Optical module for lighting system of motor vehicle

Abstract

The invention relates to an optical module (1) for a lighting system (10) of a motor vehicle, comprising: at least one light source (2); a one-piece primary optical system (4) comprising at least one primary optical member (5) arranged to form a primary image from the light source; a mask (7) placed downstream of the primary optical member and having at least one opaque region (71) and a window (72) formed in the opaque region, the window being arranged facing the primary optical member so as to form a secondary image from the primary image, a section (54) of the integral primary optical system extending through the window; and a projection optical system (8) arranged to project a sub-image formed by the mask onto the ground.

Description

[0001] The invention relates to the field of lighting systems for motor vehicles. More precisely, the invention relates to an optical module for a lighting system for a motor vehicle.

[0002] In the field of automotive lighting and light-based signaling, it is known to perform, in addition to conventional functions, functions allowing the projection of signs or luminous patterns onto the ground in the vicinity of the vehicle. Functions of this type can be used, for example, in the context of driver assistance to produce markings on the ground that allow indicating traffic lanes. Functions of this type can also be used to enhance conventional signaling functions in order to warn another road user of a change in path.

[0003] In order to project luminous patterns or logos onto the ground, a known solution consists in introducing dark areas into a pixelated light beam emitted by a lighting system of a motor vehicle, so that the driver or road user sees the pattern or logo by the contrast between the dark and light areas. However, this solution requires a particularly high resolution of the light beam and therefore a particularly large number of light sources, which makes the lighting system expensive and complex.

[0004] Another known solution consists in collecting the light emitted by a plurality of light sources via light guides and then projecting the image of the exit face of these light guides onto the ground via a projection optical system. Although this solution is satisfactory from the point of view of efficiency and simplicity, it does not allow the formation of complex patterns on the ground without increasing the number of light sources and light guides. Furthermore, due to the complexity of producing the light guides by injection molding of plastics and due to the presence of an exit optical member to which all the light guides are connected to allow their integration into an optical module, and the thickness of which may therefore have an impact on the optical performance of the optical module, the clarity of the pattern projected onto the ground may be reduced.

[0005] Another known solution consists in adding to the previous solution an opaque mask provided with a window or a transparent zone, so that a new image projected by the projection optical system can be formed from the image formed by the light guide. However, this solution requires the use of additional optical parts and therefore requires an increase in the size, cost, and production complexity of the optical module. In addition, although the light guide allows a light beam with a small aperture to be obtained, this aperture is still greater than the size of the window or transparent zone of the mask, and therefore a large amount of light emitted by the light source is intercepted by the mask, which significantly reduces the efficiency of the module. In addition, due to the production complexity of these light guides when it is desired to manufacture the light guides by injection molding, it is not possible to reduce the size of the light guides, in particular in order to configure the light guides to achieve short focal lengths and / or high resolutions. Finally, in the case where the mask is made of glass, Fresnel reflections may occur between the mask and the exit end of the light guide, or even between the mask and the optical system arranged downstream of the mask, which further reduces the efficiency of the module.

[0006] Therefore, there is a need for a compact optical module that can efficiently project luminous patterns or signs onto the ground, which compact optical module will allow complex patterns (such as patterns with details within the pattern itself, or patterns composed of several unconnected sub-patterns) to be generated from a single light source, and / or will improve the clarity of the pattern projected onto the ground.

[0007] The present invention falls within this background and is intended to meet these needs.

[0008] To this end, a subject of the invention is an optical module for a lighting system for a motor vehicle, comprising:

[0009] a. at least one light source;

[0010] b. an integrated primary optical system comprising at least one primary optical component arranged to form a primary image from the light source;

[0011] c. a mask placed downstream of the primary optical member and having at least one opaque region and a window formed in the opaque region, the window being arranged facing the primary optical member so as to form a secondary image from a primary image, a segment of the integrated primary optical system extending through the window;

[0012] d. A projection optical system arranged to project the secondary image formed by the mask onto the ground.

