Optical module for a motor vehicle lighting device

Abstract

The invention relates to an optical module (10, 100) for a motor vehicle lighting device (1), the device comprising first and second light sources (21, 22, 2n) mounted on a support (2) extending in a given direction (X); a reflector (3) extending on one side of the support and comprising at least two portions (31, 32, 3n) including a first, proximal portion (31) and a second, adjacent portion (32); characterised in that it comprises at least one optical shaping element (4, 42) associated with the second light source so as to form a virtual image of the source on the other side of the support; the second portion of the reflector comprising an object focal point (F2) positioned at the virtual image in order to reflect the light rays emitted by the second source in a direction parallel to an emission direction (X) of the module.

Description

Optical module of a lighting device of a motor vehicle.

[0001] The invention relates to the field of automotive lighting and light signaling. More specifically, the invention relates to an optical module making it possible to obtain a lit appearance on a very spread out and homogeneous surface.

[0002] In the automotive field, it is known to use a light device, intended to perform one or more regulatory photometric functions, to also perform a light signature function allowing road users to recognize the type of vehicle or its manufacturer. This light signature function is performed through the illuminated surface of the light device, which forms one or more given patterns.

[0003] In this context, the style requirements imposed by manufacturers may require lighting devices with an illuminated surface extending over significant dimensions, up to 50 cm² or more. In addition, this surface must have significant illumination, in order to satisfy the requirements of the photometric functions that the device must perform, a globally uniform illuminated appearance regardless of the direction of observation of the lighting device. Finally, the lighting device must be efficient so as to avoid using too many light sources to meet the needs mentioned, in particular in order to reduce its cost, reduce its electricity consumption and simplify its design.

[0004] It is known to use an optical module employing a light guide to produce a light device having an illuminated surface spread over large dimensions, but this type of device has drawbacks. Indeed, the ends of the light guide, or the junctions of the light guide with other optical elements allowing, for example, the coupling of the light emitted by a light source to the guide, can be the source of local light leaks, which introduce one or more bright spots (also called "hot spots") into the illuminated appearance of the light device. The illuminated appearance is therefore not sufficiently homogeneous to allow the production of a suitable light signature. It is possible to hide these spots by using masks, but these increase the cost of the device, the complexity of its design and its size.Furthermore, devices incorporating light guides are optically inefficient and have high power consumption.

[0005] It is also known to decompose the illuminated surface of the device into several parts, each being illuminated by means of an optical module comprising a dedicated reflector. While this solution ensures the homogeneity of each part, the overall illuminated appearance of the device presents dark lines, due to the junctions of the reflectors which are not illuminated. The illuminated appearance of the device is therefore also not sufficiently homogeneous. In addition, each reflector must have its own light source, which multiplies the number of electronic boards supporting the light sources and therefore increases the cost and complexity of the device.

[0006] Thus, there is also a need for an optical module whose design allows for obtaining an illuminated surface with significant dimensions, whose illumination is significant and homogeneous and which is efficient, simple and inexpensive.

[0007] The present invention is placed in this context and aims to meet this need.

[0008] For these purposes, the invention relates to an optical module for a light device of a motor vehicle, comprising: at least one first and one second light source mounted on the same support extending in a given direction; a reflector extending on one side of the support and comprising at least two portions extending from a proximal end to a distal end of the reflector, including a first portion, called proximal, located on the side of the proximal end and a second portion, adjacent to the proximal portion in the given direction; each of the first and second portions being capable of receiving and reflecting light rays emitted respectively by the first and second light sources.

[0009] The module is characterized in that it comprises at least one optical shaping element associated with the second light source and arranged to form a virtual image of the second light source located on the other side of the support; and in that the second portion of the reflector comprises an object focal point positioned substantially at the level of said virtual image and being arranged to reflect the light rays emitted by said second light source in a direction substantially parallel to an overall emission direction of the optical module.

[0010] The invention thus proposes to use two or more light sources for the same reflective cavity. The cavity thus forms a single reflector, composed of a series of adjoining portions, each dedicated to a light source, which makes it possible to avoid creating dark lines in the illuminated appearance of the optical module while increasing the size of this illuminated surface.

