LIGHT MODULE

Description

Domaine technique

[0001] The present invention relates to the field of lighting and / or signaling and the components, particularly optical ones, involved therein. Its application is particularly advantageous in the field of motor vehicles. Specifically, it relates to a light module and to a light device incorporating a plurality of such modules. One application is the formation of a low-beam type beam suitable for equipping the front of a motor vehicle. ETAT DE LA TECHNIQUE

[0002] In the automotive sector, we know of devices 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 where desired while limiting brightness in certain areas.

[0004] Thus, we know of lighting modules or projectors, among which we traditionally find dipped headlights, or low beams, with a range on the road of approximately 70 meters, which are used primarily at night and whose beam distribution is such that it avoids dazzling the driver of an oncoming vehicle. Typically, this beam has a cutoff in its upper part with a horizontal portion, preferably about 0.57 degrees below the horizon, so as not to illuminate the area where the driver of an oncoming vehicle should be positioned, and an angled portion.

[0005] The precise definition of the angled shape, also called a "kink" in English, is already established in the prior art, for example in patent publication FR 3010772 A1. In this document, a dioptric element is used to create a portion of a low beam, and in particular the cutoff section of the low beam. From an input surface, the rays undergo internal reflection within the dioptric element and are projected by an output diopter. However, beforehand, the beam is shaped by a bending machine, in practice into a trench whose crest line has a profile representative of the desired cutoff. The light rays that strike the bending machine below the crest line are reflected, thus avoiding an upward projection, as would occur with a high beam.

[0006] The advantage of this dioptric component, offering a compact and simple solution for beamforming, is clear. However, this portion must be complemented by at least one other beam segment produced by another module. Specifically, once the first module produces a cutoff segment, at least one other module must be used to create a wider, relatively horizontally flattened (also called a "flat") portion of the final crossover beam. Besides the increased number of different modules this requires, the overall appearance of the lighting system is not uniform when illuminated. Indeed, when viewed from an angle away from the optical axis, the illuminated appearance of the module producing the cutoff bend differs from that of the module producing the flattened beam.

[0007] One object of the present invention is therefore to propose a light module and a device which makes it possible to overcome at least in part the aforementioned disadvantages.

[0008] The other objects, features, and advantages of the present invention will become apparent from an examination of the following description and accompanying drawings. It is understood that other advantages may be incorporated. RESUME

[0009] To achieve this objective, according to one embodiment, a light module for producing a beam configured to participate in the formation of a dipped beam is provided, comprising a light source capable of emitting light rays, and a single-piece optical component having: an input diopter intended to receive light rays from the light source, a collimation device configured to produce a reflection within the optical component of light rays received by the input diopter, a bending device comprising a crest line having two cutting lines joining at an inflection point, and an output diopter through which the beam is projected, characterized in that the collimation organ 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, and a second portion 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.

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

[0011] Preferably, the entire envelope of the crossover beam is covered by the beam projected by a module. Thus, each module exhibits functional independence. While one might think that a given optical component is solely intended to produce a single beam shape, here we have a module whose optical component comprises several sections, each designed to project a specific beam shape.

[0012] Specifically, the first portion of the collimating element can form a first sub-beam that widens the overall projected beam, for example, a flattened or wide beam, in the sense that the light is preferably spread mostly horizontally, although this does not preclude the upper edge of the beam from being entirely horizontal, as detailed later. The second portion can form a second sub-beam concentrated at the point where the cutoff direction changes, corresponding to the kink of the low beam. Optionally, other rays from the light source can supplement these two sub-beams; in particular, the second sub-beam can be reinforced by light propagating directly within the optical element from a region of the entrance diopter to the point of inflection.

[0013] In an optional embodiment, one or both of the first and second portions are implemented in several sectors located some distance apart. This allows for the use of a large reflection area and the spatial diversification of the reflection zones contributing to 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 system comprising multiple light modules. While it's possible for a single light module to provide the entire low beam, combining several modules allows for easy adjustment of the overall light output required for the low beam function. By configuring the different modules so that their beams overlap towards the front of the vehicle, they combine their effects to achieve the desired illumination.