[0013] In the present invention, the light emitted by the light source is deflected by the main optical component, thereby forming a main image. This may be a question of a virtual image or a real image, which may correspond substantially to an enlargement of the image of the emission surface of the light source, or more precisely a distorted image of this emission surface. It should be noted that most of the light emitted by the light source, or even almost all of the light, can therefore be collected by the main optical component to form a main image. In addition, it should be understood that, because a part of the main optical system passes through the mask, the mask can be positioned in the immediate vicinity of the area where the main optical component forming this main image is located. This improves the efficiency and compactness of the optical module. Therefore, the light can pass through the window in the mask so that the main image is converted into a secondary image by the mask. Therefore, the window can define the shape or pattern in the main image to form a secondary image. Therefore, this secondary image, or a combination of the main image and the secondary image, can be projected onto the ground by the projection optical system. The fact that the secondary image is projected by the projection optical system particularly makes it possible to obtain the following pattern on the ground, the shape of which has a satisfactory clarity, regardless of the manufacturing quality of the main optical component.

[0014] In the present invention, the luminous pattern formed by projecting a secondary image onto the ground using a projection optical system can form a sign, a pictogram, a geometric pattern, or a group of multiple signs, pictograms or geometric patterns, or a combination of these, such as a pictogram associated with one or more geometric patterns.

[0015] In the present invention, the expression "opaque zone" is understood to mean a zone capable of intercepting light and completely preventing this light from being transmitted through the mask. The mask can advantageously be formed by a thin plate made of an opaque material and provided with slots or cutouts allowing one or more windows to be created.

[0016] Advantageously, the window or each window is arranged facing the primary optical member so as to partially or completely define the shape of the primary image and / or define a pattern within the primary image, for example by defining the shape of said pattern by means of an opaque area partially or completely surrounding the window or by inversely defining said pattern by means of an opaque area arranged in the window. In other words, the defined shape of the primary image and / or the defined pattern within the primary image thus define the secondary image.

[0017] In one embodiment of the invention, the primary optical system may be produced by overmolding at least one material on a mask. In other words, during overmolding of the primary optical system, the material penetrates into the window or each window of the mask. In this case, it is ensured that the mask can be placed in the immediate vicinity of the area where the primary optical component forming the primary image is located, so that the secondary image is formed on the primary image. The primary optical system will potentially be made by overmolding the same polymer or multiple polymers of the same refractive index. "Same polymer" means that the primary optical component and the exit optical component are made of a material produced from at least the same base polymer, for example polycarbonate (or PC) or PMMA or even silicone. However, these materials may have different fillers.

[0018] Advantageously, the projection optical system has a focal plane that passes substantially through the mask or is substantially located between the primary optical component and the mask. For example, the focal plane may be a plane or a curved surface that is positioned substantially flush with a wall downstream of the mask. In the case where the secondary image is completely defined by the mask, it will therefore be possible to provide a projection optical system that is focused on the mask so that the secondary image is projected onto the ground with sharp edges. In the case where the secondary image is defined by the mask and the primary optical component, it will therefore be possible to provide a projection optical system that is focused on the junction between the primary optical component and the mask so that the projection optical system projects a combination of the primary image and the secondary image onto the ground, this combination having sharp edges.

[0019] Preferably, the projection optical system and the mask are arranged such that the secondary image projected by the projection optical system onto the ground is completely bounded by substantially sharp edges.

[0020] In the present invention, "the image projected onto the ground has a substantially clear edge" means that between two points located on either side of the edge in a direction substantially perpendicular to the edge and separated by at least 1 cm, in particular at at least one point, the change in illumination on the ground caused by the projection has a slope greater than or equal to 10 lux / cm.

[0021] In one example of an embodiment of the invention, the projection optical system is arranged to project the secondary images onto the ground in a vicinity of the vehicle. "Nearby" means that the projection distance is less than 10 meters, in particular less than 5 meters, and / or the entire projection direction forms an angle of at least 5° below the horizontal, in particular at least 10° below the horizontal. Thus, these images can contribute to the performance of functions indicating the path followed by the vehicle, in particular functions such as direction indicators or reversing lights.

