FR3043168A1 - Device for projecting the light beam of a motor vehicle configured to project a pixelized image - Google Patents

Device for projecting the light beam of a motor vehicle configured to project a pixelized image Download PDF

Info

Publication number
FR3043168A1
FR3043168A1 FR1560489A FR1560489A FR3043168A1 FR 3043168 A1 FR3043168 A1 FR 3043168A1 FR 1560489 A FR1560489 A FR 1560489A FR 1560489 A FR1560489 A FR 1560489A FR 3043168 A1 FR3043168 A1 FR 3043168A1
Authority
FR
France
Prior art keywords
modules
light
image
projection
projector
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
FR1560489A
Other languages
French (fr)
Inventor
Idrissi Hafid El
Weicheng Luo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SA
Original Assignee
Valeo Vision SA
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Vision SA filed Critical Valeo Vision SA
Priority to FR1560489A priority Critical patent/FR3043168A1/en
Publication of FR3043168A1 publication Critical patent/FR3043168A1/en
Pending legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00Arrangements or adaptations of optical signalling or lighting devices
    • B60Q1/0029Spatial arrangement
    • B60Q1/0041Spatial arrangement of several lamps in relation to each other
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/16Laser light sources
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/176Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24-F21S41/28
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21LIGHTING
    • F21SNON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B60VEHICLES IN GENERAL
    • B60QARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q2400/00Special features or arrangements of exterior signal lamps for vehicles
    • B60Q2400/50Projected signs, i.e. symbol or information is projected onto the road

Abstract

A projection device for a motor vehicle configured to project a pixellated image light beam (26) through at least two modules (22a, 22b) forming a pixellated image projection assembly (24), said modules being configured to project two intermediate beams (26a, 26b) the addition of which forms said light beam. The at least two modules (22a, 22b) of the pixelated image projection assembly (24) are housed in a single projector (6a).

Description

The invention relates to the field of lighting and / or signaling, in particular for motor vehicles. It relates more particularly to a light beam projection device capable of projecting a pixelated image, and its integration in the projectors of a motor vehicle.

A motor vehicle is equipped with projectors, or headlights, intended to illuminate the road in front of the vehicle, at night or in case of reduced brightness, by a global light beam. These projectors, a left projector and a right projector respectively comprise one or more light modules adapted to generate and direct an intermediate light beam whose addition forms said overall light beam.

Until now, headlamps are commonly equipped with light modules capable of generating in particular a Route beam, which allows to strongly illuminate the road far ahead of the vehicle, and a passing beam, which provides a more limited illumination of the road, but still offering good visibility, without dazzling other road users. The projectors may be equipped with other modules to generate as an example a fog lighting beam and / or a signal beam for city traffic.

It is known to produce the Route beam by adding the passing beam and a complementary bundle, joined to the passing beam at a cut-off edge whose definition allows, when the passing beam is used alone, to not dazzle other users. The passing beam is generated by the single ignition of specific means while the Route beam is generated by the simultaneous switching on of the specific means to the passing beam and means specific to the first mode "high beam". In this way, we can distinguish Road modules and Code modules generating dipped beam headlamps.

In addition to these regulatory lighting functions, which are essential for the safety of all road users, automobile manufacturers and suppliers aim to offer devices that facilitate driving and in particular the presentation of information relating to the state of the vehicle. the detection of an emergency situation or the presentation of navigational information. For example, information projection devices on the windshield have been developed, to avoid the driver having to look away from the road scene to view this information.

The present invention is in this context of signaling device for projecting navigation information and / or (dis) operation of the vehicle, not aiming a projection on the windshield, only for the driver of the vehicle, but more generally on the road scene, upstream of the vehicle with respect to its direction of travel when it concerns information to be displayed by the occupants of the vehicle or downstream of the vehicle when it is is an information to be viewed by the occupants of a follower vehicle. The information to be displayed advantageously has a form of pictogram, easy to understand, and for example an arrow when the satellite navigation device associated with the vehicle detects a turn to come, or an exclamation point when an emergency situation. involves a quick immobilization of the vehicle, etc. For this purpose, an additional beam is superimposed on the main beam, this main beam corresponds to a passing beam or a Route beam, and in this additional beam is created a negative of the image that is to be projected.