[0015] Furthermore, if these different modules are identical, preferably including in terms of light output, the visual effect they produce when illuminated does not differ from one module to another for an observer outside the vehicle. This results in an aesthetically consistent appearance. For example, the modules can be stacked.

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

[0017] The aims, objects, features and advantages of the invention will become clearer from the detailed description of an embodiment thereof, which is illustrated by the following accompanying drawings in which: [ Fig.1 ] There [ Fig.1 ] represents a way of implementing a module in perspective. Fig.2 ] There [ Fig.2 [ ] represents an example of superimposing modules to form a lighting device. Fig.3a ] There [ Fig.3a ] represents a perspective view of relevant surfaces within a module. Fig.3b ] There [ Fig.3b ] illustrates a projection of light from a light module producing a beam shape corresponding to a dipped headlight. Fig.4a ] There [ Fig.4a ] represents elements of the light module that contribute to forming part of the beam. Fig.4b ] There [ Fig.4b ] illustrates a projection of light from the light module using the elements shown in the previous figure. Fig.5a ] There [ Fig.5a ] represents elements of the light module that contribute to forming part of the beam. Fig.5b ] There [ Fig.5b ] illustrates a projection of light from the light module using the elements shown in the previous figure. Fig.6a ] There [ Fig.6a ] represents elements of the light module that contribute to forming part of the beam. Fig.6b ] There [ Fig.6b ] illustrates a projection of light from the light module using the elements shown in the previous figure. Fig.7a ] There [ Fig.7a ] represents elements of the light module that contribute to forming part of the beam. Fig.7b ] There [ Fig.7b ] illustrates a projection of light from the light module using the elements shown in the previous figure. Fig.8 ] There [ Fig.8 ] represents another form of certain surfaces of the module, particularly with a curved-shaped bender. Fig.9 ] There [ Fig.9 ] represents a perspective view of relevant surfaces in a module according to one embodiment variant.

[0018] The drawings are given as examples and are not limiting to the invention. They constitute schematic representations of principle intended to facilitate understanding of the invention and are not necessarily to scale with practical applications. DESCRIPTION DÉTAILLÉE

[0019] Before beginning a detailed review of embodiments of the invention, optional features that may be used in combination or alternatively are stated below. 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 collimation member 4; 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; the second portion comprises the central sector 41; it is preferably constituted by this central sector 41; the collimation member 4 comprises a complementary sector 43 configured to reflect a third part of the light rays towards the entire ridge line; the entrance 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 bending tool 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 lines 51, 52 is curvilinear; the light source is configured to emit light rays along the optical axis of the optical part 1, the input diopter 3, the collimating element 4 and the output diopter 6 being aligned along the optical axis;The light source is configured to emit light rays along an axis transverse to the optical axis of the optical part 1, the entrance diopter 3 and the collimating element 4 being arranged along the transverse axis, and the optical part 1 having a reflective surface 7 disposed between the collimating element 4 and the bending tool 5, and configured to receive the light rays reflected by the collimating element 4 and reflect them along the optical axis of the optical part 1, towards the bending tool 5. The invention also relates to a lighting device comprising a plurality of modules as described above; preferably at least some of the modules of the plurality of modules are superimposed; this superposition is advantageously made vertically, that is to say preferably perpendicular to the optical axis and horizontally;The superimposed modules advantageously exhibit an offset along an optical axis direction, preferably forming a straight slope.

[0020] It is specified that in the context of the present invention, the term "elbow or angled" means that the light projection includes an upper cut having a substantially flat portion and an oblique portion, the two portions forming an angle between them of between 15° and 45°.

