• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A light module (2) for a motor vehicle comprises at least: - a light source (4), - an optical light guide (6) comprising an input face (8) of the light emitted by the light source and an exit face (10) of the light, the optical guide (6) being arranged to allow light to propagate from its input face (8) to its exit face (10), - an opaque cover (20) ) disposed in the path of the light rays at the output of the optical guide and having at least one window (22) allowing the passage of light, - at least one additional optical element (14) closing the window (22). The light module (2) is characterized in that the additional optical element (14) comprises a convergent optical device (16).
    公开号:FR3054022A1
    申请号:FR1656838
    申请日:2016-07-18
    公开日:2018-01-19
    发明作者:Christophe Valois；Kurt Depoorter；Frederic Luu
    申请人:Valeo Vision Belgique SA；
    IPC主号:
    专利说明:

    © Publication number: 3,054,022 (to be used only for reproduction orders) (© National registration number: 16 56838 ® FRENCH REPUBLIC
    NATIONAL INSTITUTE OF INDUSTRIAL PROPERTY
    COURBEVOIE © Int Cl 8 : F21 V8 / 00 (2017.01), F 21 V 13/00, F21 S 41/19, 43/19
    A1 PATENT APPLICATION
    ©) Date of deposit: 18.07.16. © Applicant (s): VALEO VISION BELGIQUE Company (30) Priority: anonymous— BE. @ Inventor (s): VALOIS CHRISTOPHE, DEPOORTER KURT and LUU FREDERIC. (43) Date of public availability of the request: 19.01.18 Bulletin 18/03. ©) List of documents cited in the report preliminary research: Refer to end of present booklet (© References to other national documents ® Holder (s): VALEO VISION BELGIQUE Société ano- related: nyme. ©) Extension request (s): (© Agent (s): VALEO VISION Limited company.
    FR 3 054 022 - A1
    154 / LIGHT MODULE FOR MOTOR VEHICLE
    ©) A light module (2) for a motor vehicle comprises at least:
    - a light source (4),
    - an optical light guide (6) comprising an inlet face (8) of the light emitted by the light source and an outlet face (10) of the light, the optical guide (6) being arranged to allow the propagation of light from its entry face (8) to its exit face (10),
    - an opaque cover (20) disposed on the path of the light rays at the outlet of the optical guide and comprising at least one window (22) allowing the passage of light,
    - at least one additional optical element (14) closing the window (22).
    The light module (2) is characterized in that the additional optical element (14) comprises a converging optical device (16).

    i
    Motor vehicle light module
    The present invention relates to a light module fitted to a motor vehicle, comprising at least one light source, an optical guide and an additional optical element. The invention finds applications in the field of lighting and / or signaling for a motor vehicle.
    Currently, it is known to use, in road lighting devices or vehicle signaling devices, one or more optical guides associated respectively with a light source, and arranged to propagate from an entry face towards an exit face, by successive total internal reflections, of the rays emitted by the light source, said rays being projected out of the optical guide to form a determined light beam. Such an arrangement can be used with optical guides to perform lighting and / or signaling functions with determined photometric quantities, or even in lighting devices for the passenger compartment of the vehicle.
    The use of these optical guides is part of a context where car manufacturers are more and more eager to create and assign a visual signature to a motor vehicle. The possibility offered, by way of example, of bending these optical guides and of presenting a strip of light, wavy or following the curve of a vehicle, makes it possible to distinguish vehicles by the production of lighting devices and / or interior or exterior signage that can easily differ from one make of vehicle to another.
    The invention thus fits into a double context of stylistic freedom and photometric efficiency of lighting and / or signaling carried out, by proposing an alternative to existing light modules with optical guide (s), which allows the projection of a beam at the output of the light module which is not only in the desired shape but which has suitable photometric quantities, without requiring the use of light sources with high flux.
    A light module for a motor vehicle, according to the invention comprises at least one light source, an optical guide comprising an entry face of the light emitted by the light source and an exit face of the light, the optical guide being arranged to allow the propagation of light from its entry face to its exit face. It further comprises an opaque cover disposed on the path of the light rays at the outlet of the optical guide and comprising at least one window allowing the passage of light, and it comprises at least one additional optical element closing the window. The additional optical element includes a converging optical device.