In Figure 1, there is illustrated an example of pixellated image projection application on the ground upstream of a motor vehicle, in which it is intended to project an indication on the road to be followed by the driver. A main beam 1 is projected upstream of the vehicle, in order to illuminate the road scene in a regulatory manner. An additional beam 2 is projected in an area of this main beam, and a raster image 4 is created in this additional beam. In the case illustrated, a dark zone is formed inside the additional beam 2 to take the form of an arrow, so that this pictogram is cut in the additional beam and visible by the driver. In order to obtain a particularly visible image, an optimal contrast is sought between the dark part forming the pictogram and the remainder of the additional beam. It is therefore necessary to have a significant light intensity of the additional beam, within the limits of the regulations and to maintain the homogeneity of the beam. For this purpose, a plurality of pixelated image projection modules, and in particular two modules, are provided. , whose beams are superimposed to form the additional beam. The left intermediate additional beam 2a projected by the left projector and the right intermediate additional beam 2b projected by the right projector, the superposition of which forms the additional beam, have been made visible in FIG. An equal number of pixelated projection modules are disposed in each of the left and right headlights of the motor vehicle, and each of these modules are driven so that the dark areas 4a, 4b respectively associated with the left intermediate additional beam 2a, right 2b are superimposed to form a sharp pixelated image 4.

In Figure 2, there is illustrated a disadvantage of this type of application. Notably because of the vehicle attitude variations (which include pitch and roll, ie the two main phenomena incriminated, as well as the yaw that usually has no impact), the beams projected respectively by each of the modules Pixelated image projection may shift slightly. In the case of crossing beams or overlapping road bundles, this has little or no impact on the driver's visibility. It can be seen in FIG. 2 that in the case of two additional intermediate beams for the projection of pixellated images, this shift of an intermediate beam with respect to the other can generate a fuzzy image and therefore information, at best unpleasant to look for the driver, at worst distorted. The left intermediate additional beam is slightly shifted (in the direction of the arrow T visible in FIG. 2) and the pixellated image 4 is now blurred because formed by a dark zone 4a slightly offset from the dark zone 4b, which generates a central portion of the intensified image, due to the partial superimposition of the dark areas, with respect to the edge of the image. The invention is in this context and aims to provide a projection device for a motor vehicle, configured to project a light beam forming a pixellated image through at least two modules forming a pixelated image projection assembly , said modules being configured to project two intermediate beams whose addition forms said light beam, characterized in that said at least two modules of the pixelated image projection assembly are housed in the same projector housing.

Thus, it eliminates offsets in position, in a given pair of projectors, of a projector relative to the other, and without reducing the number of light modules of the pixelated image assembly and therefore without decreasing the luminous intensity of the beam emitted, which makes it possible to maintain good visibility of the information projected on the road upstream or downstream of the vehicle.

It is understood that by projector, one can just as easily have a projection device associated with projectors or front headlights of the vehicle that taillights.

It should also be noted that, by addition of the intermediate beams to form the light beam, one understands as well a superposition, complete or partial, that a juxtaposition of the beams intermediate in origin, the object of the invention being to preserve, by the presence of the modules in the same projector, the original arrangement of the intermediate beams with respect to each other, so as not to generate deformation of the pixelated image projected for the driver.

According to a first embodiment of the invention, at least one module of the pixelated image projection assembly comprises at least one light source, a plurality of mobile micro-mirrors and an optical projection system for projecting out all or part of the pixellated image. In this context, the micro-mirrors may be arranged to deflect the light emitted by the light source, said micro-mirrors being movable between two positions, including a first active position in which the light is diverted towards the optical projection system. and a second passive position in which light is diverted to light absorbing means.

According to another embodiment, at least one module of the pixelated image projection assembly comprises at least one laser source, a pivoting mirror capable of deflecting the rays emitted by the laser source towards a conversion means of wavelength disposed substantially at the focus object of a projection optical system, for projecting all or part of the pixelated image.

