• 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:
    The invention relates to a light module (2), in particular for a motor vehicle, comprising a light source (4) capable of emitting light rays; a collector (6) with a reflecting surface (6.2) configured to collect and reflect the light rays emitted by the light source (4) in a light beam along an optical axis (8) of the module; an optical system (10) configured to project the light beam. The collector (6) is configured so that part of the light rays of the light beam are parallel to the optical axis (8) or have an angle of inclination α less than or equal to 10 ° relative to said axis; and the optical system (10) is configured to form an image of the reflecting surface (6.2) of the collector (6). The invention also relates to a projector comprising one or more such light modules.
    公开号:FR3084728A1
    申请号:FR1857160
    申请日:2018-07-31
    公开日:2020-02-07
    发明作者:Sylvain Giraud
    申请人:Valeo Vision SA；
    IPC主号:
    专利说明:

    LIGHT MODULE IMAGING THE ILLUMINATED SURFACE OF A COLLECTOR
    The invention relates to the field of lighting and light signaling, more particularly in the automotive field.
    It is generally known to produce a cut-off lighting beam using one or more bending light modules. Such a light module conventionally comprises a collector with a reflecting surface of revolution with an elliptical profile, in the form of a cap in a half-space delimited by a horizontal plane. An essentially point light source, of the light-emitting diode type, is located at a first focus of the reflecting surface and illuminates in the half-space in the direction of said surface. The rays are thus reflected convergently towards a second focal point of the reflecting surface. Another reflecting surface, generally planar, with a cutting edge at the level of the second focal point ensures an upward reflection of the rays which do not pass precisely through the second focal point, these rays then being refracted by a thick lens towards the bottom of the beam. lighting. This reflecting surface is commonly referred to as a "bender" in that it "folds" upward the projection lens the rays which would otherwise form an upper part of the light beam.
    Such a light module has the disadvantage of requiring significant precision in the positioning of the folder and the cutting edge. Also, the projection lens must be a thick lens due to its small focal length, which increases its weight and complicates its production, such as in particular shrinkage defects. In addition, the collector has a certain height and, therefore, a certain size in height.
    The aim of the invention is to overcome at least one of the drawbacks of the above-mentioned state of the art. More particularly, the invention aims to propose a light module capable of forming a potentially cut-off light beam, which is compact and more economical to produce.
    The subject of the invention is a light module, in particular for a motor vehicle, comprising a light source capable of emitting light rays; a collector with a reflecting surface configured to collect and reflect the light rays emitted by the light source in a light beam along an optical axis of the module; an optical system configured to project the light beam; remarkable in that the optical system is configured to form an image of the reflective surface of the collector.
    According to an advantageous embodiment of the invention, the collector is configured so that the light rays of the light beam reflected by a rear part of the reflective surface of the collector are parallel to the optical axis or have a lower angle of inclination or equal to 10 ° with respect to said axis. Advantageously, the rays in question correspond to at least 30%, preferably 40%, more preferably 50%, more preferably still 80%, of the light rays of the light beam. Advantageously, the rear part of the reflecting surface is a rear half of said surface.
    According to an advantageous embodiment of the invention, the light source is configured to emit the light rays in a main direction perpendicular to the optical axis.
    According to an advantageous embodiment of the invention, the reflective surface of the collector has a parabolic or elliptical profile and is a surface of revolution of said profile. The revolution is around an axis advantageously parallel to the optical axis.
    According to an advantageous embodiment of the invention, the optical system has a focal point located on the optical axis at the level of the light source, in front of or behind said source with respect to a general direction of propagation of the light beam according to the optical axis.
    According to an advantageous embodiment of the invention, the module further comprises a screen located at the front of the light source, with respect to a general direction of propagation of the light beam along the optical axis, and facing -vis the reflective surface of the collector, so as to collect the light rays emitted towards the front by the light source and not reflected by said surface.
    According to an advantageous embodiment of the invention, the screen is opaque so as to absorb the collected light rays.
    According to an advantageous embodiment of the invention, the optical system is a projection lens.
    According to an advantageous embodiment of the invention, the optical system comprises a mirror, advantageously on the optical axis.
    According to an advantageous embodiment of the invention, the mirror of the optical system is a first mirror, said system comprising a second mirror behind the first mirror, with respect to a general direction of propagation of the light beam, and at a distance from said axis, the first mirror being configured to reflect the light beam towards the second mirror, and the second mirror being configured to reflect said beam reflected by the first mirror, in a direction substantially parallel to the optical axis.
