0018] The drawings are given by way of example and are not limiting of the invention. They constitute schematic representations of principle intended to facilitate the understanding of the invention and are not necessarily to the scale of practical applications. DETAILED DESCRIPTION

[0019] Before commencing a detailed review of embodiments of the invention, optional features which may optionally be used in combination or alternatively are set out below:

[0020] According to one example, the upper exit face 3b of the upper light guides 3 is offset along the optical axis 7b relative to the object focal plane 7a by a distance dist so as to move away from the exit diopter 5b.

[0021] For example, the distance dist is greater than or equal to 3 cm.

[0022] According to one example, the distance dist is less than or equal to 5 cm, and preferably 4 cm.

[0023] According to an example, the distance dist is between 5% and 10% of the focal length F.

[0024] According to one example, the secondary optical device 6 comprises two secondary lenses 7.

[0025] Thus, according to this configuration, the lighting module may include an intermediate lens, in addition to a projection lens. The objective of positioning the intermediate lens is to reduce or even limit geometric aberrations.

[0026] According to one example, the exit diopter 5b has an upper part 12 and a lower part 13, the upper part 12 comprising grooves 8 directed in a vertical direction, the upper part 12 being joined to the lower part 13 at the level of the optical axis 7b.

[0027] Thus, the positioning of these grooves on the upper part of the output diopter of the primary lens allows the light rays that were to converge to be slightly deflected towards a set of various directions (by more or less 5° compared to the original direction). This results in a greater homogeneity (depending on the horizontal direction) of the resulting illumination. This configuration therefore allows the resulting illumination to be slightly blurred, particularly its lateral zones, to obtain a regulatory gradient (so as to increase the comfort of the user who will not be disturbed by a clear limit of the brightness).

[0028] According to one example, the streaks 8 have a sinusoidal profile in planes parallel to the upper row of upper light sources 1.

[0029] The sinusoidal profile of the striations 8 which can be observed makes it possible to obtain an alternation on the exit diopter 5b, in a direction parallel to the upper row of upper light sources, of concave and convex portions (all of these portions being joined), this having the consequence of creating a set of localized convergence zones so as to bring the light rays closer to planes perpendicular to the upper row of upper light sources (these planes being centered on a distinct concave and convex portion). The fact that the striations 8 create an alternation of identical concave and convex portions makes it possible to more precisely control the deviation of the light rays by the striations and therefore the resulting homogeneity according to planes parallel to the upper row of light sources (in comparison in particular with the case where the striations 8 had a non-rounded elongated shape).

[0030] According to one example, the upper portion of the lower output face 4b of the lower light guides 4 is located between 0.5 mm and 1.5 mm above the lower portion 13.

[0031] This configuration allows for a blurred main beam on its lower part, in order to improve the transition between the main beam and the cut-off beam for dipped beam.

[0032] According to one example, the entrance diopter 5a comprises a first surface 9, a second surface 10 and a third surface 11, the first surface 9 being in contact with the upper row of upper light guides 3, the second surface 10 being in contact with the lower row of lower light guides 4, the third surface 11 having a component along the optical axis 7b, the first surface 9 and the second surface 10 being connected by the third surface 11.

[0033] Thus, this configuration makes it possible to obtain a difference in position relative to the object focal plane between the upper exit face 3b of the upper light guides 3 and the lower exit face 4b of the lower light guides 4 while having the possibility of leaving the upper exit face 3b of the upper light guides 3 and the lower exit face 4b of the lower light guides 4 in contact with the entrance diopter 5a.

[0034] According to one example, the lower exit face 4b of the lower light guides 4 is located at the object focal plane 7a.

[0035] Thus, due to this configuration, the image of the light rays coming from the lower row (whose object is at the focal point object F) will be at infinity. This configuration will thus make it possible to obtain a light beam resulting from the lower row of light sources projecting over a long distance. Thus, the second light beam can be a road supplement beam.