    The additional optical element comprises an entry surface for the rays emitted from the optical guide and an exit surface for a light beam.
    According to a series of characteristics of the invention, taken alone or in combination, it can be provided that:
    - The converging optical device is arranged on an internal face of the additional optical element turned opposite the exit face of the optical guide;
    - the converging optical device is arranged on the exit surface of the additional optical element;
    - The converging optical device comprises a convex zone directed towards the exit face of the optical guide;
    the convex zone has a radius of curvature defined as a function of the distance between the center of curvature of the convex zone and the exit face of the optical guide;
    - the converging optical device is a cylindrical lens, which extends in particular along a central axis parallel to an axis of elongation of the optical guide;
    - A focal point of the cylindrical lens is centered on the optical guide; it is conceivable that the focus of the cylindrical lens is targeted on the center of the optical guide or on its exit face;
    - the convex area is translucent;
    - the convex zone has a grainy texture;
    - The convex zone can be overmolded on the additional optical element, or else come in one piece with and optical element;
    the converging optical device comprises a transparent border around the convex zone;
    - The window is substantially a hollowed out parallelogram, of dimensions equal to the exit face of the optical guide;
    - the opaque cover comprises a plurality of windows, aligned along an alignment axis perpendicular to the axis of extension of the optical guides;
    - each window is closed by a converging optical device; and in particular, provision may be made for a converging optical device specific to each window;
    - the additional optical element comprises a plurality of aligned converging optical devices;
    each window is associated with an optical guide and / or with its own light source;
    - at least two windows are separated from each other by the opaque cover preventing the passage of light;
    the convex zone of the converging optical device has a radius of curvature defined as a function of the height of the window to which the convex zone corresponds;
    - the additional optical element and the opaque cover form a single piece.
    The invention further relates to a lighting and / or signaling device for a motor vehicle comprising a light module as it has just been presented.
    Other characteristics, details and advantages of the invention will emerge more clearly on reading the description given below by way of indication in relation to the drawings in which:
    FIG. i is a perspective view, seen from three quarters before, of the light module, according to an embodiment of the invention, in which a tip of an optical guide has been made visible, as well as an additional optical element and an opaque cover;
    Figure 2 is a perspective view similar to that of Figure i, in which the additional optical element has been removed, in order to make the windows formed in the opaque cover more visible;
    Figure 3 is a perspective view similar to that of Figure 1, in which the additional optical element has been removed, in order to make the windows formed in the opaque cover more visible;
    Figure 4 is a perspective view, seen from three rear quarters, of the additional optical element and the opaque cover;
    Figure 5 is a detail view of a converging optical device of the additional optical element;
    and Figure 6 is a cross-sectional view of the converging optical device according to one aspect of the invention and the associated light guide.
    The embodiments which are described below are in no way limiting; it is possible in particular to imagine variants of the invention comprising only a selection of characteristics described hereinafter isolated from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage or to differentiate the invention from the prior art.
    A light module 2 according to the invention is capable of emitting an output light beam having a style effect.
    This light module 2 comprises a housing defining a housing in which are arranged at least one light source 4 and at least one optical guide 6, each light source being respectively associated with an optical guide configured to propagate the rays emitted by the source on a given length and to exit them towards the exit of the light module. The housing formed in the housing is closed by placing a closing glass on the housing, the closing glass being configured to be traversed in certain areas by the light rays emitted by the at least one optical guide.
    The light sources 4 each consist of a semiconductor source, and for example a light-emitting diode fixed on a printed circuit board, which can be common to all the light-emitting diodes, and which can in particular be fixed on the module housing. luminous.
    In the example illustrated, each optical guide 6 has a circular section and a curved profile, with a main elongation axis A. The optical guide 6 has an inlet face 8 for the light emitted by the light source 4 and an outlet face 10. The optical guide 6, visible in FIGS. 1, 3 and 4 further comprises a rear reflection face 12, opposite the outlet face 10, which is provided with a succession of prisms.
    The optical guides can be made of a material allowing the propagation of light rays by internal reflection from the entry face towards the exit face, for example poylcarbonate (PC) or polymethyl methacrylate (PMMA) or silicone or glass.
