EP2546569A2 - Multifunctional lighting/signalling device for a motor vehicle - Google Patents

Multifunctional lighting/signalling device for a motor vehicle Download PDF

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Publication number
EP2546569A2
EP2546569A2 EP12175597A EP12175597A EP2546569A2 EP 2546569 A2 EP2546569 A2 EP 2546569A2 EP 12175597 A EP12175597 A EP 12175597A EP 12175597 A EP12175597 A EP 12175597A EP 2546569 A2 EP2546569 A2 EP 2546569A2
Authority
EP
European Patent Office
Prior art keywords
optical
facet
lighting
polyhedron
folding
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.)
Granted
Application number
EP12175597A
Other languages
German (de)
French (fr)
Other versions
EP2546569A3 (en
EP2546569B1 (en
Inventor
Vanesa Sanchez
Stephan Sommerschuh
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 SAS
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Valeo Vision SAS
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Filing date
Publication date
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Publication of EP2546569A2 publication Critical patent/EP2546569A2/en
Publication of EP2546569A3 publication Critical patent/EP2546569A3/en
Application granted granted Critical
Publication of EP2546569B1 publication Critical patent/EP2546569B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/698—Shaft-shaped screens rotating along its longitudinal axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens

Definitions

  • the invention relates to a lighting / multifunction signaling device for a motor vehicle.
  • optical lighting / multifunction signaling devices for current motor vehicles is essential, because of the increasing multiplication and sophistication of the lighting and signaling functions to be performed.
  • the aforementioned functions include, at present, the Motorway Beam in English, Flat beam or Flat Beam in English, daytime running light beam or DRL for Daytime Running Light in English, and ADB beam, for Adaptive Driving Beam in English, ensuring the creation of a reduced adjustable illumination zone in pursuit of a vehicle traveling in the opposite direction or followed, in order to avoid any glare phenomenon of the driver of the latter.
  • a first solution consists in implementing an optical device comprising a light source, a reflector associated with this source and a projection lens, to form a light beam, and an optical element placed between the reflector and the lens.
  • This optical element can be displaced in translation in a direction orthogonal to the optical axis.
  • the optical element has several edges or successive edges to create a cutoff of the light beam. These edges act as a beam bender by lateral displacement of the optical element and an interposition position of the light beam by the stop or the edge concerned, for the execution of the lighting function / signaling sought.
  • a second solution consists in implementing an optical device comprising a light source, a reflector associated with this source and a projection lens to form a light beam, and a rotating element about an axis orthogonal to the optical axis of the light. set formed by the light source, the reflector and the lens.
  • the rotating element placed between the reflector and the lens, can be moved in rotation between a first and a second remarkable lighting position.
  • the rotating element comprises at least two covers associated respectively with the first and second lighting position and comprise at least one edge to create a cut-off of the light beam. They play the role of a beam folder.
  • the two covers and the rotating element are further arranged to perform a gradual transition of illumination between the two positions of remarkable lighting.
  • the present invention relates to the implementation of a lighting / signaling device for a motor vehicle likely to integrate all lighting / signaling functions of current vehicles, but in which the disadvantages and limitations of the devices of the aforementioned prior art are substantially removed.
  • An object of the present invention is in particular the implementation of a lighting / multifunction signaling device for a motor vehicle, in which the geometrical arrangement of the light beam folding edges constituting the beam folding machine is simplified, in the aim to simplify and streamline the manufacture and implementation of the beam bending machine.
  • Another object of the present invention is furthermore the implementation of a lighting / multifunction signaling device for a motor vehicle in which the beam bender is equipped with reflective optical facets, allowing a bending of a light beam with a light output. maximum illumination for each of the functions implemented.
  • Another object of the present invention is the implementation of a lighting / multifunction signaling device for a motor vehicle, in which the switching time for selecting and moving from one folding edge to another folding edge is substantially reduced, because of the simplification of the aforementioned geometric arrangement.
  • Another object of the present invention is furthermore the implementation of a lighting / multifunction signaling device for a motor vehicle, in which the processing of the illumination transitions from one light beam to another light beam of two functions. lighting / signaling is performed electronically, which minimizes the switching time and the visual effect produced on the driver of the vehicle, or a third vehicle, because of these transitions.
  • Another object of the present invention is finally the implementation of a lighting / multifunction signaling device for a motor vehicle, by means of which the execution of the function of continuation of the lighting / signaling functions ADB and code is furthermore simplified.
  • the lighting / multifunctional light beam signaling device for a motor vehicle which is the subject of the invention, comprises at least one double-focus elliptical collector, a light source placed in the vicinity of one of the foci, and a beam projection lens. luminous according to a beam of lighting / signaling. It is remarkable in that it further comprises a multifunction beam bender, formed by an optical polyhedron, said optical polyhedron being provided with a number greater than two optical facets, each optical facet being provided with a folding edge / beam transmitter generating a specific lighting / signaling function.
  • the optical polyhedron is placed in the path of the light beam, between the collector and the projection lens, in the vicinity of the second focus, and movable at least in rotation about an axis of rotation orthogonal to the optical axis of the assembly. , including the first and second homes.
  • a selection and control resource of at least one optical facet and the folding edge / beam transmitter associated therewith is provided to bring the folding / transmitting edge into the position of intercepting the light beam in the vicinity of the second focus, by rotational displacement control of the optical polyhedron.
  • the device according to the invention is furthermore remarkable in that, for a lighting / signaling system with four functions, the cross section of the optical polyhedron is inscribed in a square, on each side of the square being associated an optical facet and a specific folding / transmitting edge for folding the light beam according to a code beam, an ADB beam, a driving beam and a flat beam, respectively.
  • the device which is the subject of the invention is furthermore remarkable in that, for a lighting / signaling system with five functions, the cross-section of the optical polyhedron is inscribed in a pentagon, on each side of the pentagon being associated an optical facet and a specific folding / transmitting edge allowing the folding of the light beam, an optical facet and a folding / transmitting edge specific to the lighting / motorway signaling function being inserted between the optical facet and the specific folding / transmitting edge of the beam of light. code and the optical facet and the folding edge / specific transmitter of the ADB beam respectively.
  • the device which is the subject of the invention is furthermore remarkable in that, for a lighting / signaling system with six functions, the cross section of the optical polyhedron is inscribed in a hexagon, on each side of the hexagon being associated a facet optical and a specific folding / transmitting edge allowing the folding of the light beam, an optical facet and a folding edge / transmitter specific to the daylight lighting / signaling function being inserted between the optical facet and the Folder edge / specific transmitter of the flat beam and the optical facet and the specific edge of the code beam respectively.
  • the device, object of the invention is furthermore remarkable that the optical polyhedron is constituted by a plastic material, each optical facet and the folding edge / transmitter relative thereto being formed by extrusion and provided with a reflective coating, partially reflective or a recess.
  • the device which is the subject of the invention is also remarkable in that the selection and control resource comprises at least one rotation drive motor of the optical polyhedron, in increment of arc of rotation corresponding to the angle at the center of each optical facet, and a rotational drive motor control module.
  • the device which is the subject of the invention, is furthermore remarkable in that the control of a rotation arc increment is executed in pulse mode, of duration less than 1/30 of a second.
  • the device which is the subject of the invention is also remarkable in that, during the control by incremental rotation of each optical facet, the motor control module generates a control pulse of reduction / extinction of the intensity of the electric current delivered to the light source.
  • control module includes an electronic coding module receiving as input a coded signal indicating the state of the current beam and the state of the next beam and delivering a control signal the direction of rotation of the motor and the optical polyhedron and the number of arcs of rotation to change from the current beam state to the next beam state.
  • the device, object of the invention is also remarkable in that the beam folder is further mounted on a plate movable in translation in a horizontal direction orthogonal to the optical axis of the assembly including the first and the second focus , the translational control of the plate being performed so as to shift the folding edge / transmitter in the focal plane of the second focus and the illumination beam azimuthal angular tracking of a vehicle traveling in the same direction or in the opposite direction.
  • the device that is the subject of the invention is finally remarkable in that the resources selection and control comprise a motor for translational movement of the plate and the beam bender controlled by a control module controlled by a control unit and a camera.
  • the lighting / signaling device multifunctional light beam for a motor vehicle finds application to the equipment of motor vehicles of any type in order, in particular, to improve the safety of driving and circulation of vehicles equipped or not equipped with the latter.
  • the device which is the subject of the invention comprises at least one elliptical collector, also referred to as a reflector, denoted R, with a double focus f1, f2.
  • a light source S is placed in the vicinity of one of the foci, the focus f1.
  • the light source may be either a set of LEDs or a halogen source or other.
  • the device which is the subject of the invention also comprises a lens L for projecting the light beam, or fi, ft, f beams delivered by the light source S according to a lighting / signaling beam F.
  • the device object of the invention further comprises a multi-function beam folder, denoted 1, formed by an optical polyhedron.
  • This optical polyhedron 1 is provided with a number of optical facets greater than two, which can be arranged adjacently along a generative line of the polyhedron.
  • Each optical facet is provided with a folding edge / beam transmitter, this folding edge / beam transmitter generating a specific lighting / signaling function.
  • the optical polyhedron 1 is placed in the path of the light beam generated by the source S between the collector R and the projection lens L, in the vicinity of the second focus f2. It transmits reflected beams and beams transmitted to the lens. focus, whose focal plane contains the focus f2.
  • Each facet of the optical polyhedron 1 is provided at night with a reflective coating, if necessary partially reflecting, or with a recess, the folding edge / beam transmitter generating a specific lighting / signaling function of one of the facets being placed in the vicinity of the second focus f2.
  • the folding / transmitting edge associated with the facet considered is thus orthogonal to the optical axis ZZ of the assembly and to the plane of the sheet containing the figure 1 .
  • the optical polyhedron 1 is mobile at least in rotation about an axis of rotation YY orthogonal to the optical axis ZZ of the assembly including the first f1 and the second focus f2.
  • the device which is the subject of the invention comprises a resource 2 for selecting and controlling at least one optical facet and the folding edge / beam transmitter associated therewith for bringing this folding / transmitting edge into position. interception of the light beam in the vicinity of the second focus f2, by controlling the rotational displacement of the optical polyhedron 1.
  • the optical polyhedron 1 is thus dimensioned so as to allow the free rotation of the latter and the setting up of the facet, in particular the folding / transmitting edge, in the vicinity of the second focus f2 by simple rotation control around the axis. of rotation YY.
  • the edge of the polyhedron constituting the folding / transmitting edge of the face in question is placed orthogonally to the optical axis ZZ and to the plane of the sheet of the figure 1 .
  • the resource 2 for selecting and controlling at least one optical facet and the folding edge / beam transmitter thereof advantageously comprises a rotary drive motor 20 and a control module 21, which will be described in detail. later in the description. It is thus understood that the passage of one of the facets of the optical polyhedron 1 to another facet of the latter, to perform the switching of the corresponding lighting / signaling function, is thus performed by simple rotation of the optical polyhedron 1.
  • the optical polyhedron 1 is represented as consisting of four facets substantially inscribed in a square. This mode of implementation is not limiting.
  • optical polyhedron 1 Various alternative embodiments of the optical polyhedron 1 are shown and described in connection with the figure 2 and Figures 3a, 3b and 3c .
  • the collector R is represented, in a nonlimiting manner, as constituted by a double reflector each provided with a source arranged symmetrically with respect to the optical axis ZZ.
  • each facet is provided with a specific folding / transmitting edge to perform the corresponding lighting / signaling function, the optical polyhedron 1 being switched by simple rotation around the axis of rotation YY, by ordering resource 2.
  • the shape and size of each facet and each corresponding bending / transmitting edge is subject to specific regulations to meet the criteria of the corresponding standard lighting / signaling functions. For this reason, the shape and size of each of the aforementioned facets will not be described in detail.
  • the cross-section of the optical polyhedron 1 is advantageously inscribed in a square, C.
  • a square At each side of the square is associated an optical facet and a specific folding / transmitting edge allowing the light beam to be folded in a Code beam, an ADB beam, a Route beam and a Flat beam respectively.
  • the corresponding facets are designated by the name of the function they can execute. They can advantageously be assigned each of a coded reference 01.02, 03 and 04 in fact to identify the position of each of the facets and the folding edge / transmitter associated therewith, during a switching sequence for example .
  • Each facet, in the case of figure 3a is included in a center angle of 90 °.
  • the cross section of the optical polyhedron 1 is inscribed in a pentagon P.
  • On each side of the pentagon is associated an optical facet and a specific folding / transmitting edge for folding the light beam.
  • an optical facet of a bending / transmitting edge specific to the Autoroute lighting / signaling function is inserted between the optical facet and the specific bending / transmitting edge of the Code beam and the optical facet and the specific folding / transmitting edge of the ADB beam respectively.
  • each of the Code, Highway, ADB, Route and Flat functions has the coded reference 01, 02, 03 04, 05 respectively.
  • Each optical facet is inscribed in an angle at center of 72 °.
  • the cross section of the optical polyhedron 1 is inscribed in a hexagon H.
  • an optical facet and a specific folding / transmitting edge for folding the light beam is then inserted between the optical facet and the specific bending / transmitting edge of the flat bundle and the optical facet and the Specific bender / transmitter edge of Code Beam.
  • each of the Code, Highway, ADB, Route, Flat and Day functions is coded as 01, 02, 03, 04, 05 and 06 respectively.
  • Each optical facet is inscribed in an angle at the center of 60 °.
  • the latter can be obtained by extrusion of a plastic material reinforced with fiberglass, for example.
  • the different facets and folding edge / transmitter of each of these can then be easily executed from a corresponding specific mold.
  • Each facet is then provided with a reflective coating formed, for example, by a metallization of silver or aluminum alloy.
  • the metallization is replaced at least partially by a recess denoted e which allows the passage and transmission of the entire upper beam at the facet plane and the virtual absence of folding of this beam, to execute the conventional Route lighting beam.
  • the latter corresponds to a divergent facet, introducing a dispersion and a reduction in the intensity of the light beam.
  • the number of optical facets of the optical polyhedron 1 is not limited to six. Proper sizing of the latter can increase this number to seven or eight.
  • the selection and control resource 2 advantageously comprises a motor 20 for rotating the optical polyhedron 1 in increments of arc of rotation corresponding to the angle at the center of each optical facet, independently of the embodiment of the number of functions described in FIG. 3a, 3b, or 3c .
  • a control module 21 makes it possible to control the driving of the optical polyhedron 1 by the motor 20.
  • the drive motor 20 may advantageously be constituted by a stepping motor. This type of motor makes it possible, in this application in particular, to adapt the angular rotation control of the optical polyhedron 1 to the engine rotation pitch.
  • a particularly advantageous specific control mode can be implemented from the coded references assigned to each of the aforementioned facets.
  • the rotation control by the module 21 can be performed from the initial coded reference Ci, corresponding to the facet and the folding edge / transmitter associated therewith in the current position of intercepting the light beam, and the coded reference final Cf to reach, corresponding to the facet and the folding edge associated with it, due to an automatic command or executed from the commodo of the vehicle by the driver of the latter. It is understood, in particular, that the calculation of the difference between the aforementioned coded reference values, the comparison of this difference in absolute value to half the number of functions implemented by the optical polyhedron 1 make it possible to determine the direction of direct rotation or retrograde optical polyhedron.
  • the control of the motor is thus deduced from the number of elementary rotations corresponding to an angle at the center of each facet, limited to a number less than or equal to half the number of functions implemented by the optical polyhedron 1, to reach the lighting function. / signaling corresponding to the final coded reference Cf, by rotation in the direct or retrograde direction.
  • the optical facet of the optical polyhedron 1 has its folding edge / BP transmitter, whose CP cutoff is placed in the vicinity the second focus f2. It is noted that in the case of figure 4b the CP cutoff of the BP folding / transmitting edge is more important.
  • the optical facet of the optical polyhedron 1 has its recess e instead of a folding edge / transmitter, which ensures a virtually complete transmission of incident beams emitted by the source, in the absence of interception.
  • the recess e appears as a cutaway allowing the aforementioned almost complete transmission.
  • the Flat light / signaling function is selected.
  • the optical facet of the optical polyhedron 1 has its fold edge / BP transmitter substantially centered in the vicinity of the second focus f2, in the absence of cut.
  • the Figures 5a to 5d take up, in a side sectional view of Figures 4a to 4d , the respective positions of the optical facets of the optical polyhedron 1, when selecting the similar functions of Code, ADB -L, Route and Flat respectively, accompanied by the iso-intensity curves of the light beam F delivered by the lens L in a frontal plane, orthogonal to the beam and containing the x, y directions.
  • the light beam F has in the upper left quadrant of the x-plane, y a substantially zero intensity, and a height-limited intensity in the upper right quadrant of this same plane, than in the case of the L-type ADB function, figure 5b , the light beam F has in the upper left quarter of the plane x, y a substantially zero intensity but a significant intensity in the upper right quarter of this same plane, intensity comparable to that of the road function in the same quarter of plane, that in the case of the Route function, figure 5c , the light beam F has a substantially symmetrical intensity diagram with respect to the vertical direction x, the intensity of the illumination being significant in the upper right and left quadrants, than in the case of the selection of the function Plat, figure 5d
  • the light beam F has a substantially zero intensity pattern in the upper right and left quadrants of the same plane x, y.
  • the switching is performed, as described above, by determining the direction of rotation of the optical polyhedron 1, in this situation the retrograde direction, because the number of switching arcs by rotation in the forward direction is greater than the half of the total number of functions implemented, as previously described in the description.
  • the switching of each successive optical facet according to the sequence represented in FIG. figure 6a is executed with a limited optical facet switching time, for example less than or equal to 500 milliseconds.
  • this switching mode makes it possible to substantially eliminate any transient secondary effect of optical switching linked to the rotation of the optical facets of the optical polyhedron 1.
  • the time interval between the switching of two successive facets can be taken much lower than the switching time of an optical facet.
  • the switching control and selection of an optical facet may advantageously consist in modulating the intensity of the current delivered to the light source S to attenuate, if not suppress, the intensity delivered to the latter during the switching time of the facet considered.
  • the intensity of the current delivered to the light source S during the switching process of each facet being brought substantially to the zero value.
  • the corresponding intensity chronogram delivered to the light source S is represented in dashed line on the figure 6b .
  • the figure 7a represents a view from above of the device that is the subject of the invention as represented in figure 1 , in the preferred embodiment mentioned above.
  • the same references designate the same elements.
  • the plan of the figure 7a is the plane y, z of the figure 1 .
  • the beam folder that is to say the optical polyhedron 1, and, where appropriate, the drive motor in rotation thereof are mounted on a plate 3 movable in translation in a direction y orthogonal to the optical axis ZZ of the assembly including the first focus f1 and the second focus f2.
  • the folding edge / transmitter BP being placed substantially at the second focus f2
  • the aforementioned translation is operated for the entire folding edge / BP transmitter in the focal plane of the focusing lens L.
  • the aforementioned translation and allows to shift the entire light beam F in the plane of the figure 7a either in the plane containing the directions y and z of the aforementioned figure.
  • a drive motor in translation denoted 4.
  • the latter is preferably a DC motor, because of the control accuracy of this type of motor.
  • the output shaft of the aforementioned direct current motor may advantageously be coupled to a reduction system, not shown in the drawing, to enable the displacement in translation of the assembly formed by the plate 3 and the Optical polyhedron 1.
  • the transmission system by gearbox or gear, of conventional type, will not be described in detail.
  • the device which is the subject of the invention, as represented in figure 7a makes it possible to carry out an illumination tracking of a third-party vehicle VT, in order to prevent any glare from the driver of the latter under the following conditions.
  • control module 21b presents the specific architecture completed, as represented in figure 7b .
  • a camera is provided on board a vehicle equipped with the device object of the invention, vehicle noted VE.
  • the equipment of the latter consists of a device according to the object of the invention applied to each of the headlights of the equipped vehicle. It is understood, in particular, that while a single camera and a control unit are used for a given equipped vehicle, the left and right front headlight thereof includes, if necessary, an independent control module 21 b allocated at each respective lighthouse. On the figure 7b only a control module 21b has been shown, so as not to overload the drawing.
  • the above-mentioned control module 21b is associated with a DBL control unit 22 which is directly connected to the general control unit of the vehicle.
  • the control module 21 performs the beam selection, i.e., lighting / signaling function comparable to the beam selection control module 21 shown in FIG. figure 1 .
  • the camera detects the third party vehicle VT in the far position.
  • the right light beams Fd and left Fg are both switched to the function
  • the above-mentioned beams show the iso-intensity diagram as represented in FIG. figure 5d , symmetrical with respect to the longitudinal axis of VE equipped vehicle.
  • the tracking function is started by the camera and executed by the control unit and of course, the control module 22, which controls the translational movement of the optical polyhedron 1, via the motor 4, to shift , depending on the approach of the third vehicle VT, the right beam Fd angularly to the left.
  • This operation is performed by controlling the engine 4 and continued to the position 3 of the third vehicle VT, corresponding substantially to the minimum illumination distance for a light beam type L.
  • the beam left Fg is not modified.
  • the right beam may be switched by rotating the optical polyhedron 1 to select, for example, the lighting / signaling function Code for the right beam Fd, as shown in position 4.
  • the right beam Fd can be switched again, and the left beam Fg, by selecting the Route lighting / signaling function for example, for each of the aforementioned bundles.
  • the process of tracking the third-party vehicle VT is not limited to the circulation of a third-party vehicle in the opposite direction to the equipped vehicle. This process also applies to any third-party vehicle preceding the VE-equipped vehicle, which VE is approaching. The beam switching and tracking sequences are then adapted accordingly.
  • tracking function known as such to those skilled in the art, will not be described in detail but that this function can be applied in combination to any type of light beam having a longitudinal asymmetry of illumination to create a dark area ZS.