[0036] In one example, the first beam is a low beam near field beam and the second beam is a high beam supplemental beam.

[0037] Thus, thanks to this configuration, that is to say due to the fact that the upper output faces are not at the level of the object focal plane, the surface illuminated by the first beam will be homogeneous and will therefore not have dark bands, directed in a horizontal direction, included in the area to be illuminated. Thus, given that the first beam is a low beam near field beam, the lighting module will make it possible to form a homogeneous low beam near field beam. The second beam is preferably a high beam supplementary beam, this because it is typical for the high beam supplementary beam to be projected to infinity. It is necessary that the first beam is a low beam near field beam because it is more sensitive to inhomogeneities and artifacts in comparison to the high beam supplementary beam.

[0038] According to one example, the upper light sources 1 and the lower light sources 2 are selectively switchable individually.

[0039] Thus, the light sources of the lighting module can be selectively switched on or off so as to form the resulting lighting having the desired configuration.

[0040] In the characteristics set out herein, the terms relating to verticality, horizontality or transversality (or lateral direction or position), or their equivalents, are understood in relation to the position in which the lighting system is intended to be mounted in a vehicle. The terms "vertical" and "horizontal" are used in this description to designate directions, following an orientation perpendicular to the plane of the horizon for the term "vertical" (which corresponds to the height of the systems), and following an orientation parallel to the plane of the horizon for the term "horizontal". They are to be considered in the operating conditions of the module in a vehicle. The use of these words does not mean that slight variations around the vertical and horizontal directions are excluded from the invention.For example, an inclination relative to these directions of the order of + or - 10° is here considered as a minor variation around the two preferred directions. Relative to the horizontal plane, the inclination is in principle between -5° and +4° and it is between - 6° and +7.5° laterally.

[0041] In the context of the present description, the adjectives "lower" and "upper" and their equivalents (high, low, under, below, on, above) are to be taken in relation to the vertical direction, that is to say the direction perpendicular to the direction in which the upper light sources are aligned and to the optical axis. In the same context, an upper element is located above (but not necessarily in contact with, or directly in line with) a lower element, in the vertical direction. Thus, in the context of the present invention, the lower part is positioned above the lower part.Similarly, the upper row of upper light sources, the upper row of upper light guides, the upper entrance face, the upper exit face, the upper area are respectively located above the lower row of lower light sources, the lower row of lower light guides, the lower entrance face, the lower exit face and the lower area.

[0042] The term "ridges" means reliefs having an elongated shape and being parallel to each other (or substantially parallel to each other so as to allow an angle of plus or minus 5° between the different ridges). In the context of the present invention, these ridges have a micrometric size, that is to say they create a surface state in the form of a set of projecting elements having a depth of less than 600 µm.

[0043] It is specified that in the context of the present invention, the term "upper portion (or lower portion)" in the expression "upper portion of the lower exit face 4b of the lower light guides 4 (or lower portion of the upper exit face 3b of the upper light guides 3)" means that we consider an area of ​​the lower (or upper) exit faces located most upwards (or downwards) in comparison with an area of ​​the lower (or upper) exit faces located more downwards (or upwards), this area located upwards (or downwards) being able to have a minimal surface so as to create a point contact with the element with which it is in contact.

[0044] According to one embodiment, the lighting module comprises an upper row of upper light sources 1, an upper row of upper light guides 3, a lower row of lower light sources 2, a lower row of lower light guides 4, a primary lens 5 and a secondary optical device 6.

[0045] Light rays from the upper row 1 are configured to form a first beam. The upper light guides 3 each comprise an upper input face 3a and an upper output face 3b. The upper light guides 3 are each distinctly associated with an upper light source 1. Thus, each upper light guide 3 forms a pair with an upper light source 1. Each upper light guide 3 consists of a conduit for transmitting the light from the associated upper light source 1 from the upper input face 3a to the upper output face 3b of the upper light guide 3.

