EP3201518A1 - Lighting device comprising two zones, intended for a motor vehicle, and light equipped with such a lighting device - Google Patents

Lighting device comprising two zones, intended for a motor vehicle, and light equipped with such a lighting device

Info

Publication number
EP3201518A1
EP3201518A1 EP15771660.6A EP15771660A EP3201518A1 EP 3201518 A1 EP3201518 A1 EP 3201518A1 EP 15771660 A EP15771660 A EP 15771660A EP 3201518 A1 EP3201518 A1 EP 3201518A1
Authority
EP
European Patent Office
Prior art keywords
light
zone
transmission surface
dispersive
light beam
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.)
Withdrawn
Application number
EP15771660.6A
Other languages
German (de)
French (fr)
Inventor
Pierre Albou
Loïc Boinet
Boubacar Sagna
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
Original Assignee
Valeo Vision SAS
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP3201518A1 publication Critical patent/EP3201518A1/en
Withdrawn legal-status Critical Current

Links

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
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
    • F21S41/13—Ultraviolet light; Infrared light
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
    • B60Q1/00—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor
    • B60Q1/26—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic
    • B60Q1/2607—Arrangement of optical signalling or lighting devices, the mounting or supporting thereof or circuits therefor the devices being primarily intended to indicate the vehicle, or parts thereof, or to give signals, to other traffic comprising at least two indicating lamps
    • 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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/16—Light sources where the light is generated by photoluminescent material spaced from a primary light generating element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/2605—Refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/30—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by reflectors
    • F21S43/31—Optical layout 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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/40—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the combination of reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
    • F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
    • F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/30—Semiconductor lasers

