CN112771304A - Lighting module for a motor vehicle and lighting and/or signalling device comprising such a module - Google Patents

Abstract

The invention relates to a lighting module for a vehicle, comprising: a light source (21), a pixelated and digital imaging system, and input optics (22) located in the path of light from the light source (21) and between the light source (21) and the pixelated and digital imaging system to transmit a transmitted portion of the light from the light source (21) towards the pixelated and digital imaging system, the illumination module comprising a prism (26) comprising a first face (26a), a second face (26b) and a third face (26c) and being configured to: transmitting the transmitted portion of the light between the first face (26a) and the third face (26c) towards the impact surface (24); reflecting the light redirected by the impinging surface (24) by total internal reflection at the first face (26a) to form reflected light; the reflected light rays are redirected towards the second face (26 b). An interface of a solid having a selected optical index is disposed between a window associated with the imaging system and a face of the prism.

Description

Lighting module for a motor vehicle and lighting and/or signalling device comprising such a module

Technical Field

The invention relates in particular to a lighting module for a motor vehicle and to a lighting and/or signalling device provided with such a module.

Background

A preferred application relates to the automotive industry, for the equipment of vehicles, in particular for the production of devices capable of emitting light beams, also known as lighting and/or signalling functions, which are generally in compliance with regulations. For example, the invention may enable the generation of a light beam of the pixelized type, preferably of high resolution, particularly for signalling and/or participating in lighting functions in front of the vehicle. The light beam may be used to display pictograms or patterns that vary at the level of the projection surface of the output light.

A signaling and/or lighting lamp of a motor vehicle is a lighting device comprising one or more light sources and an outer lens close to the lamp. Briefly, a light source emits light to form a light beam that is directed toward an outer lens to create an illumination area that transmits light to the exterior of the vehicle. These functions must comply with regulations, particularly in terms of illumination intensity and viewing angle. Heretofore, known lighting and signaling modules have been adapted to emit light beams, such as:

-a low beam, which is directed downwards, sometimes also called low beam, and is used when there are other vehicles on the road;

-a high beam, which is free of cut-off and is characterized by a maximum illumination on the vehicle axis;

-a fog beam characterized by a flat cut-off and a very wide illumination;

signal lamps for town traffic, also called town lamps.

Recently, techniques have been developed which enable the production of high-definition pixelated or segmented light beams with a definition of at least 1000 segments, in particular by means of microelectromechanical systems (MEMS) devices or nanoelectromechanical systems (NEMS) devices. Considering the great flexibility of shapes and patterns allowed by microelectromechanical systems devices or nanoelectromechanical systems devices, and since the price of these systems tends to decrease, these systems tend to be installed for more and more important functions, in particular in headlamps of vehicles. Fig. 1 gives an example of a pixellated and digital imaging system device in the form of a matrix of micromirrors 13 in a beam-projection module. Light source 11 generates light in the direction of optical device 12 so that a light beam can be produced that will impinge upon reflective surface 14 of micro-mirror matrix 13. Depending on the controlled tilt of the mirror, the light is redirected to the projection device 15 or to a blind spot to avoid participating in active illumination.

In some cases, this is assumed to be a strong output illumination, and in particular sufficient to meet luminous flux regulations. However, it is difficult to achieve strong illumination using the apparatus shown in fig. 1. Obviously, enlarging the lens used by the input device 12 or moving the lens closer to the micromirror matrix 13 quickly causes a problem of interference with the lens used as the projection device 15. In the example shown, the envelope of the light beam, delimited by the rays a1, a2, is located at the point of interference with the edge of the projection means 15; similarly, the light rays b1, b2 redirected by the matrix 13 are transmitted by the device 15 as light rays c1, c2 at the point of interference with the input device 12. In view of this limitation, patent document WO2017/143371a1 discloses a headlamp for a motor vehicle comprising a micromirror matrix and a pair of light emitting diode light sources, each light emitting diode light source being associated with a lens for focusing a light beam onto a reflective surface of the micromirror matrix. This repetition of the light sources significantly increases the luminous flux emitted from the head lamp. However, this inevitably increases the cost and overall size.

Disclosure of Invention

The present invention aims to at least partially solve the disadvantages of the prior art.