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  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Lighting Device Outwards From Vehicle And Optical Signal (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Abstract

The device has a multifunction bending beam formed by an optical polyhedron (1) having more than two reflective optical facets, where each facet includes an optical edge for bending/transmitting a light beam (F) for generating a specific lighting/signaling function. The polyhedron is rotatable about a rotation axis (YY) orthogonal to an optical axis (ZZ). A resource (2) selects and controls the edge for bending/transmitting the beam for returning the edge in a light beam interception position in the vicinity of a focus by controlling rotation of the polyhedron.

Description

L'invention est relative à un dispositif d'éclairage/signalisation multifonctions pour véhicule automobile.The invention relates to a lighting / multifunction signaling device for a motor vehicle.

La mise en oeuvre de dispositifs optiques d'éclairage/signalisation multifonctions pour les véhicules automobiles actuels est primordiale, en raison de la multiplication et de la sophistication croissantes des fonctions d'éclairage et de signalisation à exécuter.The implementation of optical lighting / multifunction signaling devices for current motor vehicles is essential, because of the increasing multiplication and sophistication of the lighting and signaling functions to be performed.

D'un nombre de fonctions limitées à l'origine à l'éclairage par les feux de route et les feux de croisement, encore désigné codes, ou Low Beam en anglais, les fonctions précitées comprennent notamment, à l'heure actuelle, l'éclairage par faisceau d'autoroute, ou Motorway Beam en anglais, par faisceau plat ou Flat Beam en anglais, par faisceau d'éclairage diurne ou DRL pour Daytime Running Light en anglais, et par faisceau ADB, pour Adaptive Driving Beam en anglais, assurant la création d'une zone d'éclairement réduit modulable en poursuite d'un véhicule circulant en sens inverse ou suivi, dans le but d'éviter tout phénomène d'éblouissement du conducteur de ce dernier.From a number of functions initially limited to lighting by high beam and low beam, still designated codes, or Low Beam in English, the aforementioned functions include, at present, the Motorway Beam in English, Flat beam or Flat Beam in English, daytime running light beam or DRL for Daytime Running Light in English, and ADB beam, for Adaptive Driving Beam in English, ensuring the creation of a reduced adjustable illumination zone in pursuit of a vehicle traveling in the opposite direction or followed, in order to avoid any glare phenomenon of the driver of the latter.

Dans le but d'assurer les fonctions d'éclairage/signalisation précitées, différentes solutions ont été proposées dans la technique correspondante.In order to provide the aforementioned lighting / signaling functions, various solutions have been proposed in the corresponding technique.

Une première solution, telle que décrite par la demande de brevet EP2199664 , consiste à mettre en oeuvre un dispositif optique comportant une source de lumière, un réflecteur associé à cette source et à une lentille de projection, pour former un faisceau lumineux, et un élément optique placé entre le réflecteur et la lentille. Cet élément optique peut-être déplacé en translation dans une direction orthogonale à l'axe optique. L'élément optique comporte plusieurs arêtes ou bords successifs pour créer une coupure du faisceau lumineux. Ces bords jouent le rôle d'une plieuse de faisceau par déplacement latéral de l'élément optique et une mise en position d'interception du faisceau lumineux par l'arrête ou le bord concerné, pour l'exécution de la fonction d'éclairage/signalisation recherchée.A first solution, as described by the patent application EP2199664 , consists in implementing an optical device comprising a light source, a reflector associated with this source and a projection lens, to form a light beam, and an optical element placed between the reflector and the lens. This optical element can be displaced in translation in a direction orthogonal to the optical axis. The optical element has several edges or successive edges to create a cutoff of the light beam. These edges act as a beam bender by lateral displacement of the optical element and an interposition position of the light beam by the stop or the edge concerned, for the execution of the lighting function / signaling sought.