    According to an advantageous embodiment of the invention, the first mirror is plane or has a concave profile in a horizontal plane when the module is oriented in the mounting position.
    According to an advantageous embodiment of the invention, the mirror or the second mirror has a parabolic profile in a vertical plane when the module is oriented in the mounting position.
    According to an advantageous embodiment of the invention, the reflecting surface of the collector is concave and has a front edge and a rear edge, relative to a general direction of propagation of the light beam, said front edge delimiting a lower part of the light image formed and said rear edge delimiting an upper part of said image, when the module is oriented in the mounting position.
    According to an advantageous embodiment of the invention, the light rays reflected by the reflecting surface along the rear edge are parallel to the optical axis or have an angle of inclination less than or equal to 10 ° relative to said axis.
    According to an advantageous embodiment of the invention, the reflective surface of the collector comprises two lateral edges on either side of the optical axis and in the extension of the rear edge, said lateral edges being in a horizontal plane when the module is oriented in mounting position.
    According to an advantageous embodiment of the invention, the rear edge is in the horizontal plane, the light image formed having a corresponding flat horizontal cut.
    According to an advantageous embodiment of the invention, the rear edge has a projection, the light image formed having a corresponding horizontal cut with projection.
    According to an advantageous embodiment of the invention, the reflective surface of the collector comprises two lateral edges on either side of the optical axis, said lateral edges being intersecting with the rear edge, the light image formed having corresponding lateral cuts .
    The subject of the invention is also a headlamp for a motor vehicle, comprising several light modules combined to form, together, a light and / or signaling beam; remarkable in that at least one of the modules is according to the invention.
    According to an advantageous embodiment of the invention, for at least one of the light modules, the reflective surface of the collector comprises two lateral edges on either side of the optical axis and in the extension of the rear edge, said lateral edges being in a horizontal plane when the module is oriented in the mounting position, the rear edge is in the horizontal plane, the light image formed having a corresponding flat horizontal cut, and for at least one of the said modules the reflective surface of the collector comprises two lateral edges on either side of the optical axis and in the extension of the rear edge, said lateral edges being in a horizontal plane when the module is oriented in the mounting position, the rear edge has a projection, the light image formed having a corresponding horizontal cut with a projection, the lighting beam having a horizontal cut with a projection.
    According to an advantageous embodiment of the invention, the at least one light module is at least two in number, the optical system of each of said modules being common.
    According to an advantageous embodiment of the invention, the common optical system has a focal point located behind, with respect to a general direction of propagation of the light beam, of the collectors of the light modules at least two in number.
    The measures of the invention are advantageous in that the fact of imaging the illuminated reflecting surface of the collector makes it possible to obtain a sharp projected light image and, consequently, to produce equally clear cuts by means of the edges of the surface in question. . More particularly, the edges of the reflecting surface, in particular the rear edge, have dimensions substantially greater (for example between 15 and 20 mm) than the cutting edge (for example 5 mm) of a bending light module of the state of art, which makes the light module significantly less sensitive to the positioning tolerances of the optical elements, in particular the light source relative to the collector, and therefore substantially more robust.
    In addition, the fact of being in Gauss conditions, namely rays slightly inclined with respect to the optical axis and not far from said axis, has the consequence that the lens forming the projection system can be a thin lens, for example with a thickness of less than 6mm, which allows it to be produced in a single plastic injection.