It is understood that one could combine these two embodiments and have an imaging system with two modules embedded in the same housing and among which a first housing is of the DMD type (according to the acronym meaning "Digital" Mirror Device "), with movable micro-mirrors forming a ray deflection matrix, while a second housing is of the" picture beam "type, with a device in which the emitted light intensity is modulated to form an image on a beam. wavelength conversion means.

According to a series of features of the invention, taken alone or in combination, and bearing this time on the integration of the light beam emitted by the pixelated imaging system into a regulatory global light beam, it can be provided that: the beam bright pixelated image is an additional beam in addition to a main beam; the additional beam overlaps with a zone of less illumination generated in said main beam; the main beam is generated by projection modules of a passing beam distributed equally over the two projectors of the vehicle; The invention also relates to a motor vehicle headlamp, in particular a headlamp, comprising a plurality of light modules configured to generate a specific type of beam, characterized in that it comprises at least two modules of a projection assembly of a pixellated image.

It will be possible in particular to provide that the two modules of the pixelated imaging projection assembly are arranged in the vicinity of one another, without other light modules interposed between them. It can also be aimed at an arrangement in which these two modules are positioned as close as possible to the center of the vehicle. The invention also relates to a set of two projectors of a motor vehicle, including a left projector and a right projector, characterized in that one of the two projectors comprises all the modules of a projection assembly of a pixellated image. It is advantageous that, in this context of imbalance in the number of modules of the pixelated imaging projection assembly between the projectors, the total number of light modules, that they are associated with the pixelated imaging projection assembly or another projection set, equal from one projector to another.

In particular, it is possible to provide that the projector comprising all the modules of the projection assembly of a pixelated image is the projector disposed on the driving side of the vehicle. In other words, it is expected that the projector comprising all the modules of the projection assembly of a pixelated image is the projector, front or rear, left when the vehicle has a steering wheel on the left, and the right projector when the vehicle has a steering wheel on the right. The two modules are thus brought closer to the position of the conductor and thus the incidence of angular variations in the projections by these two modules is reduced, thereby reducing the phenomenon of parallax which could lead to a blurred visualization of the pixelated image.

In the case of application to a set of two front projectors, said set comprising modules for projecting a passing beam, projection modules for a Route beam and projection modules for a pixelated image, it will be possible to providing that a first projector comprises all the modules of the projection assembly of a pixelated image and that the second projector comprises a greater number of Route beam projection modules than the first projector. The invention also relates to a motor vehicle comprising a set of two projectors, as they have just been delivered. Other features and advantages of the present invention will appear more clearly with the aid of the description and the drawings, among which: FIGS. 1 and 2 are previously mentioned illustrations on which the disadvantages of the prior art can be observed in generating a pixellated image; FIG. 3 is a schematic representation of a regulatory light beam emitted by one and the other of two projectors of a motor vehicle, and of an additional beam incorporating a pixelated image in the sense of the invention, that is to say obtained by the projection at the output of two light modules grouped in the same projector, here the left projector; FIG. 4 is a schematic representation of an embodiment of an imaging system capable of equipping a module with a projection assembly of a pixelated image according to the invention; and FIGS. 5 and 6 are diagrammatic representations of a right (FIG. 5) and left (FIG. 6) projector illustrating the implementation according to the invention of various light modules among which the modules of an imaging assembly. pixelated grouped in the same projector, here the projector left.

A preferred embodiment of a pixellated image projection device upstream or downstream of a motor vehicle will be described, based in particular on FIGS. 3 to 6. This preferred embodiment consists of the following: implementation of a pixelated imaging assembly in a projector before a pair of front projectors, it being understood that such a system could be implemented at the rear of the vehicle without departing from the context of the invention.

In Figure 3, there is shown two projectors of a motor vehicle, including a left projector 6a and a right projector 6b, disposed on either side of a general optical axis 8 of the vehicle lighting means. Each projector comprises a housing 10 forming a housing of a plurality of light modules and closed by an ice. The various light modules are able to generate all or part of a regulatory light beam or comfort. An overall light beam 12 is illustrated in FIG. 3, corresponding here to a passing beam formed by the combination of intermediate light beams 12a and 12b emitted respectively by the left projector 6a and the right projector 6b.