In one aspect, the invention relates to a lighting module for a motor vehicle, the lighting module being configured to produce an output light beam, the lighting module comprising: a light source comprising at least one light emitting diode, a pixelated and digital imaging system, and input optics positioned in the path of light rays from the light source and between the light source and the pixelated and digital imaging system, so as to transmit at least a portion, referred to as the transmitted portion, of the light rays from the light source towards an impact surface of the pixelated and digital imaging system.

Advantageously, the illumination module comprises a prism comprising a first face, a second face and a third face, and the prism is configured to:

-transmitting at least a portion of the light rays from the transmitted portion between the first face and the third face towards the impact surface;

reflecting at least a portion of the light redirected by the impingement surface by total internal reflection at the first face, forming reflected light;

-redirecting at least a portion of the reflected light rays towards a projection area via the second face.

Further, a window is provided between the impact surface and the third face; and a solid interface joining the third face to a face of the window disposed to face the third face.

According to one advantageous possibility, the material of the interface, the material of the window and the material of the prism have the same optical index or have optical indices which differ from one another by not more than 10%. This eliminates or greatly limits the unwanted reflections caused by fresnel's law, all of which are more favorable to the efficiency of the module.

Thus, the light rays are diverted along their path from the light source to the projection device and are at least partially diverted due to the prism. The functions of the prism include: transmitting light from a light source upstream of an imaging system; and downstream of the imaging system, total internal reflection is carried out, which enables an angular modification, advantageously a large angular modification, of the light rays so as to redirect the light rays exiting the prism in the direction of the projection means. The prism allows for large angular variations in the direction of the beam between the beam upstream of the imaging system and the beam downstream of the imaging system.

Therefore, it is easy to adjust the position and angle of the optical device at the input without being inconvenienced with respect to consideration of the overall size of the optical projection device, as compared with the related art shown in fig. 1. It may be advantageous to move the input optics closer to the imaging system and/or the diameter of the input optics may be increased (increased illumination is directly associated with increased diameter of the lens). The illumination efficiency of the light beam impinging on the imaging system is higher despite the use of the led light source, which therefore makes it possible to obtain a satisfactory output illumination.

Furthermore, the assembly of the window to the third face of the prism by means of a solid interface, for example an adhesive, ensures continuous transmission of the light between the two paths. Thus, reflection phenomena that may occur at the solid/air/solid interface are avoided; now, such undesired reflections may produce, at the same time as the desired effective light beam, a re-emission of disturbing light rays and a projection of disturbing light rays onto the road, which in particular limits the potential of the pixelated light beam for applications in the automotive field, in particular in applications involving an anti-glare high beam. Although the imaging device and optical elements are currently considered to be complementary components separate from the illumination module, the present invention eliminates this bias and more closely associates the imaging device and optical elements by assembling the faces of the window and prism of the imaging device without a gap of air. The presence of the interface also helps to accommodate changes in the optical index of the ray path that are currently automatically encountered with air. According to a preferred aspect, the optical indices are selected to be close to or the same, as described below.

According to another aspect, the invention also relates to a motor vehicle lighting and/or signaling device equipped with at least one lighting module. The apparatus may include at least one additional module including an additional module configured to generate a substantially low beam and/or an additional module configured to generate a substantially high beam.

The pixelated beam may advantageously constitute an effective complement to another beam or even several other beams. In particular, in a preferred case, the device comprises an additional module configured to generate a substantially low beam and an additional module configured to generate a substantially high beam, and wherein the output beam of the module partially crosses said substantially high beam and/or said substantially low beam.

The invention also relates to a vehicle equipped with at least one module and/or device according to the invention.

Preferably, the interface is a polymeric optical adhesive.

The maximum thickness of the interface may be less than 1mm, even 0.5 mm.

Preferably, the third face and the face of the window are parallel. Thus, the thickness of the interface is constant.

According to a particularly advantageous embodiment, the module is such that the second face and the third face are carried by two mutually perpendicular planes.

Furthermore, the lighting module preferably comprises optical means for projecting the output light beam, which at least partially receives at least a portion of the redirected light rays.

Advantageously, the optical projection device has an optical axis perpendicular to the second face.

Optionally, the optical projection device has an optical axis forming an obtuse angle with the average direction of the transported part. This possibility is very useful for limiting the overall size and provides a large degree of freedom in the size of the lens used for the input optical device.

According to one non-limiting case, the third face is parallel to the impact surface. Advantageously and preferably, the third face comprises an anti-reflection coating. This avoids ghost images due to strong reflections from the mirror on the third face.