Definitions

  • Two-zone luminous device for a motor vehicle and a lamp equipped with such a luminous device.
  • the present invention relates to a two-zone light device for a motor vehicle, and a fire, in particular an anti-fog, provided with such a light device.
  • Motor vehicle lights generally located at the rear of the vehicle, are light devices that include one or more light sources and an ice that shuts the fire.
  • the light source emits light rays to form a light beam that is directed towards the ice to produce an illuminating surface that transmits light to the outside of the vehicle.
  • the color of the illuminating surface is characteristic of the function or type of fire.
  • a white illuminated surface indicates that the light is a reverse light, that an amber illuminated surface is a direction indicator, and that a red illuminated surface is a traffic light.
  • rear position or a stop light the stop light being of a more intense brightness.
  • the rear of a vehicle has a plurality of illuminating surfaces, each illuminating surface having a color specific to each function.
  • the light source has a light intensity chosen with respect to the type of fire.
  • Each of the illuminating surfaces being furthermore produced by at least one different light source, the number of light devices on the vehicle is multiplied.
  • the light sources are, for example, light-emitting diodes. This large number of light sources has an impact on the cost of manufacturing the lamps, especially when the light sources are light-emitting diodes or laser diodes.
  • the configuration and positioning of the illuminating surfaces may furthermore be limited, certain configurations of illuminating surfaces being difficult to obtain, since it is necessary to ensure that the light sources illuminate the corresponding illuminating surface without illuminating an illuminating surface intended for another function. .
  • the invention therefore aims to obtain a light device configured to reduce the number of light sources on a vehicle and to provide new possibilities for layout and design of different lights.
  • the invention relates to a dual-zone light device, particularly for a motor vehicle, comprising a transmission surface capable of transmitting light rays and at least one light source capable of emitting light rays to form a beam of light towards the transmission surface.
  • the device is remarkable in that it further comprises distribution means configured to, on the one hand, distribute the light beam on a first dispersive zone of the transmission surface, and on the other hand, distribute the beam of light. light on a second dispersive zone of the transmission surface, the first dispersive zone being able to transmit the light beam with a first opening angle, and the second dispersive zone being able to transmit the light beam with a second angle of 'opening.
  • the device uses the same light source (s) to illuminate two different dispersive zones. It is therefore avoided to have to multiply the number of light sources for different functions.
  • each dispersive zone can fulfill a different function, the distribution means serving to direct the light beam of the light source towards one or the other of the zones.
  • the device In addition, it is possible to easily arrange the illuminating surfaces and to create new fire designs thanks to the device, the positioning of the sources with respect to the illuminating surface that one wishes to obtain, which poses no problem.
  • the device thus simplifies the design of the lights.
  • the first opening angle and the second opening angle have different values
  • the distribution means are configured to alternately distribute the light beam on the first and on the second zone at a frequency that is not perceptible to the eye
  • the first and / or second dispersive zone comprises dispersive patterns
  • the dispersive patterns have a shape of a pad distributed uniformly over the transmission surface
  • the pads have a curvature
  • the curvature of the pads has a constant radius of curvature
  • the pads of the first zone and of the second zone have different radii of curvature
  • the first and / or second dispersive zone comprises holographic patterns
  • the distribution means are means for scanning the transmission surface, configured to scan the transmission surface with a scanning amplitude corresponding to the dimensions of the dispersive zone over which the beam is distributed,
  • the scanning means are provided with one or two mobile micro-mirrors configured to scan the transmission surface by the light beam in a first direction and / or a second direction substantially perpendicular to the first direction,
  • the light source comprises at least one laser diode
  • the distribution means are a matrix of micro-mirrors
  • the light source comprises at least one light-emitting diode
  • the light source is of constant intensity
  • said device comprises an optical system configured to collimate the light rays coming from the light source to form the light beam
  • said device comprises an ice including the transmission surface.
  • the invention also relates to a fire comprising such a two-zone light device.
  • FIG. 1 schematically illustrating a perspective view of an embodiment of a device according to the invention
  • FIG. 2 schematically illustrating a view from above of the embodiment of FIG. 1,
  • FIG. 3 schematically illustrating an ice-cream equipped with two zones
  • FIG. 4 schematically illustrating the opening angle of the beams produced by the two zones
  • Figures 1 and 2 show an embodiment of a motor vehicle light, for example a rear light, comprising a light device 1 according to the invention.
  • the light device 1 comprises a light source 2 capable of emitting light rays to form a light beam and a transmission surface 3 capable of transmitting the light rays.
  • the light source is of constant intensity, but it can also be of variable intensity depending on the desired fire function.
  • the transmission surface 3 is for example arranged on the ice referenced 6 closing the fire.
  • the transmission surface 3 is the inner face of the glass 6. It may also be a separate element of the glass 6, for example a transmission screen arranged in the fire in front of the ice 6.
  • the light beam which comes from the light source 2 is intended to illuminate the transmission surface 3.
  • the light source 2 is a laser source comprising, for example, a laser diode, emitting radiation whose wavelength is chosen to obtain the color corresponding to the function of the light on the 6.
  • a wavelength conversion device for example a phosphor plate, is arranged in the path of the light beam to transform the wavelength of the laser radiation and thus obtain the desired color.
  • the light source 2 may also comprise an optical device combining in one single beam several laser radiation, for example using optical fibers or devices taking advantage of the different polarizations of different laser sources or dichroic mirrors.
  • the light source 2 is one or more electroluminescent diodes.
  • the device 1 is provided with an optical system 5 configured to collimate the light rays coming from the source 2 in order to form the beam of light.
  • the optical system 5 is for example a single collimation lens, and may also include a reflector.
  • the light beam can project on the transmission face 3 a light trace which has a shape of dot, wider spot, or even an oblong mark.
  • the transmission surface 3 is arranged on the glass 6 which closes the fire and comprises at least two dispersive zones, a first dispersive zone 10 capable of transmitting the beam of light with a first opening angle 12 and a second dispersive zone 1 1 capable of transmitting the light beam with a second opening angle 13.
  • a first dispersive zone 10 capable of transmitting the beam of light with a first opening angle 12
  • a second dispersive zone 1 1 capable of transmitting the light beam with a second opening angle 13.
  • Each dispersive zone corresponds to a different function of the fire.
  • the first zone 10 may correspond to a fog lamp, and the second zone 1 1 to a position light.
  • the zones 10, 11 comprise, for example, dispersive patterns distributed on the transmission face 3.
  • the dimensions of the dispersive patterns are chosen so as to fulfill the function of fire.
  • Each function must meet the intensity and angle of projection of the light beam.
  • the patterns are different on each zone so that the dispersed beam has a different opening angle after each zone.
  • the dispersive units are preferably distributed uniformly over each of the two zones 10, 11 of the transmission surface 3.
  • the pads 9 are substantially square, preferably with curved sides of a length 14 between 0.3 and 2mm.
  • FIG. 6 shows the exit face of a pad 9 whose curvature causes the deviation of the light rays passing therethrough. The deflection is effected at an angle ⁇ relative to the axis 15 of the pad 9.
  • the curvature of the pad 9 is chosen as a function of the angle ⁇ that is desired, and therefore of the first and second angles of desired opening.
  • the pads of the first zone and the second zone have for example different radii of curvature.
  • the device 1 comprises distribution means configured to, firstly, distribute the beam of light on the first dispersive zone 10 and / or the second dispersive zone 1 1 of the transmission surface 3.
  • the distribution means can direct the light beam, or on the first dispersive zone 10 to obtain a first function of the fire, either on the second dispersive zone 1 1 to have a second function of the fire, or alternatively on the first 10 and on the second zone 1 1.
  • the two zones 10, 11 are illuminated, the two functions being used simultaneously.
  • the alternative distribution is performed at a frequency not perceptible by the eye.
  • an observer has the illusion that both areas are illuminated at the same time.
  • the first dispersive zone 10 transmits the light beam with a first aperture angle 12, and the second dispersive zone 11 transmits the light beam with a second aperture angle 13.
  • Each aperture angle opening 12, 13 corresponds to a function of the fire.
  • the first function is a fog lamp and the second function is a rear position lamp, the first opening angle 12 being smaller than the second opening angle 13.
  • the light beam is more intense after the first dispersive zone 10 than after the second dispersive zone 1 1.
  • the distribution means are scanning means 4 configured to ensure scanning by the light beam of the transmission surface 3.
  • the scanning is performed at a sufficiently high speed so that the human eye does not perceive the movement of the light trace on the transmission surface 3, and observes a substantially constant and uniform illumination of the scanned portion of the lens 6.
  • the scanning is performed on the area 10, 1 1 selected.
  • simultaneous illumination of the two zones 10, 1 1 the scanning is performed on each zone one after the other, either in whole or in parts (for example by lines), in a iterative process.
  • the scanning means 4 then have a sufficient scanning frequency to simultaneously scan each zone individually and pass from one zone to another without the human eye perceiving it.
  • the transmission surface 3 may advantageously be configured to have a sufficient dispersion of the beam in case of malfunction of the scanning means 4. Indeed, if the scanning is interrupted, the laser beam is frozen in one direction. It is therefore necessary to ensure the safety of an observer, especially concerning his eyes, at least from a certain distance from the fire.
  • the dispersion is sufficient to ensure this safety after about fifteen centimeters, for example.
  • other alternative or complementary safety means may be provided in case of failures of the laser source or the scanning system which generated an eye hazard for fire watchers.
  • the light beam coming from the light source 2 is, before striking the transmission surface 3, preferably returned by the scanning means 4 to a first mirror 7 which reflects it to a second mirror 8.
  • the second mirror 8 reflects on turn the light beam to the transmission surface 3 of the ice 6 of the fire.
  • the two mirrors 7, 8 serve to fold the optical path of the light beam to obtain a compact fire while allowing the light beam to scan the transmission surface 3 with a near normal incidence.
  • FIG. 2 represents the luminous device 1 with the path of the light beam from the light source 2 to the mirror 6.
  • the scanning means 4 are a mobile micro-mirror, enabling the transmission surface 3 to be scanned by reflection of the light beam in a first direction of the transmission surface 3, which is, for example horizontal.
  • the micro-mirror is animated a periodic movement produced by an actuator (not shown). The movement of the micro-mirror is operated around an axis of rotation orthogonal to the first direction so that the light trace of the light beam sweeps the transmission surface 3 along said first direction.
  • the scanning means 4 are also configured to scan the transmission surface 3 with the light beam in a second direction.
  • the second direction is preferably substantially perpendicular to the first direction to produce a movement of the beam which moves easily on the transmission surface 3.
  • the micro-mirror is also configured to scan the transmission surface 3 with the light beam in the second direction. In other words, it is the same micro-mirror which sweeps the transmission surface 3 with the light beam in both directions.
  • the micromirror therefore follows another movement, for example rotation about a second axis of rotation perpendicular to the previous one.
  • the micro-mirror allows the light trace of the light beam to scan both horizontally and vertically the transmission surface 3.
  • an alternative embodiment is to use a second micro-mirror to scan the light beam in the second direction.
  • the scanning means 4 are provided with two micromirrors arranged one after the other on the optical path of the beam, each having the function of scanning the light beam transmission surface 3 according to one of two directions.
  • the micro-mirrors mentioned as scanning means are for example MEMS type (for "Micro-Electro-Mechanical Systems” or English electromechanical system).
  • the invention is not limited to this scanning means and can use other kinds of scanning means, such as a series of mirrors arranged on a rotating element, the rotation of the element generating a scan of the surface transmission by the light beam.
  • the distribution means are, for example, a micro-mirror matrix of the DMD (for "Digital Micromirror Device") type, which directs the light beam by reflection.
  • the light beam is reflected in two directions, either towards the first dispersive zone or towards the second dispersive zone 11.
  • Each micro-mirror can pivot between two fixed positions, a first position in which the incident light rays are reflected towards the first dispersive zone, and a second position in which the incident light rays are reflected towards the second dispersive zone 10, 1 1.
  • the two fixed positions are oriented in the same way for all the micro-mirrors and form between them a characteristic angle of the matrix of micro-mirrors.
  • this device can advantageously be used to display pictograms, which can in particular be dynamic.
  • the distribution means are then configured to distribute the light beam on the transmission surface so as to show the pictogram (s).

Landscapes

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

Abstract

The invention relates to a lighting device comprising two zones, intended in particular for a motor vehicle (30), including a transmission surface (3) capable of transmitting light rays and at least one light source (2) capable of emitting light rays in order to form a light beam in the direction of the transmission surface (3). The device also comprises distribution means configured both to distribute the light beam over a first dispersive zone (10) of the transmission surface (3) and to distribute the light beam over a second dispersive zone (11) of the transmission surface (3), in which the first dispersive zone (10) can transmit the light beam with a first aperture angle (12) and the second dispersive zone (11) can transmit the light beam with a second aperture angle (13).

Description

Dispositif lumineux à deux zones pour véhicule automobile, et feu muni d'un tel dispositif lumineux.  Two-zone luminous device for a motor vehicle, and a lamp equipped with such a luminous device.