Each projector comprises at least one Code module 14 associated with the projection of a passing beam, these modules being distributed equally between the left projector and the right projector. In FIG. 3, a left code module 14a is provided in the left projector 6a for generating the projection of an intermediate crossing beam 12a and a right Code module 14b is provided in the right projector 6b for generating the projection of a beam. intermediate of crossing 12b. The intermediate crossing beams each have a zone superimposed on each other to form a zone of greater luminous intensity 16 substantially at the upper end of the overall light beam 12 centered on the optical axis. A zone of lower illumination 18 is arranged under this zone of higher light intensity, by cutting the two intermediate beams which do not cover this zone 18.

Furthermore, each projector comprises one or more Route modules 20 capable of generating a Route beam, id not shown. In what follows, the pixelated image is projected in the beam crossing, but it is understood that one could without departing from the context of the invention project such a pixellated image in the beam Route.

In the illustrated example, it can be observed that the left projector 6a comprises a number of Route modules 20, id, different from the number of Road modules that includes the right projector 6b, here three.

Schematically in FIG. 3, the modules are grouped by lighting function and it is notable that each projector comprises at least one Code module 14 for the crossing lighting function and at least one Route module 20 for the function. Road lighting.

According to the invention, a single projector comprises light modules 22a, 22b of a pixelated image projection assembly 24. Here, the two modules forming such an assembly are grouped together in the left projector 6a. These two modules participate in the projection of an additional beam 26 in which a pixellated image 4 is made distinct, the additional beam 26 being projected here in the zone of lower illumination 18 to increase the contrast between the global light beam 12 and the image 4 and make this image, relating to a state of operation or a navigation characteristic of the vehicle, particularly visible to the driver. In the case shown, the zone of low illumination 18 covers a central low part of the envelope of the area illuminated by the overall light beam 12, but it will be understood that the zone of less illumination could be arranged differently with respect to the beam of crossing , without departing from the context of the invention, and that in particular the area of lower illumination 18 could be entirely surrounded by a more illuminated area.

This FIG. 3 thus presents a practical illustration of the additional beam 26 for the signaling of practical information projected on the road so as to be visible to the driver. In the projection device according to the invention, a pixelated image projection assembly 24 participating in the projection of the additional beam 26 in the form of pixellated rays has been controlled so as to generate a shaded zone included in the additional beam 26 and corresponding at the contours of a pictogram 4 in the form of an arrow. The pixelated image projection assembly 24 is configured to project this additional beam 26 forming a pixelated image, generated on command according to instructions received by a control module, not shown here. The additional beam 26 is projected at least partly into the zone of lower illumination 18. The image is formed by the addition of two additional intermediate beams 26a, 26b each generated by a module participating in the image projection assembly pixelated.

It will be possible to propose such pixelated image projection modules according to several techniques making it possible to control the output rays so as to produce a particularly precise and modifiable beam definition forming a plurality of pictograms suited to the driving situation.

The modules comprise a pixelated imaging system, or also called digital imaging system, respectively generate a light beam formed of a plurality of sub-beams of light that can be controlled independently of each other, each independently controllable sub-beam forming a pixelated ray. The modules may thus comprise matrices with micro-mirrors, in particular rotationally controllable, capable of deflecting light rays emitted by a light source, as will be described by way of example thereafter. Another technology for these pixel-based imaging systems may be the combination of a laser source, a swivel mirror, and a plate-like wavelength conversion means having phosphor elements, usually designated under the term phosphorus. The laser source emits a point beam at a given point in the microelectronic system formed by the pivoting mirror. The reflective surface of this system deflects the beam onto the phosphor plate at a precise point of impact. It is understood that if the movement of the microelectronic system is controlled, the displacement of the point of impact is achieved. By a rapid displacement of the microelectronic system, a scanning of points is carried out on the phosphor plate and a virtual image can then be formed on the phosphor plate, it being understood that this plate is advantageously disposed at the object focus of the projection system. . The cryptogram or virtual image is produced on the phosphor plate, and by extension in projection at the output of the module, by modulating the emission intensity adjustment of the laser source at several points of the image. The commands sent to the laser source and to the actuator are synchronized for the realization of the desired virtual image on the phosphor plate, on the basis of which a modified image, more diffuse, can then be reemitted at the output of the module towards the optical device, for its projection on the road scene.