In one embodiment, the prism is made of a material having an Abbe number greater than or equal to 50.

Advantageously, the prism is made of PMMA or crown glass.

Optionally, a window is disposed between the impact surface and the third face.

According to one example, the first face of the window is located in front of the impact surface and comprises an anti-reflection coating. This avoids ghost images that may occur on the window due to the strong reflection of the mirror.

Advantageously, the anti-reflective coating is configured to reflect less than 4%, preferably less than 2% of light in the visible spectrum.

Preferably, the average direction of said transmitted portion forms an angle between-20 ° and +20 °, inclusive, with the normal to the first face.

Preferably, the distance separating the impact surface from the third face is less than or equal to 2mm, and preferably less than or equal to 1 mm.

In one embodiment, the pixilated and digital imaging system includes a matrix of micromirrors.

The output beam may be configured to project at least one pictographic pattern.

In a preferred embodiment, the module is configured to project a light beam in front of the motor vehicle.

Drawings

Other features and advantages of the invention will be better understood with the aid of the description of an example and of the accompanying drawings, in which:

figure 1 is a diagram of the projection of a pixelated light beam according to the prior art;

figure 2 shows an embodiment of the invention.

Detailed Description

Unless specifically stated otherwise, the technical features described in detail for a given embodiment may be combined with technical features described in the context of other embodiments described by way of non-limiting example.

In the features described below, terms relating to "vertical", "horizontal" and "lateral", or equivalents thereof, are understood with respect to the position in which the lighting module will be installed in the vehicle. The terms "vertical" and "horizontal" are used in this specification to specify directions consistent with the following orientation: for the term "vertical," an orientation perpendicular to the horizontal plane; and for the term "horizontal," an orientation parallel to the horizontal plane. They should depend on the operating conditions of the devices in the vehicle. The use of these terms does not imply that minor variations from the vertical and horizontal directions are excluded from the present invention. For example, a tilt of about ± 10 ° with respect to these directions is considered to be a slight variation with respect to both preferred directions.

The inventive device comprises at least one module for generating a pixelated beam, but preferably the inventive device also projects at least one other beam by means of at least one other module. Thus, the apparatus of the present invention may be complex and associated with multiple modules that may also share components.

In the context of the present invention, low beam refers to a beam that is employed in the presence of vehicles passing in opposite directions, and/or followed vehicles, and/or other elements (persons, obstacles, etc.) located on or near the traffic lane. The light beam has a downward average direction. The beam may be characterized by: there is no light above a plane inclined 1% downwards on the side of the traffic lane in the opposite direction and no light above another plane inclined 15 degrees to the previous plane on the side of the traffic lane in the same direction, both defining a cut-off in compliance with european regulations. The downward upper cut-off serves to prevent dazzling of other users occurring in road scenes on the roadside or in front of the vehicle. The past low beam from a simple headlamp has improved and the low beam function can be associated with other lighting characteristics still considered to be low beam functions in the context of the present invention.

This specifically covers the following functions:

an AFS (advanced front lighting system) light beam, which provides in particular other types of light beams. These other types of light beams are in particular the so-called BL (bent light) function, which can be subdivided into the so-called DBL (dynamic bent light) function and the so-called FBL (fixed bent light) function.

-a town light beam for illumination in a town. This function widens the light beam of the low beam type while slightly reducing the range of the light beam of the low beam type;

-a highway light beam for highway lighting, resulting in highway functionality. This function increases the range of the low beams by concentrating the luminous flux of the low beams at a horizontal position of the optical axis of the projection device concerned;

-an overhead beam. This function modifies the usual low beam so that the signalling mast situated above the road is satisfactorily illuminated by means of the low beam;

AWL (bad weather illumination) light beam.

The function of the basic high beam is to illuminate the scene in front of the vehicle over a wide range and over a large distance, typically about 200 meters. By the illumination function of this basic high beam, the beam is mainly located above the horizontal. The substantially high beam may have an illumination optical axis extending, for example, slightly upwards.

The apparatus may also be used to provide other lighting functions via or independently of the functions described above.