    Other characteristics and advantages of the present invention will be better understood from the description and the drawings, among which:
    - Figure 1 is a schematic representation of a light module according to a first embodiment of the invention;
    - Figure 2 is a perspective view of the collector of the light module of Figure 1;
    - Figure 3 is a view of the inner surface of the collector of the light module of Figure 1, from the outside along the optical axis;
    - Figure 4 is a graphic representation of the light image of the lighting beam produced by the light module of Figure 1;
    - Figure 5 is a schematic representation of a light module according to a second embodiment of the invention;
    - Figure 6 is a perspective view of the collector of the light module of Figure 5;
    - Figure 7 is a view of the inner surface of the collector of the light module of Figure 5, from the outside along the optical axis;
    - Figure 8 is a graphic representation of the light image of the lighting beam produced by the light module of Figure 5;
    - Figure 9 is a perspective view of the collector of the light module according to a third embodiment of the invention;
    - Figure 10 is a view of the inner surface of the collector of the light module of Figure 9, from the outside along the optical axis;
    - Figure 11 is a graphic representation of the light image of the lighting beam produced by the light module of Figure 9;
    - Figure 12 is a perspective representation of a projector comprising light modules according to the invention, according to a first embodiment of the invention;
    - Figure 13 is a perspective representation of the projector of Figure 12, in another direction of observation;
    - Figure 14 is a graphic representation of the light image of the light beams produced by the jump module and the flat-cut modules, respectively, of the projector of Figures 12 and 13;
    - Figure 15 is a graphic representation of the light image of the projector of Figures 12 and 13;
    - Figure 16 is a perspective representation of a projector comprising light modules according to the invention, according to a second embodiment of the invention;
    - Figure 17 is a perspective representation of the projector of Figure 16, in another direction of observation;
    - Figure 18 is a graphic representation of the light image of the light beams produced by the jump module and the flat-cut modules, respectively, of the projector of Figures 16 and 17;
    - Figure 19 is a graphic representation of the light image of the projector of Figures 16 and 17.
    Figures 1 to 4 illustrate a first embodiment of a light module according to the invention.
    Figure 1 is a schematic representation of the light module and its operating principle. The light module 2 essentially comprises a light source 4, a collector 6 capable of reflecting the light rays emitted by the light source to form a light beam along an optical axis 8 of the module, and a projection lens 10 of said beam. Other optical projection systems than the projection lens are possible, such as one or more mirrors, as in Figures 16 and 17.
    The light source 4 is advantageously of the semiconductor type, such as in particular an electroluminescence diode. The light source 4 emits light rays in a half-space delimited by the main plane of said source, in a main direction perpendicular to said plane and to the optical axis 8.
    The collector 6 comprises a support 6.1 in the form of a shell or cap, and a reflecting surface 6.2 on the inside of the support 6.1. The reflecting surface 6.2 advantageously has a profile of the elliptical or parabolic type. It is advantageously a surface of revolution around an axis parallel to the optical axis.
    The expression “parabolic type” generally applies to reflectors whose surface has a single focus, that is to say a zone of convergence of light rays such as the light rays emitted by a light source placed at the level of this convergence zone are projected at great distance after reflection on the surface. Projected at a great distance means that these light rays do not converge on an area located at least 10 times the dimensions of the reflector. In other words, the reflected rays do not converge towards a convergence zone or, if they converge, this convergence zone is located at a distance greater than or equal to 10 times the dimensions of the reflector. A parabolic type surface may or may not have parabolic portions. A reflector having such a surface is generally used alone to create a light beam. Alternatively, it can be used as a projection surface associated with an elliptical type reflector. In this case the light source of the parabolic type reflector is the convergence zone of the rays reflected by the elliptical type reflector.
    The light source 4 is arranged at a focal point of the reflecting surface 6.2 so that its rays are collected and reflected along the optical axis. At least part of these reflected rays have angles of inclination a with respect to said axis which are less than or equal to 10 °, so as to be in the so-called Gauss conditions, making it possible to obtain a stigmatism, that is to say ie a sharpness of the projected image. Advantageously, these are the rays reflected by the rear part of the reflecting surface 6.2.
    The projection lens 10 is advantageously a plano-convex lens, that is to say with an entry face 10.1 plane and an exit face 10.2 convex. The lens 10 is said to be thin, for example less than 6 mm, due to the small inclination of the rays to be deflected. The lens 10 has a focal point 10.3 which is located along the optical axis 8, at the level of the light source 4 or even behind said source. In this case the focus 10.3 is located at the level of the reflecting surface
    6.2 of the collector 6. It should be noted that it is also possible that this hearth is located behind or in front of the reflection surface 6.2 as far as it is nearby.
    The reflecting surface, if it is of the elliptical type, has a second focus
    6.3 located at the front of the lens 10 and at a distance from the optical axis 8. It should be noted that it is also possible that this focal point is located at the rear of the lens and / or on the axis optical, provided that it is close to the lens, so as to reduce the width of the beam at the level of the entry face of the lens.
    The light module 2 can comprise a screen 12 placed at the front of the light source 4 and facing the reflecting surface 6.2 of the collector 6, so as to collect the light rays emitted by the source in question 4 and not meeting the reflecting surface 6.2. Such a measurement is useful for avoiding the presence of parasitic light rays capable of participating in the formation of the light beam without however being strictly speaking imaged. These rays will then potentially illuminate an upper part of the light beam, which is not desirable in the case of a light beam with cut-off. The screen is advantageously opaque in order to absorb these rays, it being understood that it is also possible to reflect them towards a distal absorption zone.