Cette solution donne satisfaction mais elle présente l'inconvénient non seulement de l'encombrement mécanique de l'élément optique mobile en translation et de son déplacement, mais également du processus de sélection de l'arête ou bord de pliage du faisceau, lequel, dans le but d'assurer une transition de commutation de fonction d'éclairage/signalisation acceptable pour un utilisateur, nécessite un déplacement/arrêt rapide de l'élément mobile. Ceci augmente l'encombrement nécessaire à l'exécution d'une telle commutation, en raison de la course maximale de déplacement de l'élément optique mobile pouvant atteindre la pleine longueur de celui-ci, pour une commutation entre bords plieurs/transmetteurs placés aux extrémités de ce dernier.This solution is satisfactory but it has the disadvantage not only of the mechanical bulk of the mobile optical element in translation and its displacement, but also the process of selecting the edge or bending edge of the beam, which, in order to ensure a lighting / signaling function switching transition acceptable for a user, requires a movement / stop fast of the moving element. This increases the space required to perform such switching, because of the maximum travel distance of the movable optical element can reach the full length thereof, for switching between folding edges / transmitters placed at extremities of the latter.

Une deuxième solution, telle que décrite par la demande de brevet EP 2244007 , consiste à mettre en oeuvre un dispositif optique comportant une source de lumière, un réflecteur associé à cette source et à une lentille de projection pour former un faisceau lumineux, et un élément rotatif autour d'un axe orthogonal à l'axe optique de l'ensemble formé par la source de lumière, le réflecteur et la lentille. L'élément rotatif, placé entre le réflecteur et la lentille, peut-être déplacé en rotation entre une première et une deuxième position d'éclairage remarquable. L'élément rotatif comporte au moins deux caches associés respectivement à la première et la deuxième position d'éclairage et comprennent au moins une arête pour créer une coupure du faisceau lumineux. Ils jouent ainsi le rôle d'une plieuse de faisceau. Les deux caches et l'élément rotatif sont en outre agencés pour exécuter une transition progressive d'éclairement entre les deux positions d'éclairage remarquable.A second solution, as described by the patent application EP 2244007 , consists in implementing an optical device comprising a light source, a reflector associated with this source and a projection lens to form a light beam, and a rotating element about an axis orthogonal to the optical axis of the light. set formed by the light source, the reflector and the lens. The rotating element, placed between the reflector and the lens, can be moved in rotation between a first and a second remarkable lighting position. The rotating element comprises at least two covers associated respectively with the first and second lighting position and comprise at least one edge to create a cut-off of the light beam. They play the role of a beam folder. The two covers and the rotating element are further arranged to perform a gradual transition of illumination between the two positions of remarkable lighting.

Une telle solution donne satisfaction. Toutefois, la mise en oeuvre d'une solution mécanique par agencement relatif des positionnements angulaires des surfaces des caches entre une première et une deuxième position d'éclairage, pour obtenir une commutation progressive des faisceaux, n'autorise pas une généralisation facile à un nombre de faisceaux quelconques, ou à tout le moins recouvrant l'ensemble des fonctions d'éclairage/signalisation précitées.Such a solution gives satisfaction. However, the implementation of a mechanical solution by relative arrangement of the angular positions of the surfaces of the covers between a first and a second lighting position, to obtain a progressive switching of the beams, does not allow an easy generalization to a number any beams, or at least covering all the lighting / signaling functions mentioned above.

La présente invention a pour objet la mise en oeuvre d'un dispositif d'éclairage/signalisation pour véhicule automobile susceptible d'intégrer l'ensemble des fonctions d'éclairage/signalisation des véhicules actuels, mais dans lequel les inconvénients et limitations des dispositifs de l'art antérieur précités sont sensiblement supprimés.The present invention relates to the implementation of a lighting / signaling device for a motor vehicle likely to integrate all lighting / signaling functions of current vehicles, but in which the disadvantages and limitations of the devices of the aforementioned prior art are substantially removed.

Un objet de la présente invention est en particulier la mise en oeuvre d'un dispositif d'éclairage/signalisation multifonctions pour véhicule automobile, dans lequel l'agencement géométrique des arêtes plieuses de faisceaux lumineux constitutifs de la plieuse de faisceau est simplifié, dans le but de simplifier et rationaliser la fabrication et la mise en oeuvre de la plieuse de faisceau.An object of the present invention is in particular the implementation of a lighting / multifunction signaling device for a motor vehicle, in which the geometrical arrangement of the light beam folding edges constituting the beam folding machine is simplified, in the aim to simplify and streamline the manufacture and implementation of the beam bending machine.

Un autre objet de la présente invention est en outre la mise en oeuvre d'un dispositif d'éclairage/signalisation multifonctions pour véhicule automobile dans lequel la plieuse de faisceau est équipée de facettes optiques réfléchissantes, permettant un pliage de faisceau lumineux présentant un rendement d'éclairement maximum pour chacune des fonctions implémentées.Another object of the present invention is furthermore the implementation of a lighting / multifunction signaling device for a motor vehicle in which the beam bender is equipped with reflective optical facets, allowing a bending of a light beam with a light output. maximum illumination for each of the functions implemented.

Un autre objet de la présente invention est la mise en oeuvre d'un dispositif d'éclairage/signalisation multifonctions pour véhicule automobile, dans lequel le temps de commutation pour la sélection et le passage d'une arête plieuse à une autre arrête plieuse est sensiblement réduit, en raison même de la simplification de l'agencement géométrique précité.Another object of the present invention is the implementation of a lighting / multifunction signaling device for a motor vehicle, in which the switching time for selecting and moving from one folding edge to another folding edge is substantially reduced, because of the simplification of the aforementioned geometric arrangement.

Un autre objet de la présente invention est en outre la mise en oeuvre d'un dispositif d'éclairage/signalisation multifonctions pour véhicule automobile, dans lequel le traitement des transitions d'éclairement d'un faisceau lumineux à un autre faisceau lumineux de deux fonctions d'éclairage/signalisation disponibles est exécuté par voie électronique, ce qui permet de réduire au maximum le temps de commutation et l'effet visuel produit sur le conducteur du véhicule, ou d'un véhicule tiers, du fait de ces transitions.Another object of the present invention is furthermore the implementation of a lighting / multifunction signaling device for a motor vehicle, in which the processing of the illumination transitions from one light beam to another light beam of two functions. lighting / signaling is performed electronically, which minimizes the switching time and the visual effect produced on the driver of the vehicle, or a third vehicle, because of these transitions.

Un autre objet de la présente invention est enfin la mise en oeuvre d'un dispositif d'éclairage/signalisation multifonctions pour véhicule automobile, grâce auquel l'exécution de la fonction de poursuite des fonctions d'éclairage/signalisation ADB et code est en outre simplifiée.Another object of the present invention is finally the implementation of a lighting / multifunction signaling device for a motor vehicle, by means of which the execution of the function of continuation of the lighting / signaling functions ADB and code is furthermore simplified.

Le dispositif d'éclairage/signalisation par faisceau lumineux multifonctions pour véhicule automobile, objet de l'invention, comporte au moins un collecteur elliptique à double foyer, une source lumineuse placée au voisinage d'un des foyers, et une lentille de projection du faisceau lumineux selon un faisceau d'éclairage/signalisation. Il est remarquable en ce qu'il comporte en outre une plieuse de faisceau multifonctions, formée par un polyèdre optique, ce polyèdre optique étant muni d'un nombre supérieur à deux de facettes optiques, chaque facette optique étant munie d'un bord plieur/transmetteur de faisceau générateur d'une fonction spécifique d'éclairage/signalisation. Le polyèdre optique est placé sur le trajet du faisceau lumineux, entre le collecteur et la lentille de projection, au voisinage du deuxième foyer, et mobile au moins en rotation autour d'un axe de rotation orthogonal à l'axe optique de l'ensemble, incluant le premier et le deuxième foyer. Une ressource de sélection et de commande d'au moins une facette optique et du bord plieur/transmetteur de faisceau associé à celle-ci est prévue pour amener ce bord plieur/transmetteur en position d'interception du faisceau lumineux au voisinage du deuxième foyer, par commande de déplacement en rotation du polyèdre optique.The lighting / multifunctional light beam signaling device for a motor vehicle, which is the subject of the invention, comprises at least one double-focus elliptical collector, a light source placed in the vicinity of one of the foci, and a beam projection lens. luminous according to a beam of lighting / signaling. It is remarkable in that it further comprises a multifunction beam bender, formed by an optical polyhedron, said optical polyhedron being provided with a number greater than two optical facets, each optical facet being provided with a folding edge / beam transmitter generating a specific lighting / signaling function. The optical polyhedron is placed in the path of the light beam, between the collector and the projection lens, in the vicinity of the second focus, and movable at least in rotation about an axis of rotation orthogonal to the optical axis of the assembly. , including the first and second homes. A selection and control resource of at least one optical facet and the folding edge / beam transmitter associated therewith is provided to bring the folding / transmitting edge into the position of intercepting the light beam in the vicinity of the second focus, by rotational displacement control of the optical polyhedron.

Le dispositif objet de l'invention est en outre remarquable en ce que, pour un système d'éclairage/signalisation à quatre fonctions, la section droite du polyèdre optique est inscrite dans un carré, à chaque côté du carré étant associés une facette optique et un bord plieur/transmetteur spécifique permettant le pliage du faisceau lumineux selon un faisceau de code, un faisceau ADB, un faisceau de route et un faisceau plat, respectivement.The device according to the invention is furthermore remarkable in that, for a lighting / signaling system with four functions, the cross section of the optical polyhedron is inscribed in a square, on each side of the square being associated an optical facet and a specific folding / transmitting edge for folding the light beam according to a code beam, an ADB beam, a driving beam and a flat beam, respectively.

Le dispositif objet de l'invention est en outre remarquable en ce que, pour un système d'éclairage/signalisation à cinq fonctions, la section droite du polyèdre optique est inscrite dans un pentagone, à chaque côté du pentagone étant associés une facette optique et un bord plieur/transmetteur spécifique permettant le pliage du faisceau lumineux, une facette optique et un bord plieur/transmetteur spécifique à la fonction d'éclairage/signalisation d'autoroute étant insérés entre la facette optique et le bord plieur/transmetteur spécifique du faisceau de code et la facette optique et le bord plieur/transmetteur spécifique du faisceau ADB respectivement.The device which is the subject of the invention is furthermore remarkable in that, for a lighting / signaling system with five functions, the cross-section of the optical polyhedron is inscribed in a pentagon, on each side of the pentagon being associated an optical facet and a specific folding / transmitting edge allowing the folding of the light beam, an optical facet and a folding / transmitting edge specific to the lighting / motorway signaling function being inserted between the optical facet and the specific folding / transmitting edge of the beam of light. code and the optical facet and the folding edge / specific transmitter of the ADB beam respectively.

Le dispositif objet de l'invention est en outre remarquable en ce que, pour un système d'éclairage/signalisation à six fonctions, la section droite du polyèdre optique est inscrite dans un hexagone, à chaque côté de l'hexagone étant associés une facette optique et un bord plieur/transmetteur spécifique permettant le pliage du faisceau lumineux, une facette optique et un bord plieur/transmetteur spécifique à la fonction d'éclairage/signalisation d'éclairage diurne étant insérés entre la facette optique et le bord plieur/transmetteur spécifique du faisceau plat et la facette optique et le bord spécifique du faisceau de code respectivement.The device which is the subject of the invention is furthermore remarkable in that, for a lighting / signaling system with six functions, the cross section of the optical polyhedron is inscribed in a hexagon, on each side of the hexagon being associated a facet optical and a specific folding / transmitting edge allowing the folding of the light beam, an optical facet and a folding edge / transmitter specific to the daylight lighting / signaling function being inserted between the optical facet and the Folder edge / specific transmitter of the flat beam and the optical facet and the specific edge of the code beam respectively.

Le dispositif, objet de l'invention, est en outre remarquable ce que le polyèdre optique est constitué par un matériau plastique, chaque facette optique et le bord plieur/transmetteur y relatif étant formés par extrusion et munis d'un revêtement réfléchissant, partiellement réfléchissant ou d'un évidement.The device, object of the invention, is furthermore remarkable that the optical polyhedron is constituted by a plastic material, each optical facet and the folding edge / transmitter relative thereto being formed by extrusion and provided with a reflective coating, partially reflective or a recess.