[0046] Light rays from the lower row 2 are configured to form a second beam. The lower light guides 4 each comprise a lower input face 4a and a lower output face 4b. The lower light guides 4 are each distinctly associated with a lower light source 2. Thus, each lower light guide 4 forms a pair with a lower light source 2. Each lower light guide 4 consists of a conduit for transmitting the light from the associated lower light source 2 from the lower input face 4a to the lower output face 4b of the lower light guide 4.

[0047] The primary lens 5 comprises an input diopter 5a and an output diopter 5b. The output diopter 5b is configured so that the light rays from the upper light sources 1 and the lower light sources 2 pass through it. The secondary optical device 6 comprises at least one secondary lens 7. The secondary optical device 6 has a focal length F, an object focal plane 7a and an optical axis 7b. The primary lens 5 and the secondary optical device 6 are configured so that the light rays from the lower rows and the upper rays intercept the primary lens 5 first and the secondary optical device 6 second.

[0048] The upper exit face 3b of the upper light guides 3 is located on the optical axis 7b at a position different from that of the object focal plane 7a. The primary lens 5 comprises an entrance diopter 5a. The entrance diopter 5a is integral with the upper exit face 3b of the upper light guides 3 and the lower exit face 4b of the lower light guides 4.

[0049] Since the first beam and second beam each come from a row of light sources, the first and second beams are pixelated beams.

[0050] The light sources in the rows of light sources can be aligned along a direction d. The direction d can be a horizontal direction.

[0051] The light sources in the top row 1 can be 8 in number. The light sources in the bottom row 2 can be 3 in number. The light sources in the top row 1 can also be 1, 2, 3, 4, 5, 6, 8 or 10 in number. The light sources in the bottom row 2 can be 1, 2, 3, 4, 5, 6, 8 or 10 in number.

[0052] As shown in Figures 2 and 3, the light sources of the upper row may be offset (in a horizontal direction) relative to the light sources of the lower row so that in top view, the light sources of both rows together do not overlap. The light sources of the lower row may be centered relative to those of the upper row.

[0053] The rows of light sources can be spaced between 12 and 16 mm from the exit diopter of the primary lens.

[0054] According to a preferred example, the upper exit face 3b of the upper light guides 3 is located on the optical axis 7b at a position different from that of the lower exit face 4b of the lower light guides 4.

[0055] Preferably, the upper exit face 3b of the upper light guides 3 is distant on the optical axis 7b from the object focal plane 7a by a distance dist. The object focal plane 7a is positioned between the upper exit face 3b of the upper light guides 3 and the exit diopter 5b.

[0056] Advantageously, the distance is greater than or equal to 3 cm.

[0057] Advantageously, the distance dist is less than or equal to 5 cm, and preferably 4 cm.

[0058] According to a preferred embodiment, the distance dist is between 5% and 10% of the focal distance F.

[0059] Preferably, the secondary optical device 6 comprises two secondary lenses 7.

[0060] Preferably, the exit diopter 5b has an upper part 12 and a lower part 13. The upper part 12 comprises grooves 8 directed perpendicular to the direction of alignment of the light sources of the rows. The upper part 12 is joined to the lower part 13 at the optical axis 7b. The grooves 8 can therefore extend in a direction perpendicular to the optical axis 7b and to the direction of alignment of the light sources.

[0061] The width and depth of the streaks can be selected to increase or reduce the deflection of light rays due to the positioning of the streaks.

[0062] According to an advantageous embodiment, the striations 8 have a sinusoidal profile in planes perpendicular to their direction of elongation.

[0063] Advantageously, the upper portion of the lower exit face 4b of the lower light guides 4 is located between 0.5 mm and 1.5 mm above the lower portion 13.