    Figure 2 is a rear perspective view of the manifold 6 of the light module 2 of Figure 1. We can observe the shape of the shell or cap of the support 6.1, as well as the fact that the reflecting surface (not visible) has a front edge 6.2.1 and a rear edge 6.2.2. Taking into account that the support 6.1 and, consequently, the reflecting surface 6.2 form a symmetrical shell in revolution and delimited by a plane, the plane in question includes the rear edge 6.2.2. This extends laterally on either side of the axis of revolution. When the reflecting surface 6.2 is illuminated by the light source, it is then illuminated over its entire surface, this being delimited by the front edges 6.2.1 and 6.2.2.
    Figure 3 is a representation of the light intensity at the reflecting surface 6.2 seen from the outside, along the optical axis. More specifically, the illumination of the surface, namely the power of the striking electromagnetic radiation per unit of surface perpendicular to its direction, expressed in W / m 2 . The dark area covering the majority of the surface corresponds to lower illuminations while the central, lighter area corresponds to higher illuminations. It can be seen that the dark area is clearly delimited by the edges 6.2.1 and 6.2.2. In other words, the illuminated surface 6.2 naturally has sharp edges capable of forming cuts in the projected light beam imaging this surface.
    Figure 4 is a graphic representation of the image projected by the light module of Figure 1. The horizontal axis and the vertical axis intersect at the optical axis of the light module. The curves are isolux, that is to say correspond to the areas of the light beam which have the same illumination expressed in lux. The curves in the center correspond to a higher level of illumination than at the periphery. It can be seen that the light beam produced has a horizontal cut, essentially at the level of the horizontal axis. The cut is not perfectly straight; it has a curvature which corresponds to aberrations of the image thus produced. In any event, the horizontal cut is made by the edge 6.2.2 (Figure 3) which is the rear edge (Figure 2) of the reflective surface 6.2 of the collector 6. We can also observe that the light beam produced presents, below the horizontal axis, a clear outline corresponding to the front edge 6.2.1.
    Figures 5 to 8 illustrate a second embodiment of a light module according to the invention. The reference numbers of the first embodiment of the light module (FIGS. 1 to 4) are used to designate the same elements or corresponding elements, these numbers however being increased by 100. Reference is also made to the description of these elements in relationship to Figures 1 to 4.
    The second embodiment is similar to the first embodiment and is essentially distinguished in that the rear edge 106.2.2 of the reflecting surface 106.2 has a projection and, more generally, the wall forming the support 106.1 of the collector and the reflecting surface 106.2 of said collector extend less downwards towards the light source 104. In other words, the rear edge 106.2.2 is not only with a projection but also closer to the optical axis 108 This is due to the geometry of the beam sought where there is a maximum at the level of the optical axis 108. In another configuration of the collector, the rear edge may not be closer to the optical axis. The rest is essentially identical to the first embodiment of the light module.
    FIG. 5 is a schematic representation of the light module and of its operating principle, similar to FIG. 1. Similar to the first embodiment, other optical projection systems than the projection lens 110 can be envisaged, such as in particular one or several mirrors, as in FIGS. 16 and 17. It can be observed that the collector 106 is shorter, that is to say extends less towards the light source 104.
    Figure 6 is a rear perspective view of the manifold 6 of the light module 102 of Figure 5, similar to Figure 2. It can be seen that the rear edge
    106.2.2 of the reflecting surface 106.2 of the collector 106 forms a projection at its intersection with a vertical median plane.
    FIG. 7 is a representation of the light intensity of the reflecting surface 106.2 seen from the outside, along the optical axis, similar to FIG. 3. We can clearly observe the projection of the rear edge 106.2.2.
    Figure 8 is a graphic representation of the image projected by the light module of Figure 5, similar to Figure 4. We can observe the shape of the horizontal cut, corresponding to the profile of the rear edge 106.2.2 visible in Figures 6 and 7.
    Figures 9 to 11 illustrate a third embodiment of a light module according to the invention. The reference numbers of the first embodiment of the light module (FIGS. 1 to 4) are used to designate the same elements or corresponding elements, these numbers however being increased by 200. Reference is also made to the description of these elements in relationship to Figures 1 to 4.