[0022] It may be provided that the optical module comprises a single main optical component.

[0023] In an alternative embodiment of the invention, the optical module comprises a plurality of selectively controllable light sources. Where appropriate, the integrated primary optical system comprises a plurality of primary optical components, each primary optical component being arranged to form a primary image from one of the light sources, and the mask comprises a plurality of windows, each window being arranged to face one of the primary optical components so as to form a secondary image from the primary image formed by the primary optical component, a section of the integrated primary optical system extending through each of the windows.

[0024] Advantageously, the primary optical components are arranged in a matrix array. In other words, the primary optical components are arranged adjacent to each other to form rows and columns, in particular such that the entrance faces and exit faces are organized in a matrix array while being spaced apart from each other by a constant spacing.

[0025] In one embodiment of the present invention, the primary optical system comprises an exit optical component, the primary optical component comprises an incident surface for light and a joint surface, the light source is placed facing the incident surface, the joint surface connects the primary optical component to the segment extending through the window, the segment is connected to the exit optical component. In other words, the segment forms a connecting segment between the primary optical component and the exit optical component.

[0026] It will be appreciated that in this embodiment the primary optical system is an integral part overmolded on a mask located between the junction face of the primary optical member and the exit optical member, while abutting the junction face of the primary optical member and the upstream face of the exit optical member, thereby improving the efficiency and opacity of the optical module.

[0027] In particular, it can be provided that the exit optics member defines a receptacle in the upstream face, within which receptacle the mask is located.

[0028] Advantageously, the exit optical component has a smooth, substantially dome-shaped exit surface. For example, the exit optical component can be a spherical frustum, or as a variant, a cylindrical frustum. This feature allows the exit optical component to perform the function of correcting geometric aberrations introduced by the projection optical system during the projection of said image of the joint surface onto the ground.

[0029] Where appropriate, it can be provided that the joining face of the or indeed each primary optical component and the upstream face of the mask lie substantially in the same plane.

[0030] In one embodiment of the invention, the primary optical component comprises a primary light guide, the incident surface of the light guide being connected to the junction surface of the light guide by an envelope, so that each point on the shape of the incident surface is connected to a point on the shape of the junction surface by a straight line.

[0031] According to this feature, light emitted by the light source through the incident face of the main light guide can propagate through the main light guide to the junction face via total internal reflection from the walls of the light guide. The fact that the envelope is a developable surface makes it possible to form a pattern completely defined by substantially clear edges at the junction face, which forms the main image and can then be transformed by the mask.

[0032] For example, the entrance face of the or each main light guide may be substantially rectangular, and the junction face of the or each main light guide may have a shape substantially different from the shape of the entrance face of the main light guide, in particular from the shape of the exit faces of the other main light guides. As a variant, for example in the case of a matrix array arrangement, the entrance faces of the main light guides may all be identical, and the exit faces of the main light guides may all be identical.

[0033] Preferably, the projection optical system has a focal plane which substantially passes through a joint surface at which the primary optical components connect the segments.

[0034] According to one example of an embodiment of the present invention, the primary optical system includes a plurality of primary optical components, which are connected to an exit optical component via connecting sections in such a way that joint surfaces of at least two adjacent primary optical components and the connecting sections connected to these joint surfaces are spaced apart from each other.

[0035] According to an example of embodiment of the present invention, the optical module comprises at least two light sources, each light source being placed facing an incident surface of one of the primary optical components to which the light source belongs. It can be provided that the number of light sources is less than the number of primary optical components, so that one or more primary optical components do not have a light source. As a variant, it can be provided that at least one light source is placed facing the incident surface of each primary optical component. It should be noted that this feature therefore makes it possible to define a standard primary optical element that is usable regardless of the overall pattern that is desired to be projected onto the ground, and then to define the number of sources and the contour and number of zones of the mask only according to this overall pattern. Then, at least one of the patterns of this overall pattern will be defined by the mask.