Fig. 4 illustrates a pixelated imaging system such that it can be advantageously formed in one or more modules participating in the pixelated image projection system. This pixilated imaging system comprises a light source 28 capable of emitting a light beam 29 towards a reflector 30, configured to deflect the beams of the beam towards a matrix of micro-mirrors 32. The light source can for example example consist of light emitting diodes or laser diodes, it being understood that any type of light source could be used. This light source is disposed in the vicinity of the image focus of the reflector, which may in particular have an elliptical or parabolic profile, and the matrix of micro-mirrors is arranged in the vicinity of the image focus of this reflector, so that the rays reflected by the reflective inner surface of the reflector are focused on the matrix of micro-mirrors 32, illuminating all the micro-mirrors.

A matrix of micro-mirrors used here can consist of a matrix of mirrors that can be controlled independently in rotation from each other, formed by about 500 to 800 mirrors in each of the two dimensions of the matrix, each mirror having a size of 7 to 10 micrometers.

Preferably, each micro-mirror is pivotally mounted about an axis between two operating positions including an active position in which the micromirror reflects the incident light beam towards the projection optical system, and a passive position in which the microphone mirror reflects the incident light beam towards a light radiation absorber element not shown in FIG. 4.

Once reflected by at least a portion of the micro-mirrors, the light beam passes through a diopter 34 of the projection system, this diopter may be an example of a converging lens.

This type of system makes it possible to have at the output of the diopter 34 a highly resolved pixellated and digitized light beam 36 which forms all or part of the pixelated image 4 that it is desired to project in the final in the additional beam 26. Each pixel or pixellated ray component 36 that this beam corresponds to a portion of the original beam 29 deflected by a micro-mirror, and it is then possible to activate or not these micro-pixels by simply controlling the micro-mirrors. This feature then makes it possible to draw the shape of the light beam at the exit of the diopter according to the marking needs on the road, and in particular to represent on the projected area upstream of the vehicle a pictogram as illustrated by way of example on Figure 3.

It is appropriate to control certain micro-mirrors in passive position, or to reduce the emission intensity of the light source, according to the embodiment chosen for the module, in order to create a shaded area inside the additional beam 26 and generate graphical information. It will be understood that it is obviously possible to generate several pictograms 4 and to modify the control of the projection device and its pixelated imaging system to alternately project one of the plurality of pictograms referenced in the databases of the associated control module, which will associate the recognition of a driving situation or condition of the vehicle to the need to project a particular pictogram and which will control the movement of micro-mirrors or the emission intensity of the source accordingly. It will be understood that the projection of a pictogram can be linked to information received from a system embedded in the vehicle, for example a navigation system or a control system comprising triggers for safety information.

A first module 22a of the pixelated image projection assembly projects a first intermediate pixellated additional beam 26a into the zone of lower illumination 18. This first beam 26a takes the form of a parallelogram whose lateral edges are inclined by one. first angle Θ1 with respect to the direction of travel of the vehicle. This first module is oriented to project an image in the first intermediate beam 26a which is centered on the general optical axis 8 of the vehicle.

A second module 22b of the pixelated image projection assembly is disposed in the same projector next to the first module 22a. This second module 22b projects a second intermediate pixellated additional beam 26b in the zone of lower illumination 18. This second beam 26a takes the form of a parallelogram whose lateral edges are inclined at a second angle Θ2 with respect to the direction of progress of the vehicle. Like the first module, the second module is oriented to project an image into the corresponding intermediate beam 26b which is centered on the general optical axis 8 of the vehicle. It is understood that the orientation of the two modules is slightly different because of their offset within the projector, it being understood that the orientation of these modules is such that the projected image 4 is superimposed on the ground.