    This third embodiment differs from the previous two essentially in that the collector is truncated laterally, that is to say does not form more than a shell portion as in the first and second embodiments.
    The architecture of the module and its operating principle is similar to that of the two previous embodiments.
    FIG. 9 is a rear perspective view of the collector of the light module, similarly to FIGS. 2 and 6. It can be observed that, unlike the first two embodiments, the rear edge 206.2.2 of the reflecting surface
    206.2 fails to extend laterally. In the invention, the reflective surface
    206.2 has two lateral edges 206.2.3 and 206.2.4 intersecting with the rear edge
    206.2.2 and with the front edge 206.2.1.
    FIG. 10 is a representation of the light intensity of the reflecting surface 206.2 seen from the outside, along the optical axis, similarly to FIGS. 3 and 7. The four sharp edges corresponding to the front edges 206.2.1 can be observed, rear 206.2.2 and side 206.2.3 and 206.2.4.
    FIG. 11 is a graphic representation of the image projected by the light module of the third embodiment, similarly to FIGS. 4 and 8. It can be observed that the light image is cut not only horizontally but also laterally, more particularly vertically.
    Figures 12 to 15 illustrate a headlight for a motor vehicle according to a first embodiment.
    Figures 12 and 13 are two perspective views of the projector. The projector 14 comprises several light modules according to the invention which, combined, form a lighting beam of the code type or even of a crossing (in English "low-beam"), having a horizontal cut with a projection.
    More specifically, the projector 14 comprises a first light module 102 conforming to that of FIGS. 5 to 8, that is to say a module with horizontal cut-off with a projection. Such a function is commonly designated by the Anglo-Saxon term "kink".
    The projector 14 also comprises four light modules 2 arranged side by side and conforming to the light module of FIGS. 1 to 4, that is to say a module with flat horizontal cut-off. Such a function is commonly designated by the Anglo-Saxon term "fiat". However, these light modules 2 have the particularity that their projection lenses form a common lens 10 ’, in one piece. The common lens 10 ’has a generally curved horizontal profile and entry faces 10’. 1 and outlet 10’.2. It has a focal line 10’.3 which is advantageously located at the rear of the collectors 6, so as to essentially image the rear edge 6.2.2 of the reflective surfaces and thus produce a clear horizontal cut (“fiat”). The illuminated reflecting surfaces 6.2 of the collectors 6 are thus imagined essentially vertically but less horizontally in order to achieve diffuse lighting horizontally and thus ensure good homogeneity between the images of the light modules 2.
    The projection lens 110 of the light module 102 is advantageously distinct from the common lens 10. The focal point of the lens 10 is for its part located in front of the rear edge 106.2.2 of the reflecting surface 106.2 of the collector 106, so to image said surface not only vertically but also horizontally and thus produce a sharp jump cut ("kink").
    A partition can be provided between the light module 102 and the light module 2 closest to said module 102, so as to allow them to be brought together without the light rays of leakage from one of the modules parasitizing the other. Such a partition extends essentially vertically when the projector is in the mounting position as illustrated in FIG. 12. It is advantageously light absorbing.
    FIG. 14 illustrates the light images produced by the light module 102 (FIGS. 12 and 13) (“kink”) and the light modules 2 (“fiat”). The upper light image is produced by the light module 102. It is very clear and corresponds to the light image in FIG. 8. The lower light image is produced by two of the four light modules 2 (FIGS. 12 and 13), namely those for which the ray tracings are represented in FIGS. 12 and 13. A clear horizontal cut is observed and a homogeneous horizontal mixture of the light images of the two modules. It should be noted that the horizontal cut-off here is lower and particularly flat compared to that visible in FIG. 4 of the first embodiment of the light module, since the reflective surfaces of the collectors have rear and lateral edges which are advantageously distant from the light sources, respectively, similar to the light module of FIGS. 5 to 8, the rear edge and the lateral edges then being in the same plane.
    FIG. 15 illustrates the combined light image of the “kink” and “fiat” images of FIG. 14. It is understood that the two other light modules 2 whose light ray tracings are not shown in FIGS. 12 and 13 complete the picture. 'bright image on the right side, similar to the image in Figure 14 of the two light modules whose ray tracings are shown.
    Figures 16 to 19 illustrate a headlight for a motor vehicle according to a second embodiment.