Le dispositif objet de l'invention est également remarquable en ce que la ressource de sélection et de commande comporte au moins un moteur d'entraînement en rotation du polyèdre optique, par incrément d'arc de rotation correspondant à l'angle au centre de chaque facette optique, et, un module de commande du moteur d'entraînement en rotation.The device which is the subject of the invention is also remarkable in that the selection and control resource comprises at least one rotation drive motor of the optical polyhedron, in increment of arc of rotation corresponding to the angle at the center of each optical facet, and a rotational drive motor control module.

Le dispositif, objet de l'invention, est en outre remarquable en ce que la commande d'un incrément d'arc de rotation est exécutée en mode impulsionnel, de durée inférieure à1/30 de seconde.The device, which is the subject of the invention, is furthermore remarkable in that the control of a rotation arc increment is executed in pulse mode, of duration less than 1/30 of a second.

Le dispositif objet de l'invention est également remarquable en ce que, lors de la commande par incrément d'arc de rotation de chaque facette optique, le module de commande du moteur engendre en outre une impulsion de commande de réduction/extinction de l'intensité du courant électrique délivré à la source lumineuse.The device which is the subject of the invention is also remarkable in that, during the control by incremental rotation of each optical facet, the motor control module generates a control pulse of reduction / extinction of the intensity of the electric current delivered to the light source.

Le dispositif, objet de l'invention, est également remarquable ce que le module de commande inclut un module de codage électronique recevant en entrée un signal codé indiquant l'état du faisceau actuel et l'état du faisceau suivant et délivrant un signal de commande du sens de rotation du moteur et du polyèdre optique et du nombre d'arcs de rotation pour passer de l'état de faisceau actuel à l'état de faisceau suivant.The device, object of the invention, is also remarkable that the control module includes an electronic coding module receiving as input a coded signal indicating the state of the current beam and the state of the next beam and delivering a control signal the direction of rotation of the motor and the optical polyhedron and the number of arcs of rotation to change from the current beam state to the next beam state.

Le dispositif, objet de l'invention, est également remarquable en ce que la plieuse de faisceau est en outre montée sur une platine mobile en translation dans une direction horizontale orthogonale à l'axe optique de l'ensemble incluant le premier et le deuxième foyer, la commande en translation de la platine étant effectuée de façon à décaler le bord plieur/transmetteur dans le plan focal du deuxième foyer et le faisceau d'éclairage en poursuite angulaire azimutale d'un véhicule circulant dans le même sens ou en sens inverse.The device, object of the invention, is also remarkable in that the beam folder is further mounted on a plate movable in translation in a horizontal direction orthogonal to the optical axis of the assembly including the first and the second focus , the translational control of the plate being performed so as to shift the folding edge / transmitter in the focal plane of the second focus and the illumination beam azimuthal angular tracking of a vehicle traveling in the same direction or in the opposite direction.

Le dispositif objet de l'invention est enfin remarquable en ce que les ressources de sélection et de commande comportent un moteur de déplacement en translation de la platine et de la plieuse de faisceau commandé par un module de commande piloté par une unité de commande et une caméra.The device that is the subject of the invention is finally remarkable in that the resources selection and control comprise a motor for translational movement of the plate and the beam bender controlled by a control module controlled by a control unit and a camera.

Le dispositif d'éclairage/signalisation par faisceau lumineux multifonctions pour véhicule automobile, objet de l'invention, trouve application à l'équipement de véhicules automobiles de tout type dans le but, notamment, d'améliorer la sécurité de conduite et de circulation de véhicules équipés ou non équipés de ce dernier.The lighting / signaling device multifunctional light beam for a motor vehicle, object of the invention, finds application to the equipment of motor vehicles of any type in order, in particular, to improve the safety of driving and circulation of vehicles equipped or not equipped with the latter.

Il sera mieux compris à la lecture de la description et à l'observation des dessins dans lesquels :

  • la figure 1 représente un schéma de principe, selon une vue en coupe, suivant un plan longitudinal de symétrie, du dispositif d'éclairage/signalisation par faisceau lumineux multifonctions pour véhicule automobile objet de la présente invention ;
  • la figure 2 représente, selon une vue en perspective, un détail du dispositif d'éclairage/signalisation par faisceau lumineux multifonctions pour véhicule automobile, objet de la présente invention, tel que représenté en figure 1 ;
  • les figures 3a, 3b et 3c représentent, à titre illustratif, différentes variantes d'exécution d'un polyèdre optique permettant la mise en oeuvre du dispositif objet de l'invention pour l'implémentation de quatre, cinq, six fonctions d'éclairage/signalisation respectivement, au moyen d'un polyèdre optique spécifique correspondant ;
  • les figures 4a, 4b, 4c et 4d représentent une vue en perspective du polyèdre optique commuté dans ses différentes positions, pour l'exécution d'une fonction d'éclairage/signalisation spécifique associée à la facette correspondante du polyèdre optique, dans le cas où ce polyèdre optique présente quatre facettes, et, en conséquence, permet l'exécution de quatre fonctions d'éclairage/signalisation distinctes;
  • la figure 5a représente, à titre illustratif, une vue en coupe de la figure 4a selon un plan longitudinal de symétrie de cette dernière et le diagramme d'iso-intensité du faisceau lumineux obtenu dans un plan orthogonal à l'axe optique ZZ de l'ensemble ;
  • la figure 5b représente, à titre illustratif, une vue en coupe de la figure 4b selon un plan longitudinal de symétrie de cette dernière et le diagramme d'iso-intensité du faisceau lumineux obtenu dans un plan orthogonal à l'axe optique ZZ de l'ensemble ;
  • la figure 5c représente à titre illustratif, une vue en coupe de la figure 4c selon un plan longitudinal de symétrie de cette dernière et le diagramme d'iso-intensité du faisceau lumineux obtenu dans un plan orthogonal à l'axe optique ZZ de l'ensemble ;
    • la figure 5d représente, à titre illustratif, une coupe de la figure 4d selon un plan longitudinal de symétrie de cette dernière et le diagramme d'iso-intensité du faisceau lumineux obtenu dans un plan orthogonal à l'axe optique ZZ de l'ensemble ;
    • la figure 6a représente, à titre illustratif, une commande par impulsions de la rotation du polyèdre optique dans un dispositif d'éclairage/signalisation par faisceau lumineux multifonctions pour véhicule automobile, conforme à l'objet de la présente invention ;
    • la figure 6b représente à titre illustratif une commande par impulsions de la rotation du polyèdre optique de la figure 6a dans une variante préférentielle de mise en oeuvre, dans laquelle l'intensité d'alimentation de la source lumineuse est modulée de façon à atténuer et/ou supprimer la visibilité des transitoires de commutation du faisceau optique, du fait de la rotation du polyèdre optique précité ;
    • la figure 7a représente, selon une vue de dessus, le dispositif d'éclairage/signalisation par faisceau lumineux multifonctions pour véhicule automobile, objet de l'invention, tel que représenté en figure 1, dans un mode de mise en oeuvre préférentiel non limitatif, dans lequel une combinaison de faisceaux d'éclairage/signalisation peut-être effectuée pour des faisceaux d'éclairage/signalisation différents, pour chaque projecteur avant du véhicule automobile, notamment lors de la mise en oeuvre de la fonction ADB et de la poursuite en azimut d'un véhicule tiers précédant le véhicule équipé du dispositif objet de l'invention, ou venant en sens inverse de ce dernier, dans le but de supprimer tout éblouissement du conducteur de ce véhicule tiers ;
    • la figure 7b représente un schéma fonctionnel complet de commande du dispositif objet de l'invention tel que représenté en figure 7a ;
    • la figure 7c représente une illustration de la commande de faisceau par la fonction ADB obtenue grâce à la mise en oeuvre du dispositif objet de l'invention tel que représenté en figures 7a et 7b.
It will be better understood by reading the description and by observing the drawings in which:
  • the figure 1 represents a block diagram, in a sectional view, along a longitudinal plane of symmetry, of the lighting device / multifunction light beam signaling for a motor vehicle object of the present invention;
  • the figure 2 represents, in a perspective view, a detail of the multifunction light beam illumination / signaling device for a motor vehicle, object of the present invention, as represented in FIG. figure 1 ;
  • the Figures 3a, 3b and 3c represent, by way of illustration, various variant embodiments of an optical polyhedron allowing the implementation of the device that is the subject of the invention for the implementation of four, five, six lighting / signaling functions respectively, by means of a corresponding specific optical polyhedron;
  • the Figures 4a, 4b, 4c and 4d represent a perspective view of the optical polyhedron switched in its different positions, for the execution of a specific lighting / signaling function associated with the corresponding facet of the optical polyhedron, in the case where this optical polyhedron has four facets, and as a result, allows the execution of four distinct lighting / signaling functions;
  • the figure 5a represents, for illustrative purposes, a sectional view of the figure 4a along a longitudinal plane of symmetry of the latter and the iso-intensity diagram of the light beam obtained in a plane orthogonal to the optical axis ZZ of the assembly;
  • the figure 5b represents, for illustrative purposes, a sectional view of the figure 4b along a longitudinal plane of symmetry of the latter and the iso-intensity diagram of the light beam obtained in a plane orthogonal to the optical axis ZZ of the assembly;
  • the figure 5c represents for illustrative purposes, a sectional view of the figure 4c according to a longitudinal plane of symmetry of the latter and the iso-intensity diagram of the light beam obtained in a plane orthogonal to the optical axis ZZ of the assembly;
    • the figure 5d represents, for illustrative purposes, a section of the figure 4d along a longitudinal plane of symmetry of the latter and the iso-intensity diagram of the light beam obtained in a plane orthogonal to the optical axis ZZ of the assembly;
    • the figure 6a represents, for illustrative purposes, a pulse control of the rotation of the optical polyhedron in a multifunction light beam illumination / signaling device for a motor vehicle, in accordance with the subject of the present invention;
    • the figure 6b represents for illustrative purposes a pulse control of the rotation of the optical polyhedron of the figure 6a in a preferred embodiment, in which the intensity of supply of the light source is modulated so as to attenuate and / or eliminate the visibility of the switching transients of the optical beam, because of the rotation of the aforementioned optical polyhedron ;
    • the figure 7a represents, in a view from above, the lighting / signaling device multifunction light beam for a motor vehicle, object of the invention, as shown in FIG. figure 1 , in a preferred non-limiting embodiment, in which a combination of lighting / signaling beams can be made for different lighting / signaling beams, for each front projector of the motor vehicle, especially when setting implementation of the ADB function and azimuth tracking of a third vehicle preceding the vehicle equipped with the device object of the invention, or coming in the opposite direction of the latter, in order to remove any dazzle of the driver of this vehicle third party;
    • the figure 7b represents a complete functional block diagram of the device object of the invention as represented in FIG. figure 7a ;
    • the Figure 7c represents an illustration of the control of the beam by the function ADB obtained thanks to the implementation of the device object of the invention as represented in FIG. figures 7a and 7b .

Une description plus détaillée du dispositif d'éclairage/signalisation par faisceau lumineux multifonctions pour véhicule automobile, conforme à l'objet de la présente invention, sera maintenant donnée en liaison avec la figure 1.A more detailed description of the multifunction lighting / signaling device for a motor vehicle, in accordance with the purpose of this invention, will now be given in connection with the figure 1 .

En référence à la figure précitée, on indique que le dispositif objet de l'invention comporte au moins un collecteur elliptique, encore désigné réflecteur, noté R, à double foyer f1,f2. Une source lumineuse S est placée au voisinage d'un des foyers, le foyer f1. La source lumineuse peut-être soit un ensemble de diodes LEDs, soit une source halogène ou autre.With reference to the above-mentioned figure, it is pointed out that the device which is the subject of the invention comprises at least one elliptical collector, also referred to as a reflector, denoted R, with a double focus f1, f2. A light source S is placed in the vicinity of one of the foci, the focus f1. The light source may be either a set of LEDs or a halogen source or other.

Le dispositif objet de l'invention comporte également une lentille L de projection du faisceau lumineux, soit des faisceaux fi, ft, fr délivrés par la source lumineuse S selon un faisceau d'éclairage/signalisation F.The device which is the subject of the invention also comprises a lens L for projecting the light beam, or fi, ft, f beams delivered by the light source S according to a lighting / signaling beam F.

