EP2853804B1 - Lighting and/or signalling module with a plurality of rotary optical systems - Google Patents

Lighting and/or signalling module with a plurality of rotary optical systems Download PDF

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Publication number
EP2853804B1
EP2853804B1 EP14187197.0A EP14187197A EP2853804B1 EP 2853804 B1 EP2853804 B1 EP 2853804B1 EP 14187197 A EP14187197 A EP 14187197A EP 2853804 B1 EP2853804 B1 EP 2853804B1
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EP
European Patent Office
Prior art keywords
lighting
light source
optical systems
sources
rotation
Prior art date
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Active
Application number
EP14187197.0A
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German (de)
French (fr)
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EP2853804A1 (en
Inventor
Jean-Claude Puente
Vincent Godbillon
Jean-Luc Meyrenaud
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Valeo Vision SAS
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Valeo Vision SAS
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/67—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors
    • F21S41/675—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on reflectors by moving reflectors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/26—Elongated lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/27—Thick lenses
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
    • F21S41/32—Optical layout thereof
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • 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
    • F21S41/63—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates
    • F21S41/635—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on refractors, filters or transparent cover plates by moving refractors, filters or transparent cover plates
    • 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
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/657—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by moving light sources

Definitions

  • the invention relates to the field of lighting and/or signaling, in particular for motor vehicles.
  • Automotive lighting can be interior lighting or exterior lighting of the projector or beacon type.
  • the invention relates to a lighting and/or signaling module as well as to a lighting and/or signaling device comprising one or more such modules.
  • Dual function lighting modules are known. They may comprise a first light source, in particular of the light-emitting diode (LED) type, illuminating in a first half-space in the direction of a first reflecting surface, in particular elliptical, and a second light source illuminating in a second half-space, opposite the first, towards a second reflective surface.
  • the first light source and the first reflective surface can be designed to produce a first cut-off lighting beam, that is to say of the crossing or even “code” type.
  • the second light source and the second reflective surface can produce a beam complementing the first, resulting in a second uninterrupted beam of the "road” type.
  • the published patent document FR 2 761 026 A1 discloses a single-source, single-reflector bi-beam motor vehicle headlamp.
  • the headlamp comprises an optical element arranged opposite the single light source, capable of deflecting part of the rays emitted by the source towards a side zone of the reflector.
  • a movable shield is capable of being moved from an inactive position to an active position where it shields the optical element.
  • the headlamp In the inactive position of the shield, the headlamp performs a road-type lighting function, that is to say without cut-off.
  • the projector performs a crossing type lighting function. The cutting of this beam is ensured by the shape of the central zone of the reflecting surface.
  • This projector has the advantage of providing two functions with a single light source.
  • the published patent document FR 2 940 403 A1 discloses a lighting module for a motor vehicle, ensuring several lighting functions with a single light source.
  • the projector essentially comprises a light source, a reflective surface with an elliptical profile, a first focus of which is in correspondence with the light source, and a projection lens, the focus of which is in correspondence with the second focus of the surface with an elliptical profile. It further comprises an optical element in the form of a pull tab is provided at the level of the second focal point.
  • the drawbar element comprises several optical zones, so that the movement of the drawbar makes it possible to modify the beam produced.
  • This module is interesting but requires, like the projector of the previous teaching, the translational movement of an element, which is not without posing reliability problems.
  • the range of variation of the beam produced is limited by the use of the same main reflecting surface, in this case the surface with an elliptical profile, and the same lens.
  • the documents DE102005032128A1 And JP 2009 004309 A1 describe multi-function vehicle modules.
  • the module comprises a fixed light source and optical systems arranged on a rotating support so as to be placed selectively in front of the light source to generate different light beams.
  • the object of the invention is to propose a lighting and/or signaling module, for a motor vehicle, comprising: at least one light source; at least one optical system capable of cooperating with the rays emitted by the light source(s) in order to form a light beam; remarkable in that the module comprises at least two optical systems arranged on a rotating support around an axis of rotation with respect to the light source(s), the support being capable of selectively positioning each of said optical systems opposite the or light sources.
  • Each of the optical systems includes an optical axis. These optical axes are preferably essentially in a plane perpendicular to the axis of rotation and preferably intersect with said axis.
  • each of the optical systems includes a reflective surface.
  • At least one, preferably each, of the optical systems comprises an optical focus located at the place of the light source or sources when said optical system is optically opposite said light source or sources.
  • the optical focal points of the optical systems are arranged on a circle centered on the axis of rotation of said optical systems.
  • At least one of the optical systems comprises a reflective surface of generally parabolic profile with an optical focal point located at the location of the light source(s) when said optical surface is optically opposite said one or more light sources.
  • At least one of the optical systems comprises a reflective surface of generally elliptical profile with a first optical focal point located at the location of the light source or sources when said optical surface is optically opposite said or said light sources, and a converging lens whose optical focus corresponds to a second optical focus of the elliptical surface.
  • the or at least one of the lenses extends along a curved generatrix and preferably comprises a section with a generally rounded ray exit face.
