Lighting module

Abstract

The invention relates to a module producing a beam that participates in the formation of a dipped beam, the module comprising a light source and a one-piece optical part (1) having: - an entrance diopter (3) for receiving light rays from the light source; - a collimation member (4) for producing a reflection of light rays received by the entrance diopter (3); - a bending element (5) comprising a ridge line that has two cut-off lines (51, 52) which meet at a point of inflection (53); and - an exit diopter (6), characterized in that the collimation member (4) comprises a first segment for reflecting a first portion of the light rays toward a first region of the ridge line which does not comprise the point of inflection (53), and a second segment for reflecting a second portion of the light rays toward a second region of the ridge line which does comprise the point of inflection (53).

Description

Light module

[0001] The present invention relates to the field of lighting and / or signaling and the components, particularly optical components, which participate therein. It finds a particularly advantageous application in the field of motor vehicles. In particular, it relates to a light module as well as to a light device incorporating a plurality of such modules. One destination is the formation of a beam of the dipped beam type suitable for equipping the front of a motor vehicle. STATE OF THE ART

[0002] In the automotive sector, devices are known which are capable of emitting light beams, performing or participating in performing lighting and / or signaling functions.

[0003] These devices must comply with current regulations by emitting light in the desired locations while limiting the brightness in certain areas.

[0004] Thus, we know lighting modules or projectors, among which we traditionally find dipped beam headlights, or codes, with a range on the road of around 70 meters, which are used mainly at night and whose light beam distribution is such that it does not dazzle the driver of an oncoming vehicle. Typically, this beam has a cut-off in the upper part with a horizontal portion, preferably around 0.57 degrees below the horizon, so as not to illuminate the area in which the driver of an oncoming vehicle should be located and an angled portion.

[0005] The precise definition of the angled shape, also called "kink" in English, is already achieved in the state of the art, for example in patent publication FR 3010772 A1. In this document, a dioptric part is used to produce a portion of a dipped beam, and in particular the cut-off part of the dipped beam. From an input surface, the rays undergo internal reflection in the dioptric part and are projected by an output dioptric. But, beforehand, the beam undergoes shaping by means of a bending machine, in practice in the form of a trench whose crest line has a profile representative of the desired cut-off. The light rays which impact the bending machine below the crest line are reflected, so as to avoid forming an upward projection, as would a "high beam".

[0006] We understand the interest of this dioptric part offering a compact and uncomplicated solution for forming a beam portion. However, this portion must be complemented by at least one other beam portion produced by another module. In particular, since the first module produces a cut-off portion, at least one other module must be implemented to produce a wider and relatively horizontally flattened portion (also called "flat" in English) of the final dipped beam. In addition to the multiplication of different modules that this requires, the appearance of the overall lighting device is not homogeneous in the lit state. Indeed, when one deviates from the optical axis, the lit appearance of the module producing the cut-off bend differs from that of the module producing the flattened beam.

[0007] An object of the present invention is therefore to propose a light module and a device making it possible to overcome at least part of the drawbacks cited.

[0008] 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

[0009] To achieve this objective, according to one embodiment, a light module is provided for producing a beam configured to participate in the formation of a dipped beam, comprising a light source capable of emitting light rays, and a single-piece optical part having:- an input diopter intended to receive light rays from the light source,- a collimation member configured to produce a reflection within the optical part of light rays received by the input diopter,- a folder comprising a crest line having two cut-off lines joining at an inflection point, and- an output diopter through which the beam is projected, characterized in that the collimation member comprises a first portion configured to reflect a first part of the light rays towards a first zone of the crest line not comprising the inflection point,and a second portion configured to reflect a second portion of the light rays toward a second area of ​​the ridge line, distinct from the first area and including the inflection point.,

[0010] Thus, the light module is capable of producing several parts of the complete shape of the dipped beam, and in particular both a part giving the elbow shape and a wider part, generally extending towards an area closer to the vehicle.

[0011] Preferably, the entire envelope of the dipped beam is covered by the beam projected by a module. Thus, each module has functional independence. While one might think that a given optical part is only intended to produce a single beam shape, here a module is produced whose optical part comprises several portions, each intended for a beam shape to be projected.