These two modules are arranged in the vicinity of each other to limit the maximum angular shift, so that the movements induced by the dynamics of the vehicle do not generate deformations of the superimposed image visible by the driver. Advantageously, and as shown in FIGS. 5 and 6 illustrating a pair of left and right headlights of a motor vehicle, the light modules present in the headlamp comprising the two modules 22a, 22b of the projection assembly of Raster image 24 are arranged so that these two modules 22a, 22b are arranged in the vicinity of one another, without other light modules interposed between them. Furthermore, it is understood that to limit the angular variations of an intermediate beam to another, it is advantageous to position these two modules of the pixelated image projection assembly as close as possible to the optical axis of the vehicle hence their position in the lower right corner 38 of the left headlamp, it being understood that the headlamps are illustrated in Figures 5 and 6 seen from outside the vehicle.

Similarly, it is interesting that the projector comprising all the modules of the projection assembly of a pixelated image is the projector disposed on the driving side of the vehicle, that is to say id the left projector 6a in the case of a vehicle with a steering wheel on the left. The perception of the angular offset between the two intermediate images superimposed to form the image 4 is thus further reduced for the driver and possible deformations.

It is notable that according to the invention, and although all the modules forming the pixelated image projection assembly are housed in the same projector, the total number of light modules housed in the housing of a projector is equal from one projector to another. This is notably obtained by the asymmetrical arrangement of the Route beam projection modules. For example, the right projector 6b houses three modules

Route 20 (FIG. 5) and the left-hand projector 6a house only one of these Route 20 modules (FIG. 6), the total number of light modules in each projector being here equal to 7, with modules 22a, 22b as well involved in the formation of a pixelated image for marking on the ground, modules 20 participating in the formation of a Route beam, modules 14a, 14b participating in the formation of a beam dipped, modules 40 participating in the formation of a matrix beam, or modules 42 for the indication of direction indication.

Of course, various modifications can be made by those skilled in the art without departing from the context of the invention, it being understood that the invention can not be limited to the embodiment specifically described in this document, and that it extends in particular to all equivalent means and to any technically operating combination of these means.

In particular, we will find below a non-exhaustive list of possible variants, which fall within the scope of the invention: - it was previously described that the modules of the pixelated image projection assembly projected a beam additional in which a shadow zone formed an image, thus defined in negative, but it can be conceived that the modules participate in the projection of an image defined by an overcurrent relative to the remainder of the additional beam; in the above, it has been specified that the additional beam is projected into a zone of lesser illumination previously arranged in the overall light beam, in particular to increase the visibility of the pixelated image, but it is conceivable that the additional beam will come into superposition of the overall light beam, the pixellated image also being visible by the difference in light intensity between the pixels forming this image and the pixels forming the remainder of the additional beam; such a variant has the advantage of avoiding the realization of a passing beam with a zone of less illumination, but it implies a more energy consuming solution, it being understood that it is necessary to push the intensity of the additional beam to provide sufficient contrast with the dark area forming the image.

Claims (14)