[0011] However, the distance separating the proximal portion of the reflector from the first light source is substantially less than the distance separating the second portion from the second light source. This increase in distance makes the second portion, and any subsequent portions, less efficient than the proximal portion, and therefore harms the uniformity and intensity of the illumination of the overall surface of the reflector. In order to compensate for this loss of efficiency, an optical shaping element is added downstream of the second light source. The design of this optical element thus makes it possible to deflect light rays emitted by said second light source so that these light rays appear to come from a virtual source located on the other side of the support, opposite to that in which the reflector extends.The second portion is then arranged to be focused on this virtual source rather than on the second light source, and therefore has, in other words, a focal length different from that of the first portion. The cavity is then said to have an evolving focal length. In other words, the optical shaping element makes it possible to shape the beam of light rays emitted by the second light source by reducing its aperture, these light rays then being collimated by the second portion of the reflector.

[0012] This combination of characteristics thus makes it possible to increase the size of the reflector surface, while maintaining a substantially constant luminance along the reflector and therefore to increase the homogeneity of the illumination of the reflector surface. The reflector therefore forms a large surface illuminated by the two light sources, homogeneously and with significant illumination. Furthermore, the use of a reflector, compared to a light guide, is more optically efficient, and makes it possible to minimize the number of light sources in the optical module with respect to the size of the illuminated surface, and to reduce the design complexity and the power consumption of the optical module.

[0013] In the context of the present invention, "proximal end of the reflector" means a point, edge or edge of the reflector located closest to the support of the light sources, and "distal end of the reflector" means a point, edge or edge of the reflector located opposite the proximal end in the given direction.

[0014] In the context of the present invention, the term "portion of the reflector" means a portion of the reflector receiving substantially the majority of the light rays emitted by the light source with which it is associated and arranged to reflect these rays to form a part of a light beam, composed of all the light rays emitted by the light sources of the optical module and reflected by the portions of the reflector. By way of non-limiting example, the reflector may be defined longitudinally by the proximal end and by the distal end and laterally by two lateral edges, each extending from the proximal end to the distal end. Where appropriate, each portion may extend over the entire width of the reflector, from one of the lateral edges to the other. Provision may be made for all the portions to form a continuous surface or, on the contrary, for two adjacent portions to be separated by an edge of the reflector.It will also be possible to provide that the entire surface of a portion is continuous or, on the contrary, that the surface of a portion is faceted or structured with optical patterns or deformations.

[0015] In the context of the present invention, the term "overall direction of emission of the optical module" means an optical axis of the optical module along which a light beam, composed of all the light rays emitted by the light sources of the optical module and reflected by the portions of the reflector, is emitted. The light rays emitted by each of the light sources of the optical module are thus reflected in a direction substantially parallel to this optical axis, it being understood that the terms "substantially parallel" encompass slight variations in the directions of reflection with respect to this optical axis, in particular for the purposes of diffusion of the light by one and / or other of the portions of the reflector.

[0016] Advantageously, the first and second light sources are intended to participate in the same photometric function. In particular, it may be provided that the optical module comprises a control unit arranged to control the first and second light sources so that they are activated simultaneously, the light rays emitted by these first and second light sources forming together, after reflection on the reflector, a light beam emitted in said overall direction of emission and participating in the realization, totally or partially, of a predetermined regulatory photometric function.

[0017] In an exemplary embodiment of the invention, the proximal portion of the reflector comprises an object focal point positioned substantially at the level of the first light source. Where appropriate, said proximal portion is arranged to reflect the light rays emitted by said first light source in a direction substantially parallel to an overall emission direction of the optical module. In other words, in this example, the optical module is devoid of an optical shaping element associated with the first light source, which is not necessary given the short focal length of the proximal portion and the efficiency of this portion. This characteristic makes it possible to reduce the cost and size of the optical module.

[0018] Advantageously, the proximal portion may have a generally paraboloid surface.

[0019] In another exemplary embodiment of the invention, the optical module comprises an optical shaping element associated with the first light source and arranged to form a virtual image of the first light source located on the other side of the support. Where appropriate, the proximal portion of the reflector comprises an object focal point positioned substantially at the level of said virtual image of the first light source and the proximal portion is arranged to reflect the light rays emitted by said first light source in a direction substantially parallel to said overall emission direction of the optical module.