[0012] In particular, the first portion of the collimating member may form a first sub-beam which gives width to the overall projected beam, for example of the flattened or width beam type, in the sense that the light is preferably mainly spread horizontally, which does not exclude the possibility that the upper edge of the beam is not entirely horizontal as detailed below. The second portion may make it possible to form a second sub-beam concentrated at the change in direction of the cut-off, corresponding to the kink zone of the dipped beam. Optionally, other rays from the light source may supplement these two sub-beams; in particular, the second sub-beam may be reinforced by light propagating directly in the optical part from an area of ​​the entrance diopter to the inflection point.

[0013] In an optional embodiment, one and / or the other of the first and second portions are made in several sectors distant from each other. This makes it possible to benefit from a large reflection surface and to spatially diversify the reflection zones participating in the same part of the beam. For example, different sectors are used for the contribution to the first sub-beam and / or different sectors are used for the contribution to the second sub-beam.

[0014] Another aspect concerns a lighting device comprising a plurality of light modules. Although it is not excluded that a single light module produces the entire dipped beam, by combining several modules, it is easy to adjust the overall light output that must be achieved for the "dipped beam" function. By configuring the different modules so that their projections overlap towards the front of the vehicle, they combine their effects to achieve the desired illumination.

[0015] Furthermore, if these different modules are identical, including preferably in light output, the visual rendering they produce when switched on does not differ from one module to another for an observer outside the vehicle. This is aesthetically homogeneous. For example, the modules can be superimposed.

[0016] Another aspect also concerns a vehicle equipped with at least one module and / or at least one lighting device. BRIEF DESCRIPTION OF THE FIGURES

[0017] 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:

[0018] Lrepresents an embodiment of a module in perspective.Lrepresents an example of superposition of modules to form a lighting device.Lrepresents a perspective view of relevant surfaces in a module.Lillustrates a projection of light from a lighting module producing a beam of shape corresponding to a dipped beam.Lillustrates elements of the lighting module participating in forming part of the beam.Lillustrates a projection of light from the lighting module using the elements shown in the previous figure.Lillustrates elements of the lighting module participating in forming part of the beam.Lillustrates a projection of light from the lighting module using the elements shown in the previous figure.Lillustrates elements of the lighting module participating in forming part of the beam.Lillustrates a projection of light from the lighting module using the elements shown in the previous figure.Lrepresents elements of the light module participating in forming part of the beam. Lillustrates a projection of light coming from the light module thanks to the elements presented in the previous figure. Lrepresents another form of certain surfaces of the module, in particular with a curved bender. Lrepresents a perspective view of relevant surfaces in a module according to an alternative embodiment.

[0019] 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

[0020] Before beginning a detailed review of embodiments of the invention, optional features are set out below which may optionally be used in combination or alternatively. the first portion and / or where the second portion comprises a plurality of sectors spaced apart from each other; the plurality of sectors of the first portion comprises two lateral sectors 42 arranged on either side of a central sector 41 of the collimating member 4; the two lateral sectors 42 and the central sector 41 are arranged on a surface of the collimating member 4 located above an optical axis of the optical part 1; the second portion comprises the central sector 41; it is preferably constituted by this central sector 41; the collimating member 4 comprises a complementary sector 43 configured to reflect a third part of the light rays towards the entire ridge line;the input diopter 3 comprises a central portion 31 configured to transmit light rays towards the second zone of the ridge line; along an optical axis direction of the optical part 1, the distance separating the folder 5 and the output diopter 6 is equal to the focal length of the output diopter 6; the inflection point 53 is located on the optical axis of the optical part 1; at least one of the two cut-off lines 51, 52 is curvilinear; the light source is configured to emit the light rays along the optical axis of the optical part 1, the input diopter 3, the collimation member 4 and the output diopter 6 being aligned along the optical axis;the light source is configured to emit the light rays along an axis transverse to the optical axis of the optical part 1, the input diopter 3 and the collimating member 4 being arranged along the transverse axis, and the optical part 1 comprising a reflecting surface 7 arranged between the collimating member 4 and the folder 5, and configured to receive the light rays reflected by the collimating member 4 and reflect them along the optical axis of the optical part 1, towards the folder 5.The invention also relates to a light device comprising a plurality of modules as described previously;Preferably at least some of the modules of the plurality of modules are superimposed; this superposition is advantageously done along the vertical, that is to say preferably a perpendicular to the optical axis and to the horizontal;the superimposed modules advantageously have an offset along an optical axis direction, preferably forming a rectilinear slope.;

[0021] It is specified that in the context of the present invention, the term "elbow or elbow" means that the light projection comprises an upper cut-off having a substantially flat portion and an oblique portion, the two portions forming between them an angle of between 15° and 45°.