[0064] According to an advantageous example, the input diopter 5a comprises a first surface 9, a second surface 10 and a third surface 11. The first surface 9 serves as a support for the upper row of upper light guides 3. The upper row of upper light guides 3 (and more precisely the upper exit face 3b of the upper light guides 3) is thus attached to the first surface 9. The second surface 10 serves as a support for the lower row of lower light guides 4. The lower row of lower light guides 4 (and more precisely the lower exit face 4b of the lower light guides 4) is attached to the second surface 10. The third surface 11 forms with the optical axis 7b an angle having a value other than 90°. The third surface 11 is positioned between the first surface 9 and the second surface 10. The third surface 11 is integral with the first surface 9 and the second surface 10.

[0065] The first surface 9 may be planar and positioned so as to be perpendicular to the optical axis 7b. The upper light guides 3 may therefore be fixed on a planar surface. The second surface 10 may be convex so that the lower light guides 4 fixed on the second surface 10 describe, as illustrated in figures 3 and 4, an arc of a circle or a curve in a horizontal plane. The third surface 11 may be parallel to a horizontal plane.

[0066] Advantageously, the upper portion of the lower exit face 4b of the lower light guides 4 is located above the optical axis 7b at a distance of between 0.5 mm and 1.5 mm.

[0067] Advantageously, the lower exit face 4b of the lower light guides 4 is located at the level of the object focal plane 7a.

[0068] According to a preferred example, the third surface 11 is integral with the upper portion of the lower exit face 4b of the lower light guides 4 and with the lower portion of the upper exit face 3b of the upper light guides 3.

[0069] The projection lens may be made of polymethylmethacrylate. The intermediate lens may be made of polycarbonate. The primary lens is preferably made of silicone.

[0070] The entrance diopter and the exit diopter of the intermediate lens may have reliefs on their surface, so as to homogenize the resulting light beam. On the entrance diopter of the intermediate lens, there may be elements projecting in the horizontal direction having a toric shape so as to create a slight dispersion of the light rays in the vertical direction. On the exit diopter of the intermediate lens, there may be elements projecting in the vertical direction having a toric shape so as to create a slight dispersion of the light rays in the horizontal direction.

[0071] In the case where the lighting module is composed of a primary lens and two secondary lenses, the input diopter of the light guides may be distant from the output diopter of the projection lens by a distance of between 82 mm and 86 cm. This distance is taken into account at the level of the optical axis 7b.

[0072] The lighting module comprising the primary lens, the intermediate lens and the projection lens can have a focal length of 58 mm. The field of view of the beam from the rows of light sources exiting the projection lens can be 35°.

[0073] The distance between the exit diopter of the primary lens and the entrance diopter of the projection lens can be 77 mm. The distance between the exit diopter of the primary lens and the entrance diopter of the intermediate lens can be 52 mm.

[0074] Advantageously, the primary lens, the intermediate lens and the projection lens have a size of 35 by 50 mm (taking into account the fixing areas).

[0075] Two consecutive light sources in the same row can be at a distance of 3.89 mm. The upper row of sources and the lower row of sources can be separated by a distance between 2.5 mm and 3.5 mm.

[0076] The light sources of the entire device can be light-emitting diodes, also commonly called LEDs.

[0077] Advantageously, the LEDs of the entire lighting module have a square emissive surface. The LEDs of the entire lighting module may have an emissive surface of 0.5 mm 2 or 1 mm 2 . LEDs with an emissive surface of 0.5 mm 2 can have a height and width of 0.76 mm. LEDs with an emissive surface of 1 mm 2can have a height and width of 1 mm. The size and shape of the light guides are selected to obtain a beam with the desired volume. Thus, to have a wide beam, the size of the light guides will be increased and LEDs with an emissive surface of 1 mm will be used. 2 can therefore be positioned to obtain a significant luminous flux. Conversely, to have a narrow beam, the size of the light guides will be reduced and LEDs with an emissive surface of 0.5 mm 2 will be positioned.

[0078] Preferably, the first beam is a low beam near field beam. Preferably, the second beam is a high beam supplementary beam.