[0021] In the characteristics described below, the terms relating to verticality, horizontality, or transverseity (or lateral direction), or their equivalents, refer to the position in which the module is intended to be mounted in a vehicle. The terms "vertical" and "horizontal" are used in this description to designate directions, with "vertical" (corresponding to the height of the systems) being perpendicular to the horizontal plane, and "horizontal" being parallel to the horizontal plane. These directions are to be considered under the operating conditions of the device in a vehicle. The use of these terms does not imply that slight variations around the vertical and horizontal directions are excluded from the invention.For example, an inclination of + or - 10° relative to these directions is considered a minor variation around the two preferred directions. With respect to the horizontal plane, the inclination is generally between -5° and +4°, and laterally between -6° and +7.5°. Furthermore, the adjectives "lower" and "higher" are to be understood in relation to the vertical direction; in the same context, a higher element will be located above (but not necessarily in contact with, or directly above) a lower element, along the vertical direction.

[0022] The light module proposed herein produces a first sub-beam and a second sub-beam corresponding to light projections of different shapes, which combine to create a projected beam with the spatial configuration of a dipped headlight beam. As an option, the light module is configured to perform the dipped headlight function on its own and can optionally be combined with other light modules according to the invention to increase the luminous power, it being understood that with the increased luminous power, the dipped headlight function remains compliant with regulations.

[0023] According to another option, the light module is configured to provide the light distribution required for the dipped beam function, but at a power level lower than that required by regulations. The light module is then combined with one or more other light modules according to the invention to achieve the required light power level for the dipped beam function. Preferably, all modules are identical.

[0024] The first sub-beam of light produced by the module can be a beam of limited width. It is projected overall below the cutoff of the low beam and serves to illuminate the near field in front of the vehicle. A near-field beam of a low beam is typically a relatively wide projection laterally in front of the vehicle, mostly or entirely below the horizon line, generally aiming for good illumination distribution across the entire lit area.

[0025] The second light sub-beam can define an angled zone. Thus, the combination of the first and second light sub-beams defines at least one low beam type beam, possibly, except with regard to the luminous power provided.

[0026] The beams of the dipped headlight type typically present a first lateral zone (normally on the edge of the road) projecting at a slightly higher height 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.

[0027] Such a module includes a light source, preferably a single unit; this may be a light-emitting diode whose mean emission axis is located on the optical axis of the module's optical component. For example, the source's power may be 300 lm.

[0028] The collimation device 4 comprises a first portion configured to reflect a first part of the light rays towards a first zone of the ridge line that does not include the inflection point 53. This first zone is advantageously divided into two elementary zones located on either side of the inflection point 53, but not including the point itself. Each of these two elementary zones can be defined by a first line 51 and a second line 52 of the ridge line. Complementarily, the second portion of the collimation device 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 is understood to mean that there are no points of commonality between the first zone and the second zone. According to one possibility, the second zone comprises only the physical location of the inflection point.The width of the second zone, measured perpendicularly 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 along the first line 51 and the second line 52.

[0029] There [ Fig.1 [ ] gives an example of an embodiment of the module. The latter mainly comprises an optical element 1 which extends along an optical axis from an input diopter 3 to an output diopter 6. Light is received by the input diopter 3 from a light source, preferably mounted on a support 2, for example, a printed circuit board. Along the path of the light entering the optical element, a collimation device 4 and a bending device 5 successively intercept the light rays from the source.

[0030] In this embodiment example, 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.

[0031] Preferably, the light rays from the source are not processed in any way other than by the optical component 1; the beam is therefore advantageously produced entirely by this single element. The optical component 1 is a single piece and is preferably made of a single material. This could be polymethyl methacrylate (PMMA) or polycarbonate. For example, its shape could be obtained through a molding process.

[0032] There [ Fig.2 ] reflects the possibility of combining a plurality of light modules 1. Thus, along the vertical direction, modules follow one another in this example with parallel and advantageously coplanar optical axes. In addition, this figure presents an additional option in which the modules 1 are offset along the direction of the optical axis so as to arrange them according to a slope. Optionally, the sources of the different modules can be supported by the same support 2. The inclination of the latter in the [ Fig.2 ] reflects 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 further back from the front of the vehicle the higher they are positioned.