Selon un aspect remarquable du dispositif objet de l'invention, celui-ci comporte en outre une plieuse de faisceaux multifonctions, notée 1, formée par un polyèdre optique. Ce polyèdre optique 1 est muni d'un nombre de facettes optiques supérieur à deux, lesquelles peuvent être agencées de manière adjacente selon une ligne génératrice du polyèdre. Chaque facette optique est munie d'un bord plieur/transmetteur de faisceau, ce bord plieur/transmetteur de faisceau étant générateur d'une fonction spécifique d'éclairage/signalisation. Le polyèdre optique1 est placé sur le trajet des faisceau lumineux fi engendrés par la source S entre le collecteur R et la lentille L de projection , au voisinage du deuxième foyer f2.ll transmet des faisceaux réfléchis fr et des faisceaux transmis ft à la lentille de focalisation, dont le plan focal contient le foyer f2.According to a remarkable aspect of the device object of the invention, it further comprises a multi-function beam folder, denoted 1, formed by an optical polyhedron. This optical polyhedron 1 is provided with a number of optical facets greater than two, which can be arranged adjacently along a generative line of the polyhedron. Each optical facet is provided with a folding edge / beam transmitter, this folding edge / beam transmitter generating a specific lighting / signaling function. The optical polyhedron 1 is placed in the path of the light beam generated by the source S between the collector R and the projection lens L, in the vicinity of the second focus f2. It transmits reflected beams and beams transmitted to the lens. focus, whose focal plane contains the focus f2.

Chaque facette du polyèdre optique 1 est munie soir d'un revêtement réfléchissant, le cas échéant partiellement réfléchissant, ou d'un évidement, le bord plieur/transmetteur de faisceau générateur d'une fonction spécifique d'éclairage/signalisation d'une des facettes étant placé au voisinage du deuxième foyer f2. Le bord plieur/transmetteur associé à la facette considérée est ainsi orthogonal à l'axe optique ZZ de l'ensemble et au plan de la feuille contenant la figure 1.Each facet of the optical polyhedron 1 is provided at night with a reflective coating, if necessary partially reflecting, or with a recess, the folding edge / beam transmitter generating a specific lighting / signaling function of one of the facets being placed in the vicinity of the second focus f2. The folding / transmitting edge associated with the facet considered is thus orthogonal to the optical axis ZZ of the assembly and to the plane of the sheet containing the figure 1 .

En outre, selon un aspect remarquable du dispositif objet de l'invention, le polyèdre optique 1 est mobile au moins en rotation autour d'un axe de rotation YY orthogonal à l'axe optique ZZ de l'ensemble incluant le premier f1 et le deuxième foyer f2.In addition, according to a remarkable aspect of the device according to the invention, the optical polyhedron 1 is mobile at least in rotation about an axis of rotation YY orthogonal to the optical axis ZZ of the assembly including the first f1 and the second focus f2.

Sur la figure 1 on a représenté en traits mixtes une liaison mécanique RR de l'axe de rotation YY avec un système d'entraînement décrit maintenant ci-après.On the figure 1 is shown in phantom a mechanical link RR of the axis of rotation YY with a drive system described hereinafter.

En outre, le dispositif objet de l'invention comprend une ressource 2 de sélection et de commande d'au moins une facette optique et du bord plieur/transmetteur de faisceau associé à celle-ci pour amener ce bord plieur/transmetteur en position d'interception du faisceau lumineux au voisinage du deuxième foyer f2, par commande de déplacement en rotation du polyèdre optique 1.In addition, the device which is the subject of the invention comprises a resource 2 for selecting and controlling at least one optical facet and the folding edge / beam transmitter associated therewith for bringing this folding / transmitting edge into position. interception of the light beam in the vicinity of the second focus f2, by controlling the rotational displacement of the optical polyhedron 1.

On comprend, à l'observation de la figure 1, que la facette optique commandée et sélectionnée permet d'intercepter les faisceaux lumineux incidents fi pour renvoyer des faisceaux réfléchis partiellement réfléchis fr ou transmis ft vers la lentille L de projection pour constituer le faisceau d'éclairage/signalisation F.We understand, to the observation of the figure 1 that the controlled and selected optical facet intercepts the incident light beams to return reflected beams partially reflected fr or transmitted to the projection lens L to form the illumination / signaling beam F.

Le polyèdre optique 1 est ainsi dimensionné de façon à permettre la libre rotation de ce dernier et la mise en place de la facette, en particulier du bord plieur/transmetteur, au voisinage du deuxième foyer f2 par simple commande de rotation autour de l'axe de rotation YY. Dans ce but, l'arête du polyèdre constituant le bord plieur/transmetteur de la face concernée est placée orthogonalement à l'axe optique ZZ et au plan de la feuille de la figure 1.The optical polyhedron 1 is thus dimensioned so as to allow the free rotation of the latter and the setting up of the facet, in particular the folding / transmitting edge, in the vicinity of the second focus f2 by simple rotation control around the axis. of rotation YY. For this purpose, the edge of the polyhedron constituting the folding / transmitting edge of the face in question is placed orthogonally to the optical axis ZZ and to the plane of the sheet of the figure 1 .

La ressource 2 de sélection et de commande d'au moins une facette optique et du bord plieur/transmetteur de faisceau de celle-ci comprend avantageusement un moteur d'entraînement en rotation 20 et un module de commande 21, lesquels seront décrits de manière détaillée ultérieurement dans la description. On comprend ainsi que le passage d'une des facettes du polyèdre optique 1 à une autre facette de ce dernier, pour exécuter la commutation de la fonction d'éclairage/signalisation correspondante, est ainsi exécutée par simple mise en rotation du polyèdre optique 1.The resource 2 for selecting and controlling at least one optical facet and the folding edge / beam transmitter thereof advantageously comprises a rotary drive motor 20 and a control module 21, which will be described in detail. later in the description. It is thus understood that the passage of one of the facets of the optical polyhedron 1 to another facet of the latter, to perform the switching of the corresponding lighting / signaling function, is thus performed by simple rotation of the optical polyhedron 1.

Sur la figure 1, on a représenté le polyèdre optique 1 comme constitué de quatre facettes sensiblement inscrites dans un carré. Ce mode de mise en oeuvre n'est pas limitatif.On the figure 1 , the optical polyhedron 1 is represented as consisting of four facets substantially inscribed in a square. This mode of implementation is not limiting.

Différentes variantes d'exécution du polyèdre optique 1 sont représentées et décrites en liaison avec la figure 2 et des figures 3a, 3b et 3c.Various alternative embodiments of the optical polyhedron 1 are shown and described in connection with the figure 2 and Figures 3a, 3b and 3c .

Sur la figure 2, on a représenté, de manière non limitative, le collecteur R comme constitué par un double réflecteur muni chacun d'une source disposée symétriquement par rapport à l'axe optique ZZ.On the figure 2 , the collector R is represented, in a nonlimiting manner, as constituted by a double reflector each provided with a source arranged symmetrically with respect to the optical axis ZZ.

D'une manière générale, on indique que chaque facette est munie d'un bord plieur/transmetteur spécifique pour réaliser la fonction d'éclairage/signalisation correspondante, le polyèdre optique 1 étant commuté par simple rotation autour de l'axe de rotation YY, sur commande par la ressource de commande 2. La forme et le dimensionnement de chaque facette et de chaque bord plieur/transmetteur correspondant fait l'objet de dispositions réglementaires spécifiques permettant de répondre aux critères des fonctions d'éclairage/signalisation normalisées correspondantes. Pour cette raison, la forme et le dimensionnement de chacune des facettes précitées ne seront pas décrits en détail.In general, it is indicated that each facet is provided with a specific folding / transmitting edge to perform the corresponding lighting / signaling function, the optical polyhedron 1 being switched by simple rotation around the axis of rotation YY, by ordering resource 2. The shape and size of each facet and each corresponding bending / transmitting edge is subject to specific regulations to meet the criteria of the corresponding standard lighting / signaling functions. For this reason, the shape and size of each of the aforementioned facets will not be described in detail.

En référence à la figure 3a, lorsque le système d'éclairage/signalisation comporte quatre fonctions, ainsi que représenté en figure 1 ou 2, la section droite du polyèdre optique 1 est avantageusement inscrite dans un carré, C. À chaque côté du carré est associée une facette optique et un bord plieur/transmetteur spécifique permettant le pliage du faisceau lumineux selon un faisceau de Code, un faisceau ADB, un faisceau de Route et un faisceau Plat respectivement. Sur la figure 3a, les facettes correspondantes sont désignées par le nom de la fonction qu'elles permettent d'exécuter. Elles peuvent avantageusement être affectées chacune d'une référence codée 01,02, 03 et 04 permettant en fait de repérer la position de chacune des facettes et du bord plieur/transmetteur associé à celle-ci, lors d'une séquence de commutation par exemple. Chacune des facettes, dans le cas de la figure 3a, est comprise dans un angle au centre de 90°.With reference to the figure 3a when the lighting / signaling system has four functions, as shown in figure 1 or 2 , the cross-section of the optical polyhedron 1 is advantageously inscribed in a square, C. At each side of the square is associated an optical facet and a specific folding / transmitting edge allowing the light beam to be folded in a Code beam, an ADB beam, a Route beam and a Flat beam respectively. On the figure 3a , the corresponding facets are designated by the name of the function they can execute. They can advantageously be assigned each of a coded reference 01.02, 03 and 04 in fact to identify the position of each of the facets and the folding edge / transmitter associated therewith, during a switching sequence for example . Each facet, in the case of figure 3a , is included in a center angle of 90 °.

Lorsque le système d'éclairage signalisation comporte cinq fonctions, ainsi que représenté en figure 3b, la section droite du polyèdre optique 1 est inscrite dans un pentagone P. À chaque côté du pentagone est associée une facette optique et un bord plieur/transmetteur spécifique permettant le pliage du faisceau lumineux. Dans ce mode de réalisation, une facette optique d'un bord plieur/transmetteur spécifique à la fonction d'éclairage/signalisation d'Autoroute sont insérés entre la facette optique et le bord plieur/transmetteur spécifique du faisceau de Code et la facette optique et le bord plieur/transmetteur spécifique du faisceau ADB respectivement. Sur la figure 3b, chacune des fonctions Code, Autoroute, ADB, Route et Plat porte la référence codée 01, 02, 03 04, 05 respectivement. Chaque facette optique est inscrite dans un angle au centre de 72°.Where the signaling lighting system has five functions, as shown in figure 3b , the cross section of the optical polyhedron 1 is inscribed in a pentagon P. On each side of the pentagon is associated an optical facet and a specific folding / transmitting edge for folding the light beam. In this embodiment, an optical facet of a bending / transmitting edge specific to the Autoroute lighting / signaling function is inserted between the optical facet and the specific bending / transmitting edge of the Code beam and the optical facet and the specific folding / transmitting edge of the ADB beam respectively. On the figure 3b , each of the Code, Highway, ADB, Route and Flat functions has the coded reference 01, 02, 03 04, 05 respectively. Each optical facet is inscribed in an angle at center of 72 °.

Lorsque le système d'éclairage/signalisation comporte six fonctions, ainsi que représenté en figure 3c, la section droite du polyèdre optique 1 est inscrite dans un hexagone H. À chaque côté de l'hexagone est associée une facette optique et un bord plieur/transmetteur spécifique permettant le pliage du faisceau lumineux. De manière plus particulière, une facette optique et un bord plieur/transmetteur spécifique à la fonction d'éclairage/signalisation d'éclairage Diurne est alors insérée entre la facette optique et le bord plieur/transmetteur spécifique du faisceau Plat et la facette optique et le bord plieur/transmetteur spécifique du faisceau de Code. Sur la figure 3c, chacune des fonctions Code, Autoroute, ADB, Route, Plat et Diurne porte la référence codée 01, 02, 03, 04, 05 et 06 respectivement. Chaque facette optique est inscrite dans un angle au centre de 60°.When the lighting / signaling system has six functions, as shown in figure 3c , the cross section of the optical polyhedron 1 is inscribed in a hexagon H. At each side of the hexagon is associated an optical facet and a specific folding / transmitting edge for folding the light beam. More particularly, an optical facet and a folding / transmitting edge specific to the daylight lighting / signaling function is then inserted between the optical facet and the specific bending / transmitting edge of the flat bundle and the optical facet and the Specific bender / transmitter edge of Code Beam. On the figure 3c , each of the Code, Highway, ADB, Route, Flat and Day functions is coded as 01, 02, 03, 04, 05 and 06 respectively. Each optical facet is inscribed in an angle at the center of 60 °.