As described above, one aspect of the present invention relates to a module for generating a pixelated output beam, i.e. a beam processed by a pixelated and digital imaging system, and by controlling the imaging system, provides great flexibility in the beam configuration actually projected. The terms "pixelated and digital imaging system", "pixelated light imaging system", and equivalents thereof, are defined as a system that emits a light beam formed from a plurality of sub-beams, each of which is controllable independently of the other sub-beams. The system may be, for example, a micromirror matrix 23, a liquid crystal device, Digital Light Processing (DLP) technology as shown herein. The micromirror matrix is also called a "digital micromirror device" (DMD).

Each independently controllable sub-beam forms a pixelated light ray. The micromirror matrix is controlled by control electronics. Each micromirror preferably has two operating positions. The so-called active position corresponds to the orientation of the micromirror that reflects the incident beam towards the output mirror. The so-called passive position corresponds to the orientation of the micromirror that reflects an incident light beam towards the absorbing surface, that is, in a direction different from the direction towards the output refractor. Typically, this type of imaging system is implemented in a micro-electromechanical system (MEMS), which in this application also includes a nano (electromechanical) system (NEMS).

In a manner known per se, the light source 21 is used to illuminate an impact surface 24 of the pixelized imaging system, said impact surface 24 being, for example, a reflective surface of a micromirror of the micromirror matrix 23, and the light rays processed by the pixelized imaging system are redirected for projection, typically by means of an output optical element such as a headlight outer lens or a projection lens. In general, the present invention may use Light Emitting Diode (LED) light sources. These LED light sources may be organic LEDs. In particular, these LEDs may comprise at least one chip adapted to emit light, advantageously of variable intensity, according to the lighting and/or signaling function to be implemented. Furthermore, here the term "light source" refers to a set of at least one elementary light source (e.g. LEDs) capable of generating a flux for producing at least one light beam at the output of the module of the invention. In an advantageous embodiment, the output face of the light source is rectangular in cross-section, as is common for LED chips. By way of non-limiting example, the light source 21 is configured to generate a luminous flux in excess of 3000lm, and for example of the order of 4000 lm.

In the automotive field, the benefits of a pixelated beam and the extended functionality allowed by the pixelated beam are apparent. However, their integration into vehicles in combination with systems for projecting other beams has not been developed on a large scale and has resulted in large overall size limitations.

Fig. 2 shows an embodiment of the invention that enables an improved relative placement of the light source and the input optics compared to the prior art.

In the direction from upstream to downstream along the path of the light rays, it can be seen that there is a light source 21, which light source 21 may be of the type described above. The light source 21 is preferably configured to emit into half-space from a rectangular-shaped emission area. At least a portion of the light emitted by the light source 21 is optically processed by the optical device 22. The optical device 22 may comprise one or more lenses having a more or less complex shape.

In fig. 2, the optical means 22 take the form of a lens having an entrance face 22a for receiving light from the light source 21 and an exit face 22b for projecting in the direction of the rest of the module. At the output of the optical device 17, at least one so-called transmitted portion "a" of the light being processed will impinge on the surface of the pixellated and digital imaging system, here on the micromirror matrix 23. However, according to the present invention, light first enters through the prism 26, passing through the first face 26a of the prism 26.

Preferably, the first face 26a forms an acute angle with the average direction of the transmitted portion "a" of the light from the light source 21. More preferably, the average direction forms an angle between-20 ° and +20 °, inclusive, with the normal to the first face 26 a. The angle formed between the first face 26a and the third face 26c is preferably between and including 40 ° and 50 °.

In general, it is desirable to fabricate prism 26 using a transparent material that advantageously has a high Abbe number (unombre d' Abbe), which is preferably greater than or equal to 50. The transparent material may be Crown glass (verre Crown) or Polymethylmethacrylate (PMMA).

The light rays entering the prism 26, indicated by "a" in fig. 2, are directed towards a third face 26c of the prism 26, the imaging system, which in the example shown is a micromirror matrix 23, being positioned facing this third face 26 c. The impact surface 24 (corresponding to the exposed surface of the micromirror) is advantageously parallel to the third face 26c, which third face 26c is preferably planar. The impact surface 24 is protected by a window 27, a first face 27a of said window 27 being positioned facing the impact surface 24. The second face 27b of the window 27 is positioned to face the third face 26 c. The second face 27b and the third face 26c are spaced apart from one another so that there is a gap between the second face 27b and the third face 26c, which gap is filled by the interface 30, so that there is no air gap remaining between the interface 30 and the faces 26c, 27 in the path of the light rays.