[0036] Where appropriate, the mask comprises a plurality of windows, each window of the plurality of windows being traversed by one of the connecting sections, the mask being located between the joining surface and the exit optical component.

[0037] In another embodiment of the present invention, the primary optical system may not have an exit optical component arranged downstream of the mask. In this case, the primary optical system will only include one or more primary optical components arranged upstream of the mask, and a segment of the primary optical system extends from each primary optical component through the window of the mask to define the exit surface of the light of the primary optical system.

[0038] Preferably, the or each selectively controllable light source comprises a light emitting semiconductor chip, in particular a light emitting diode. Also preferably, each selectively controllable light source is capable of emitting white light. As a variant, each selectively controllable light source is capable of emitting amber light. Also as a variant, each selectively controllable light source is capable of emitting color controllable light.

[0039] Advantageously, the projection optical system comprises: at least one lens, and / or at least one reflector, and / or a combination of at least one lens and at least one reflector.

[0040] Preferably, the projection optical system may comprise a single projection lens, the focal plane of which substantially passes through the mask. As a variant, the projection optical system may comprise: a substantially planar reflector, the substantially planar reflector being arranged to form virtual images of the secondary images on one side of the substantially planar reflector; and a projection lens, the projection lens being located on the other side of the substantially planar reflector and the focal plane of which substantially passes through the virtual images. This type of projection optical system makes it possible to significantly reduce the volume of the optical module.

[0041] Another subject matter of the invention is a lighting system for a motor vehicle, comprising an optical module according to the invention.

[0042] Advantageously, the lighting system may comprise means for controlling the light source of said optical module.

[0043] For example, the lighting system may include a lighting device such as a motor vehicle taillight and / or a motor vehicle headlight and / or a lighting device arranged in a fender of a motor vehicle and / or in a rearview mirror of a motor vehicle, the optical module being arranged in this lighting device.

[0044] Advantageously, the control unit is able to selectively control each of the light sources of said optical module according to instructions received from a computer of the motor vehicle.

[0045] For example, the control unit can be arranged to control the light emission of a first group of light sources of the optical module according to a first instruction received from a computer of the motor vehicle, and to control the light emission of a second group of light sources of the optical module according to a second instruction received from the computer of the motor vehicle, the second group including at least one light source that does not belong to the first group.

[0046] According to one example, the lighting system may include an additional optical module, which includes at least one additional light source and is capable of emitting a signal transmission light beam, which is particularly controlled, and the control unit may be arranged to control the additional light source of the additional optical module and the light source of the optical module in a synchronized manner according to instructions received from a computer of the motor vehicle.

[0047] The present invention will now be described using examples, which are merely illustrative and in no way limit the scope of the invention, and with reference to the accompanying drawings, in which:

[0048] [ Figure 1 ] schematically and partially shows a cross-sectional view of an optical module according to an embodiment of the present invention;

[0049] [ Figure 2 ] schematically and partially shows [ Figure 1 ] a stereogram of a mask of a module;

[0050] [ Figure 3 ] schematically and partially shows [ Figure 1 ] a stereoscopic view of the primary optical element of a module; and

[0051] [ Figure 4 ] schematically and partially shows a motor vehicle according to an embodiment of the present invention and in combination with [ Figure 1 ]'s light-emitting system of an optical module.

[0052] In the following description, elements that are identical in structure or function and that appear in more than one figure are denoted by the same reference numerals unless otherwise stated.

[0053] [ Figure 1 ] shows an optical module 1 for a lighting system for a motor vehicle according to a first embodiment of the present invention.

[0054] The optical module 1 comprises a plurality of light emitting diodes 2 mounted on a same printed circuit board 3. In the example described, the optical module 1 comprises three LEDs 2, each of which can be controlled independently of the other LEDs to emit yellow or amber light.