[0020] In one embodiment of the invention, the optical module comprises a plurality of light sources mounted on said support while being aligned in said given direction; said plurality of light sources comprising the first light source as well as a series of light sources starting with the second light source. Where appropriate, the reflector comprises a plurality of portions adjacent two by two from the proximal end to the distal end of the reflector; each of the portions being capable of receiving and reflecting light rays emitted by one of the light sources associated with it.The optical module comprises at least one optical shaping element associated with each light source of said series and arranged to form a virtual image of said associated light source, located on the other side of the support; and the portion of the reflector associated with a light source of said series comprises an object focal point positioned substantially at the level of said virtual image of said light source formed by the optical shaping element associated with this light source and said portion is arranged to reflect the light rays emitted by said light source in said direction substantially parallel to the overall emission direction of the optical module.

[0021] In this example, the plurality of portions is thus formed by the first proximal portion, and by a series of portions starting with the second portion, each portion of the series being adjacent to the next portion in the given direction, up to a so-called distal portion, located on the side of the distal end of the reflector. All these portions of the reflector then reflect the light rays that they receive parallel to the same direction. It is thus possible to produce a reflective cavity with a focal length that evolves along the given direction, combined with a plurality of light sources, which makes it possible to obtain an optical module having a particularly large illuminated surface while remaining homogeneous.

[0022] It may be provided that the first portion is focused on the first light source or that the optical module comprises an optical shaping element associated with this first light source.

[0023] Advantageously, each optical shaping element is arranged to form a virtual image of the light source associated with it located at a given distance from this light source, said distance increasing with the distance of said light source from the first light source in the given direction.

[0024] In this example, the portions of the reflector are separated from the support of the light sources by a distance that increases with the distance of the portions from the proximal end of the reflector in said given direction. Therefore, the further a light source is from the first light source, the more the aperture of the light beam that it emits is reduced using the optical shaping element associated with this light source. The light beams emitted by the light sources of the series thus see their aperture decrease as one moves away from the first light source. The dimensions of the portions therefore also reduce as one moves away from the proximal end, so as to further improve the homogeneity of the illuminated surface and the efficiency of the optical module.

[0025] In one embodiment of the invention, each optical shaping element comprises a Fresnel lens. This type of optical element makes it possible to form a virtual image of a light source with a thin optical system, which makes it possible to prevent an optical element from collecting light rays emitted by a light source close to that with which it is associated.

[0026] Alternatively, each optical shaping element may comprise one or more or a combination of the following optical elements: collimator, lens, reflector.

[0027] In one embodiment of the invention, the reflector has a shape following a predetermined base surface and each portion of the reflector is formed by a local modification of said predetermined base surface.

[0028] For example, the reflector may have a shape following a predetermined carrier surface, in particular a paraboloid, and each portion of the reflector may result from a local modification of said carrier surface, such as a facetization of this carrier surface, each facet being oriented so as to reflect an elementary light beam coming from the virtual image formed by the associated optical element and reaching this facet in a direction parallel to the overall direction of emission. Alternatively or cumulatively, the orientation and / or the shape of the portion may be modified to define an object focus positioned at the level of said virtual image.

[0029] In one embodiment of the invention, at least one of the portions of the reflector is provided with diffusing optical structures. Said diffusing optical structures make it possible to introduce slight variations in the direction of reflection of the light rays around said overall direction of emission, in order to spread and / or broaden the light beam generated by the optical module and / or to further improve the homogeneity of the illuminated surface of the light module. Said diffusing optical structures may, for example, be convex facets formed on the concave surface of said portion.

[0030] In one embodiment of the invention, at least one of the light sources comprises a first light emitter of a first color for performing a first photometric function and a second light emitter of a second color for performing a second photometric function.