En ce qui concerne l'exécution du polyèdre optique 1 en tant que tel, on indique que ce dernier peut-être obtenu par extrusion d'un matériau plastique renforcé en fibre de verre par exemple. Les différentes facettes et bord plieur/transmetteur de chacune de celle-ci peuvent alors être facilement exécutés à partir d'un moule spécifique correspondant. Chaque facette est alors munie d'un revêtement réfléchissant formé, par exemple, par une métallisation en alliage d'argent ou d'aluminium. Dans le cas de la facette associée à la fonction Route, la métallisation est remplacée, au moins partiellement, par un évidement noté e lequel permet le passage et la transmission de la totalité du faisceau lumineux supérieur au plan de la facette et la quasi-absence de repliement de ce faisceau, pour exécuter le faisceau d'éclairage Route classique.Regarding the execution of the optical polyhedron 1 as such, it is indicated that the latter can be obtained by extrusion of a plastic material reinforced with fiberglass, for example. The different facets and folding edge / transmitter of each of these can then be easily executed from a corresponding specific mold. Each facet is then provided with a reflective coating formed, for example, by a metallization of silver or aluminum alloy. In the case of the facet associated with the route function, the metallization is replaced at least partially by a recess denoted e which allows the passage and transmission of the entire upper beam at the facet plane and the virtual absence of folding of this beam, to execute the conventional Route lighting beam.

En ce qui concerne la fonction d'éclairage Diurne, cette dernière correspond à une facette divergente, introduisant une dispersion et une réduction de l'intensité du faisceau lumineux. Le nombre de facettes optiques du polyèdre optique 1, n'est pas limité à six. Un dimensionnement approprié de ce dernier peut permettre d'augmenter ce nombre à sept ou huit.With regard to the daylighting function, the latter corresponds to a divergent facet, introducing a dispersion and a reduction in the intensity of the light beam. The number of optical facets of the optical polyhedron 1 is not limited to six. Proper sizing of the latter can increase this number to seven or eight.

Enfin en référence à la figure 1 on indique que la ressource de sélection et de commande 2 comporte avantageusement un moteur 20 d'entraînement en rotation du polyèdre optique 1 par incréments d'arc de rotation correspondant à l'angle au centre de chaque facette optique, indépendamment du mode de réalisation du nombre de fonctions décrit en figure 3a, 3b, ou 3c.Finally with reference to the figure 1 it is indicated that the selection and control resource 2 advantageously comprises a motor 20 for rotating the optical polyhedron 1 in increments of arc of rotation corresponding to the angle at the center of each optical facet, independently of the embodiment of the number of functions described in FIG. 3a, 3b, or 3c .

En outre, un module de commande 21 permet de commander l'entraînement du polyèdre optique 1 par le moteur 20. Le moteur 20 d'entraînement peut-être constitué avantageusement par un moteur pas à pas. Ce type de moteur permet, en particulier dans cette application, d'adapter la commande de rotation angulaire du polyèdre optique 1 au pas de rotation du moteur.In addition, a control module 21 makes it possible to control the driving of the optical polyhedron 1 by the motor 20. The drive motor 20 may advantageously be constituted by a stepping motor. This type of motor makes it possible, in this application in particular, to adapt the angular rotation control of the optical polyhedron 1 to the engine rotation pitch.

En particulier, un mode de commande spécifique particulièrement avantageux peut-être mis en oeuvre à partir des références codées attribuées à chacune des facettes précitées.In particular, a particularly advantageous specific control mode can be implemented from the coded references assigned to each of the aforementioned facets.

Ainsi, pour chacun des modes de réalisation représenté en figure 3a, 3b ou 3c la commande en rotation par le module 21 peut être exécutée à partir de la référence codée initiale Ci, correspondant à la facette et au bord plieur/transmetteur associé à celle-ci en position actuelle d'interception du faisceau lumineux, et de la référence codée finale Cf à atteindre, correspondant à la facette et au bord plieur associé à celle-ci, en raison d'une commande automatique ou exécutée à partir du commodo du véhicule par le conducteur de ce dernier. On comprend, en particulier, que le calcul de la différence entre les valeurs de référence codées précitées, la comparaison de cette différence en valeur absolue à la moitié du nombre de fonctions implémentées par le polyèdre optique 1 permettent de déterminer le sens de rotation directe ou rétrograde du polyèdre optique. La commande du moteur est ainsi déduite du nombre de rotations élémentaires correspondant à un angle au centre de chaque facette, limité à un nombre inférieur ou égal à la moitié du nombre de fonctions implémentées par le polyèdre optique 1, pour atteindre la fonction d'éclairage/signalisation correspondant à la référence codée finale Cf, par rotation dans le sens direct ou rétrograde.Thus, for each of the embodiments shown in FIG. 3a, 3b or 3c the rotation control by the module 21 can be performed from the initial coded reference Ci, corresponding to the facet and the folding edge / transmitter associated therewith in the current position of intercepting the light beam, and the coded reference final Cf to reach, corresponding to the facet and the folding edge associated with it, due to an automatic command or executed from the commodo of the vehicle by the driver of the latter. It is understood, in particular, that the calculation of the difference between the aforementioned coded reference values, the comparison of this difference in absolute value to half the number of functions implemented by the optical polyhedron 1 make it possible to determine the direction of direct rotation or retrograde optical polyhedron. The control of the motor is thus deduced from the number of elementary rotations corresponding to an angle at the center of each facet, limited to a number less than or equal to half the number of functions implemented by the optical polyhedron 1, to reach the lighting function. / signaling corresponding to the final coded reference Cf, by rotation in the direct or retrograde direction.

Une description plus détaillée de la position relative de chaque facette optique et du bord plieur/transmetteur BP associé à chacune de celle-ci sera maintenant donnée en liaison avec les figures 4a à 4d et 5a à 5d, dans le cas non limitatif de la figure 3a où le polyèdre optique 1 implémente quatre fonctions d'éclairage/signalisation.A more detailed description of the relative position of each optical facet and the folding / transmitting edge BP associated with each of them will now be given in connection with the Figures 4a to 4d and 5a to 5d , in the non-limiting case of the figure 3a where the optical polyhedron 1 implements four lighting / signaling functions.

Sur les figure 4a et 4b la fonction d'éclairage/signalisation de Code respectivement ADB de type L est sélectionnée. La facette optique du polyèdre optique 1 présente son bord plieur/transmetteur BP, dont la coupure CP est placée au voisinage du deuxième foyer f2. On note que, dans le cas de la figure 4b la coupure CP du bord plieur /transmetteur BP est plus importante.On the Figure 4a and 4b the lighting / signaling function of Code L respectively ADB is selected. The optical facet of the optical polyhedron 1 has its folding edge / BP transmitter, whose CP cutoff is placed in the vicinity the second focus f2. It is noted that in the case of figure 4b the CP cutoff of the BP folding / transmitting edge is more important.

Sur la figure 4c, la fonction d'éclairage/signalisation Route est sélectionnée. La facette optique du polyèdre optique 1 présente son évidement e en lieu et place d'un bord plieur/transmetteur, ce qui permet d'assurer une transmission quasi intégrale des faisceaux incidents émis par la source, en l'absence d'interception. L'évidement e apparaît comme un pan coupé permettant la transmission quasi intégrale précitée.On the figure 4c , the Route lighting / signaling function is selected. The optical facet of the optical polyhedron 1 has its recess e instead of a folding edge / transmitter, which ensures a virtually complete transmission of incident beams emitted by the source, in the absence of interception. The recess e appears as a cutaway allowing the aforementioned almost complete transmission.

Sur la figure 4d, la fonction d'éclairage/signalisation Plat est sélectionnée. La facette optique du polyèdre optique 1 présente son bord plieur/transmetteur BP sensiblement centré au voisinage du deuxième foyer f2, en l'absence de coupure.On the figure 4d , the Flat light / signaling function is selected. The optical facet of the optical polyhedron 1 has its fold edge / BP transmitter substantially centered in the vicinity of the second focus f2, in the absence of cut.

Les figures 5a à 5d reprennent, dans une vue en coupe latérale des figures 4a à 4d, la position respective des facettes optiques du polyèdre optique 1, lors de la sélection des fonctions semblables de Code, ADB -L, Route et Plat respectivement, accompagnées des courbes d'iso-intensité du faisceau lumineux F délivré par la lentille L dans un plan frontal, orthogonal au faisceau et contenant les directions x,y.The Figures 5a to 5d take up, in a side sectional view of Figures 4a to 4d , the respective positions of the optical facets of the optical polyhedron 1, when selecting the similar functions of Code, ADB -L, Route and Flat respectively, accompanied by the iso-intensity curves of the light beam F delivered by the lens L in a frontal plane, orthogonal to the beam and containing the x, y directions.

On constate, de manière classique, que dans le cas de la fonction Code figure 5a, le faisceau lumineux F présente dans le quart supérieur gauche du plan x,y une intensité sensiblement nulle, et une intensité limitée en hauteur dans le quart supérieur droit de ce même plan, que dans le cas de la fonction ADB de type L , figure 5b, le faisceau lumineux F présente dans le quart supérieur gauche du plan x,y une intensité sensiblement nulle mais une intensité importante dans le quart supérieur droit de ce même plan, intensité comparable à celle de la fonction route dans le même quart de plan, que dans le cas de la fonction Route, figure 5c , le faisceau lumineux F présente un diagramme d'intensité sensiblement symétrique par rapport à la direction verticale x, l'intensité de l'éclairement étant importante dans les quarts supérieurs droit et gauche, que dans le cas de la sélection de la fonction Plat, figure 5d, pour un éclairage urbain nocturne par exemple, le faisceau lumineux F présente un diagramme d'intensité sensiblement nulle dans les cadrans supérieurs droit et gauche du même plan x,y.It is found, in a conventional manner, that in the case of the function Code figure 5a , the light beam F has in the upper left quadrant of the x-plane, y a substantially zero intensity, and a height-limited intensity in the upper right quadrant of this same plane, than in the case of the L-type ADB function, figure 5b , the light beam F has in the upper left quarter of the plane x, y a substantially zero intensity but a significant intensity in the upper right quarter of this same plane, intensity comparable to that of the road function in the same quarter of plane, that in the case of the Route function, figure 5c , the light beam F has a substantially symmetrical intensity diagram with respect to the vertical direction x, the intensity of the illumination being significant in the upper right and left quadrants, than in the case of the selection of the function Plat, figure 5d For night urban lighting, for example, the light beam F has a substantially zero intensity pattern in the upper right and left quadrants of the same plane x, y.

Un mode de commande préférentiel de la sélection d'une facette optique et de la fonction d'éclairage/signalisation associée à celle-ci est maintenant décrit en liaison avec les figures 6a et 6 b.A preferred mode of control of the selection of an optical facet and of the lighting / signaling function associated therewith is now described in connection with the Figures 6a and 6 b.

Sur la figure 6a, on considère la sélection de la fonction d'éclairage/signalisation Plat, à partir d'une fonction d'éclairage/signalisation Autoroute par exemple, lors d'un passage du véhicule d'une circulation autoroutière à une circulation urbaine par exemple. Cette commutation et sélection de fonction peut-être effectuée soit à l'initiative du conducteur du véhicule, soit automatiquement.On the figure 6a , we consider the selection of the function of lighting / signaling Flat, from a lighting / signaling function Autoroute for example, during a passage of the vehicle from a motorway traffic to an urban traffic for example. This switching and function selection can be carried out either on the initiative of the driver of the vehicle or automatically.

On considère, en relation avec la figure 3b, un polyèdre optique 1 implémentant cinq fonctions d'éclairage/signalisation pour lesquelles la référence codée initiale Ci est ainsi 02 et dont la références codée finale Cf est donc 05.We consider, in relation to the figure 3b , an optical polyhedron 1 implementing five lighting / signaling functions for which the initial coded reference Ci is thus 02 and whose final coded reference Cf is therefore 05.

La commutation est exécutée, ainsi que décrit précédemment, par détermination du sens de rotation du polyèdre optique 1, dans cette situation le sens rétrograde, en raison du fait que le nombre d'arcs de commutation par rotation dans le sens direct est supérieur à la moitié du nombre total de fonctions implémentées, ainsi que décrit précédemment dans la description.The switching is performed, as described above, by determining the direction of rotation of the optical polyhedron 1, in this situation the retrograde direction, because the number of switching arcs by rotation in the forward direction is greater than the half of the total number of functions implemented, as previously described in the description.