[0055] The optical module 1 comprises a primary optical system 4 in the form of an integral optical part 4 arranged downstream of the light-emitting diode 2. Reference will be made to the rear perspective view of this part 4. Figure 2 ]and[ Figure 3 ] to describe the main optical system 4.

[0056] The primary optical system 4 comprises a plurality of primary optical components 5 and an exit optical component 6 connected to the primary optical components 5. In the example described, the primary optical element 4 comprises nine primary optical components 5, each in the form of a light guide. The primary optical components 5 are arranged in a matrix array of three rows and three columns.

[0057] The optical module comprises a mask 7 placed inside the integral part 4, downstream of the main optical member 5. In the example described, the mask 7 is formed by a plate 71 made of opaque material in which holes have been produced, each hole defining a window 72 of predetermined shape. This mask is [ Figure 2 It should be noted that the outline of each window 72 may be different from each other.

[0058] The primary optical system 4 is a one-piece part, the light guide 5 and the exit optical member 6 being made of the same material, i.e. polycarbonate or PC or silicone. In the example described, the primary optical system 4 is produced by overmolding this material on a mask 7. During overmolding, the material thus penetrates into the windows 72 of the mask 7 to define segments 54, each of which joins one of the light guides 5 to the exit optical member 6. In other words, the refractive indexes of the light guide 5, the segments 54 and the exit optical member 6 are identical, so that there is no refractive interface at the junction between these different parts of the primary optical system 4, whereby the light passing through the primary optical system 4 from the light guide 5 to the exit optical member 6 does not undergo deflection, and in particular no reflection at these junctions, allowing the efficiency of the optical module to be increased by 10%.

[0059] Each light guide 5 has an entrance face 51 , towards which one of the LEDs 2 is placed, so that any light emitted by this LED 2 penetrates into the light guide 5 via the entrance face 51 .

[0060] Each light guide 5 is joined to one of the segments 54 by a joining face 52 located opposite the entrance face 51 and on the upstream wall of the mask 7. More precisely, the primary optical system 4 has been overmoulded on the mask 7 so that the joining face 52 and the upstream wall of the mask 7 are located in the same plane.

[0061] For each light guide 5, the incident surface 51 is connected to the junction surface 52 by an envelope 53. The envelope 53 is a developable surface, so each point on the outer shape of the incident surface 51 is connected to a point on the outer shape of the junction surface 52 via the envelope 53 by a straight line. Therefore, when any light emitted by the LED 2 positioned facing the incident surface 51 penetrates into the light guide 5 via this incident surface 51, the light is coupled to this light guide 5, and the light propagates to the junction surface 52 via continuous total internal reflection on the envelope 53, the light is decoupled from the light guide 5 via the junction surface and penetrates into the segment 54 and then into the exit optical member 6. The junction surface 52 thus forms an imaginary exit surface of the light guide 5.

[0062] Thus, the junction surface 52 of the light guide 5 defines a pattern by virtue of its outer shape, the shape of the pattern being predetermined and specific to the light guide 5. Thus, the shape and envelope 53 of the entrance surface 51 of each light guide 5 make it possible to utilize all the light emitted by the LED 2 that passes through the entrance surface 51, so as to obtain a pattern completely defined by substantially sharp edges at the junction surface 52. Likewise, the shape and envelope 53 of the entrance surface 51 make it possible to obtain a uniform distribution of light inside the pattern at the junction surface 52.

[0063] In other words, each light guide 5 is arranged to form an image, referred to as a primary image, at the junction face 52 of the light guide and thus at the upstream face of the mask 7 from the light source 2 placed facing the entrance face 51 of the light guide. The edge of each primary image is defined by the edge of each junction face 52. Furthermore, the light guides 5 are arranged so that two adjacent junction faces 52 are spaced apart.