La présente invention concerne un dispositif lumineux à deux zones pour véhicule automobile, et un feu, notamment antibrouillard, muni d'un tel dispositif lumineux. The present invention relates to a two-zone light device for a motor vehicle, and a fire, in particular an anti-fog, provided with such a light device.

Les feux de véhicule automobile, généralement situés à l'arrière du véhicule, sont des dispositifs lumineux qui comprennent une ou plusieurs sources de lumière et une glace qui ferme le feu. De façon simplifiée, la source lumineuse émet des rayons lumineux pour former un faisceau lumineux qui est dirigé vers la glace afin de produire une plage éclairante qui transmet la lumière à l'extérieur du véhicule. La couleur de la plage éclairante est caractéristique de la fonction ou du type de feu. Ainsi, on sait qu'une plage éclairante de couleur blanche indique que le feu est un feu de marche arrière, qu'une plage éclairante de couleur ambre est un indicateur de direction, et qu'une plage éclairante de couleur rouge est un feu de position arrière ou un feu stop, le feu stop étant d'une luminosité plus intense. Il existe aussi les feux rouges antibrouillard, dont l'intensité est encore plus forte pour être visible dans des conditions climatiques difficiles, telles que du brouillard, des fortes pluies ou des chutes de neige. En plus de la couleur, ces feux doivent répondre à des réglementations d'intensité et de visibilité notamment. Ainsi, l'arrière d'un véhicule comporte une pluralité de plages éclairantes, chaque plage éclairante ayant une couleur propre à chaque fonction. La source de lumière a une intensité lumineuse choisie par rapport au type de feu. Chacune des plages éclairantes étant en outre produite par au moins une source lumineuse différente, on multiplie le nombre de dispositifs lumineux sur le véhicule. Les sources lumineuses sont par exemple des diodes électroluminescentes. Ce nombre important de sources lumineuses a un impact sur le coût de fabrication des feux, notamment lorsque les sources lumineuses sont des diodes électroluminescentes ou des diodes laser. Motor vehicle lights, generally located at the rear of the vehicle, are light devices that include one or more light sources and an ice that shuts the fire. In a simplified manner, the light source emits light rays to form a light beam that is directed towards the ice to produce an illuminating surface that transmits light to the outside of the vehicle. The color of the illuminating surface is characteristic of the function or type of fire. Thus, it is known that a white illuminated surface indicates that the light is a reverse light, that an amber illuminated surface is a direction indicator, and that a red illuminated surface is a traffic light. rear position or a stop light, the stop light being of a more intense brightness. There are also fog lights, which are even stronger to be visible in difficult weather conditions, such as fog, heavy rain or snow. In addition to color, these lights must comply with regulations of intensity and visibility in particular. Thus, the rear of a vehicle has a plurality of illuminating surfaces, each illuminating surface having a color specific to each function. The light source has a light intensity chosen with respect to the type of fire. Each of the illuminating surfaces being furthermore produced by at least one different light source, the number of light devices on the vehicle is multiplied. The light sources are, for example, light-emitting diodes. This large number of light sources has an impact on the cost of manufacturing the lamps, especially when the light sources are light-emitting diodes or laser diodes.

La configuration et le positionnement des plages éclairantes peuvent en outre être limités, certaines configurations de plages éclairantes étant difficiles à obtenir, car il faut s'assurer que les sources lumineuses éclairent bien la plage éclairante correspondante sans éclairer une plage éclairante destinée à une autre fonction. L'invention vise donc à obtenir un dispositif lumineux configuré pour réduire le nombre de sources lumineuses sur un véhicule et pour apporter de nouvelles possibilités de disposition et de design des différents feux. The configuration and positioning of the illuminating surfaces may furthermore be limited, certain configurations of illuminating surfaces being difficult to obtain, since it is necessary to ensure that the light sources illuminate the corresponding illuminating surface without illuminating an illuminating surface intended for another function. . The invention therefore aims to obtain a light device configured to reduce the number of light sources on a vehicle and to provide new possibilities for layout and design of different lights.

Pour cela, l'invention concerne un dispositif lumineux à deux zones, notamment pour véhicule automobile, comprenant une surface de transmission apte à transmettre des rayons lumineux et au moins une source de lumière apte à émettre des rayons lumineux pour former un faisceau de lumière vers la surface de transmission. Le dispositif est remarquable en ce qu'il comprend en outre des moyens de répartition configurés pour, d'une part, distribuer le faisceau de lumière sur une première zone dispersive de la surface de transmission, et d'autre part, distribuer le faisceau de lumière sur une deuxième zone dispersive de la surface de transmission, la première zone dispersive étant apte à transmettre le faisceau de lumière avec un premier angle d'ouverture, et la deuxième zone dispersive étant apte à transmettre le faisceau de lumière avec un deuxième angle d'ouverture. For this, the invention relates to a dual-zone light device, particularly for a motor vehicle, comprising a transmission surface capable of transmitting light rays and at least one light source capable of emitting light rays to form a beam of light towards the transmission surface. The device is remarkable in that it further comprises distribution means configured to, on the one hand, distribute the light beam on a first dispersive zone of the transmission surface, and on the other hand, distribute the beam of light. light on a second dispersive zone of the transmission surface, the first dispersive zone being able to transmit the light beam with a first opening angle, and the second dispersive zone being able to transmit the light beam with a second angle of 'opening.

Ainsi, le dispositif utilise la ou les mêmes sources de lumière pour éclairer deux zones dispersives différentes. On évite par conséquent d'avoir à multiplier le nombre de sources de lumière pour des fonctions différentes. En effet, chaque zone dispersive peut remplir une fonction différente, les moyens de répartition servant à orienter le faisceau de lumière de la source de lumière vers l'une ou l'autre des zones. Thus, the device uses the same light source (s) to illuminate two different dispersive zones. It is therefore avoided to have to multiply the number of light sources for different functions. In Indeed, each dispersive zone can fulfill a different function, the distribution means serving to direct the light beam of the light source towards one or the other of the zones.

En outre, il est possible d'agencer aisément les plages éclairantes et de créer des design de feu nouveaux grâce au dispositif, le positionnement des sources par rapport aux plage éclairante que l'on souhaite obtenir ne posant pas de problème. Le dispositif simplifie donc le conception des feux. In addition, it is possible to easily arrange the illuminating surfaces and to create new fire designs thanks to the device, the positioning of the sources with respect to the illuminating surface that one wishes to obtain, which poses no problem. The device thus simplifies the design of the lights.