    It is understood that the light rays emitted by a light source penetrate into the corresponding optical guide by the entry face 8 and that they propagate along the tube forming the optical guide by successive total internal reflections, until that these rays meet the prisms of the rear reflection face: this results in a modification of the angle of incidence of the rays and some of them impact the exit face, opposite this rear reflection face 12, with an angle such that they exit the optical guide.
    Such optical guides 6 make it possible to obtain the emission of light whose appearance is substantially homogeneous over the length of the exit face of the optical guide 6, when the latter is in the on state.
    The optical guides 6 are arranged substantially transversely along the light module, along a main elongation axis A, carried by a support 13 which has inclined walls respectively surrounding each of the guides and one end of which is in contact with the guide while the free end widens towards the exit of the light module. These walls form reflectors 28, reflecting the light emitted from the outlet face 10 of the optical guide 6, in the direction of the outlet of the light module. These reflectors 28 are arranged so as to contain the rays emerging from the exit face 10 of the optical guide in a determined angular range, it being understood that the orientation of the reflectors can in particular vary as a function of the position of the optical guide when the light module is installed in the vehicle.
    We will now describe in more detail a first element enabling a particular style effect to be obtained from the light beam at the output of the light module 2, and which comprises an additional optical element 14 and an opaque cover 20, forming the lens of closing the light module 2.
    The additional optical element 14 comprises at least one converging optical device 16 configured to group the rays at the outlet of the corresponding optical guide.
    The converging optical device 16 comprises at least one translucent convex zone 30 formed on the internal face of the additional optical element 14, that is to say the face turned towards the inside of the housing, in the direction of the optical guide. The convex zone 30 is arranged on the passage of the rays emitted at the outlet of the optical guide and reflected by the walls of the support 13, and configured so that the convex part of this convex zone is directed towards the exit face 10 of the optical guide 6 In other words, the convex zone is oriented so that its center of curvature is arranged opposite the optical guide relative to the converging optical device 16.
    As has been specified, preferably, the converging lens is arranged on an entry surface 24 of the additional optical element, also called internal face 24, that is to say facing the exit face 10 of the optical guide 6. In an alternative embodiment, not illustrated, the converging lens can be arranged on an exit surface 26 of the additional optical element 14.
    In the illustrated embodiment, the present translucent convex zone 30 is a cylindrical converging lens. This convergent lens is cylindrical by having a central axis C parallel, or substantially parallel, to the elongation axis A of the optical guide 6. In this way, the convergent lens is configured to concentrate the rays of light coming from the face of outlet 10 and reflected by the walls of the housing 13. It is understood that the cylindrical lens extends over a distance, along the elongation axis A, substantially equal to that of the outlet face of the optical guide 6, so as to recover all the rays. The converging lens, or in other words the convex zone 30, has a radius of curvature defined according to the desired concentration of the emitted rays. For example, the converging lens can have a radius of 10 to 15 mm, and in particular 13 mm. The radius of curvature of the convex region can for example be a function of the distance between the center of curvature of the convex region and the exit face 10 of the optical guide 6.
    More particularly, provision can be made for the focal point of the converging lens to be arranged in the vicinity of the central axis of elongation of the optical guide, or else in the vicinity of the portion of the outlet face 10 closest to the converging lens. .
    In the example illustrated, the cylindrical lens is centered vertically on the optical guide, that is to say that when the light module is in place in the vehicle, the center of the cylindrical lens of the additional optical element 14 and the center of the associated optical guide 6 are arranged at the same height relative to the ground.
    The converging lens comprises at least one zone in which a grainy texture has been produced giving a blurred effect. For example, the grain can have a dimension of 20 μm. We thus seek to reconcile the desired style effect and the optical performance of the module, it being understood that we must avoid having too large a grain because the diffusion would be too great and would make the product ineffective. Furthermore, we take into consideration the fact that the diffusion of the same grain depends on the distance between the optical guide and the grained area.
    This grainy texture can be produced on the surface on the internal face of the lens, or on the external face, that is to say the face turned away from the optical guide.
    The graining of the converging optical device 16 allows the formation, after the rays R (some of which are shown by way of example in FIG. 6) emitted by the light source and propagated by the guide pass through the additional optical element 14, of a light beam at the exit of the light module, via the exit surface 26 of the lens, which is diffuse and homogeneous. The graining of the converging optical device also contributes to preventing view by an outside observer of the arrangement of the optical guide 6 in the light module 2.