[0031] For example, each light source may comprise a first semiconductor chip emitting amber-coloured light, the first photometric function being a regulatory direction indicator-type function, and a second semiconductor chip emitting white-coloured light, the second light function being a regulatory daytime running light-type function. A regulatory daytime running light is understood to mean, for example, a daytime running light-type light function complying with the regulatory requirements of a given country or region, and for example, European regulation ECE 87. A regulatory direction indicator is understood to mean, for example, a direction indicator-type light function complying with the regulatory requirements of a given country or region, and for example, European regulation ECE R48.

[0032] Where appropriate, the optical module may comprise a control unit arranged to selectively control the emission of light by the first emitter and by the second emitter, in particular to control the electrical power supplied to one or other of the first and second emitters so that this emitter emits light of reduced luminous intensity to participate in the realization of a third predetermined luminous function, for example a regulatory position light.

[0033] Alternatively, each light source may comprise a first semiconductor chip emitting red light, the first photometric function being a rear position light type function and a second semiconductor chip emitting white light, the second light function being a reversing light type function.

[0034] Preferably, the support may be the same support for each of the light sources or be formed by separate substrates each dedicated to one of the light sources.

[0035] Advantageously, the support can include a printed circuit board, or PCB (from the English “Printed Circuit Board”).

[0036] The invention also relates to a lighting device for a motor vehicle, in particular a lighting and / or signaling device for a motor vehicle, characterized in that it comprises a plurality of optical modules according to the invention, the reflectors of said optical modules being arranged adjacent two by two in a direction other than said given direction and in that the supports of said optical modules extend in the same plane.

[0037] In the invention, the reflectors of said optical modules can together define a single optical part.

[0038] The present invention is now described using examples which are purely illustrative and in no way limitative of the scope of the invention, and from the appended drawings, drawings in which the various figures represent:

[0039] represents, schematically and partially, a front view of a lighting device according to one embodiment of the invention;

[0040] represents, schematically and partially, a perspective view of an optical module of the light device of the;

[0041] represents, schematically and partially, a side view of an optical module according to another embodiment of the invention.

[0042] In the following description, elements which are identical, by structure or by function, appearing in different figures retain, unless otherwise specified, the same references.

[0043] A front view of a part of a lighting and signaling device 1 of a motor vehicle according to an embodiment of the invention has been described. In order to describe the orientation of the different elements of the device 1, an X, Y and Z reference frame is shown in this view. The X axis is an optical axis of the device 1, defining an overall direction of emission of the different light beams that the device 1 is intended to emit. The Y axis is a vertical axis orthogonal to the X axis and the Z axis is an axis orthogonal to the X and Y axes.

[0044] The device 1 comprises a plurality of optical modules 10, in this case six, arranged in a staggered manner along the vertical axis Y. It may be conceived that the optical modules 10 extend one above the other along an axis inclined relative to the vertical axis Y, around the X axis and / or the Y axis. It may also be conceived that the optical modules 10 are arranged according to another arrangement, in particular by being aligned along the X axis, without departing from the scope of the present invention.

[0045] The optical modules 10 have structures and functions similar to each other, so that only one of these optical modules will be described, in connection with the.

[0046] It may be conceived that the optical modules 10 differ in their dimensions, in particular along the Y and Z axes, or that the device 1 comprises other optical modules, structurally different from the optical modules 10 and / or intended for the realization of other light functions.

[0047] It represents a perspective view of one of the optical modules 10.

[0048] This module 10 comprises a first light source 21 and a second light source 22. These sources are mounted on the same support 2, namely a printed circuit board, being aligned along the X axis.

[0049] In the example described, each light source 21 and 22 comprises a first semiconductor chip emitting amber-colored light for performing a regulatory photometric function of the direction indicator type, and a second semiconductor chip emitting white-colored light for performing a regulatory photometric function of the daytime running light type. Each light source 21 and 22 is thus a dual-chip light-emitting diode, all of the sources 21 and 22 of the modules 10 of the device 1 being controllable by a single control unit (not shown) capable of selectively activating the amber chips or the white chips of these sources for the emission of one or other of the direction indicator and daytime running light functions.

[0050] The light sources 21 and 22 are thus intended to participate together in the same photometric function, the control unit thus controlling these light sources 21 and 22 so that they are activated simultaneously and together form a light beam emitted along the X axis and participating in the realization of this photometric function.