[0033] There [ Fig.3a ] is a schematic representation of surfaces relevant to light processing, within optical component 1. It should be noted that this component is a single piece, so the schematic distinction of the surfaces illustrated in the [ Fig.3a ] should be understood as a partial representation of certain elements, and in particular of certain surfaces of the external envelope of part 1.

[0034] The assembly includes an input diopter 3, preferably centered on the optical axis of the module. This diopter admits light rays from the upstream source (not shown in the figure). A collimation element 4, directed towards the output diopter 6, reflects a portion of the light rays. This reflection is advantageously of the total internal reflection type; therefore, the surfaces of the collimation element 4 have angles configured to allow this internal reflection, thus preferably avoiding the need for a reflective surface on the collimation element itself.

[0035] There [ Fig.3a The diagram also illustrates the folding machine 5, which has a first line 51 and a second line 52 at its crest, with lines 51 and 52 meeting at an inflection point 53. Preferably, the inflection point 53 is located on the optical axis. It is understood that the folding machine 5 shapes the light to produce a cut whose line is defined by the first line 51 and the second line 52. As seen previously, to produce the characteristic angled shape of a dipped headlight, an angle is present between the first and second lines at the inflection point 53.

[0036] There [ Fig.3b [ ] provides an example of an isocandela curve representative of a projection produced by the proposed light module. The flattening of the beam is clearly visible along the cutoff line, with a concentration of intensity near the optical axis. Also noticeable at this point is the effect of the cutoff, with a portion of the beam projecting less high to the left than to the right, which is typical of a projection for right-hand drive.

[0037] The following are described different parts of the module, each enabling the production of different parts of the complete beam presented to the [ Fig.3b ].

[0038] Thus the [ Fig.4a ] presents means contributing to the provision of at least part of the bent area of ​​the beam. A central portion 31 of the input diopter 3, typically a circular area centered on the optical axis, admits light from the source and reflects it in a focused manner at the inflection point 53 of the bending machine 5. The light is thus concentrated around the inflection point and allows the bent area to be precisely defined. A representation of this portion of the beam projected through the output diopter 6 is reflected at the [ Fig.4b ].

[0039] The collimation device 4 also provides a portion of light rays used to define the second sub-beam, that is, the one defining the angled portion of the dipped beam. The [ Fig.5a ] presents surfaces relevant for this purpose: a second portion of the entrance diopter 3, typically a peripheral portion 32 arranged around the aforementioned central portion 31, receives certain light rays from the source. Part of the rays thus admitted into the optical part 1 reach the central sector 41 of the collimating element 4 where they undergo reflection towards the bending machine 5, towards the inflection point 53. As seen previously with reference to the [ Fig.4a ], this allows us to shape this part of the beam to obtain the result of the [ Fig.5b ]. It is understood that the means presented with reference to the [ Fig.5a ] and those described with reference to the [ Fig.4a ] allow their effects to be combined to achieve a desired level of light intensity for this part of the final beam.

[0040] Preferably, sector 41 is located in an upper half-plane of the optical component 1, meaning a portion of the latter situated above the optical axis in the module's normal operating position, on the side opposite the bending machine 5. Also preferably, sector 41 intercepts a vertical plane passing through the optical axis. Preferably, sector 41 is symmetrical with respect to this plane. For example, the sector 41 can 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 organ 4 defining this sector 41 is chosen to produce the collimation in the direction of the inflection point 53. Depending on one possibility, the profile of sector 41 along the vertical plane passing through the optical axis can be of the elliptical type with a line of foci around the inflection point 53 or a parabolic focus at the inflection point 53.

[0041] The light projected by the light module is complemented by another, flatter sub-beam, making it possible to typically achieve the extended width shape of a dipped headlight.