    This convex zone 30 is preferably bordered by a flat, transparent border 18, in particular useful when the additional optical element 14 is produced by overmolding of the opaque cover 20. It is understood that it is sought to limit this border as much as possible, which corresponds to the closing zone during overmolding, to obtain the most efficient system possible. In particular, this border must be at least equal to imm.
    The opaque cover 20 forms with the additional optical element 14 a first element covering the assembly of the light module 2. It is understood that the opaque cover aims to prevent the passage of light through it, by not allowing this passage that through at least one window 22 in the center of which is arranged a converging optical device 16.
    This opaque cover 20 may be formed by a coating of opaque material, or else be made of an opaque material. It should be noted that in the illustrated case the opaque cover 20 is molded onto the additional optical element 14, but it will be noted that other means of ίο securing could be implemented and in particular the realization in a single and same piece of the opaque cover 20 and the additional optical element 14 form a single piece.
    Each window 22 is substantially a parallelogram, preferably a rectangle. Each window 22 is associated either with a converging optical device 16, with an optical guide 6 and / or with a clean light source 4.
    A plurality of converging optical devices 16 is arranged on the additional optical element 14, in row along an alignment axis R perpendicular to the elongation axis A of an optical guide, and respectively opposite the exit face 10 of an optical guide 6.
    In the illustrated case, the light module 2 comprises six light sources 4 coupled to six optical guides 6, and a main guide extends over substantially the entire length of the light module, while the other five have shorter, substantially equal lengths. , and are connected together at one of their ends. It follows from this number of six optical guides that the additional optical element 14 covering all of the optical guides 6 comprises for its part six converging optical devices 16, each facing an optical guide 6, in particular of a face of optical guide output 10 6. The six optical guides 6 have lengths of elongation, in particular lengths of different output faces L, decreasing in the up-down or down-up direction, that is to say that the length d elongation of each optical guide 6 is also decreasing in the up-down or up direction.
    And it follows from this number of six optical guides that the opaque cover 20 comprises six windows 22, inside which an optical guide are respectively provided. It will be noted that the windows 22 are aligned parallel to each other along an alignment axis R perpendicular to the elongation axis A of the optical guides 6. The height of the windows is understood as the dimension along the alignment axis R, and the height from window to window may vary. The radius of curvature of the converging optical device 16 may depend on the height of the window to which it corresponds, in order to obtain an identical concentration of the light rays at the outlet of each window.
    As it has just been presented, a light module 2 can be indifferently placed in a lighting and / or signaling device outside or inside a motor vehicle. Depending on the configuration of the lighting and / or final signaling device desired, other alternative embodiments can be envisaged while respecting the context of the invention.
    权利要求:
    Claims (15)
    [1" id="c-fr-0001]
    1. Light module (2) for a motor vehicle, comprising at least:
    - a light source (4),
    - an optical light guide (6) comprising an inlet face (8) of the light emitted by the light source and an outlet face (10) of the light, the optical guide (6) being arranged to allow the propagation of light from its entry face (8) to its exit face (10),
    - an opaque cover (20) disposed on the path of the light rays at the outlet of the optical guide and comprising at least one window (22) allowing the passage of light,
    - at least one additional optical element (14) closing the at least one window (22), the light module (2) being characterized in that the additional optical element (14) comprises a converging optical device (16).
    [2" id="c-fr-0002]
    2. Light module (2) according to the preceding claim, characterized in that the converging optical device (16) is arranged on an internal face (24) of the additional optical element (14) turned opposite the output face ( 10) of the optical guide (6).
    [3" id="c-fr-0003]
    3. Light module (2) according to any one of the preceding claims, characterized in that the converging optical device (16) comprises a convex zone (30) directed towards the exit face (10) of the optical guide (6).
    [4" id="c-fr-0004]
    4- light module (2) according to the preceding claim, characterized in that the convex area (30) has a radius of curvature defined as a function of the distance between the center of curvature of the convex area (30) and the outlet face (10) of the optical guide (6).