[0051] It is possible to envisage that the light sources are dedicated to a single function or to functions other than those described above, and in particular signalling functions such as position lights, reversing lights, brake lights and / or road lighting functions, such as main beam lighting or dipped beam lighting.

[0052] The optical module 10 comprises a reflector 3 extending on one side of the support 2. The reflecting surface of the reflector 3 defines a cavity extending from a proximal edge 3a, closest to the support 2, to a distal edge 3b, located opposite the proximal end along the X axis and therefore furthest from the support 2.

[0053] The reflector comprises two adjacent portions along the X axis, including a first portion 31 extending over the entire width of the reflector 3 along the Y axis, namely from one of the lateral edges of the reflector 3 to the other lateral edge and extending along the Z axis from the proximal edge 3a to a second portion 32. This second portion 32 also extends along the Y axis over the entire width of the reflector and along the Z axis to the distal edge 3b.

[0054] The first portion 31, called proximal, is associated with the first light source 21, and the second portion 32 is associated with the second light source 22. Each portion 31 and 32 thus receives substantially the majority of the light rays emitted by the light source 21, respectively 22, with which it is associated and reflects these rays to form a part of the light beam participating in the realization of the photometric function.

[0055] The first portion 31 has a paraboloid shape and thus comprises an object focal point F1 positioned substantially at the level of the first light source 21. Consequently, the light rays R1 emitted by the first light source 21, represented in solid lines on the, are reflected by the first portion 31 towards the outside of the device 1 while being substantially parallel to the axis X.

[0056] The optical module 10 further comprises an optical shaping element 4, arranged downstream of the second light source 22 with which it is associated. This element 4 is, in the example described, a Fresnel lens arranged to form a virtual image of the second light source at a point P located on the other side of the support 2, opposite that in which the reflector 3 extends.

[0057] In other words, light rays R2 emitted by the second light source 22, shown in dotted lines on the, are deflected by the element 4 so that these light rays R2 appear to come from a virtual source placed at the point P.

[0058] It will be noted that the optical element 4 is not very thick, which prevents it from collecting light rays emitted by the first light source 21. It will be possible to envisage that the optical element 4 comprises, alternatively or cumulatively, one or more or a combination of the following optical elements: collimator, lens, reflector.

[0059] The second portion 32 is designed to comprise an object focal point F2 positioned substantially at the level of this point P and to reflect these light rays R2 towards the outside of the device 1 while being substantially parallel to the axis X. It is thus understood that the reflector 3 is a cavity with an evolving focal length, the focal length of the portion 32 is substantially greater than that of the proximal portion 31.

[0060] In the example described, the entire reflector 3 has an overall paraboloid shape, the portions 31 and 32 being formed by a plurality of facets each oriented to reflect an elementary light beam coming from the light sources 21 and 22, after deflection by the optical element 4, and reaching this facet in a direction parallel to the X axis.

[0061] The optical shaping element 4 makes it possible to reduce the aperture of all the light rays R2 emitted by the second light source 21, which are then collimated by the second portion 32. Despite the fact that the distance separating the proximal portion 31 from the first light source 21 is substantially less than the distance separating the second portion 32 from the second light source 22, the optical element 4 thus makes it possible to obtain illumination of the second portion 32 that is substantially homogeneous with the illumination of the first portion 31.

[0062] In an exemplary embodiment of the invention not shown, it will be possible to provide an optical shaping element similar to the element 4 arranged downstream of the first light source 21 and making it possible to form a virtual image of the first light source 21 located on the other side of the support, the proximal portion 31 being in this case focused on this virtual image rather than on the first light source 21 itself. The operation of the first and second portions 31 and 32 is then substantially similar.

[0063] Referring again to the, all the reflectors 3 of the optical modules 10 together define a single optical part. Furthermore, the supports 2 of the light sources 21 and 22 of the modules 10 may be coplanar, and thus be formed by a single printed circuit board.