  • the or at least one of the lenses extending along a curved generatrix comprises a portion projecting and forming the exit face of the rays.
  • the light source or sources illuminate in a main direction generally parallel to the axis of rotation of the support of the optical systems.
  • the module comprises means for indexing the support so as to selectively position each of the optical systems opposite the light source(s), said means preferably comprising a ball subjected to an elastic force and cooperating with a cavity.
  • the module comprises means for moving the support capable of moving the support according to a combined movement of rotation around its axis of rotation and of translation along said axis, said combined movement being configured to avoid the light source or sources, said movement preferably following a curve.
  • At least one of the optical systems comprises a reflective surface in the form of a half-shell, said surface comprising recesses forming a passage for the passage of the light source or sources during the rotation of the support.
  • the light source or sources are arranged on a plate extending generally perpendicular to the axis of rotation of the support.
  • the invention also relates to a lighting and/or signaling device, comprising: a housing; and at least one lighting and/or signaling module; remarkable in that the or at least one of the modules is in accordance with the invention.
  • the device comprises several modules in accordance with the invention, the device being configured to form at least two lighting and/or signaling functions by means of different selections of the optical systems of the modules.
  • the measurements of the invention are interesting in that they make it possible to pool a light source with several optical systems.
  • the light source can be single or comprise a set or group of light sources forming a single source.
  • the rotational movement of the optical systems is well controlled from a mechanical reliability point of view.
  • the different optical systems make it possible to realize different beams and therefore different functions. Different functions can also be performed by combining several modules.
  • FIG. 1 illustrates a lighting and/or signaling device, in particular for a motor vehicle, according to the first embodiment.
  • figure 1 is a view in longitudinal section, that is to say vertical when the device is in the normal position of use; and the picture 2 is a cross-sectional view, that is to say horizontal when the device is in the normal position of use and perpendicular to the longitudinal section plane.
  • the device 2 comprises a casing 4 defining an open volume closed by a glass 6.
  • This volume encloses a lighting module 8 comprising a light source common light 14 and several optical systems 10,10',10" and 10 ⁇ that are mobile relative to the light source 14.
  • the light source 14 can be of the electroluminescence diode type arranged on a plate 12. represented as being single. It is however understood that a group of light sources can also be provided, the light sources then preferably being grouped together and adjacent, preferably contiguous to each other. This configuration with several grouped sources makes it possible to obtain light powers greater than that provided by a single source.
  • the light source(s) 14 are therefore common to the various optical systems 10,10',10",10'" of the module 8.
  • each of the optical systems 10, 10', 10" and 10'" comprises a reflector 20 with a reflective surface 22 configured to cooperate optically with the light source 14 when the system in question is placed optically in front of said source.
  • the light source 14 is at a distance from the axis of rotation 16 of the optical systems 10, 10′, 10′′ and 10′′ and from their support 18.
  • Each of the optical systems 10, 10′, 10′′ and 10′′ is configured to be able to cooperate optically with the light source 14 when it is brought optically in front of said source by rotation of the support 18. a single piece and thus constitute a single piece.
  • THE figures 1 and 2 clearly illustrate that the light source 14 is located in front of the axis of rotation 16 with respect to the direction of illumination. In other words, the light source is located on the side of the crystal 6 with respect to the axis of rotation 16. It should however be noted that depending on the configuration of the optical systems, this installation of the light source could be different. It is in fact conceivable that the optical systems deviate the light coming from the source in a direction opposite to the position of the source with respect to the axis of rotation, in which case they could deviate the light towards the axis of rotation and -of the.
  • the optical systems are four in number. It is understood, however, that this number may be different, by being greater than or equal to 2.
  • the module may in fact comprise for example two or three optical systems.
  • the rotation of the support 18 is indexed so as to allow precise positioning of each optical system with respect to the light source. This indexing can in particular be ensured by mechanical and/or electrical means, in a manner well known per se to those skilled in the art.
  • the optical systems each comprise a reflector 20 in the form of a half-shell covering at least partially the light source.
  • the reflective surface 22 of the reflector 20 may have a parabolic profile whose focal point is located at the location of the light source when said surface is optically opposite said source, so as to be able to form a lighting beam.
  • This reflective surface 22 may, alternatively, have an elliptical profile with a first focus located at the location of the light source when said surface is optically opposite said source and with a lens located at the level of the second focus.
  • This type of optical system is well known per se to those skilled in the art; a detailed description is therefore not necessary.
  • the 10, 10', 10" and 10 ⁇ optical systems can perform various lighting and signaling functions, such as a main beam lighting function (commonly called “High Beam”), a dipped beam lighting function with cut-off beam (commonly called “Low Beam” in English), a daytime signaling function commonly referred to by the acronym DRL (Daytime Running Light) and a direction change signaling function (commonly called "Turn Indicator” in English) .
  • a main beam lighting function commonly called “High Beam”
  • a dipped beam lighting function with cut-off beam commonly referred to by the acronym DRL (Daytime Running Light)
  • DRL Daytime Running Light
  • a direction change signaling function commonly called "Turn Indicator” in English
  • FIG. 3 is a detail view of the section of the optical system 10 of the module 8 of the figure 1 .