The distance separating the impact surface 24 from the third face 26c is advantageously limited and may be, for example, less than 2mm or even less than 1mm, and is preferably 0.5 mm. The presence of the window 27 can be used to adjust the gap without risk of damaging the impact surface 24.

Thus, the window 27 and the prism 26 are connected by an interface 30. The interface 30 may also allow for adjustment of the overall thickness of the transmission of light exiting the prism toward the impingement surface 24. More precisely, the interface 30 is located between the second face 27b of the window 27 and the third face 26c of the prism 26 and is in contact with the second face 27b of said window 27 and with the third face 26c of said prism 26. Advantageously, said third face 26c is parallel to said second face 27b, so that the thickness of the interface 30 is continuous. Here, the thickness refers to the dimension of the interface 30 perpendicular to the plane concerned.

One aspect of the interface 30 is to completely fill the gap between the prism and the window with a solid medium. For this reason, it is sufficient that the interface 30 is in contact with each of the third face 26c and the second face 27b even if not attached to those faces. However, the interface may also provide a mechanical assembly effect such that the interface forms a coherent assembly with at least the prism and/or the window.

The interface 30 is preferably made of a layer of transparent material, preferably a single layer of transparent material, in particular an optical adhesive. In terms of process steps, a film of the precursor liquid adhesive of the interface may be provided on the second face 27b or the third face 26c, after which the other of said faces 27b, 26c is placed on the film and the adhesive is crosslinked. In particular, an ultraviolet-polymerized adhesive may be used. For example, the adhesive may be sensitive to ultraviolet light in a wavelength range between and including 320 nanometers to 380 nanometers. Crosslinking by heat treatment is also possible.

It should be noted that the interface 30 forms a solid part. By solid is meant a state of the material which is neither gaseous nor liquid, which state does not exclude an interface 30 consisting of a soft material, such as an elastomer or a paste.

The interface 30 forms a solid continuum between the prism 26 and the window 27. In order to make this continuity more efficient from an optical point of view, it is advantageous that the optical index of the interface 30 is the same as or close to the optical interface of the material of the window 27 and/or of the material of the prism 26. For example, windows and prisms made of crown glass, in particular with an index of 1.52, or polymethyl methacrylate (PMMA) prisms with an optical index of 1.49 and glass windows 27 (in particular made of crown glass with an optical index of 1.52) may be used. The material of the adhesive interface 30 is then selected to be the same or similar to those indices. For example, an Optical adhesive sold by Norland Products Incorporated ("Norland Optical adhesive 83H") having an Optical index of 1.56 sold by Norland Products corporation "Norland Optical adhesive 83H" may suffice. By "similar" is meant that the magnitudes of the optical indices (grandeur) differ by no more than 10%, and/or that the optical index values differ by no more than 0.15. The optical index of the prism, the optical index of the window and the optical index of the interface are preferably all three indices in the index value range of 0.15 and/or 10%. However, a larger interval is acceptable, particularly when the optical index of the interface has a value intermediate between that of the prism and that of the window (which is generally preferred if the optical indices are different). In this case, the optical index of the window and the optical index of the prism may be such that each differs from the value of the optical index of the interface by no more than 10% and/or by no more than 0.15.

In the embodiment shown, the aim is to eliminate or at least limit the interference effects that may result from the reflection at the first face 27a of the window of the light rays that have reached the impact surface 24 and have been reflected. To this end, the window 27 advantageously has an antireflection coating 28, which antireflection coating 28 may have a novel composition and is in particular configured to produce a maximum reflection of 4% or even 2% in the visible spectrum. Preferably, the antireflective treatment is selected to have a maximum reflection of 1% in the visible spectrum.

The impact surface 24 defined by the collection of micromirrors is preferably rectangular in shape. The impact surface 24 is preferably located in the following plane: perpendicular to the plane carrying the second face 26b of the prism 26 and/or parallel to the optical axis of the projection device 25.

Depending on the orientation of the mirror, light is reflected in a manner that participates in projecting the beam, or in a passive manner. Thus, the configuration of the pixelated beam can be controlled at will. In the case shown, the active light ray "c" is directed so as to re-enter the prism 26 via the third face 26 c. This path of light is configured such that the active light ray "c" again reaches the first face 26 a. However, the angle of the light rays at this time with respect to the first face 26a is such that total internal reflection occurs in the prism 26, thereby forming reflected light rays "d" that are directed toward the second face 26b of the prism 26.