Selon différents modes de réalisation de l'invention, qui pourront être pris ensemble ou séparément : According to various embodiments of the invention, which may be taken together or separately:

- le premier angle d'ouverture et le deuxième angle d'ouverture ont des valeurs différentes,  the first opening angle and the second opening angle have different values,

- les moyens de répartition sont configurés pour distribuer alternativement le faisceau de lumière sur la première et sur la deuxième zone à une fréquence non perceptible par l'œil, the distribution means are configured to alternately distribute the light beam on the first and on the second zone at a frequency that is not perceptible to the eye,

- la première et/ou la deuxième zone dispersive comporte des motifs dispersifs, the first and / or second dispersive zone comprises dispersive patterns,

- les motifs dispersifs ont une forme de coussinet répartis uniformément sur la surface de transmission,  the dispersive patterns have a shape of a pad distributed uniformly over the transmission surface,

- les coussinets présentent une courbure,  the pads have a curvature,

- la courbure des coussinets présente un rayon de courbure constant,  the curvature of the pads has a constant radius of curvature,

- les coussinets de la première zone et de la deuxième zone ont des rayons de courbure différents,  the pads of the first zone and of the second zone have different radii of curvature,

- la première et/ou la deuxième zone dispersive comporte des motifs holographiques,  the first and / or second dispersive zone comprises holographic patterns,

- les moyens de répartition sont des moyens de balayage de la surface de transmission, configurés pour balayer la surface de transmission avec une amplitude de balayage correspondant aux dimensions de la zone dispersive sur laquelle le faisceau est distribué, the distribution means are means for scanning the transmission surface, configured to scan the transmission surface with a scanning amplitude corresponding to the dimensions of the dispersive zone over which the beam is distributed,

- les moyens de balayage sont munis d'un ou deux micro-miroirs mobiles configurés pour balayer la surface de transmission par le faisceau de lumière selon une première direction et/ou une deuxième direction sensiblement perpendiculaire à la première direction,  the scanning means are provided with one or two mobile micro-mirrors configured to scan the transmission surface by the light beam in a first direction and / or a second direction substantially perpendicular to the first direction,

- la source de lumière comporte au moins une diode laser,  the light source comprises at least one laser diode,

- les moyens de répartitions sont une matrice de micro-miroirs, the distribution means are a matrix of micro-mirrors,

- la source de lumière comporte au moins une diode électroluminescente, the light source comprises at least one light-emitting diode,

- la source de lumière est d'intensité constante,  the light source is of constant intensity,

- ledit dispositif comprend un système optique configuré pour collimater les rayons lumineux provenant de la source de lumière pour former le faisceau de lumière,  said device comprises an optical system configured to collimate the light rays coming from the light source to form the light beam,

- ledit dispositif comprend une glace comportant la surface de transmission.  said device comprises an ice including the transmission surface.

L'invention se rapporte également à un feu comprenant un tel dispositif lumineux à deux zones. The invention also relates to a fire comprising such a two-zone light device.

L'invention sera mieux comprise à la lumière de la description suivante qui n'est donnée qu'à titre indicatif et qui n'a pas pour but de la limiter, accompagnée des dessins joints : The invention will be better understood in the light of the following description which is given for information only and which is not intended to limit it, accompanied by the attached drawings:

- la figure 1 illustrant de façon schématique une vue en perspective d'un mode de réalisation d'un dispositif selon l'invention, FIG. 1 schematically illustrating a perspective view of an embodiment of a device according to the invention,

- la figure 2 illustrant de façon schématique une vue de dessus du mode de réalisation de la figure 1 , FIG. 2 schematically illustrating a view from above of the embodiment of FIG. 1,

- la figure 3 illustrant de façon schématique une glace munie de deux zones, - la figure 4 illustrant de façon schématique l'angle d'ouverture des faisceaux produits par les deux zones, FIG. 3 schematically illustrating an ice-cream equipped with two zones, FIG. 4 schematically illustrating the opening angle of the beams produced by the two zones,

- la figure 5 illustrant de façon schématique un agrandissement d'une partie de la surface de transmission munie de coussinets, - la figure 6 illustrant de façon schématique le passage de rayons lumineux dans un coussinet.  - Figure 5 schematically illustrating an enlargement of a portion of the transmission surface provided with pads, - Figure 6 schematically illustrating the passage of light rays in a pad.

Les figures 1 et 2 représentent un mode de réalisation d'un feu de véhicule automobile, par exemple d'un feu arrière, comprenant un dispositif lumineux 1 selon l'invention. Le dispositif lumineux 1 comprend une source de lumière 2 apte à émettre des rayons lumineux pour former un faisceau de lumière et une surface de transmission 3 apte à transmettre les rayons lumineux. De préférence, la source de lumière est d'intensité constante, mais elle peut aussi être d'intensité variable selon la fonction du feu souhaitée. Figures 1 and 2 show an embodiment of a motor vehicle light, for example a rear light, comprising a light device 1 according to the invention. The light device 1 comprises a light source 2 capable of emitting light rays to form a light beam and a transmission surface 3 capable of transmitting the light rays. Preferably, the light source is of constant intensity, but it can also be of variable intensity depending on the desired fire function.

La surface de transmission 3 est par exemple agencée sur la glace référencée 6 de fermeture du feu. Dans une première variante, représentée sur les figures 1 et 2, la surface de transmission 3 est la face interne de la glace 6. Elle peut aussi être un élément distinct de la glace 6, par exemple un écran de transmission agencé dans le feu devant la glace 6. Le faisceau de lumière qui est issu de la source de lumière 2 est destiné à venir éclairer la surface de transmission 3. The transmission surface 3 is for example arranged on the ice referenced 6 closing the fire. In a first variant, shown in Figures 1 and 2, the transmission surface 3 is the inner face of the glass 6. It may also be a separate element of the glass 6, for example a transmission screen arranged in the fire in front of the ice 6. The light beam which comes from the light source 2 is intended to illuminate the transmission surface 3.

Dans le mode de réalisation des figures 1 et 2, la source de lumière 2 est une source laser comprenant par exemple une diode laser, émettant un rayonnement dont la longueur d'onde est choisie pour obtenir la couleur correspondant à la fonction du feu sur la glace 6. Alternativement, on dispose un dispositif de conversion de longueur d'onde, par exemple une plaque phosphore, sur le trajet du faisceau de lumière, pour transformer la longueur d'onde du rayonnement laser et obtenir ainsi la couleur souhaitée. La source de lumière 2 peut aussi comprendre un dispositif optique combinant en un seul faisceau plusieurs rayonnements lasers, par exemple à l'aide de fibres optiques ou de dispositifs tirant profit des polarisations différentes de différentes sources laser ou de miroirs dichroïques. Dans un second mode de réalisation, non représenté sur les figures, la source de lumière 2 est une ou plusieurs diodes électroluminescentes. In the embodiment of FIGS. 1 and 2, the light source 2 is a laser source comprising, for example, a laser diode, emitting radiation whose wavelength is chosen to obtain the color corresponding to the function of the light on the 6. Alternatively, a wavelength conversion device, for example a phosphor plate, is arranged in the path of the light beam to transform the wavelength of the laser radiation and thus obtain the desired color. The light source 2 may also comprise an optical device combining in one single beam several laser radiation, for example using optical fibers or devices taking advantage of the different polarizations of different laser sources or dichroic mirrors. In a second embodiment, not shown in the figures, the light source 2 is one or more electroluminescent diodes.

Pour ces deux modes de réalisation, le dispositif 1 est pourvu d'un système optique 5 configuré pour collimater les rayons lumineux provenant de la source 2 afin de former le faisceau de lumière. Le système optique 5 est par exemple une lentille unique de collimation, et peut aussi comporter un réflecteur. For these two embodiments, the device 1 is provided with an optical system 5 configured to collimate the light rays coming from the source 2 in order to form the beam of light. The optical system 5 is for example a single collimation lens, and may also include a reflector.

Selon la source de lumière 2 et le système optique 5 choisis, le faisceau de lumière peut projeter sur la face de transmission 3 une trace lumineuse qui a une forme de point, de tache plus large, voire une marque oblongue. Depending on the light source 2 and the optical system 5 chosen, the light beam can project on the transmission face 3 a light trace which has a shape of dot, wider spot, or even an oblong mark.