[0064] It should be noted that in [ Figure 3 ], the incident surfaces 51 are all similar and the junction surfaces 52 are all similar. In other words, the main image obtained at the junction surfaces 52 of the light guides 5 is the same for all light guides 5, regardless of their positions in the matrix array. Therefore, a matrix array of main images identical to each other can be obtained at the mask 7. The presence or absence of an LED facing the incident surface 51 and / or the activation or deactivation of an LED placed facing the incident surface 51 individually define the matrix array of the main image. Therefore, in [ Figure 3 In the example of FIG. 1 , only seven LEDs are provided. In other words, the two light guides 5 do not have a light source flush with their incident faces 51 .

[0065] Without departing from the scope of the invention, shapes other than those described are conceivable, in particular semicircular shapes, rhombus shapes, or deformed rectangular shapes. Likewise, without departing from the scope of the invention, it is conceivable that all the shapes of the incident faces differ from one another, or indeed only the dimensions of some or all the incident faces differ from one another, or indeed only the orientations of some or all the incident faces differ from one another. Likewise, the junction faces of the light guides may differ from one another.

[0066] Each window 72 of the mask 7 faces the junction face 52 of the light guide 5, towards which the light source has been placed. In other words, each window 72 makes it possible to redefine the shape in the primary image formed at the junction face 52 that the window is arranged to face, thereby forming a secondary image. Therefore, the periphery of each window 72 defines the shape of each secondary image. It should be noted that, for two light guides 5 without a light source, only the opaque area faces the junction face 52 of the two light guides.

[0067] In the example described, the exit optics 6 has a smooth, essentially dome-shaped exit face.

[0068] The optical module 1 includes a projection optical system 8. Figure 1 ] in the example of FIG. 1 , the projection optical system 8 is a projection lens 8 having a focal plane 81 which substantially passes through the upstream face of the mask 7.

[0069] This projection lens 8 is therefore arranged to project the secondary image formed by the mask 7 onto the ground in the nearby field. The pattern projected onto the ground then has an outline defined by the perimeter of the window 72, so that, after inversion by the projection lens 8, these outlines are completely defined by the sharp edges in the image projected onto the ground.

[0070] [ Figure 4 ] shows a lighting system 10 for a motor vehicle according to an example of an embodiment of the present invention.

[0071] The lighting system 10 includes a headlamp 11. Figure 1 ]The optical module 1 is arranged in the headlight 11.

[0072] The lighting system 10 comprises a control unit (not shown) which receives instructions from the computer of the motor vehicle to perform the lighting function and which controls the LEDs 2 of the optical module 1 according to these instructions.

[0073] Upon receiving an instruction to initiate a function of the sequential turn indicator type, which instruction is generated, for example, by a computer when the motor vehicle changes lanes, the control unit cyclically controls the LEDs 2. For example, in a cycle, the control unit activates the lower right LED 2, the optical module 1 thus projects the image 10a formed from the joint surface 52 of the corresponding light guide 5 through the mask 7 onto the ground in the vicinity of the vehicle. Then, the control unit activates the LEDs 2 on the diagonal line, the optical module 1 thus projects the image 10b formed from the joint surface 52 of the corresponding light guide 5 through the mask 7 onto the ground in the vicinity of the vehicle, the previous LED 2 remaining activated. Then, the control unit activates the remaining LEDs 2, the optical module 1 thus projects the image 10c formed from the joint surface 52 of the corresponding light guide 5 through the mask 7 onto the ground in the vicinity of the vehicle, the preceding LED 2 remaining activated. Finally, the control unit deactivates all the LEDs 2.

[0074] It will therefore be appreciated that the optical module 1 thus performs a direction indicator function which can in particular complement the sequential direction indicator function performed by the rear lights of the vehicle. Since the images 10a, 10b and 10c are projected onto the ground in the vicinity of the vehicle, these images can be easily perceived by road users travelling on the right side of the motor vehicle. The sub-patterns generated from the image of the joint surface 52 of the light guide 5 through the window 72 of the mask 7 can in particular be in [ Figure 4 ] as seen in .

[0075] It should be noted that in order to form other patterns of different shapes and / or composed of a different number of sub-patterns, the main optical system 4 can remain the same, and all that needs to be done is to modify the arrangement and / or number of LEDs, and / or modify the shape and / or number of areas 73 through which light can pass.