[0022] In the characteristics set out below, the terms relating to verticality, horizontality or transversality (or lateral direction), or their equivalents, are understood in relation to the position in which the module is intended to be mounted in a vehicle. The terms "vertical" and "horizontal" are used in the present 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 device 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. Furthermore, the adjectives "lower" and "higher" are to be taken in relation to the vertical direction; in the same context, a higher element will be located above (but not necessarily in contact, nor directly to the right) of a lower element, following the vertical direction.

[0023] The light module proposed here makes it possible to produce a first sub-beam and a second sub-beam corresponding to light projections of different shapes, but which complement each other to produce a projected beam having the spatial configuration of a dipped beam type beam. According to one option, the light module is configured to perform the dipped beam function on its own, and may possibly be associated with other light modules according to the invention in order to increase the light power, it being understood that with the increase in light power, the dipped beam function remains regulatory.

[0024] According to another option, the light module is configured to achieve the light distribution of the dipped beam function, but at a lower power level than that required by the regulations. The light module is then associated with one or more other light modules according to the invention to achieve the light power level necessary for the dipped beam function. Preferably, all the modules are identical.

[0025] The first light sub-beam produced by the module can be a width beam. It is projected globally below the cut-off of the dipped beam and is used to illuminate the near field in front of the vehicle. A near field beam of a dipped beam is typically a relatively spread projection laterally in front of the vehicle, mostly or totally below the horizon line, generally seeking a good distribution of the illumination over the entire illuminated area.

[0026] The second light sub-beam may define a bent zone. Thus, the combination of the first light sub-beam and the second light sub-beam defines at least one dipped beam type beam, possibly, except with regard to the light power supplied.

[0027] Dipped beam type beams typically have a first lateral zone (normally on the edge of the road) projecting at a height slightly higher than in a second lateral zone (normally on the middle of the road), these two zones following each other laterally with the presence of a bend or elbow between them.

[0028] Such a module comprises a light source, preferably a unitary one; it may be a light-emitting diode whose mean emission axis is arranged on the optical axis of the optical part of the module. For example, the power of the source may be 300 lm.

[0029] The collimating member 4 comprises a first portion configured to reflect a first part of the light rays towards a first zone of the ridge line not including the inflection point 53. This first zone is advantageously divided into two elementary zones located on either side of the inflection point 53, without including the latter. Each of these two elementary zones can be carried by a first line 51 and a second line 52 of the ridge line. In a complementary manner, the second portion of the collimating member is configured to reflect a second part of the light rays towards a second zone of the ridge line distinct from the first zone and including the inflection point 53. This distinction means that there are no common points between the first zone and the second zone. According to one possibility, the second zone only includes the physical location of the inflection point.The width of the second zone, extending perpendicular to the optical axis in a horizontal direction, can therefore be very small. However, it can be wider and extend on either side of the inflection point 53 on the first line 51 and the second line 52.

[0030] Ladonne an example of embodiment of the module. The latter mainly comprises an optical part 1 which extends in an optical axis direction from an input diopter 3 to an output diopter 6. The light is received by the input diopter 3 from a light source, preferably arranged on a support 2, for example of the printed circuit board type. On the path of the light admitted into the optical part, a collimation member 4 and a folder 5 successively intercept the light rays coming from the source.

[0031] In this embodiment, the light source emits light rays along the optical axis of the optical part 1, and the input diopter 3, the collimation member 4 and the output diopter 6 are aligned along the optical axis.

[0032] Preferably, the light rays from the source are not processed otherwise than by the optical part 1; the beam is therefore advantageously produced entirely by this single element. The optical part 1 is a single piece and preferably comes from a single material. It may be polymethyl methacrylate (PMMA) or polycarbonate. For example, its shape may be the result of a molding process.