Selon l'invention, tel que cela est représenté sur les figures 3 et 4, la surface de transmission 3 est agencée sur la glace 6 qui ferme le feu et comprend au moins deux zones dispersives, une première zone dispersive 10 apte à transmettre le faisceau de lumière avec un premier angle d'ouverture 12 et une deuxième zone dispersive 1 1 apte à transmettre le faisceau de lumière avec un deuxième angle d'ouverture 13. Dans cette invention, on peut également envisager un nombre plus important de zones, et donc autant de fonctions correspondantes. According to the invention, as shown in FIGS. 3 and 4, the transmission surface 3 is arranged on the glass 6 which closes the fire and comprises at least two dispersive zones, a first dispersive zone 10 capable of transmitting the beam of light with a first opening angle 12 and a second dispersive zone 1 1 capable of transmitting the light beam with a second opening angle 13. In this invention, it is also possible to envisage a larger number of zones, and therefore as many corresponding functions.

Chaque zone dispersive correspond à une fonction différente du feu. Par exemple, la première zone 10 peut correspondre à un feu antibrouillard, et la deuxième zone 1 1 à un feu de position. Cependant, d'autres combinaisons et choix de fonctions de feux sont possibles. Pour être dispersives, les zones 10, 1 1 comprennent par exemple des motifs dispersifs répartis sur la face de transmission 3. Ainsi, lorsque les rayons lumineux collimatés du faisceau de lumière rencontrent la surface de transmission 3 et la traversent, ils sont dispersés dans toutes les directions. Les dimensions des motifs dispersifs sont choisies de manière à remplir la fonction du feu. Chaque fonction doit répondre à des règlements d'intensité et d'angle de projection du faisceau de lumière. Les motifs sont différents sur chaque zone de sorte que le faisceau dispersé ait un angle d'ouverture différent après chaque zone. Les motifs dispersifs sont de préférence répartis uniformément sur chacune des deux zone 10, 1 1 de la surface de transmission 3. Each dispersive zone corresponds to a different function of the fire. For example, the first zone 10 may correspond to a fog lamp, and the second zone 1 1 to a position light. However, other combinations and choices of fire functions are possible. To be dispersive, the zones 10, 11 comprise, for example, dispersive patterns distributed on the transmission face 3. Thus, when the collimated light rays of the light beam meet the transmission surface 3 and pass through it, they are dispersed in all directions. directions. The dimensions of the dispersive patterns are chosen so as to fulfill the function of fire. Each function must meet the intensity and angle of projection of the light beam. The patterns are different on each zone so that the dispersed beam has a different opening angle after each zone. The dispersive units are preferably distributed uniformly over each of the two zones 10, 11 of the transmission surface 3.

Ils ont par exemple chacun une forme de coussinet 9 présentant une courbure, ici convexe, de rayon de courbure constant, tel que cela est représenté sur la figure 5. Les coussinets 9 sont sensiblement carrés, avec de préférence des côtés courbes d'une longueur 14 comprise entre 0.3 et 2mm. La figure 6 montre la face de sortie d'un coussinet 9 dont la courbure provoque la déviation des rayons lumineux le traversant. La déviation s'effectue selon un angle a par rapport à l'axe 15 du coussinet 9. La courbure du coussinet 9 est choisie en fonction de l'angle a que l'on souhaite, et par conséquent des premier et deuxième angles d'ouverture voulus. Les coussinets de la première zone et de la deuxième zone ont par exemple des rayons de courbure différents. For example, they each have a form of pad 9 having a curvature, here convex, of constant radius of curvature, as shown in FIG. 5. The pads 9 are substantially square, preferably with curved sides of a length 14 between 0.3 and 2mm. FIG. 6 shows the exit face of a pad 9 whose curvature causes the deviation of the light rays passing therethrough. The deflection is effected at an angle α relative to the axis 15 of the pad 9. The curvature of the pad 9 is chosen as a function of the angle α that is desired, and therefore of the first and second angles of desired opening. The pads of the first zone and the second zone have for example different radii of curvature.

D'autres motifs dispersifs peuvent être utilisés, tels les motifs holographiques. Les motifs holographiques sont configurés pour disperser le faisceau lumineux passant par la première et/ou la deuxième zone. En outre, le dispositif 1 comprend des moyens de répartition configurés pour, d'une part, distribuer le faisceau de lumière sur la première zone dispersive 10 et/ou sur la deuxième zone dispersive 1 1 de la surface de transmission 3. Autrement dit, les moyens de répartition permettent d'orienter le faisceau lumineux, soit sur la première zone dispersive 10 pour obtenir une première fonction du feu, soit sur la deuxième zone dispersive 1 1 pour avoir une deuxième fonction du feu, soit alternativement sur la première 10 et sur la deuxième zone 1 1 . Dans le dernier cas, les deux zones 10, 1 1 sont éclairées, les deux fonctions étant utilisées simultanément. De préférence, la distribution alternative est effectuée à une fréquence non perceptible par l'œil. Ainsi, un observateur a l'illusion que les deux zones sont éclairées en même temps. Other dispersive patterns may be used, such as holographic patterns. The holographic patterns are configured to disperse the light beam passing through the first and / or second area. In addition, the device 1 comprises distribution means configured to, firstly, distribute the beam of light on the first dispersive zone 10 and / or the second dispersive zone 1 1 of the transmission surface 3. In other words, the distribution means can direct the light beam, or on the first dispersive zone 10 to obtain a first function of the fire, either on the second dispersive zone 1 1 to have a second function of the fire, or alternatively on the first 10 and on the second zone 1 1. In the latter case, the two zones 10, 11 are illuminated, the two functions being used simultaneously. Preferably, the alternative distribution is performed at a frequency not perceptible by the eye. Thus, an observer has the illusion that both areas are illuminated at the same time.

Comme le montre la figure 4, la première zone dispersive 10 transmet le faisceau de lumière avec un premier angle d'ouverture 12, et la deuxième zone dispersive 1 1 transmet le faisceau de lumière avec un deuxième angle d'ouverture 13. Chaque angle d'ouverture 12, 13 correspond à une fonction du feu. Dans cet exemple, la première fonction est un feu antibrouillard et la deuxième fonction est un feu de position arrière, le premier angle d'ouverture 12 étant plus petit que le deuxième angle d'ouverture 13. Ainsi, pour une source lumineuse d'intensité constante, le faisceau lumineux est plus intense après la première zone dispersive 10 qu'après la deuxième zone 1 1 dispersive. As shown in FIG. 4, the first dispersive zone 10 transmits the light beam with a first aperture angle 12, and the second dispersive zone 11 transmits the light beam with a second aperture angle 13. Each aperture angle opening 12, 13 corresponds to a function of the fire. In this example, the first function is a fog lamp and the second function is a rear position lamp, the first opening angle 12 being smaller than the second opening angle 13. Thus, for a light source of intensity constant, the light beam is more intense after the first dispersive zone 10 than after the second dispersive zone 1 1.