  1. A projection apparatus for a motor vehicle, configured to project a pixellated image light beam (26) (4) through at least two modules (22a, 22b) forming a pixellated image projection assembly (24), said modules being configured to project two intermediate beams (26a, 26b) the addition of which forms said light beam, characterized in that said at least two modules of the pixelated image projection assembly are housed in a same housing (10) of projector (6a).
  2. 2. Device according to claim 1, characterized in that at least one module (22a, 22b) of the pixellated image projection assembly (24) comprises at least one light source (28), a plurality of micro movable mirrors (32) and a projection optical system (34) for projecting all or part of the pixelated image (4).
  3. 3. Device according to claim 2, characterized in that the micromirrors (32) are arranged to deflect the light emitted by the light source (28), said micro-mirrors being movable between two positions, a first active position. wherein the light is diverted towards the projection optical system (34) and a second passive position in which light is diverted to light absorbing means.
  4. 4. Device according to one of the preceding claims, characterized in that at least one module (22a, 22b) of the pixellated image projection assembly (24) comprises at least one laser source, a pivotable mirror adapted to deflecting the rays emitted by the laser source towards a wavelength conversion means disposed substantially at the object focus of a projection optical system, for projecting all or part of the raster image.
  5. 5. Device according to one of the preceding claims, characterized in that said pixelated light beam (26) (4) is an additional beam (26) complementary to a main beam (12).
  6. 6. Device according to the preceding claim, characterized in that said additional beam (26) overlaps an area of lower illumination (18) generated in said main beam (12).
  7. 7. Device according to the preceding claim, characterized in that the main beam (12) is generated by modules (14a, 14b) for projecting a beam dipped, distributed equally on the two projectors (6a, 6b) of the vehicle.
  8. Motor vehicle headlamp, comprising a plurality of light modules configured to generate a specific type of beam, characterized in that it comprises at least two modules (22a, 22b) of a projection assembly of a pixelated image ( 24).
  9. Motor vehicle headlamp according to the preceding claim, characterized in that the two modules (22a, 22b) of the projection assembly of a pixellated image (24) are arranged in the vicinity of one another, without other light modules interposed between them.
  10. 10. Set of two projectors of a motor vehicle, including a left projector (6a) and a right projector (6b), said assembly comprising modules (14a, 14b) for projecting a passing beam, projection modules (20) of a Route beam and modules (22a, 22b) of a projection assembly of a pixellated image (24), characterized in that one of the two projectors comprises all of said modules of the projection set of a pixellated image.
  11. 11. Set of two projectors according to the preceding claim, characterized in that the number of modules is equal from one projector to another.
  12. 12. Set of two projectors according to the preceding claim, characterized in that a first projector (6a) comprises all of the modules (22a, 22b) of the projection assembly of a pixellated image (24) and in that the second projector (6b) has a greater number of Route beam projection modules (20) than the first projector.
  13. 13. Set of two projectors according to the preceding claim, characterized in that the first projector (6a) comprising all the modules (22a, 22b) of the projection assembly of a pixelated image (24) is the projector disposed of driving side of the vehicle.
  14. 14. Motor vehicle comprising a set of two projectors according to one of claims 11 to 13.
FR1560489A 2015-11-02 2015-11-02 Device for projecting the light beam of a motor vehicle configured to project a pixelized image Pending FR3043168A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR1560489A FR3043168A1 (en) 2015-11-02 2015-11-02 Device for projecting the light beam of a motor vehicle configured to project a pixelized image

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1560489A FR3043168A1 (en) 2015-11-02 2015-11-02 Device for projecting the light beam of a motor vehicle configured to project a pixelized image

Publications (1)

Publication Number Publication Date
FR3043168A1 true FR3043168A1 (en) 2017-05-05

Family

ID=55759666

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1560489A Pending FR3043168A1 (en) 2015-11-02 2015-11-02 Device for projecting the light beam of a motor vehicle configured to project a pixelized image

Country Status (1)

Country Link
FR (1) FR3043168A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3447370A1 (en) * 2017-08-23 2019-02-27 Valeo North America, Inc. Headlamp with road-writing system
FR3084307A1 (en) * 2018-07-27 2020-01-31 Valeo Vision Lighting system for a motor vehicle
EP3670258A1 (en) * 2018-12-18 2020-06-24 ZKW Group GmbH Light module system and method of controlling the light module system
WO2020207610A1 (en) * 2019-04-12 2020-10-15 HELLA GmbH & Co. KGaA Illumination apparatus for a motor vehicle

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10344174A1 (en) * 2003-09-22 2005-04-28 Hella Kgaa Hueck & Co Light beam deflection and scattering system for road vehicle headlight consists of 45 degree mirror assembly carrying large number of micro-mirrors each at slightly different angle to each other
US20110249460A1 (en) * 2010-04-08 2011-10-13 Takuya Kushimoto Vehicle headlight
EP2607165A1 (en) * 2011-12-19 2013-06-26 Valeo Vision Lighting modul comprising at least two light sources arranged substantially perpendicularly
EP2772682A2 (en) * 2013-02-27 2014-09-03 Koito Manufacturing Co., Ltd. Vehicle lamp and vehicle lighting system
DE112013003050T5 (en) * 2012-06-29 2015-03-05 Koito Manufacturing Co., Ltd. Vehicle lamp and method for controlling the same
DE102014225246A1 (en) * 2014-01-07 2015-07-09 Volkswagen Aktiengesellschaft Lighting device for a motor vehicle and method for controlling a lighting device according to the invention and a motor vehicle with a lighting device according to the invention
WO2015118890A1 (en) * 2014-02-10 2015-08-13 株式会社デンソー Headlight control device