[0064] It is thus understood that, when all the light sources 21 and 22 of the optical modules 10 are activated simultaneously, the surface of the device 1 formed by the reflectors 3 thus appears illuminated in a homogeneous manner, with significant illumination. Given the juxtaposition of the portions 31 and 32 and, more generally, of the reflectors 3, the illuminated surface can have particularly large dimensions, of more than 50 cm². It will also be noted that the reflectors 3 are more optically efficient than light guides, and thus that a reduced number of light sources 21 and 22 is used to illuminate this surface, which reduces the design complexity, the cost and the electrical consumption of the device 1.

[0065] A side view of an optical module 100 according to another embodiment of the invention is shown, transposing the characteristics of the optical module 10 to more than two light sources.

[0066] In the example of 1a, the optical module 100 comprises a plurality of light sources 21 to 2n, mounted on the same support 2 while being aligned along the X axis. Said plurality of light sources thus comprises a first light source 21, on the side of the proximal edge 3a of the reflector 3, followed by a series of light sources starting with a second light source 22 up to a last light source 2n, on the side of the distal edge 3b of the reflector 3.

[0067] Similarly, the reflector 3 comprises a plurality of portions 31 to 3n, adjacent two by two from the proximal edge 3a to the distal edge 3b of the reflector 3. Said plurality of portions thus comprises a first proximal portion 31, extending from the proximal edge 3a, followed by a series of portions starting with a second portion 32 up to a last portion 3n, extending to the distal edge 3b.

[0068] Each of the portions 31 to 3n can receive and reflect light rays R1 to Rn emitted by one of the light sources 21 to 2n associated with it. It will be noted that the portions 31 to 3n are separated from the support 2 by a distance that increases with the distance of the portions from the proximal edge 3a of the reflector along the X axis.

[0069] The optical module 100 comprises an optical shaping element 42 to 4n associated with each light source 22 to 2n, this optical element forming a virtual image of said light source at a point P2 to Pn, located on the other side of the support 2. In the example described, without this being limiting, each optical shaping element 42 to 4n comprises a Fresnel lens.

[0070] It will be noted that each optical shaping element 42 to 4n is arranged to form a virtual image of the light source 22 to 2n at a point P2 to Pn located at a given distance from said light source, said distance increasing with the distance of said light source 22 to 2n from the first light source 21 along the X axis. The light beams R2 to Rn emitted by the light sources 22 to 2n of the series thus see their aperture decrease as one moves away from the first light source 21.

[0071] Each portion 32 to 3n of the series thus comprises an object focal point F2 to Fn positioned substantially at the level of the point P2 to Pn, so that this portion reflects the light rays R2 to Rn, emitted by the light source 22 to 2n associated with it, in a manner substantially parallel to the X axis.

[0072] It may be provided that the first portion 31 of the reflector 3 is focused on the first light source 21 or that the optical module 100 comprises an optical shaping element, similar to the elements 42 to 4n, associated with this first light source 21.

[0073] In other words, all the portions 31 to 3n of the reflector 3 then reflect the light rays that they receive parallel to the X axis. The dimensions of the portions 32 to 3n are reduced as one moves away from the proximal edge 3a, so as to improve the homogeneity of the illuminated surface and the efficiency of the optical module 100. The reflector 3 is thus a reflective cavity with a focal length that evolves along the X axis, which makes it possible to obtain an optical module 100 having a particularly large illuminated surface while remaining homogeneous.

[0074] In the embodiment described, the reflector 3 has an overall paraboloid shape, and each portion 31 to 3n of the reflector results from a local modification of said paraboloid, in a manner similar to the embodiment of set. It will also be noted that the portions 31 to 3n of the reflector 3 are each provided with diffusing optical structures, such as convex facets, making it possible to introduce slight variations in the direction of reflection of the light rays R1 to Rn around the X axis, in order to further improve the homogeneity of the illuminated surface of the light module 100.

[0075] The preceding description clearly explains how the invention makes it possible to achieve the objectives it has set itself, namely to obtain an optical module whose design makes it possible to obtain an illuminated surface having significant dimensions, whose illumination is significant and homogeneous and which is effective, simple and inexpensive. It is thus understood that these objectives are notably achieved by arranging two or more light sources, in the same reflective cavity with evolving focal length, composed of a series of adjoining portions, each dedicated to a light source, which makes it possible to obtain a homogeneous illuminated surface while increasing the size of this illuminated surface.