Dans le premier mode de réalisation des figures 1 et 2 utilisant un laser, les moyens de répartition sont des moyens de balayage 4 configurés pour assurer le balayage par le faisceau lumineux de la surface de transmission 3. Le balayage est accompli à une vitesse suffisamment grande pour que l'œil humain ne perçoive pas le déplacement de la trace lumineuse sur la surface de transmission 3, et observe un éclairage sensiblement constant et uniforme de la partie balayée de la glace 6. Le balayage est effectué sur la zone 10, 1 1 sélectionnée. Dans le cas d'un éclairage simultané des deux zones 10, 1 1 , le balayage est effectué sur chaque zone l'une après l'autre, soit en entier, soit par parties (par lignes par exemple), dans un processus itératif. Les moyens de balayage 4 ont alors une fréquence de balayage suffisante pour à la fois balayer chaque zone individuellement et passer d'une zone à l'autre sans que l'œil humain ne le perçoive. Pour ce mode de réalisation utilisant une source laser, la surface de transmission 3 pourra avantageusement être configurée pour avoir une dispersion suffisante du faisceau en cas de disfonctionnement des moyens de balayages 4. En effet, si le balayage est interrompu, le faisceau laser est figé dans une direction. Il est donc nécessaire d'assurer la sécurité d'un observateur, notamment concernant ses yeux, au moins à partir d'une certaine distance du feu. Avantageusement, la dispersion est suffisante pour assurer cette sécurité après une quinzaine de centimètres par exemple. Bien entendu, d'autres moyens de sécurité alternatifs ou complémentaires peuvent être prévus en cas de défaillances de la source laser ou du système de balayage qui générèrent un risque oculaire pour des observateurs du feu. In the first embodiment of FIGS. 1 and 2 using a laser, the distribution means are scanning means 4 configured to ensure scanning by the light beam of the transmission surface 3. The scanning is performed at a sufficiently high speed so that the human eye does not perceive the movement of the light trace on the transmission surface 3, and observes a substantially constant and uniform illumination of the scanned portion of the lens 6. The scanning is performed on the area 10, 1 1 selected. In the case of simultaneous illumination of the two zones 10, 1 1, the scanning is performed on each zone one after the other, either in whole or in parts (for example by lines), in a iterative process. The scanning means 4 then have a sufficient scanning frequency to simultaneously scan each zone individually and pass from one zone to another without the human eye perceiving it. For this embodiment using a laser source, the transmission surface 3 may advantageously be configured to have a sufficient dispersion of the beam in case of malfunction of the scanning means 4. Indeed, if the scanning is interrupted, the laser beam is frozen in one direction. It is therefore necessary to ensure the safety of an observer, especially concerning his eyes, at least from a certain distance from the fire. Advantageously, the dispersion is sufficient to ensure this safety after about fifteen centimeters, for example. Of course, other alternative or complementary safety means may be provided in case of failures of the laser source or the scanning system which generated an eye hazard for fire watchers.

Le faisceau lumineux provenant de la source de lumière 2 est, avant de frapper la surface de transmission 3, de préférence renvoyé par les moyens de balayage 4 sur un premier miroir 7 qui le réfléchit vers un deuxième miroir 8. Le deuxième miroir 8 réfléchit à son tour le faisceau lumineux vers la surface de transmission 3 de la glace 6 du feu. Les deux miroirs 7, 8 servent à replier le chemin optique du faisceau lumineux pour obtenir un feu compact tout en permettant au faisceau lumineux de balayer la surface de transmission 3 avec une incidence proche de la normale. La figure 2 représente le dispositif lumineux 1 avec le trajet du faisceau lumineux depuis la source de lumière 2 jusqu'à la glace 6. The light beam coming from the light source 2 is, before striking the transmission surface 3, preferably returned by the scanning means 4 to a first mirror 7 which reflects it to a second mirror 8. The second mirror 8 reflects on turn the light beam to the transmission surface 3 of the ice 6 of the fire. The two mirrors 7, 8 serve to fold the optical path of the light beam to obtain a compact fire while allowing the light beam to scan the transmission surface 3 with a near normal incidence. FIG. 2 represents the luminous device 1 with the path of the light beam from the light source 2 to the mirror 6.

Dans l'exemple des figures 1 et 2, les moyens de balayage 4 sont un micro-miroir mobile, permettant de balayer la surface de transmission 3 par réflexion du faisceau lumineux selon une première direction de la surface de transmission 3, qui est par exemple horizontale. Le micro-miroir est animé d'un mouvement périodique produit par un actionneur (non représenté). Le mouvement du micro-miroir est opéré autour d'un axe de rotation orthogonal à la première direction afin que la trace lumineuse du faisceau lumineux balaye la surface de transmission 3 selon ladite première direction. In the example of FIGS. 1 and 2, the scanning means 4 are a mobile micro-mirror, enabling the transmission surface 3 to be scanned by reflection of the light beam in a first direction of the transmission surface 3, which is, for example horizontal. The micro-mirror is animated a periodic movement produced by an actuator (not shown). The movement of the micro-mirror is operated around an axis of rotation orthogonal to the first direction so that the light trace of the light beam sweeps the transmission surface 3 along said first direction.

Lorsque la trace lumineuse du faisceau lumineux est petite, et a une forme de point lumineux ou de tâche, les moyens de balayage 4 sont également configurés pour balayer la surface de transmission 3 avec le faisceau lumineux selon une deuxième direction. La deuxième direction est de préférence sensiblement perpendiculaire à la première direction afin de produire un mouvement du faisceau qui se déplace aisément sur la surface de transmission 3. When the light trace of the light beam is small, and has a shape of light spot or task, the scanning means 4 are also configured to scan the transmission surface 3 with the light beam in a second direction. The second direction is preferably substantially perpendicular to the first direction to produce a movement of the beam which moves easily on the transmission surface 3.

Dans le mode de réalisation des figures 1 et 2, le micro-miroir est également configuré pour balayer la surface de transmission 3 avec le faisceau lumineux selon la deuxième direction. Autrement dit, c'est le même micro-miroir qui balaye la surface de transmission 3 avec le faisceau lumineux selon les deux directions. Le micro-miroir suit donc un autre mouvement, par exemple de rotation autour d'un deuxième axe de rotation perpendiculaire au précédent. Ainsi, le micro-miroir permet à la trace lumineuse du faisceau lumineux de balayer à la fois horizontalement et verticalement la surface de transmission 3. In the embodiment of Figures 1 and 2, the micro-mirror is also configured to scan the transmission surface 3 with the light beam in the second direction. In other words, it is the same micro-mirror which sweeps the transmission surface 3 with the light beam in both directions. The micromirror therefore follows another movement, for example rotation about a second axis of rotation perpendicular to the previous one. Thus, the micro-mirror allows the light trace of the light beam to scan both horizontally and vertically the transmission surface 3.

Une variante de réalisation, non représentée sur les figures, consiste à utiliser un deuxième micro-miroir pour faire balayer le faisceau lumineux selon la deuxième direction. Dans ce cas, les moyens de balayage 4 sont munis de deux micro-miroirs disposés l'un à la suite de l'autre sur le chemin optique du faisceau, chacun ayant pour fonction de faire balayer au faisceau lumineux la surface de transmission 3 selon une des deux directions. Dans la description, les micro-miroirs mentionnés comme moyen de balayage sont par exemple de type MEMS (pour « Micro-Electro-Mechanical Systems » en anglais ou microsystème électromécanique). Cependant, l'invention n'est nullement limitée à ce moyen de balayage et peut utiliser d'autres sortes de moyens de balayage, telle une série de miroirs agencés sur un élément rotatif, la rotation de l'élément engendrant un balayage de la surface de transmission par le faisceau lumineux. An alternative embodiment, not shown in the figures, is to use a second micro-mirror to scan the light beam in the second direction. In this case, the scanning means 4 are provided with two micromirrors arranged one after the other on the optical path of the beam, each having the function of scanning the light beam transmission surface 3 according to one of two directions. In the description, the micro-mirrors mentioned as scanning means are for example MEMS type (for "Micro-Electro-Mechanical Systems" or English electromechanical system). However, the invention is not limited to this scanning means and can use other kinds of scanning means, such as a series of mirrors arranged on a rotating element, the rotation of the element generating a scan of the surface transmission by the light beam.