[0042] To that end, the [ Fig.6a [ ] shows that the collimation device 4 can comprise two sectors 42 arranged around the central sector 41 described previously. These sectors 42 receive light from the peripheral portion 32 of the entrance diopter 3 and are configured to reflect it towards the lines 51, 52 of the folding mechanism 5. As before, these sectors can be given an elliptical shape to produce reflection towards a focal line located on the lines 51, 52. Preferably, the sectors 42 are symmetrical about the vertical plane passing through the optical axis. Preferably, they are contiguous with the central sector 41. A first lateral sector 42 directs the light towards the first line 51, while a second lateral sector 42 directs the light towards the second line 52; this reflection occurs without impacting a central area of ​​the cutoff line, around the inflection point 53, given the configuration of these sectors, located around the central sector 41.

[0043] There [ Fig.6b ] provides an example of a portion of light projected through the corresponding output diopter 6. Note the complementary nature of the light emitted by this portion of the collimating element 4 and the light emitted by the preceding portion (typically the central sector 41) of this element 4. The visible light projection at the [ Fig.6b The beam is spread laterally. It has an upper edge with a horizontal left portion that may correspond to the upper edge of the overall beam (low beam) at that point. The right portion is not necessarily horizontal and, in this case, is inclined, meaning that this portion is at least partially covered by the additional projection forming the angled portion, raising the beam upwards.

[0044] Depending on one possibility, these two portions are supplemented by light reflected from another sector of the collimation organ 4. This is what is reflected by the [ Fig.7a in which a complementary sector 43 of the surface of the collimating element 4 is arranged opposite sectors 41, 42 relative to a horizontal plane passing through the optical axis. Sector 43 is therefore located in a lower half-plane of the optical element 1. Preferably, 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 sweep across the entire periphery of the entrance diopter 3, thus forming a 360° surface around the latter.

[0045] The sector 43 is configured to reflect light rays from the peripheral portion 32 of the entrance diopter 3 towards the first and second lines 51,52 of the folder 5. As before, a suitable shape can be used for the sector 43 so as to form a line of foci located at this point for reflection, and in particular a parabolic shape.

[0046] There [ Fig.7b ] provides an example of light projection corresponding to the participation of sector 43. Given the angular sector it sweeps, sector 43 impacts the entire width of the folder 5, so that the resulting beam portion participates both in the angled area around the inflection point 53, and also in the beam width, including in its flattened part.

[0047] There [ Fig.8 [ ] presents a variant embodiment of the functional surfaces of the optical component 1. More specifically, this variation concerns the bending device 5, the principle of the collimation element 4, with various portions remaining identical to the previous explanations. According to this arrangement, the bending device 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 bending device 5 follows a ridge line profile, with the first line 51 and the second line 52 extending curvilinearly with a convexity oriented towards the collimation element 4.

[0048] In general, 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.

[0049] There [ Fig.9 ] 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 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 has a reflective surface 7 arranged between the collimation organ 4 and the bending machine 5.

[0050] The input diopter 3 and the collimating element 4 are arranged along this transverse axis. The reflecting surface 7 receives the light rays reflected by the collimating element 4 and reflects them along the optical axis of the optical part 1, towards the bending machine 5. Note that in this example, the optical axis of the optical part 1 is defined by the optical axis of the output diopter 6. Note that, as in the example of the embodiment of the [ Fig.1 ], 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.

[0051] It will be understood that in this example of embodiment, through the reflective surface 7, the collimation 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 collimation member 4 can direct the first part of the light rays towards the reflective 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 collimation organ 4 can direct the second part of the light rays towards the reflective surface 7 which can in turn direct this second part of the light rays towards a second area of ​​the ridge line, distinct from the first area and including the inflection point 53.

[0052] As previously described, it is possible to combine a plurality of light modules 1, and in particular, several light modules as illustrated on the [ Fig.9to form a luminous device. The emission of light rays along a direction transverse to the optical axis of the optical part 1 by the light source, and the orientation along this transverse direction of the entrance diopter 3 and the collimation element 4, then facilitates the formation of all the luminous modules of the luminous device in a single piece. In other words, this arrangement of the entrance diopter 3 and the collimation element 4 of the luminous modules makes it easier to form a monobloc luminous device. In particular, this arrangement facilitates the injection and demolding of the monobloc optical device.