[0076] The above description clearly explains how the invention achieves the set objectives, namely to provide a compact and efficient optical module allowing the generation of complex patterns (for example patterns containing details within the pattern itself, or even patterns composed of several separate sub-patterns) from a single light source, and / or allowing the clarity of the pattern projected onto the ground to be improved, the optical module combining a primary optical system capable of forming primary images from a light source with a mask capable of modifying these primary images to form secondary images.

[0077] In any case, the invention is not limited to the embodiments specifically described in this document and extends in particular to any equivalent devices and any technically operable combination of these devices. In particular, it is conceivable to use light source types other than the ones described. Other shapes of the joining surfaces or windows of the mask are also conceivable. A primary optical system comprising a single primary optical component can also be provided. Types of primary optical components other than light guides are also conceivable, in particular collimators, lenses or microlenses, reflectors, or combinations of primary optical components of various types. Other embodiments of the mask are also conceivable. Lighting functions other than the ones described are also conceivable, in particular other functions for indicating a change of path of a motor vehicle (such as a reversing indicator or a lane change indicator), driver assistance functions, or vehicle-to-vehicle communication functions, or even functions for signaling a manual driving mode or an automated driving mode.

Claims

1. An optical module (1) for a lighting system (10) for a motor vehicle, the optical module comprising: a. at least one light source (2); b. an integrated primary optical system (4), comprising at least one primary optical component (5), the primary optical component being arranged to form a primary image from the light source; c. a mask (7) placed downstream of the primary optical component and having at least one opaque area (71) and a window (72) formed in the opaque area, the window being arranged facing the primary optical component so as to form a secondary image from the primary image, the segment (54) of the integrated primary optical system extending through the window; d. A projection optical system (8), which is arranged to project the secondary image formed by the mask onto the ground.

2. An optical module (1) according to the preceding claim, characterized in that The primary optical system (4) is produced by overmolding at least one material onto the mask (7).

3. The optical module (1) as claimed in any one of the preceding claims, wherein: The projection optical system (8) has a focal plane (81) which substantially passes through the mask (7) or is substantially located between the primary optical component (5) and the mask.

4. The optical module (1) according to any one of the preceding claims, characterized in that The optical module comprises a plurality of selectively controllable light sources (2), the integrated primary optical system (4) comprises a plurality of primary optical components (5), wherein each primary optical component is arranged to form a primary image from one of the light sources, and wherein the mask (7) comprises a plurality of windows (72), each window being arranged to face one of the primary optical components so as to form a secondary image from the primary image formed by the primary optical components, a section (54) of the integrated primary optical system extending through each of the windows.

5. An optical module (1) according to the preceding claim, wherein The primary optical components (5) are arranged in a matrix array.

6. An optical module (1) according to any one of the preceding claims, characterized in that The primary optical system (4) comprises an exit optical component (6), the primary optical component comprising a light incident surface (51) and a joining surface (52), the light source being placed facing the incident surface, the joining surface connecting the primary optical component to the segment (54) extending through the window (72), the segment being connected to the exit optical component.

7. An optical module (1) according to the preceding claim, characterized in that The joining surface (52) of the primary optical component (5) and the upstream surface of the mask (7) are located substantially in the same plane.

8. The optical module (1) according to any one of claims 6 and 7, wherein: The primary optical component (5) comprises a primary light guide, the incident surface (51) of the light guide being connected to the junction surface (52) of the light guide via an envelope (53), so that each point on the outer shape of the incident surface is connected to a point on the outer shape of the junction surface via a straight line.

9. The optical module (1) according to any one of claims 6 to 8, wherein: The projection optical system (8) has a focal plane (81) that substantially passes through the joint surface (52) at which the primary optical component (5) joins the segment (54).

10. A lighting system (10, 100) for a motor vehicle, comprising an optical module (1, 20) as claimed in any one of the preceding claims.

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