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10344174A1 (en) * 2003-09-22 2005-04-28 Hella Kgaa Hueck & Co Light beam deflection and scattering system for road vehicle headlight consists of 45 degree mirror assembly carrying large number of micro-mirrors each at slightly different angle to each other
US20110249460A1 (en) * 2010-04-08 2011-10-13 Takuya Kushimoto Vehicle headlight
EP2607165A1 (en) * 2011-12-19 2013-06-26 Valeo Vision Lighting modul comprising at least two light sources arranged substantially perpendicularly
DE112013003050T5 (en) * 2012-06-29 2015-03-05 Koito Manufacturing Co., Ltd. Vehicle lamp and method for controlling the same
EP2772682A2 (en) * 2013-02-27 2014-09-03 Koito Manufacturing Co., Ltd. Vehicle lamp and vehicle lighting system
DE102014225246A1 (en) * 2014-01-07 2015-07-09 Volkswagen Aktiengesellschaft Lighting device for a motor vehicle and method for controlling a lighting device according to the invention and a motor vehicle with a lighting device according to the invention
WO2015118890A1 (en) * 2014-02-10 2015-08-13 株式会社デンソー Headlight control device

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3447370A1 (en) * 2017-08-23 2019-02-27 Valeo North America, Inc. Headlamp with road-writing system
CN109424908A (en) * 2017-08-23 2019-03-05 法雷奥北美有限公司 Headlamp road writing system
FR3084307A1 (en) * 2018-07-27 2020-01-31 Valeo Vision Lighting system for a motor vehicle
EP3670258A1 (en) * 2018-12-18 2020-06-24 ZKW Group GmbH Light module system and method of controlling the light module system
WO2020127152A1 (en) * 2018-12-18 2020-06-25 Zkw Group Gmbh Light module system and method for controlling the light module system
WO2020207610A1 (en) * 2019-04-12 2020-10-15 HELLA GmbH & Co. KGaA Illumination apparatus for a motor vehicle

Similar Documents

Publication Publication Date Title
EP2772682B1 (en) Vehicle lamp and vehicle lighting system
US9200780B2 (en) Light source for an automotive headlight with adaptive function
JP6275408B2 (en) Adaptive lighting system for automobiles
JP6132684B2 (en) Vehicle lighting
JP6383043B2 (en) Headlight module
JP6140700B2 (en) Vehicular lamp and control method thereof
EP2620697B1 (en) Vehicle lighting unit with projection lens and led
US8201981B2 (en) Projection module for a motor vehicle headlight
FR3008776B1 (en) Lamp for vehicle
JP5869223B2 (en) Vehicle headlamp
JP5398507B2 (en) Vehicle headlamp device
US8314558B2 (en) Light emitting diode headlamp for a vehicle
CN102834662B (en) Integral lighting assembly
US7044624B2 (en) Vehicle light with movable reflector portion and shutter portion for selectively switching an illuminated area of light incident on a predetermined portion of the vehicle light during driving
US6874923B2 (en) Lighting device of the elliptical type for an automobile
US7227611B2 (en) Adaptive and interactive scene illumination
JP5287121B2 (en) Vehicle lighting device
US8226285B2 (en) Vehicle headlamp apparatus
JPWO2015033764A1 (en) Vehicle lighting
US10228108B2 (en) Primary optical element for motor vehicle lighting module
ES2254886T3 (en) Eliptic lighting headlight that includes a secondary lighting source.
JP6709651B2 (en) Vehicle lamp, vehicle lamp control system, and vehicle equipped with these
EP2551155B1 (en) Light distribution controller of headlamp
JP4308708B2 (en) Vehicle headlamp
EP1160506B1 (en) Vehicle headlamp of the projection type and lighting device comprising at least one such a headlamp

Legal Events

Date Code Title Description
PLFP Fee payment

Year of fee payment: 2

PLSC Search report ready

Effective date: 20170505

PLFP Fee payment

Year of fee payment: 3

PLFP Fee payment

Year of fee payment: 5