[0033] Lareflects the possibility of associating a plurality of light modules 1. Thus, in the vertical direction, modules follow one another in this example with parallel and advantageously coplanar optical axes. Furthermore, this figure presents an additional option in which the modules 1 are offset in the direction of the optical axis so as to organize them according to a slope. Optionally, the sources of the different modules can be carried by the same support 2. The inclination of the latter in lareflects the slope defined by the superposition of modules 1. This slope is formed at an angle greater than 5° and / or less than 15° relative to a vertical line. In this example, the modules are all the more set back relative to the front face of the vehicle the higher they are located.

[0034] This is a schematic representation of surfaces relevant to the treatment of light, within the optical part 1. It is recalled that this part is a single piece, so that the schematic distinction of the surfaces illustrated in must be understood as a partial representation of certain elements, and in particular of certain surfaces of the external envelope of the part 1.

[0035] There is the input diopter 3, preferably centered on the optical axis of the module, the diopter 3 serves to admit light rays from the source placed upstream (not shown in the figure). In the direction of the output diopter 6, a collimation member 4 allows, for a part of the light rays, to produce a reflection. The latter is advantageously of the total internal reflection type; thus, the surfaces of the collimation member 4 have angles configured to allow this internal reflection, thus preferably avoiding the installation of a reflective surface on the collimation member 4.

[0036] The diagram also shows the folder 5 which is provided with a first line 51 and a second line 52 at its crest, the lines 51, 52 meeting at an inflection point 53. Preferably, the inflection point 53 is located on the optical axis. It is understood that the folder 5 shapes the light so as to produce a cut-off whose line is defined by the first line 51 and the second line 52. As seen previously, to produce a bent shape characteristic of a dipped beam headlight, an angle is present between the first line and the second line, at the inflection point 53.

[0037] Laprovides an example of an isocandela curve representative of a projection produced by the light module thus proposed. We can clearly see the flattened character of the beam on the cut-off line, with a concentration of intensity around the optical axis. Also noticeable at this level is the effect of the cut-off with part of the beam projecting less high on the left than on the right, which is typical of a projection for driving on the right.

[0038] Below are described different parts of the module, each of which can produce different parts of the complete beam shown in the figure.

[0039] Thus, the present means participate in the provision of at least a part of the bent zone of the beam. A central portion 31 of the input diopter 3, typically a circular zone centered on the optical axis, admits light from the source and returns it in a focused manner at the inflection point 53 of the folder 5. The light is therefore concentrated around the inflection point and makes it possible to precisely define the bent zone. A representation of this beam part projected through the output diopter 6 is reflected in the.

[0040] The collimating member 4 also makes it possible to provide a portion of light rays used to define the second sub-beam, that is to say the one defining the bent portion of the dipped beam. It has relevant surfaces for this purpose: a second portion of the input diopter 3, typically a peripheral portion 32 arranged around the aforementioned central portion 31, receives certain light rays from the source. A portion of the rays thus admitted into the optical part 1 reach the central sector 41 of the collimating member 4 where they undergo reflection in the direction of the folder 5, towards the inflection point 53. As seen previously with reference to the, this makes it possible to shape this portion of the beam to obtain the result of the.It is understood that the means presented with reference to and those described with reference to allow their effects to be combined to achieve a desired level of light intensity for this part of the final beam.

[0041] Preferably, the sector 41 is arranged in an upper half-plane of the optical part 1, which means a part of the latter located above the optical axis in a normal position of use of the module, on the side opposite the folder 5. Also, preferably, the sector 41 intercepts a vertical plane passing through the optical axis. Preferably, the sector 41 is symmetrical relative to this plane. For example, the sector 41 may extend over an angular sector greater than 10° and / or less than 30° around the entrance diopter 3. The shape of the surface of the collimating member 4 defining this sector 41 is chosen to produce the collimation in the direction of the inflection point 53. According to one possibility, the profile of the sector 41 along the vertical plane passing through the optical axis may be of the elliptical type with a line of foci around the inflection point 53 or a parabola focus at the level of the inflection point 53.

[0042] The light projected by the light module is supplemented by another, flatter sub-beam, typically allowing the wide, extended shape of a dipped beam to be achieved.