Selon un aspect remarquable du dispositif objet de l'invention, la commutation de chaque facette optique successive selon la séquence représentée en figure 6a, notée 02, 01, 05 est exécutée avec un temps de commutation par facette optique limité, par exemple inférieur ou égal à 500 millisecondes. On comprend, en particulier, que ce mode de commutation permet de supprimer sensiblement tout effet secondaire de transitoire de commutation optique lié à la rotation des facettes optiques du polyèdre optique 1. À titre d'exemple non limitatif on indique que l'intervalle de temps entre la commutation de deux facettes successives peut être pris très inférieur à la durée de commutation d'une facette optique.According to a remarkable aspect of the device according to the invention, the switching of each successive optical facet according to the sequence represented in FIG. figure 6a , denoted 02, 01, 05 is executed with a limited optical facet switching time, for example less than or equal to 500 milliseconds. In particular, it can be understood that this switching mode makes it possible to substantially eliminate any transient secondary effect of optical switching linked to the rotation of the optical facets of the optical polyhedron 1. By way of nonlimiting example, it is indicated that the time interval between the switching of two successive facets can be taken much lower than the switching time of an optical facet.

En outre, ainsi que représenté en figure 6b, la commande de commutation et de sélection d'une facette optique, ainsi que décrit précédemment en relation avec la figure 6a, peut consister, avantageusement, à moduler l'intensité du courant délivré à la source lumineuse S pour atténuer, sinon supprimer, l'intensité délivrée à cette dernière pendant le temps de commutation de la facette considérée. Sur la figure 6b, on a considéré à titre d'exemple le même processus et la même séquence de commutation que dans le cas de la figure 6a, l'intensité du courant délivré à la source lumineuse S pendant le processus de commutation de chaque facette étant amené sensiblement à la valeur nulle. Le chronogramme d'intensité correspondant délivrée à la source lumineuse S est représenté en trait mixte sur la figure 6b.In addition, as represented in figure 6b , the switching control and selection of an optical facet, as described above in connection with the figure 6a , may advantageously consist in modulating the intensity of the current delivered to the light source S to attenuate, if not suppress, the intensity delivered to the latter during the switching time of the facet considered. On the figure 6b the same process and switching sequence as in the case of figure 6a , the intensity of the current delivered to the light source S during the switching process of each facet being brought substantially to the zero value. The corresponding intensity chronogram delivered to the light source S is represented in dashed line on the figure 6b .

Une description plus détaillée d'un mode de mise en oeuvre préférentiel non limitatif du dispositif objet de l'invention sera maintenant donnée en liaison avec les figures 7a, 7b et 7c.A more detailed description of a nonlimiting preferred mode of implementation of the device which is the subject of the invention will now be given in connection with the figures 7a , 7b and 7c .

La figure 7a représente une vue de dessus du dispositif objet de l'invention tel que représenté en figure 1, dans le mode de mise en oeuvre préférentiel précité. Les mêmes références désignent les mêmes éléments. Le plan de la figure 7a est le plan y, z de la figure 1.The figure 7a represents a view from above of the device that is the subject of the invention as represented in figure 1 , in the preferred embodiment mentioned above. The same references designate the same elements. The plan of the figure 7a is the plane y, z of the figure 1 .

En outre, selon un aspect remarquable de ce dernier, la plieuse de faisceau, c'est-à-dire le polyèdre optique 1, et, le cas échéant, le moteur d'entraînement en rotation de celui-ci sont montés sur une platine 3 mobile en translation dans un la direction y orthogonale à l'axe optique ZZ de l'ensemble incluant le premier foyer f1 et le deuxième foyer f2. On comprend ainsi, en référence à la figure 7a, que le bord plieur/transmetteur BP étant placé sensiblement au niveau du deuxième foyer f2, la translation précitée est opérée pour la totalité du bord plieur/transmetteur BP dans le plan focal de la lentille de focalisation L. La translation précitée permet ainsi de décaler l'ensemble du faisceau lumineux F dans le plan de la figure 7a soit dans le plan contenant les directions y et z de la figure précitée. Ceci permet d'effectuer un décalage en azimut de l'axe du faisceau lumineux F délivré par la lentille de focalisation L. On comprend, en particulier, que l'amplitude de décalage dy du bord plieur/transmetteur BP et de la coupure de ce dernier, lorsqu'une coupure est présente, est relativement faible, comprise entre +/ - 10 mm par exemple, mais que ce décalage permet un décalage angulaire important du faisceau lumineux F à des fins de poursuite d'un véhicule tiers par exemple ainsi qu'il sera décrit ci-après.In addition, according to a remarkable aspect of the latter, the beam folder, that is to say the optical polyhedron 1, and, where appropriate, the drive motor in rotation thereof are mounted on a plate 3 movable in translation in a direction y orthogonal to the optical axis ZZ of the assembly including the first focus f1 and the second focus f2. We thus understand, with reference to the figure 7a , that the folding edge / transmitter BP being placed substantially at the second focus f2, the aforementioned translation is operated for the entire folding edge / BP transmitter in the focal plane of the focusing lens L. The aforementioned translation and allows to shift the entire light beam F in the plane of the figure 7a either in the plane containing the directions y and z of the aforementioned figure. This makes it possible to make an azimuth shift of the axis of the light beam F delivered by the focusing lens L. In particular, it is understood that the offset amplitude dy of the folding / transmitting edge BP and the cutting of this last, when a cutoff is present, is relatively low, between +/- 10 mm for example, but this offset allows a significant angular offset of the light beam F for tracking purposes of a third vehicle for example as well as it will be described below.

Sur la figure 7a, on à représenté, outre la platine 3 sur laquelle est monté à rotation le polyèdre optique 1, entraîné en rotation par le moteur 20 et commandé par le module de commande 21 b, un moteur d'entraînement en translation, noté 4. Ce dernier est de préférence un moteur à courant continu, en raison de la précision de commande de ce type de moteur. L'arbre de sortie du moteur à courant continu précité peut avantageusement être couplé à un système réducteur, non représenté au dessin, afin de permettre le déplacement en translation de l'ensemble formé par la platine 3 et le polyèdre optique 1. Le système de transmission par réducteur ou engrenage, de type classique, ne sera pas décrit en détail.On the figure 7a , in addition to the plate 3 on which is rotatably mounted the optical polyhedron 1, driven in rotation by the motor 20 and controlled by the control module 21 b, a drive motor in translation, denoted 4. The latter is preferably a DC motor, because of the control accuracy of this type of motor. The output shaft of the aforementioned direct current motor may advantageously be coupled to a reduction system, not shown in the drawing, to enable the displacement in translation of the assembly formed by the plate 3 and the Optical polyhedron 1. The transmission system by gearbox or gear, of conventional type, will not be described in detail.

Le dispositif objet de l'invention, tel que représenté en figure 7a, permet d'effectuer une poursuite d'éclairement d'un véhicule tiers VT, aux fins d'empêcher tout éblouissement du conducteur de ce dernier dans les conditions ci-après.The device which is the subject of the invention, as represented in figure 7a , makes it possible to carry out an illumination tracking of a third-party vehicle VT, in order to prevent any glare from the driver of the latter under the following conditions.

Dans ce but, le module de commande 21 b, tel que représenté en figure 7a, présente l'architecture spécifique complétée, telle que représentée en figure 7b. En particulier, une caméra est prévue embarquée sur un véhicule équipé du dispositif objet de l'invention, véhicule noté VE. L'équipement de ce dernier consiste en un dispositif conforme à l'objet de l'invention appliqué à chacun des phares avant du véhicule équipé. On comprend, en particulier, qu'alors qu'une caméra et une unité de commande uniques sont utilisées pour un véhicule équipé donné, le phare avant gauche et droit de ce dernier comporte, le cas échéant, un module de commande 21 b indépendant alloué à chaque phare respectif. Sur la figure 7b seul un module de commande 21 b à été représenté, afin de ne pas surcharger le dessin.For this purpose, the control module 21b, as shown in FIG. figure 7a , presents the specific architecture completed, as represented in figure 7b . In particular, a camera is provided on board a vehicle equipped with the device object of the invention, vehicle noted VE. The equipment of the latter consists of a device according to the object of the invention applied to each of the headlights of the equipped vehicle. It is understood, in particular, that while a single camera and a control unit are used for a given equipped vehicle, the left and right front headlight thereof includes, if necessary, an independent control module 21 b allocated at each respective lighthouse. On the figure 7b only a control module 21b has been shown, so as not to overload the drawing.

Au module de commande 21 b précité est associée une unité de commande DBL 22 laquelle est directement connectée à l'unité de commande générale du véhicule. Le module de commande 21 exécute la sélection de faisceau, c'est-à-dire de fonction d'éclairage/signalisation comparable au module de commande de sélection de faisceau 21 représenté en figure 1.The above-mentioned control module 21b is associated with a DBL control unit 22 which is directly connected to the general control unit of the vehicle. The control module 21 performs the beam selection, i.e., lighting / signaling function comparable to the beam selection control module 21 shown in FIG. figure 1 .

On comprend, en particulier, qu'en raison de la rapidité et de la flexibilité de commutation du choix de la fonction d'éclairage/signalisation par simple rotation du polyèdre optique 1, ainsi que l'écrit précédemment dans la description, la sélection d'un faisceau spécifique pour chacun des phares avant droit et gauche du véhicule équipé VE permet la création d'une zone sombre ZS et de déplacer en poursuite cette zone sombre en fonction du déplacement relatif du véhicule tiers VT vis-à-vis du véhicule équipé VE, ainsi qu'illustré en figure 7c.It is understood, in particular, that because of the speed and flexibility of switching the choice of the lighting / signaling function by simple rotation of the optical polyhedron 1, as previously written in the description, the selection of a specific beam for each of the left and right front headlights VE equipped vehicle allows the creation of a dark area ZS and move in pursuit this dark area depending on the relative movement of the vehicle third VT vis-à-vis the vehicle equipped VE, as illustrated in Figure 7c .

Sur la figure précitée, différentes positions relatives du véhicule tiers VT et du véhicule équipé VE sont représentées aux positions 1 à 5.In the above-mentioned figure, different relative positions of the third-party vehicle VT and the VE-equipped vehicle are represented in positions 1 to 5.

En position 1, la caméra détecte le véhicule tiers VT en position lointaine. Les faisceaux lumineux droit Fd et gauche Fg sont tous deux commutés sur la fonction d'éclairage/signalisation de type ADB de type L. Les faisceaux précités présentent le diagramme d'iso-intensité tel que représenté en figure 5d, symétriques par rapport à l'axe longitudinal du véhicule équipé VE.In position 1, the camera detects the third party vehicle VT in the far position. The right light beams Fd and left Fg are both switched to the function The above-mentioned beams show the iso-intensity diagram as represented in FIG. figure 5d , symmetrical with respect to the longitudinal axis of VE equipped vehicle.

La fonction de poursuite est mise en route par la caméra et exécutée par l'unité de commande et bien entendu, le module de commande 22, lequel commande le déplacement en translation du polyèdre optique 1, par l'intermédiaire du moteur 4, pour décaler ,en fonction de l'approche du véhicule tiers VT, le faisceau droit Fd angulairement vers la gauche. Cette opération est exécutée par commande du moteur 4 et poursuivie jusqu'à la position 3 du véhicule tiers VT, correspondant sensiblement à la distance minimale d'éclairement pour un faisceau lumineux de type L. Pendant l'approche du véhicule tiers VT, le faisceau gauche Fg n'est pas modifié. Lors de l'entrée du véhicule tiers VT dans la zone d'éclairement en distance minimale du faisceau droit Fd, laquelle correspond d'ailleurs sensiblement à la zone d'éclairement en distance minimale du faisceau gauche Fg, le faisceau droit peut-être commuté par rotation du polyèdre optique 1 pour sélectionner, par exemple, la fonction d'éclairage/signalisation Code pour le faisceau droit Fd, ainsi que représenté en position 4.The tracking function is started by the camera and executed by the control unit and of course, the control module 22, which controls the translational movement of the optical polyhedron 1, via the motor 4, to shift , depending on the approach of the third vehicle VT, the right beam Fd angularly to the left. This operation is performed by controlling the engine 4 and continued to the position 3 of the third vehicle VT, corresponding substantially to the minimum illumination distance for a light beam type L. During the approach of the third vehicle VT, the beam left Fg is not modified. When the third vehicle VT enters the minimum distance illumination zone of the right beam Fd, which moreover corresponds substantially to the minimum distance illumination zone of the left beam Fg, the right beam may be switched by rotating the optical polyhedron 1 to select, for example, the lighting / signaling function Code for the right beam Fd, as shown in position 4.

Enfin, lorsque le véhicule tiers VT a terminé le croisement du véhicule équipé VE, le faisceau droit Fd peut à nouveau être commuté, ainsi que le faisceau gauche Fg, par sélection de la fonction d'éclairage/signalisation Route par exemple, pour chacun des faisceaux précités.Finally, when the third vehicle VT has completed the crossing of the VE equipped vehicle, the right beam Fd can be switched again, and the left beam Fg, by selecting the Route lighting / signaling function for example, for each of the aforementioned bundles.