[0053] The following are examples of satisfactory sizing solutions, but they are not exhaustive: use of a light source in the form of an LED with a surface area of ​​1 mm² and a focal length of 25 mm; alternatively, use of a light source in the form of an LED with a surface area of ​​2 mm² and a focal length of 50 mm. The focal lengths indicated above can tolerate a variation of plus or minus 40% around the indicated value, and preferably plus or minus 20%.

[0054] The invention is not limited to the embodiments previously described. Reference lists

[0055] 1. Optical element 2. Support 3. Entrance diopter 31. Central gate 32. Peripheral portion 4. Collimation element 41. Central sector 42. Lateral sector 43. Complementary sector 5. Bending machine 51. First line 52. Second line 53. Inflection point

Claims

1. A luminous module for producing a beam configured to contribute to the formation of a low beam, comprising a light source capable of emitting light rays, and a single-piece optical component (1) having: - an entrance dioptric interface (3) intended to receive light rays from the light source, - a collimation member (4) configured to produce a reflection, within the optical component (1), of light rays that are received by the entrance dioptric interface (3), - a folder (5) comprising a crest line having two cutoff lines (51, 52) that join at an inflection point (53), and - an exit dioptric interface (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 toward a first zone of the crest line that does not comprise the inflection point (53), and a second portion configured to reflect a second part of the light rays toward a second zone of the crest line that is separate from the first zone and comprising the inflection point (53).

2. The module as claimed in the preceding claim, wherein the first portion and / or the second portion comprises a plurality of sectors that are spaced apart from one another.

3. The module as claimed in the preceding claim, wherein the plurality of sectors of the first portion comprises two lateral sectors (42) that are disposed on either side of a central sector (41) of the collimation member (4).

4. The module as claimed in the preceding claim, wherein the two lateral sectors (42) and the central sector (41) are disposed on a surface of the collimation member (4) that is situated above an optical axis of the optical component (1).

5. The module as claimed in either one of the two preceding claims, wherein the second portion comprises the central sector (41).

6. The module as claimed in any one of the preceding claims, wherein the collimation member (4) comprises a complementary sector (43) configured to reflect a third part of the light rays toward the entire crest line.

7. The module as claimed in any one of the preceding claims, wherein the entrance dioptric interface (3) comprises a central portion (31) configured to transmit light rays toward the second zone of the crest line.

8. The module as claimed in any one of the preceding claims, wherein, in a direction of the optical axis of the optical component (1), the distance separating the folder (5) and the exit dioptric interface (6) is equal to the focal distance of the exit dioptric interface (6).

9. The module as claimed in any one of the preceding claims, wherein the inflection point (53) is situated on the optical axis of the optical component (1).

10. The module as claimed in any one of the preceding claims, wherein at least one of the two cutoff lines (51, 52) is curvilinear.

11. The luminous module as claimed in any one of the preceding claims, wherein the light source is configured to emit the light rays along the optical axis of the optical component (1), the entrance dioptric interface (3), the collimation member (4) and the exit dioptric interface (6) being aligned along the optical axis.

12. The luminous module as claimed in any one of claims 1 to 10, wherein the light source is configured to emit the light rays along an axis transverse to the optical axis of the optical component (1), the entrance dioptric interface (3) and the collimation member (4) being disposed along the transverse axis, and the optical component (1) having a reflective surface (7) disposed between the collimation member (4) and the folder (5) and configured to receive the light rays that are reflected by the collimation member (4) and to reflect them along the optical axis of the optical component (1) toward the folder (5).

13. A luminous device comprising a plurality of modules as claimed in any one of the preceding claims.

14. The device as claimed in the preceding claim, wherein at least some of the modules of the plurality of modules are superposed.

15. The device as claimed in the preceding claim, wherein the superposed modules have an offset in a direction of the optical axis, preferably forming a rectilinear slope.