[0076] In any event, the invention cannot be limited to the embodiments specifically described in this document, and extends in particular to all equivalent means and to any technically effective combination of these means.

Claims

Optical module (10, 100) for a light device (1) of a motor vehicle, comprising:at least a first and a second light source (21, 22, 2n) mounted on a support (2) extending in a given direction (X);a reflector (3) extending on one side of the support and comprising at least two portions (31, 32, 3n) extending from a proximal end (3a) to a distal end (3b) of the reflector, including a first portion (31), called proximal, located on the side of the proximal end and a second portion (32), adjacent to the proximal portion in the given direction; each of the first and second portions being capable of receiving and reflecting light rays (R1, R2) emitted respectively by the first and second light sources;characterized in that it comprises at least one optical shaping element (4, 42) associated with the second light source and arranged to form a virtual image of the second light source located on the other side of the support; and in that the second portion of the reflector comprises an object focal point (F2) positioned substantially at the level of said virtual image and being arranged to reflect the light rays emitted by said second light source in a direction substantially parallel to an overall emission direction (X) of the optical module.; Optical module (10, 100) according to the preceding claim, wherein the proximal portion (31) of the reflector (3) comprises an object focal point (F1) positioned substantially at the level of the first light source (21) and being arranged to reflect the light rays (R1) emitted by said first light source in a direction substantially parallel to an overall emission direction (X) of the optical module. Optical module (10, 100) according to claim 1, characterized in that it comprises an optical shaping element associated with the first light source (21) and arranged to form a virtual image of the first light source located on the other side of the support (3); and in that the proximal portion (31) of the reflector (3) comprises an object focal point (F1) positioned substantially at the level of said virtual image of the first light source and being arranged to reflect the light rays (R1) emitted by said first light source in a direction substantially parallel to said overall emission direction (X) of the optical module. Optical module (100) according to one of the preceding claims, characterized in that it comprises a plurality of light sources (21, 22, 2n) mounted on said support (2) while being aligned in said given direction (X); said plurality of light sources comprising the first light source (21) as well as a series of light sources starting with the second light source (22), in that the reflector (3) comprises a plurality of portions (31, 32, 3n) adjacent two by two from the proximal end (3a) to the distal end (3b) of the reflector; each of the portions being capable of receiving and reflecting light rays (R1, R2, Rn) emitted by one of the light sources associated with it; and in that it comprises at least one optical shaping element (42, 4n) associated with each light source of said series and arranged to form a virtual image of said associated light source, located on the other side of the support;and in that the portion of the reflector associated with a light source of said series comprises an object focal point (F2, Fn) positioned substantially at the level of said virtual image of said light source formed by the optical shaping element associated with this light source and being arranged to reflect the light rays emitted by said light source in said direction substantially parallel to the overall emission direction (X) of the optical module.; Optical module (100) according to the preceding claim, characterized in that each optical shaping element (42, 4n) is arranged to form a virtual image of the light source (22, 2n) associated with it located at a given distance from this light source, said distance increasing with the distance of said light source from the first light source (21) in the given direction (X). Optical module (10, 100) according to one of the preceding claims, characterized in that each optical shaping element (42, 4n) comprises a Fresnel lens. Optical module (10, 100) according to one of the preceding claims, characterized in that the reflector (3) has a shape following a predetermined base surface and in that each portion (31, 32, 3n) of the reflector is formed by a local modification of said predetermined base surface. Optical module (10, 100) according to one of the preceding claims, characterized in that at least one of the portions (31, 32, 3n) of the reflector (3) is provided with diffusing optical structures. Optical module (10, 100) according to one of the preceding claims, characterized in that at least one of the light sources (21, 22, 2n) comprises a first light emitter of a first color for performing a first photometric function and a second light emitter of a second color for performing a second photometric function. Lighting device (1) of a motor vehicle, characterized in that it comprises a plurality of optical modules (10, 100) according to one of the preceding claims, the reflectors (3) of said optical modules being arranged adjacent two by two in a direction (Y) other than said given direction (X) and in that the supports (2) of said optical modules extend in the same plane.

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