    [5" id="c-fr-0005]
    5. Light module (2) according to one of claims 3 or 4, characterized in that the converging optical device (16) is a cylindrical lens.
    [6" id="c-fr-0006]
    6. Light module (2) according to the preceding claim, characterized in that a focus object of the cylindrical lens (30) is centered on the optical guide (6).
    [7" id="c-fr-0007]
    7. Light module (2) according to any one of claims 3 to
    6, characterized in that the convex zone (30) is translucent.
    [8" id="c-fr-0008]
    8. Light module (2) according to any one of claims 3 to
    7, characterized in that the convex zone (30) has a grainy texture.
    [9" id="c-fr-0009]
    9. light module (2) according to any one of claims 3 to
    8, characterized in that the converging optical device (16) comprises a transparent border (18) around the convex zone (30).
    [10" id="c-fr-0010]
    10. Light module (2) according to any one of the preceding claims, characterized in that the opaque cover (20) comprises a plurality of windows (22), aligned along an alignment axis (R) perpendicular to the axis of extension (A) of the optical guides (6).
    [11" id="c-fr-0011]
    11. Light module (2) according to the preceding claim, characterized in that each window (22) is closed by a converging optical device (16).
    [12" id="c-fr-0012]
    12. Light module (2) according to any one of the claims
    5 above, characterized in that the additional optical element (14) comprises a plurality of aligned converging optical devices (16).
    [13" id="c-fr-0013]
    13. Light module (2) any one of claims
    10 above, characterized in that the additional optical element (14) and the opaque cover (20) form a single piece.
    [14" id="c-fr-0014]
    14. Lighting and / or signaling device for a motor vehicle comprising a light module according to any one of
    [15" id="c-fr-0015]
    15 previous claims.
    2/2
    类似技术:
    公开号 | 公开日 | 专利标题
    EP3273149B1|2021-10-20|Light module for a motor vehicle
    EP2541291B1|2021-04-07|Light guide with decoupling portion and cover collecting the decoupled rays
    EP1857732B1|2009-09-02|Lighting and/or signalling device for an automobile
    EP2865937B1|2021-03-10|Lighting device comprising a light guide
    EP2476947B1|2014-10-29|Lighting or signalling device with an optical guide for an automobile vehicle
    EP1775511A1|2007-04-18|Vehicle lighting or signalling device with a light guide
    EP3128226B1|2019-03-06|Luminous module made of transparent material with two reflecting surfaces
    EP1881264A1|2008-01-23|Optical module for headlights of an automobile
    FR2850731A1|2004-08-06|LIGHT GUIDE WITH REFLECTORS
    FR2974616A1|2012-11-02|SIGNALING DEVICE WITH "STOP" AND "POSITION" FUNCTIONS USING A LIGHT GUIDE AND GENERATING A 3D EFFECT
    FR2966224A1|2012-04-20|Lighting or signaling device for production of luminous flux to e.g. indicate of motor vehicle, has guiding layer that is provided with reflection unit to direct rays of collimated beam toward guiding layer
    WO2016124718A1|2016-08-11|Vehicle light module compatible with driving on the left and driving on the right
    FR3055691B1|2019-08-23|DIFFRACTIVE SCREEN LIGHTING MODULE FOR MOTOR VEHICLE
    WO2015011378A1|2015-01-29|Lighting system, in particular for a motor vehicle lighting member, comprising a printed circuit board inclined in relation to the lighting direction
    FR3063337A1|2018-08-31|LUMINOUS DEVICE WITH OPTICAL ELEMENT WITH INDOOR DIOPTRE
    EP2302292A1|2011-03-30|Optical module with folder formed by a transparent material/air dioptre