On comprend bien entendu que le processus de poursuite du véhicule tiers VT n' est pas limité à la circulation d'un véhicule tiers en sens inverse du véhicule équipé. Ce processus s'applique également pour tout véhicule tiers précédant le véhicule équipé VE, dont ce dernier se rapproche. Les séquences de commutation de faisceau et de poursuite sont alors adaptées en conséquence.It will of course be understood that the process of tracking the third-party vehicle VT is not limited to the circulation of a third-party vehicle in the opposite direction to the equipped vehicle. This process also applies to any third-party vehicle preceding the VE-equipped vehicle, which VE is approaching. The beam switching and tracking sequences are then adapted accordingly.

On comprend enfin que la fonction de poursuite, connue en tant que telle de l'homme de l'art, ne sera pas décrite en détail mais que cette fonction peut être appliquée en combinaison à tout type de faisceau lumineux présentant une dissymétrie longitudinale d'éclairement permettant de créer une zone sombre ZS.Finally, it is understood that the tracking function, known as such to those skilled in the art, will not be described in detail but that this function can be applied in combination to any type of light beam having a longitudinal asymmetry of illumination to create a dark area ZS.

Claims (11)

Dispositif d'éclairage/signalisation par faisceau lumineux multifonction pour véhicule automobile, comportant au moins un collecteur elliptique (R) à double foyer (f1, f2), une source lumineuse (S) placée au voisinage d'un des foyers, et une lentille de projection (L) du faisceau lumineux selon un faisceau d'éclairage/signalisation (F), caractérisé en ce qu'il comporte en outre : - une plieuse de faisceau multifonctions, formée par un polyèdre optique (1), ledit polyèdre optique étant muni d'un nombre supérieur à deux de facettes optiques, chaque facette optique étant munie d'un bord plieur/transmetteur de faisceau (BP) générateur d'une fonction spécifique d'éclairage/signalisation, ledit polyèdre (1) étant placé sur le trajet du faisceau lumineux (F) entre ledit collecteur (R) et ladite lentille de projection (L), au voisinage dudit deuxième foyer (f2), et mobile au moins en rotation autour d'un axe de rotation (YY) orthogonal à l'axe optique (ZZ) de l'ensemble incluant le dit premier et ledit deuxième foyer ; et - des moyens (2) de sélection et de commande d'au moins une facette optique et du bord plieur/transmetteur de faisceau (BP) associé à celle-ci pour ramener ledit bord plieur/transmetteur de faisceau (BP) en position d'interception dudit faisceau lumineux au voisinage dudit deuxième foyer (f2) par commande de déplacement en rotation dudit polyèdre optique (1). Multifunction light-beam lighting / signaling device for a motor vehicle, comprising at least one bifocal elliptical collector (R) (f1, f2), a light source (S) placed in the vicinity of one of the foci, and a lens projection device (L) of the light beam according to a lighting / signaling beam (F), characterized in that it further comprises: a multifunctional beam bender formed by an optical polyhedron (1), said optical polyhedron being provided with a greater than two number of optical facets, each optical facet being provided with a bending edge / beam transmitter (BP) generator a specific lighting / signaling function, said polyhedron (1) being placed in the path of the light beam (F) between said collector (R) and said projection lens (L), in the vicinity of said second focus (f2) and movable at least in rotation about an axis of rotation (YY) orthogonal to the optical axis (ZZ) of the assembly including said first and said second focus; and means (2) for selecting and controlling at least one optical facet and the folding edge / beam transmitter (BP) associated therewith for returning said folding edge / beam transmitter (BP) to the position of interception of said light beam in the vicinity of said second focus (f2) by controlling rotational movement of said optical polyhedron (1). Dispositif selon la revendication 1, caractérisé en ce que, pour un système d'éclairage/signalisation à quatre fonctions, la section droite dudit polyèdre optique (1) est inscrite dans un carré, à chaque côté du carré étant associés une facette optique et un bord plieur/transmetteur (BP) spécifique permettant le pliage du faisceau lumineux selon un faisceau de code, un faisceau ADB, un faisceau de route et un faisceau plat, respectivement.Device according to claim 1, characterized in that , for a lighting / signaling system with four functions, the cross-section of said optical polyhedron (1) is inscribed in a square, at each side of the square being associated an optical facet and a specific folding / transmitting edge (BP) for folding the light beam according to a code beam, an ADB beam, a driving beam and a flat beam, respectively. Dispositif selon la revendication 1, caractérisé en ce que, pour un système d'éclairage/signalisation à cinq fonctions, la section droite dudit polyèdre optique (1) est inscrite dans un pentagone, à chaque côté du pentagone étant associés une facette optique et un bord plieur/transmetteur spécifique (BP) permettant le pliage du faisceau lumineux, une facette optique et un bord plieur/transmetteur spécifique (BP) à la fonction d'éclairage/signalisation d'autoroute étant insérés entre la facette optique et le bord plieur/transmetteur spécifique (BP) du faisceau de code et la facette optique et le bord plieur/transmetteur spécifique du faisceau ADB respectivement.Device according to claim 1, characterized in that , for a lighting / signaling system with five functions, the cross-section of said optical polyhedron (1) is inscribed in a pentagon, on each side of the pentagon being associated a facet an optical facet and a specific bending / transmitting edge (BP) to the highway lighting / signaling function being inserted between the optical facet and the specific bender / transmitter (BP) edge of the code beam and the optical facet and the bender / specific transmitter edge of the ADB beam respectively. Dispositif selon la revendication 1, caractérisé en ce que pour un système d'éclairage signalisation à six fonctions, la section droite dudit polyèdre optique (1) est inscrite dans un hexagone, à chaque côté de l'hexagone étant associés une facette optique et un bord plieur/transmetteur spécifique (BP) permettant le pliage du faisceau lumineux, une facette optique et un bord plieur/transmetteur spécifique à la fonction d'éclairage/signalisation d'éclairage diurne étant insérés entre la facette optique et le bord plieur/transmetteur spécifique du faisceau plat et la facette optique et le bord plieur/transmetteur spécifique du faisceau de code respectivement.Device according to claim 1, characterized in that for a six-function signaling lighting system, the cross-section of said optical polyhedron (1) is inscribed in a hexagon, on each side of the hexagon being associated an optical facet and a specific folding / transmitting edge (BP) for folding the light beam, an optical facet and a folding / transmitting edge specific to the daylight lighting / signaling function being inserted between the optical facet and the specific folding / transmitting edge the flat beam and the optical facet and the folding edge / specific transmitter of the code beam respectively. Dispositif selon l'une des revendications 1 à 4, caractérisé en ce que ledit polyèdre optique (1) est constitué par un matériau plastique, chaque facette optique et le bord plieur/transmetteur spécifique (BP) y relatif étant formés par extrusion et munis d'un revêtement réfléchissant, partiellement réfléchissant ou d'un évidement.Device according to one of claims 1 to 4, characterized in that said optical polyhedron (1) is constituted by a plastic material, each optical facet and the specific folding / transmitting edge (BP) thereon being formed by extrusion and provided with a reflective, partially reflective coating or a recess. Dispositif selon l'une des revendications 1 à 5, caractérisé en ce que lesdits moyens de sélection et de commande (2) comportent au moins : - un moteur d'entraînement en rotation (20) dudit polyèdre optique (1), par incrément d'arc de rotation correspondant à l'angle au centre de chaque facette optique; - un module de commande (21) du moteur d'entraînement en rotation (20). Device according to one of claims 1 to 5, characterized in that said selection and control means (2) comprise at least: a rotation drive motor (20) of said optical polyhedron (1), by increment of arc of rotation corresponding to the angle at the center of each optical facet; - a control module (21) of the rotary drive motor (20). Dispositif selon la revendication 6, caractérisé en ce que la commande d'un incrément d'arc de rotation est exécutée en mode impulsionnel, de durée inférieure ou égale à 500 millisecondes.Device according to claim 6, characterized in that the control of a rotation arc increment is executed in pulse mode, of duration less than or equal to 500 milliseconds. Dispositif selon l'une des revendications 6 ou 7, caractérisé en ce que, lors de la commande par incrément d'arc de rotation de chaque facette optique, ledit module de commande (21) du moteur (20) engendre en outre une impulsion de commande de réduction/extinction de l'intensité du courant électrique délivré à la source lumineuse.Device according to one of claims 6 or 7, characterized in that , when of the control by incremental arc rotation of each optical facet, said control module (21) of the motor (20) further generates a control pulse of reduction / extinction of the intensity of the electric current delivered to the light source . Dispositif selon l'une des revendications 6 à 8, caractérisé en ce que ledit module de commande (21) inclut un module de codage électronique recevant en entrée un signal codé indiquant l'état du faisceau actuel et l'état du faisceau suivant et délivrant un signal de commande du sens aux rotation du moteur (20) et du polyèdre optique (1) et du nombre d'arcs de rotation pour passer de l'état de faisceau actuel à l'état de faisceau suivant.Device according to one of claims 6 to 8, characterized in that said control module (21) includes an electronic coding module receiving as input a coded signal indicating the state of the current beam and the state of the next beam and delivering a direction control signal to the rotation of the motor (20) and the optical polyhedron (1) and the number of rotation arcs to change from the current beam state to the next beam state. Dispositif selon l'une des revendications 1 à 9, caractérisé en ce que ladite plieuse de faisceau est en outre montée sur une platine mobile (3) en translation dans une direction horizontale orthogonale à l'axe optique de l'ensemble incluant ledit premier (f1) et ledit deuxième foyer (f2), la commande en translation de la platine (3) étant effectuée de façon à décaler le bord plieur/transmetteur spécifique dans le plan focal du deuxième foyer et le faisceau d'éclairage en poursuite angulaire azimutale d'un véhicule circulant dans le même sens ou en sens inverse.Device according to one of claims 1 to 9, characterized in that said beam folder is further mounted on a movable plate (3) in translation in a horizontal direction orthogonal to the optical axis of the assembly including said first ( f1) and said second focus (f2), the translational control of the plate (3) being carried out so as to shift the specific folding / transmitting edge in the focal plane of the second focus and the illumination beam in azimuthal angular tracking. 'a vehicle traveling in the same direction or in the opposite direction. Dispositif selon les revendications 1 et 10, caractérisé en ce que lesdits moyens de sélection et de commande comportent en outre un moteur de déplacement en translation de la platine et de la plieuse de faisceau, commandé par un module de commande piloté par une unité de commande et une caméra.Device according to claims 1 and 10, characterized in that said selection and control means further comprise a motor for translational movement of the plate and the beam bender, controlled by a control module controlled by a control unit and a camera.
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EP2244007A1 (en) 2009-04-24 2010-10-27 Valeo Vision Optical device for an automobile

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Publication number Priority date Publication date Assignee Title
EP2853804A1 (en) * 2013-09-30 2015-04-01 Valeo Vision Lighting and/or signalling module with a plurality of rotary optical systems
FR3025151A1 (en) * 2014-08-29 2016-03-04 Valeo Vision METHOD FOR CONTROLLING A BRIGHT BEAM AND LIGHTING AND / OR SIGNALING MODULE THEREOF
EP2990264A3 (en) * 2014-08-29 2016-03-09 Valeo Vision Method for controlling a light beam and corresponding lighting and/or signalling module
FR3028005A1 (en) * 2014-10-30 2016-05-06 Aml Systems SEMI-ELLIPTICAL PROJECTOR WITH MEANS OF MOTION LOCATED BEYOND THE MOBILE OPTICAL ELEMENT
FR3028002A1 (en) * 2014-10-30 2016-05-06 Aml Systems SEMI-ELLIPTICAL PROJECTOR WITH MOBILE MIRROR FOR MOTOR VEHICLE
DE102016105730B4 (en) 2015-03-30 2023-09-28 PO LIGHTING CZECH s.r.o. Device and method for reducing edges of the light image of a headlight and headlight with the device
EP3369987A1 (en) * 2017-03-01 2018-09-05 Hella Saturnus Slovenija, Proizvodnja svetlobne opreme za motorna in druga vozila, d.o.o. Vehicle headlamp
EP3382265A1 (en) * 2017-03-30 2018-10-03 LG Electronics Inc. Lamp for vehicle
US10501012B2 (en) 2017-03-30 2019-12-10 Lg Electronics Inc. Lamp for vehicle, and vehicle
CN109027956A (en) * 2017-04-14 2018-12-18 武汉流塑自动化装备有限公司 A kind of adaptive front lamp dimming mechanism

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FR2977927A1 (en) 2013-01-18
FR2977927B1 (en) 2013-08-23
EP2546569A3 (en) 2013-03-13
EP2546569B1 (en) 2014-03-12

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