Pour le deuxième mode de réalisation non représenté sur les figures, et utilisant des diodes électroluminescentes, les moyens de répartition sont par exemple une matrice de micro-miroir de type DMD (pour « Digital Micromirror Device » en anglais), qui dirige le faisceau lumineux par réflexion. Le faisceau lumineux est réfléchi au choix selon deux directions, soit vers la première zone 10 dispersive, soit vers la deuxième zone 1 1 dispersive. Chaque micro miroir peut pivoter entre deux positions fixes, une première position dans laquelle les rayons lumineux incidents sont réfléchis vers la première zone dispersive, et une deuxième position dans laquelle les rayons lumineux incidents sont réfléchis vers la deuxième zone dispersive 10, 1 1 . Les deux positions fixes sont orientées de la même manière pour tous les micro miroirs et forment entre elles un angle caractéristique de la matrice de micro miroirs. For the second embodiment not shown in the figures, and using light-emitting diodes, the distribution means are, for example, a micro-mirror matrix of the DMD (for "Digital Micromirror Device") type, which directs the light beam by reflection. The light beam is reflected in two directions, either towards the first dispersive zone or towards the second dispersive zone 11. Each micro-mirror can pivot between two fixed positions, a first position in which the incident light rays are reflected towards the first dispersive zone, and a second position in which the incident light rays are reflected towards the second dispersive zone 10, 1 1. The two fixed positions are oriented in the same way for all the micro-mirrors and form between them a characteristic angle of the matrix of micro-mirrors.

En outre, ce dispositif peut avantageusement être utilisé pour afficher des pictogrammes, qui peuvent notamment être dynamiques. Les moyens de répartition sont alors configurés pour distribuer le faisceau lumineux sur la surface de transmission de manière à faire apparaître le ou les pictogrammes. In addition, this device can advantageously be used to display pictograms, which can in particular be dynamic. The distribution means are then configured to distribute the light beam on the transmission surface so as to show the pictogram (s).

Claims

REVENDICATIONS : CLAIMS: 1 . Dispositif lumineux (1 ) à deux zones, notamment pour véhicule automobile (30), comprenant une surface de transmission (3) apte à transmettre des rayons lumineux et au moins une source de lumière (2) apte à émettre des rayons lumineux pour former un faisceau de lumière vers la surface de transmission (3), caractérisé en ce qu'il comprend en outre des moyens de répartition configurés pour, d'une part, distribuer le faisceau de lumière sur une première zone dispersive (10) de la surface de transmission (3), et d'autre part, distribuer le faisceau de lumière sur une deuxième zone dispersive (1 1 ) de la surface de transmission (3), la première zone dispersive (10) étant apte à transmettre le faisceau de lumière avec un premier angle d'ouverture (12), et la deuxième zone dispersive (1 1 ) étant apte à transmettre le faisceau de lumière avec un deuxième angle d'ouverture (13). 1. Luminous device (1) with two zones, in particular for a motor vehicle (30), comprising a transmission surface (3) capable of transmitting light rays and at least one light source (2) able to emit light rays to form a light source. beam of light towards the transmission surface (3), characterized in that it further comprises distribution means configured to, on the one hand, distribute the light beam on a first dispersive zone (10) of the surface of transmission (3), and on the other hand, distributing the light beam on a second dispersive zone (1 1) of the transmission surface (3), the first dispersive zone (10) being able to transmit the beam of light with a first opening angle (12), and the second dispersive zone (1 1) being able to transmit the light beam with a second opening angle (13). 2. Dispositif selon la revendication 1 , caractérisé en ce que le premier angle d'ouverture (12) et le deuxième angle d'ouverture (13) ont des valeurs différentes. 2. Device according to claim 1, characterized in that the first opening angle (12) and the second opening angle (13) have different values. 3. Dispositif selon la revendication 1 ou 2, caractérisé en ce que les moyens de répartition sont configurés pour distribuer alternativement le faisceau de lumière sur la première (10) et sur la deuxième zone (1 1 ) à une fréquence non perceptible par l'œil. 3. Device according to claim 1 or 2, characterized in that the distribution means are configured to alternately distribute the light beam on the first (10) and on the second zone (1 1) at a frequency not perceptible by the eye. 4. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la première (10) et/ou la deuxième zone dispersive (1 1 ) comporte des motifs dispersifs. 4. Device according to any one of the preceding claims, characterized in that the first (10) and / or the second dispersive zone (1 1) comprises dispersive patterns. 5. Dispositif selon la revendication 4, caractérisé en ce que les motifs dispersifs ont une forme de coussinet (9) répartis uniformément sur la surface de transmission (3) et présentant une courbure. 5. Device according to claim 4, characterized in that the dispersive patterns have a form of pad (9) uniformly distributed on the transmission surface (3) and having a curvature. 6. Dispositif selon la revendication 5, caractérisé en ce que la courbure des coussinets (9) présente un rayon de courbure constant. 6. Device according to claim 5, characterized in that the curvature of the pads (9) has a constant radius of curvature. 7. Dispositif selon la revendication 5 ou 6, caractérisé en ce que les coussinets (9) de la première zone (10) et de la deuxième zone (1 1 ) ont des rayons de courbure différents. 7. Device according to claim 5 or 6, characterized in that the pads (9) of the first zone (10) and the second zone (1 1) have different radii of curvature. 8. Dispositif selon l'une quelconque des revendications 1 à 4, caractérisé en ce que la première (10) et/ou la deuxième zone dispersive (1 1 ) comporte des motifs holographiques. 8. Device according to any one of claims 1 to 4, characterized in that the first (10) and / or the second dispersive zone (1 1) comprises holographic patterns. 9. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que les moyens de répartition sont des moyens de balayage (4) de la surface de transmission (3), configurés pour balayer la surface de transmission (3) avec une amplitude de balayage (12) correspondant aux dimensions de la zone dispersive (10, 1 1 ) sur laquelle le faisceau est distribué. 9. Device according to any one of the preceding claims, characterized in that the distribution means are scanning means (4) of the transmission surface (3), configured to scan the transmission surface (3) with an amplitude. scanning plane (12) corresponding to the dimensions of the dispersive zone (10, 1 1) on which the beam is distributed. 10. Dispositif selon la revendication 9, caractérisé en ce que les moyens de balayage (4) sont munis d'un ou deux micro-miroirs mobiles configurés pour balayer la surface de transmission (3) par le faisceau de lumière selon une première direction et/ou une deuxième direction sensiblement perpendiculaire à la première direction. 10. Device according to claim 9, characterized in that the scanning means (4) are provided with one or two mobile micro-mirrors configured to scan the transmission surface (3) by the light beam in a first direction and or a second direction substantially perpendicular to the first direction. 1 1 . Dispositif selon l'une quelconque des revendications 9 et 10, caractérisé en ce que la source de lumière (2) comporte au moins une diode laser. 1 1. Device according to any one of claims 9 and 10, characterized in that the light source (2) comprises at least one laser diode. 12. Dispositif selon l'une quelconque des revendications 1 à 8, caractérisé en ce que les moyens de répartitions sont une matrice de micromiroirs. 12. Device according to any one of claims 1 to 8, characterized in that the distribution means are a matrix of micromirrors. 13. Dispositif selon la revendication 12, caractérisé en ce que la source de lumière (2) comporte au moins une diode électroluminescente. 13. Device according to claim 12, characterized in that the light source (2) comprises at least one light emitting diode. 14. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce que la source de lumière (2) est d'intensité constante. 14. Device according to any one of the preceding claims, characterized in that the light source (2) is of constant intensity. 15. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend un système optique (5) configuré pour collimater les rayons lumineux provenant de la source de lumière (2) pour former le faisceau de lumière. 15. Device according to any one of the preceding claims, characterized in that it comprises an optical system (5) configured to collimate the light rays from the light source (2) to form the light beam. 16. Dispositif selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comprend une glace (6) comportant la surface de transmission (3). 16. Device according to any one of the preceding claims, characterized in that it comprises an ice (6) having the transmission surface (3). 17. Feu de véhicule automobile comprenant un dispositif lumineux (1 ) à deux zones selon l'une quelconque des revendications précédentes. 17. Motor vehicle light comprising a light device (1) with two zones according to any one of the preceding claims.
EP15771660.6A 2014-10-02 2015-10-02 Lighting device comprising two zones, intended for a motor vehicle, and light equipped with such a lighting device Withdrawn EP3201518A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1459443A FR3026819A1 (en) 2014-10-02 2014-10-02 TWO-ZONE LUMINOUS DEVICE FOR MOTOR VEHICLE, AND FIRE PROVIDED WITH SUCH A LUMINOUS DEVICE
PCT/EP2015/072838 WO2016050967A1 (en) 2014-10-02 2015-10-02 Lighting device comprising two zones, intended for a motor vehicle, and light equipped with such a lighting device