    Figures 16 and 17 are two perspective views of the projector. Similar to the projector of the first mode, the projector 114 comprises a first light module 102 conforming to that of FIGS. 5 to 8, that is to say a module with horizontal cut-off with a projection ("kink"). The projector 114 also includes three light modules 2 arranged side by side and conforming to the light module of FIGS. 1 to 4, that is to say a module with flat horizontal cut-off ("fiat").
    The projector 114 differs from the projector 14 in FIGS. 12 and 13 essentially in that the projection lenses of the light modules 2 and 102 are replaced by mirrors.
    More specifically, the module 102 comprises an optical projection system 110 ’including a first mirror 110’. 1 and a second 110'.2 mirror. The first 110 ’mirror. 1 can be flat or have a curved and concave horizontal profile. It returns the rays emitted by the collector of the light module 102 to the second mirror 110’. 2. This is configured to form an image of the reflecting and illuminated surface of the light module 102. To this end, the second mirror 110’.2 may have a concave parabolic vertical profile. Such a profile makes it possible to image with enlargement the illuminated reflecting surface of the collector of the module 102. The second mirror 110’.2 can have a convex horizontal profile, in particular when the first mirror 110’.1 has a concave horizontal profile. The first and second mirrors which have just been described can be reversed. In this case, the projector will be more cumbersome, especially longitudinally due to the fact that the first imaging mirror will have to be further advanced forward.
    Similar to light module 102, light modules 2 include a 10 ”projection optical system provided with a first 10” mirror. 1 and a second 10 ”mirror. 2. The operating principle is identical to that of the optical system 110 ’described above. The comments presented above therefore also apply to the 10 ”optical system.
    FIG. 18 illustrates the light images produced by the light module 102 (“kink”) and the light modules 2 (“fiat”) in FIGS. 16 and 17. The comments made in relation to FIG. 14 of the first embodiment of the projector apply to Figure 18.
    FIG. 19 illustrates the combined light image of the “kink” and “fiat” images of FIG. 18. The comments made in relation to FIG. 15 of the first embodiment of the projector apply to FIG. 19.
    In general, it is interesting to note that for the different embodiments of the light module as well as the projector, different optical projection systems are possible as long as they are able to image the illuminated reflecting surface of the collector concerned. In the case of a set of mirrors as described above in relation to FIGS. 16-19, the first mirror and / or the second mirror can be made in one piece with the associated collector, which is advantageous as regards the relative positioning of these elements.
    Still in general, it is interesting to note the numerous advantages of the light modules and projectors according to the invention, namely essentially the fact of imaging the illuminated reflecting surface of the collector, under Gauss conditions, makes it possible to obtain a clear and therefore bright image, making cuts of various shapes and forms by shaping the corresponding edges of the reflecting surface in question. Another interesting advantage stems from the fact that the Gauss conditions must be present in order to obtain a minimum of clarity, namely that the collector has a limited size, in particular in height, such as for example less than 30 mm. Yet another advantageous advantage also stems from the fact that the Gauss conditions are present, namely that the projection lens can be a thin lens, for example less than 6 mm, which allows it to be produced in a single plastic injection without problems. shrinkage.
    权利要求:
    Claims (22)
    [1" id="c-fr-0001]
    claims
    1. Light module (2; 102; 202), in particular for a motor vehicle, comprising:
    - a light source (4; 104) capable of emitting light rays;
    - a collector (6; 106; 206) with a reflecting surface (6.2; 106.2;
    206.2) configured to collect and reflect the light rays emitted by the light source (4; 104) in a light beam along an optical axis (8; 108) of the module;
    - an optical system (10, 10 ’, 10”; 110, 110 ’) configured to project the light beam;
    characterized in that the optical system (10, 10 ’, 10”; 110, 110 ’) is configured to form an image of the reflecting surface (6.2; 106.2; 206.2) of the collector (6; 106; 206).
    [2" id="c-fr-0002]
    2. Light module (2; 102; 202) according to claim 1, characterized in that the collector (6; 106; 206) is configured so that the light rays reflected by a rear part of the reflecting surface (6.2; 106.2;
    206.2) of said collector are parallel to the optical axis (8; 108) or have an angle of inclination (a) less than or equal to 10 ° relative to said axis.
    [3" id="c-fr-0003]
    3. light module (2; 102; 202) according to one of claims 1 and 2, characterized in that the light source (4; 104) is configured to emit the light rays in a main direction perpendicular to the optical axis (8; 108).