[0043] To this end, it is shown that the collimating member 4 may comprise two sectors 42 arranged around the central sector 41 described above. These sectors 42 receive light from the peripheral portion 32 of the input diopter 3 and are configured to reflect it towards the lines 51, 52 of the folder 5. As previously, an elliptical shape may be assigned to these sectors to produce a reflection towards a line of foci located on the lines 51, 52. Preferably, the sectors 42 are symmetrical around the vertical plane passing through the optical axis. Preferably, they are contiguous with the central sector 41. A first lateral sector 42 addresses the light towards the first line 51 while a second lateral sector 42 addresses the light towards the second line 52; this reflection is carried out without impacting a central zone of the cut-off line, around the inflection point 53, taking into account the configuration of these sectors, located around the central sector 41.

[0044] Laprovides an example of a portion of light projected via the corresponding output diopter 6. Note the complementary nature of the light emitted by this portion of the collimating member 4 and the light emitted by the preceding portion (typically the central sector 41) of this member 4. The light projection visible at la is spread laterally. It has an upper edge which has a horizontal left part which can correspond to the upper edge of the overall beam (low beam) at this level. The right part is not necessarily horizontal and, in this case, it is inclined which means that this part is at least partly covered by the complementary projection forming the bent portion, raising the beam upwards.

[0045] According to one possibility, these two portions are supplemented by light reflected by another sector of the collimating member 4. This is reflected in which a complementary sector 43 of the surface of the collimating member 4 is arranged opposite the sectors 41, 42 relative to a horizontal plane passing through the optical axis. The sector 43 is therefore located in a lower half-plane of the optical part 1. Preferably, the sector 43 covers an angular sector of 180° around the entrance diopter 3. Preferably, the angular sectors covered by the central sector 41, the lateral sectors 42 and the complementary sector 43 scan the entire perimeter of the entrance diopter 3, thus forming a 360° surface around the latter.

[0046] The sector 43 is configured to reflect light rays coming from the peripheral portion 32 of the entrance diopter 3 towards the first and second lines 51, 52 of the folder 5. As previously, an appropriate shape may be used for the sector 43 so as to form a line of foci located at this location for reflection, and in particular a parabolic shape.

[0047] Laprovides an example of light projection corresponding to the participation of sector 43. Given the angular sector that it scans, sector 43 impacts the entire width of the folder 5, so that the resulting beam portion participates both in the bent zone around the inflection point 53, but also in the width of the beam, including in its flattened portion.

[0048] Ladeposes an alternative embodiment of the functional surfaces of the optical part 1. More particularly, this variation concerns the folder 5, the principle of the collimating member 4 with different portions remaining identical to the previous explanations. According to this arrangement, the folder 5 is curved and this curvature compensates for the field curvature aberrations of the output diopter 6. More precisely, from the inflection point 53, the curvature of the folder 5 follows a ridge line profile with the first line 51 and the second line 52 extending in a curvilinear manner with a convexity oriented towards the collimating member 4.

[0049] Generally speaking, it is advantageous for the output diopter 6 to focus on the folder 5. Also, the focal length of the output diopter 6 advantageously corresponds to the distance between the folder 5 and the output diopter 6 taken at the level of the optical axis.

[0050] Illustrates an alternative embodiment of a light module according to the invention. In this figure, only the optical surfaces of the module are shown. This exemplary embodiment differs from that illustrated in Figures 1 and 8 only in that the light source emits light rays along an axis transverse to the optical axis of the optical part, and in that the optical part 1 comprises a reflective surface 7 arranged between the collimating member 4 and the folder 5.

[0051] The input diopter 3 and the collimating member 4 are arranged along this transverse axis. The reflecting surface 7 receives the light rays reflected by the collimating member 4, and reflects them along the optical axis of the optical part 1, towards the folder 5. It will be noted that in this example, the optical axis of the optical part 1 is defined by the optical axis of the output diopter 6. It will be noted that, as for the exemplary embodiment of the, the optical axis of the optical part 1 extends along a longitudinal direction when the module is positioned in a vehicle, in its normal mounting position.

[0052] It will be understood that in this embodiment, by means of the reflecting surface 7, the collimating member 4 makes it possible to reflect a first part of the light rays towards a first zone of the ridge line not including the inflection point 53, and a second part of the light rays towards a second zone of the ridge line, distinct from the first zone and including the inflection point 53. Indeed, the collimating member 4 can direct the first part of the light rays towards the reflecting surface 7 which can in turn direct this first part of the light rays towards a first zone of the ridge line not including the inflection point 53.And, the collimating member 4 can direct the second part of the light rays towards the reflecting surface 7 which can in turn direct this second part of the light rays towards a second zone of the ridge line, distinct from the first zone and comprising the inflection point 53.