    FR3056678A1|2018-03-30|IMPROVED LIGHT TRANSMIT MODULE FOR MOTOR VEHICLE
    EP3453955B1|2020-07-22|Light-emitting module for lighting and/or signalling of a motor vehicle
    EP2703220B1|2016-12-21|Lighting and/or signalling device for an automobile
    FR3054641A1|2018-02-02|THIRD STOP FIRE WITH OUTPUT OF REDUCED THICKNESS
    FR2998644A1|2014-05-30|SIGNALING DEVICE FOR VEHICLE WITH THREE DIMENSIONAL EFFECT
    EP3141806B1|2018-10-17|Luminous module made of transparent material
    FR3079597A1|2019-10-04|OPTICAL MODULE FOR MOTOR VEHICLE
    FR3064756A1|2018-10-05|GUIDE LIGHT CURVE PROPAGATOR OF BRIGHT RAYS
    FR3008770A1|2015-01-23|MODULAR LIGHTING SYSTEM, IN PARTICULAR FOR A MOTOR VEHICLE LIGHTING ARRANGEMENT
    同族专利:
    公开号 | 公开日
    CN107631267A|2018-01-26|
    US20180017226A1|2018-01-18|
    CN107631267B|2021-11-16|
    US10801690B2|2020-10-13|
    FR3054022B1|2020-03-20|
    EP3273149A1|2018-01-24|
    EP3273149B1|2021-10-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP0306399A1|1987-09-03|1989-03-08|Valeo Vision|Masked light for motor vehicles|
    US20100195342A1|2009-01-21|2010-08-05|Lambert Chad D|Automotive Signal Light Employing Multi-focal Length Light Pipes|
    WO2013113728A1|2012-02-03|2013-08-08|Automotive Lighting Rear Lamps France S.A.S.|Led lighting module for the rear lights of a motor vehicle|
    US20140078764A1|2012-09-14|2014-03-20|Koito Manufacturing Co., Ltd.|Vehicular Lamp|
    FR3008774A1|2013-07-22|2015-01-23|Renault Sa|LIGHTING SYSTEM, IN PARTICULAR FOR A MOTOR VEHICLE LIGHTING BODY, WITH CIRCUIT BOARD PRINTED IN THE LIGHTING DIRECTION PLAN|
    ITTV20110034A1|2011-03-04|2012-09-05|Automotive Lighting Italia Spa|AUTOMOTIVE HEADLIGHT|
    FR3001027B1|2013-01-15|2015-03-20|Valeo Vision|LIGHTING MODULE AND METHOD FOR MOUNTING SUCH A MODULE|AT520398B1|2017-08-29|2020-10-15|Zkw Group Gmbh|LIGHTING AND / OR SIGNALING DEVICE FOR A MOTOR VEHICLE|
    WO2019167569A1|2018-02-27|2019-09-06|株式会社小糸製作所|Vehicle lamp|
    ES2739432B2|2018-07-30|2020-10-07|Seat Sa|LIGHT GUIDE AND LIGHTING SYSTEM OF A SIDE OF A VEHICLE|
    CZ2018447A3|2018-09-05|2020-03-18|Varroc Lighting Systems, s.r.o.|Lighting equipment with multiple light function|
    WO2021038082A1|2019-08-30|2021-03-04|Motherson Innovations Company Ltd.|Light assembly, vehicle design element, rear view device and door finisher|
    DE102019215332A1|2019-10-07|2021-04-08|W. Gessmann Gmbh|Light signal device for a driverless transport system|
    US11067243B2|2019-12-17|2021-07-20|GM Global Technology Operations LLC|Opaque outer lens with integrated light element|
    法律状态:
    2017-07-31| PLFP| Fee payment|Year of fee payment: 2 |
    2018-01-19| PLSC| Publication of the preliminary search report|Effective date: 20180119 |
    2018-07-27| PLFP| Fee payment|Year of fee payment: 3 |
    2019-07-31| PLFP| Fee payment|Year of fee payment: 4 |
    2020-07-31| PLFP| Fee payment|Year of fee payment: 5 |
    2021-07-29| PLFP| Fee payment|Year of fee payment: 6 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1656838A|FR3054022B1|2016-07-18|2016-07-18|LIGHT MODULE FOR MOTOR VEHICLE|
    FR1656838|2016-07-18|FR1656838A| FR3054022B1|2016-07-18|2016-07-18|LIGHT MODULE FOR MOTOR VEHICLE|
    EP17181044.3A| EP3273149B1|2016-07-18|2017-07-12|Light module for a motor vehicle|
    CN201710588431.8A| CN107631267B|2016-07-18|2017-07-18|Lighting module for a motor vehicle|
    US15/653,029| US10801690B2|2016-07-18|2017-07-18|Illumination module for a motor vehicle including an opaque mask|
    [返回顶部]