    [4" id="c-fr-0004]
    4. light module (2; 102; 202) according to one of claims 1 to 3, characterized in that the reflecting surface (6.2; 106.2; 206.2) of the collector (6; 106; 206) has a parabolic or elliptical profile and is a surface of revolution of said profile.
    [5" id="c-fr-0005]
    5. Light module (2; 102; 202) according to one of claims 1 to 4, characterized in that the optical system (10, 10 ', 10 ”; 110, 110') has a focal point (10.3, 10 ' .3; 110.3) located on the optical axis (8; 108) at the light source (4; 104), in front of or behind said source with respect to a general direction of propagation of the light beam according to optical axis (8; 108).
    [6" id="c-fr-0006]
    6. light module (2; 102; 202) according to one of claims 1 to 5, characterized in that said module further comprises a screen (12; 112) located in front of the light source (4 ; 104), with respect to a general direction of propagation of the light beam along the optical axis, and facing the reflecting surface (6.2; 106.2; 206.2) of the collector (6; 106; 206), so as to collecting the light rays emitted towards the front by the light source (4; 104) and not reflected by said surface.
    [7" id="c-fr-0007]
    7. Light module (2; 102; 202) according to claim 6, characterized in that the screen (12; 112) is opaque so as to absorb the collected light rays.
    [8" id="c-fr-0008]
    8. Light module (2; 102; 202) according to one of claims 1 to 7, characterized in that the optical system is a projection lens (10, 10 ’; 110).
    [9" id="c-fr-0009]
    9. Light module (2; 102) according to one of claims 1 to 7, characterized in that the optical system (10 "; 110") comprises a mirror (10 ". 1; 110". 1).
    [10" id="c-fr-0010]
    10. Light module (2; 102; 202) according to claim 9, characterized in that the mirror (10 ”. 1; 110'.1) of the optical system (10”; 110 ') is a first mirror, said system comprising a second mirror (10 ”.2; 110'.2) behind the first mirror (10”. 1; 110 '. 1), with respect to a general direction of propagation of the light beam, and at a distance from said axis, the first mirror (10 ”. 1; 110 '. 1) being configured to reflect the light beam towards the second mirror (10” .2; 110'.2), and the second mirror being configured to reflect said beam reflected by the first mirror, in a direction parallel to the optical axis.
    [11" id="c-fr-0011]
    11. light module (2; 102) according to claim 10, characterized in that the first mirror (10 ”. 1; 110'.1) is plane or has a concave profile in a horizontal plane when the module is oriented in position mounting.
    [12" id="c-fr-0012]
    12. Light module (2, 102) according to one of claims 9 to 11, characterized in that the mirror (10 ”.1; 110'.1) or the second mirror (10” .2; 110'.2 ) has a parabolic profile in a vertical plane when the module is oriented in the mounting position.
    [13" id="c-fr-0013]
    13. Light module according to (2; 102; 202) one of claims 1 to 12, characterized in that the reflecting surface (6.2; 106.2; 206.2) of the collector (6; 106; 206) is concave and has an edge before (6.2.1;
    106.2.1; 206.2.1) and a rear edge (6.2.2; 106.2.2; 206.2.2), relative to a general direction of propagation of the light beam, said front edge delimiting a lower part of the light image formed and said edge rear delimiting an upper part of said image, when the module is oriented in the mounting position.
    [14" id="c-fr-0014]
    14. Light module (2; 102; 202) according to claim 13, characterized in that the light rays reflected by the reflecting surface (6.2; 106.2;
    206.2) along the rear edge (6.2.2; 106.2.2; 206.2.2) are parallel to the optical axis (8; 108) or have an angle of inclination (a) less than or equal to 10 ° from said axis.
    [15" id="c-fr-0015]
    15. Light module (2; 102) according to one of claims 13 and 14, characterized in that the reflecting surface (6.2; 106.2) of the collector (6; 106) comprises two lateral edges on either side of the optical axis and in the extension of the rear edge (6.2.2; 106.2.2), said lateral edges being in a horizontal plane when the module is oriented in the mounting position.
    [16" id="c-fr-0016]
    16. Light module (2) according to claim 15, characterized in that the rear edge (6.2.2) is in the horizontal plane, the light image formed having a corresponding flat horizontal cut.
    [17" id="c-fr-0017]
    17. Light module (102) according to claim 15, characterized in that the rear edge (106.2.2) has a projection, the light image formed having a corresponding horizontal cut with projection.