[0079] The module can also be used to form other lighting functions (including a low beam cut-off beam, a second high beam supplement and a second low beam near field beam) via or outside those described above, in relation to the adaptive beams. It is thus possible to produce a lighting matrix for selectively illuminating parts of the space in front of the vehicle.

[0080] The near-field beam of a low beam can also be called a "flat" beam. It is projected generally below the cutoff and is used to illuminate the near field in front of the vehicle.

[0081] The low beam cut-off beam allows a cut-off zone to be defined. Thus, the combination of the near-field beams and the low beam cut-off beam allows a low beam beam to be defined at least partially.

[0082] The cut-off beam for dipped beam is therefore configured to produce, in dipped beam mode, a portion of cut-off dipped beam. The resulting angled portion is called the "kink" of the "dipped beam". Dipped beam type beams typically have a first lateral zone (normally on the edge of the roadway) projecting at a height slightly higher than in a second lateral zone (normally on the middle of the roadway), these two zones following each other laterally with the presence of a bend or elbow between them.

[0083] A near-field beam from a dipped headlight is typically a relatively spread projection laterally in front of the vehicle, mostly or completely below the horizon line, generally seeking a good distribution of illumination across the entire illuminated area.

[0084] The invention can participate in a high beam function which has the function of illuminating the scene in front of the vehicle over a wide area, but also over a significant distance, typically around two hundred meters. This light beam, due to its lighting function, is located mainly above the horizon line. It can have a slightly ascending optical axis of illumination for example. In particular, it can be used to generate a lighting function of the "complementary" type which forms a portion of a high beam complementary to that produced by a near-field beam, the high beam complement seeking entirely or at least mainly to illuminate above the horizon line while the near-field beam (which can have the specificities of a dipped beam) seeks to illuminate entirely or at least mainly below the horizon line.The route complement can therefore be a main part of the overall “route” beam and be associated with another beam participating in the code.

[0085] Preferably, the upper light sources 1 and the lower light sources 2 are selectively ignitable individually.

[0086] Thus, thanks to this configuration, the LEDs of the lighting module can be selectively switched on or off in order to form the resulting lighting with the desired configuration. This configuration therefore makes it possible to control the brightness value according to the area considered. The acronym ADB (for Adaptive Driving Beam) is used for this type of function.

[0087] Indeed, selective activation of light sources allows for varied light beam configurations to be obtained, allowing adaptation to various situations. Thus, areas that need to be illuminated are illuminated, and those whose brightness must be reduced due to regulatory constraints will also be.

[0088] This discretization of light is also referred to as a segmented beam. Thus, a segmented beam is a beam whose projection forms an image composed of beam segments, each segment of which can be illuminated independently.

[0089] Thus, not all emissive elements are necessarily simultaneously active, i.e. emitting light. This function allows the shape of the rendered beam to be modulated. In the case where a light source is not activated, its image, as projected by the optical module, will be zero. It then forms a lighting void in the resulting overall beam. This void is understood to include coupling phenomena at the source and the effects of stray light from the optics.

[0090] The system according to the invention may comprise a unit for controlling the activation of each of the sources, configured to produce at least one dark zone forming a tunnel in a projected beam by deactivating a group of adjacent sources, the control unit being configured to determine the number of sources in the group corresponding to the dark zone as a function of the width dimension of the sources.

[0091] The control unit may comprise a computer program product, preferably stored in a non-transitory memory, in which the computer program product comprises instructions which, when executed by a processor, make it possible to determine the sources to be activated, in particular to obtain at least one dark zone (in which the sources are not activated) of a determined surface taking into account the variable surface of the images of the elements.

[0092] The invention is not limited to the embodiments previously described and extends to all embodiments covered by the invention.