[0053] As previously described, it is possible to combine a plurality of light modules 1, and in particular, several light modules as illustrated in the in order to form a light device. The emission of light rays in a direction transverse to the optical axis of the optical part 1 by the light source, and the orientation in this transverse direction of the input diopter 3 and the collimation member 4 then makes it possible to facilitate the formation of all the light modules of the light device in a single piece. In other words, this arrangement of the input diopter 3 and the collimation member 4 of the light modules makes it easier to form a single-piece light device. In particular, this arrangement makes it possible to facilitate the injection and demolding of the single-piece optical device.

[0054] Examples of satisfactory sizing are given below, without limitation:

[0055] - use of a light source in the form of LEDs with a surface area of ​​1 mm² and a focal length of 25 mm;

[0056] - alternatively, use of a light source in the form of LEDs with a surface area of ​​2 mm² and a focal length of 50 mm.

[0057] the focal lengths indicated above can tolerate a variation of plus or minus 40% around the indicated value, and preferably of plus or minus 20%.

[0058] The invention is not limited to the embodiments previously described.

[0059] Reference lists1. Optical part2. Support3. Entrance diopter31. Central door32. Peripheral portion4. Collimating device41. Central sector42. Lateral sector43. Complementary sector5. Folder51. First line52. Second line53. Inflection point

Claims

Light module for producing a beam configured to participate in the formation of a dipped beam, comprising a light source capable of emitting light rays, and a single-piece optical part (1) having: an input diopter (3) intended to receive light rays from the light source, a collimation member (4) configured to produce a reflection within the optical part (1) of light rays received by the input diopter (3), a folder (5) comprising a crest line having two cut-off lines (51, 52) joining at an inflection point (53), and an output diopter (6) through which the beam is projected, characterized in that the collimation member (4) comprises a first portion configured to reflect a first part of the light rays towards a first zone of the crest line not comprising the inflection point (53),and a second portion configured to reflect a second portion of the light rays toward a second area of ​​the ridge line, distinct from the first area and including the inflection point (53)., Module according to the preceding claim, in which the first portion and / or the second portion comprises a plurality of sectors spaced from each other. Module according to the preceding claim, in which the plurality of sectors of the first portion comprises two lateral sectors (42) arranged on either side of a central sector (41) of the collimation member (4). Module according to the preceding claim, in which the two lateral sectors (42) and the central sector (41) are arranged on a surface of the collimation member (4) located above an optical axis of the optical part (1). Module according to any one of the two preceding claims, in which the second portion comprises the central sector (41). Module according to any one of the preceding claims, in which the collimation member (4) comprises a complementary sector (43) configured to reflect a third part of the light rays towards the entire ridge line. Module according to any one of the preceding claims, wherein the input diopter (3) comprises a central portion (31) configured to transmit light rays towards the second zone of the ridge line. Module according to any one of the preceding claims, in which, along an optical axis direction of the optical part (1), the distance separating the folder (5) and the output diopter (6) is equal to the focal length of the output diopter (6). Module according to any one of the preceding claims, wherein the inflection point (53) is located on the optical axis of the optical part (1). Module according to any one of the preceding claims, in which at least one of the two cut-off lines (51, 52) is curvilinear. Light module according to any one of the preceding claims, wherein the light source is configured to emit the light rays along the optical axis of the optical part (1), the input diopter (3), the collimation member (4) and the output diopter (6) being aligned along the optical axis. Light module according to any one of claims 1 to 10, in which the light source is configured to emit the light rays along an axis transverse to the optical axis of the optical part (1), the input diopter (3) and the collimating member (4) being arranged along the transverse axis, and the optical part (1) comprising a reflective surface (7) arranged between the collimating member (4) and the folder (5), and configured to receive the light rays reflected by the collimating member (4) and reflect them along the optical axis of the optical part (1), towards the folder (5). A lighting device comprising a plurality of modules according to any preceding claim. Device according to the preceding claim, in which at least some of the modules of the plurality of modules are superimposed. Device according to the preceding claim, in which the superimposed modules have an offset along an optical axis direction, preferably forming a rectilinear slope.

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