The outgoing light ray "e" is directed towards a projection device 25, which projection device 25 is typically a projection lens or comprises a projection lens. In the case shown, the projection means 25 is a plano-convex lens, the entry face 25a of which is planar and the exit face 25b of which is convex. Reference numeral "f" denotes an example of the projection light.

Advantageously, the prism 26 is configured in terms of angle and material selection such that all light from the input device 22 is transmitted to the micromirror matrix 23 and such that all light reflected by the micromirror matrix 23 is reflected by the first face 26 a. It should be noted that the region of the first face 26a through which the light ray "a" enters the prism 26 and the region of the first face 26a through which the light ray "c" of the first face 26a again arrives to be reflected may overlap.

The invention is not limited to the described embodiments but encompasses any embodiment in accordance with the spirit of the invention.

Reference numerals

11 light source

12 optical device

13 micro mirror matrix

14 reflective surface

15 projection optical device

21 light source

22 incident optical device

22a incident surface

22b exit surface

23 micro mirror matrix

24 impact surface

25 projection optical device

25a incident surface

25b exit surface

26 prism

26a first side

26b second side

26c third surface

27 window

27a first side

27b second side

28 anti-reflective coating

29 optical axis

30 interface

Claims (16)

1. A lighting module for a motor vehicle, the lighting module configured to produce an output beam, the lighting module comprising: -a light source (21) comprising at least one light emitting diode, -a pixellated and digital imaging system, and-input optics (22) located on the path of the light rays coming from said light source (21) and between said light source (21) and said pixellated and digital imaging system, so as to transmit at least a part, called transmitted part, of the light rays coming from said light source (21) towards an impact surface (24) of said pixellated and digital imaging system, characterized in that said illumination module comprises:

-a prism (26) comprising a first face (26a), a second face (26b) and a third face (26c), and configured to:

o transmitting at least a portion of the light rays from the transmitted portion between the first face (26a) and the third face (26c) towards the impact surface (24);

o reflecting at least a portion of the light redirected by the impingement surface (24) by total internal reflection at the first face (26a) forming reflected light;

o redirecting at least a portion of said reflected light rays towards a projection area via said second face (26 b);

-a window (27) arranged between the impact surface (24) and the third face (26 c); and a solid interface (30) joining the third face (26c) to a face (27b) of the window (27) arranged facing the third face (26 c);

characterized in that the material of the interface (30), the material of the window (27) and the material of the prism (26) have the same optical index or have optical indices which differ from one another by not more than 10%.

2. Module according to the preceding claim, wherein the interface (30) is a polymeric optical adhesive.

3. The module according to any one of the preceding claims, wherein the maximum thickness of the interface is less than 1mm, or even 0.5 mm.

4. The module of any one of the preceding claims, wherein the third face (26c) is parallel to a face (27b) of the window (27).

5. The module according to any one of the preceding claims, wherein the second face (26b) and the third face (26c) are carried by two mutually perpendicular planes.

6. The module of any one of the preceding claims, further comprising an optical arrangement (15) for projecting the output light beam, the output light beam at least partially receiving at least a portion of the redirected light beam.

7. Module according to the preceding claim, wherein the optical projection device (15) has an optical axis (29) perpendicular to the second face (26 b).

8. The module according to either of the two preceding claims, wherein the optical projection device (15) has an optical axis (29) forming an obtuse angle with the average direction of the transported sections.

9. The module of any one of the preceding claims, wherein the prism (26) is made of a material having an Abbe number greater than or equal to 50.

10. The module of any one of the preceding claims, wherein the prisms (26) are made of PMMA or crown glass.

11. The module according to the preceding claim, wherein the other face (27a) of the window, which is located in front of the impact surface (24), comprises an anti-reflection coating (28).

12. A module according to any one of the preceding claims, wherein the average direction of the transported portion forms an angle between-20 ° and +20 °, inclusive, with the normal to the first face.

13. The module of any one of the preceding claims, wherein the pixelated and digital imaging system comprises a matrix of micromirrors (23).

14. The module of any preceding claim, wherein the output beam is configured to project at least one pictographic pattern.

15. The module of any preceding claim, configured to project a beam of light in front of a motor vehicle.

16. A motor vehicle lighting and/or signaling device equipped with at least one module according to any one of the preceding claims.

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