    [18" id="c-fr-0018]
    18. Light module according to (202) one of claims 13 and 14, characterized in that the reflecting surface (206.2) of the collector (206) comprises two lateral edges (206.2.3, 206.2.4) on the one hand and other of the optical axis, said lateral edges being intersecting with the rear edge (206.2.2), the light image formed having corresponding lateral cuts.
    [19" id="c-fr-0019]
    19. Headlamp (14; 114) for a motor vehicle, comprising several light modules (2; 102) combined to form, together, a light or signaling beam; characterized in that at least one of the light modules (2; 102) is according to one of claims 1 to 18.
    [20" id="c-fr-0020]
    20. Projector (14; 114) according to claim 19, characterized in that at least one (2) of the light modules (2, 102) complies with claim 13 and at least one other (102) of said modules complies in claim 14, the light beam having a horizontal cut with a projection.
    [21" id="c-fr-0021]
    21. Projector (14) according to claim 20, characterized in that the at least one light module (2) according to claim 13 is at least two in number, the optical system (10 ') of each of said modules being common.
    [22" id="c-fr-0022]
    22. Projector (14) according to claim 21, characterized in that the common optical system (10 ') has a focal line (10'.3) situated behind, with respect to a general direction of propagation of the light beam, collectors (6) of the light modules (2) at least two in number.
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    同族专利:
    公开号 | 公开日
    JP2021533537A|2021-12-02|
    EP3830474A1|2021-06-09|
    KR20210036929A|2021-04-05|
    CN112513522A|2021-03-16|
    US20210332964A1|2021-10-28|
    WO2020025171A1|2020-02-06|
    FR3084728B1|2021-03-19|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    EP1970619A1|2007-03-14|2008-09-17|Valeo Vision|Optical module for headlights of an automobile|
    WO2013138834A1|2012-03-21|2013-09-26|Zizala Lichtsysteme Gmbh|Projection module for a motor vehicle|
    WO2014207817A1|2013-06-25|2014-12-31|市光工業株式会社|Vehicle headlight|
    EP3144584A1|2014-05-12|2017-03-22|Ichikoh Industries, Ltd.|Vehicle headlamp|
    CN207584664U|2017-11-24|2018-07-06|上海小糸车灯有限公司|Car light projecting unit, vehicle lamp assembly and automobile|WO2021170400A1|2020-02-27|2021-09-02|Valeo Vision|Motor vehicle light module comprising an electrochromic device|
    FR3107750A1|2020-02-27|2021-09-03|Valeo Vision|Motor vehicle light module comprising an electrochromic device|
    FR3107749A1|2020-02-27|2021-09-03|Valeo Vision|Motor vehicle light module comprising an electrochromic device|EP1798467B1|2005-12-14|2008-02-13|T.Y.C. Brother Industrial Co., Ltd.|Projection lighting device|
    法律状态:
    2019-07-31| PLFP| Fee payment|Year of fee payment: 2 |
    2020-02-07| PLSC| Publication of the preliminary search report|Effective date: 20200207 |
    2020-07-31| PLFP| Fee payment|Year of fee payment: 3 |
    2021-07-29| PLFP| Fee payment|Year of fee payment: 4 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1857160A|FR3084728B1|2018-07-31|2018-07-31|LIGHT MODULE IMAGING THE ILLUMINATED SURFACE OF A COLLECTOR|FR1857160A| FR3084728B1|2018-07-31|2018-07-31|LIGHT MODULE IMAGING THE ILLUMINATED SURFACE OF A COLLECTOR|
    KR1020217003144A| KR20210036929A|2018-07-31|2019-02-04|A light-emitting module that images the illuminated surface of the collector|
    US17/264,532| US11280464B2|2018-07-31|2019-02-04|Luminous module that images the illuminated surface of a collector|
    JP2021505397A| JP2021533537A|2018-07-31|2019-02-04|Light emitting module that projects the illuminated surface of the concentrator|
    EP19701895.5A| EP3830474A1|2018-07-31|2019-02-04|Luminous module that images the illuminated surface of a collector|
    CN201980050549.2A| CN112513522A|2018-07-31|2019-02-04|Illumination module for imaging an illuminated surface of a light collector|
    PCT/EP2019/052670| WO2020025171A1|2018-07-31|2019-02-04|Luminous module that images the illuminated surface of a collector|
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