[0093] List of references: 1. upper row of upper light sources 2. lower row of lower light sources 3. upper row of upper light guides 3a. upper entrance face 3b. upper exit face 4. lower row of lower light guides 4a. lower entrance face 4b. lower exit face 5. primary lens 5a. entrance diopter 5b. exit diopter 6. secondary optical device 7. secondary lens 7a. object focal plane 7b. optical axis 8. striations 9. first surface 10. second surface 11. third surface 12. upper part 13. lower part F. focal distance dist. distance d. direction

Claims

Lighting module comprising:an upper row of upper light sources (1), light rays from the upper row (1) being configured to produce a first beam,an upper row of upper light guides (3) each comprising an upper input face (3a) and an upper output face (3b), the upper light guides (3) each being distinctly associated with an upper light source (1), each upper light guide (3) conducting light rays from the associated upper light source (1) from the upper input face (3a) to the upper output face (3b) of the upper light guide (3),a lower row of lower light sources (2), light rays from the lower row (2) being configured to produce a second beam,a lower row of lower light guides (4) each comprising a lower input face (4a) and a lower output face (4b), the lower light guides (4) each being distinctly associated with a lower light source (2), each lower light guide (4) conducting light rays from the associated lower light source (2) from the lower input face (4a) to the lower output face (4b) of the lower light guide (4),a primary lens (5) comprising an input diopter (5a) and an output diopter (5b), the output diopter (5b) being configured to receive the light rays from the upper light sources (1) and the lower light sources (2),a secondary optical device (6) comprising at least one secondary lens (7) and having a focal length (F), an object focal plane (7a) and an optical axis (7b),the secondary optical device (6) being positioned along the optical axis (7b) after the primary lens (5) characterized in that the upper exit face (3b) of the upper light guides (3) is offset along the optical axis (7b) relative to the object focal plane (7a) and in that the primary lens (5) comprises an entrance diopter (5a), the entrance diopter (5a) being in contact with the upper exit face (3b) of the upper light guides (3) and the lower exit face (4b) of the lower light guides (4)., Lighting module according to the preceding claim in which the upper exit face (3b) of the upper light guides (3) is offset along the optical axis (7b) relative to the lower exit face (4b) of the lower light guides (4). Lighting module according to any one of the preceding claims in which the upper exit face (3b) of the upper light guides (3) is offset along the optical axis (7b) relative to the object focal plane (7a) by a distance (dist) so as to move away from the exit diopter (5b). Lighting module according to the preceding claim in which the distance (dist) is greater than or equal to 3 cm. Lighting module according to either of the two preceding claims in which the distance (dist) is less than or equal to 5 cm, and preferably 4 cm. Lighting module according to any one of the three preceding claims wherein the distance (dist) is between 5% and 10% of the focal length (F). Lighting module according to any one of the preceding claims wherein the secondary optical device (6) comprises two secondary lenses (7). Lighting module according to any one of the preceding claims in which the output diopter (5b) has an upper part (12) and a lower part (13), the upper part (12) comprising grooves (8) directed in a vertical direction, the upper part (12) being joined to the lower part (13) at the optical axis (7b). Lighting module according to the preceding claim in which the grooves (8) have a sinusoidal profile in planes parallel to the upper row of upper light sources (1). Lighting module according to the preceding claim, wherein the upper portion of the lower exit face (4b) of the lower light guides (4) is located between 0.5 mm and 1.5 mm above the lower portion (13). Lighting module according to any one of the preceding claims in which the input diopter (5a) comprises a first surface (9), a second surface (10) and a third surface (11), the first surface (9) being in contact with the upper row of upper light guides (3), the second surface (10) being in contact with the lower row of lower light guides (4), the third surface (11) having a component along the optical axis (7b), the first surface (9) and the second surface (10) being connected by the third surface (11). Lighting module according to any one of the preceding claims wherein the lower exit face (4b) of the lower light guides (4) is located at the object focal plane (7a). A lighting module according to any preceding claim wherein the first beam is a low beam near field beam and the second beam is a high beam supplemental beam.

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