Publications (1)

Publication Number Publication Date
EP3201518A1 true EP3201518A1 (en) 2017-08-09

Family

ID=52423838

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15771660.6A Withdrawn EP3201518A1 (en) 2014-10-02 2015-10-02 Lighting device comprising two zones, intended for a motor vehicle, and light equipped with such a lighting device

Country Status (7)

Country Link
US (1) US20170307168A1 (en)
EP (1) EP3201518A1 (en)
JP (1) JP2017531902A (en)
KR (1) KR20170067809A (en)
CN (1) CN106794796A (en)
FR (1) FR3026819A1 (en)
WO (1) WO2016050967A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR3066284B1 (en) * 2017-05-11 2019-04-26 Valeo Vision LIGHT DEVICE WITH IMAGE DISPLAY AND PROJECTION
US10222022B2 (en) * 2017-07-06 2019-03-05 Valeo North America, Inc. Covered fiber bundle for lighting modules
JP2019029066A (en) * 2017-07-25 2019-02-21 株式会社小糸製作所 Vehicular lighting fixture
JP6508580B1 (en) * 2017-07-25 2019-05-08 大日本印刷株式会社 Lighting device

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3740627B2 (en) * 1998-04-17 2006-02-01 スタンレー電気株式会社 Vehicle lighting
JP5577138B2 (en) * 2010-04-08 2014-08-20 スタンレー電気株式会社 Vehicle headlamp
DE102010048659B4 (en) * 2010-10-15 2012-05-03 Automotive Lighting Reutlingen Gmbh Lighting device of a motor vehicle
EP2503222B1 (en) * 2011-03-15 2013-05-08 Odelo GmbH Motor vehicle light and method for its operation
JP5702216B2 (en) * 2011-04-22 2015-04-15 株式会社小糸製作所 Optical unit

Also Published As

Publication number Publication date
US20170307168A1 (en) 2017-10-26
FR3026819A1 (en) 2016-04-08
KR20170067809A (en) 2017-06-16
CN106794796A (en) 2017-05-31
WO2016050967A1 (en) 2016-04-07
JP2017531902A (en) 2017-10-26

Similar Documents

Publication Publication Date Title
EP3201048B1 (en) Symbol-displaying signalling device for a motor vehicle, and signal light equipped with such a lighting device
EP3396241B1 (en) Light module with imaging optics optimised for a pixelated spatial modulator, intended for a motor vehicle
EP3466759B1 (en) Light device with image projection and display
EP3225905A1 (en) Rear lighting and/or signalling device for motor vehicle, and rear lighting and/or signalling light provided with such a device
FR2826098A1 (en) LIGHTING OR SIGNALING DEVICE, PARTICULARLY FOR VEHICLE, COMPRISING A PLURALITY OF LIGHT SOURCES
EP2954365A1 (en) Display for displaying a virtual image in the field of view of a vehicle driver and image-generating device for said display
EP3803198B1 (en) Lighting module for automotive vehicle
EP3201518A1 (en) Lighting device comprising two zones, intended for a motor vehicle, and light equipped with such a lighting device
EP3507542B1 (en) Lighting and/or signalling device, in particular for an automotive vehicle
EP2954366A1 (en) Image transmission device for a display and head-up display equipped with said device
EP3190335B1 (en) Luminous device provided with a curved wavelength conversion element, and headlight comprising such a luminous device
EP2829790A2 (en) Lighting system associating white light and light of a different colour
EP3165811A1 (en) Lighting device with two functions and three-dimensional effect, in particular for a motor vehicle, and light provided with such a lighting device
EP2803903B1 (en) Signalling device for a motor vehicle
EP3203139A1 (en) Scanning light device, in particular for a motor vehicle, provided with an element for bending light rays, and headlight comprising such a light device
EP3002502A2 (en) Lighting device provided with dispersive surfaces, and lamp comprising such a lighting device
FR3054023B1 (en) SIGNALING DEVICE FOR A MOTOR VEHICLE, AND SIGNALING LIGHT EQUIPPED WITH SUCH A DEVICE
EP3002503A2 (en) Dual-function lighting device for motor vehicle, and lamp, in particular a fog lamp, provided with such a light device
FR3026824A1 (en) LUMINOUS DEVICE HAVING LIGHT BEAM FOLDING, IN PARTICULAR FOR MOTOR VEHICLE, AND FIRE PROVIDED WITH SUCH A LUMINOUS DEVICE.
FR3077117A1 (en) LUMINOUS MODULE FOR A MOTOR VEHICLE, AND LIGHTING AND / OR SIGNALING DEVICE EQUIPPED WITH SUCH A MODULE
FR3049681A1 (en) LIGHTING AND / OR SIGNALING DEVICE FOR A MOTOR VEHICLE, AND LIGHTING AND / OR SIGNALING LIGHT EQUIPPED WITH SUCH A DEVICE
FR3063396A1 (en) SIGNALING DEVICE FOR A MOTOR VEHICLE, AND SIGNALING LIGHT EQUIPPED WITH SUCH A DEVICE
WO2026082962A1 (en) Lighting system for a motor vehicle, emitting at least two light beams
FR3012573A1 (en) OPTICAL MODULE FOR A VEHICLE PROJECTOR COMPRISING A LASER SOURCE
EP2944514A1 (en) Lighting system for a motor vehicle headlight comprising a plurality of lighting modules

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 20170328

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

AX Request for extension of the european patent

Extension state: BA ME

RIN1 Information on inventor provided before grant (corrected)

Inventor name: ALBOU, PIERRE

Inventor name: BOINET, LOIC

Inventor name: SAGNA, BOUBACAR

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Effective date: 20171107