  • the reflector 20 in this case has a reflective surface 22 of parabolic profile, so that the rays emitted by the light source 14 in the half-space delimited by the plate 12 are mainly reflected by the reflective surface 22 in a beam generally parallel rays.
  • There picture 3 illustrates the path of such a ray.
  • FIG 4 is a perspective view of the reflector 20 of the picture 3 .
  • the reflector 20 may have recesses 24 at its lateral edges, that is to say its edges on either side of the optical axis of the optical system. These recesses are configured to allow passage of the light source 14 along these edges during the rotation of the support and the optical systems with respect to said source.
  • FIG. 5 illustrates an alternative to the presence of recesses 24 on the reflector.
  • the support can be movable in translation along its axis of rotation according to a kinematics which has the effect that the optical systems which it supports move away vertically from the source or approach it during their rotation, so as to that their edges avoid coming into contact with said source.
  • This is particularly useful for optical systems comprising a reflector in the form of a half-shell, the side edges of which are located at the height of the light source.
  • the kinematics may apply only to one or more of the optical systems with respect to the medium. It is in fact possible for the support to be mobile only in rotation and for one or more of the optical systems it supports to be mobile with respect to said support, according to a principal component directed along the axis of rotation, that is to say i.e. essentially perpendicular to the plane of rotational movement.
  • the kinematics which has just been described preferably follows a curve such as that illustrated in figure 5 .
  • it may however have a more geometric profile, such as for example a succession of pure translational movement and pure rotational movement.
  • the system 26 essentially comprises a pusher 30, such as a ball, subjected to the force elastic of a spring 28 and sliding in a housing (not shown) fixed relative to the light source, that is to say for example a frame of the module.
  • the optical systems 10, 10', 10", 10'" can each have, in particular at the level of their reflector 20, 20', 20", 20'", a notch 32 capable of cooperating with the pusher.
  • the indexing system can be ensured by an electromechanical system.
  • the rotation is ensured by a stepper motor and one or more sensor(s), for example Hall effect, which makes it possible to ensure the correct positioning facing the light source.
  • FIG. 7 illustrates a lighting and/or signaling module according to the second embodiment which is according to the invention.
  • the reference numbers of the first embodiment are used in this second embodiment for identical or corresponding elements, these numbers being however increased by 100 in order to clearly distinguish the two embodiments. Specific numbers between 100 and 200 are used for specific items.
  • the module 108 includes, similar to the module of figures 1 and 2 , several optical systems 110, 110' distributed around an axis of rotation 116. These optical systems can be variable in number, greater than or equal to two. They each comprise an angled direct imaging lens 120, 120'. Indeed, each of the lenses comprises a reflective surface 122, 122' configured to reflect the rays coming from the light source 114 towards an exit face 136, 136'.
  • the lens 120, 120' in fact corresponds to a volume formed by the displacement of a section along a generatrix corresponding to a curve which may correspond to an arc of a circle.
  • the representation at the figure 7 is a sectional view of the module and therefore shows the section of the lenses 120 and 120'.
  • the latter can be covered with a reflective coating such as an aluminized coating. It may be generally flat or at least close to a plane, inclined with respect to the axis of rotation 116 so as to reflect the rays coming from the source towards the exit face 136 and 136'.
  • the latter may have a generally rounded profile so as to form a convex surface from a point of view outside the module.
  • the profile of the exit face 136, 136' makes it possible, in combination with the geometry of the reflection face 122, 122', to obtain different types of lighting and/or signaling beam.
  • the lens 120 at the right part of the figure 7 forms a cut-off lighting beam, such as for a low beam or fog lamp function, while the lens 120' at the left part of the figure 7 forms a seamless beam, such as for a high beam function.
  • THE figures 8 and 9 illustrate two embodiments of the principle of the module of the figure 7 , corresponding to third and fourth embodiments, which are according to the invention.
  • FIG 8 shows a first example of an angled direct imaging lens module.
  • the reference numbers of the figure 7 are used in this embodiment for identical or corresponding elements, these numbers being however increased by 100 in order to clearly distinguish the two embodiments.
  • the module 208 in this case comprises three optical systems 210, 210' and 210". Each of these optical systems comprises a lens 220, 220' and 220" which extends in an unlimited manner between the two neighboring lenses. It should be noted that the figure illustrates the envelopes of the lenses, that is to say beyond their intersection with the neighboring lenses. It will be understood that this illustration is intended to illustrate the principle of the module and, in practice, the lenses will be limited to their intersections with the neighboring lenses. The reflection faces 222, 222' and 222" are clearly visible.
  • FIG 9 shows a second example of an angled direct imaging lens module.
  • the reference numbers of the figure 7 are used in this embodiment for identical or corresponding elements, these numbers being however increased by 200 in order to clearly distinguish this embodiment from the others.
  • the lenses 320 and 320' of the optical systems 310 and 310' are limited, namely that their optically active parts do not extend over the entire length of the lenses but on the contrary are located in an essentially central position forming a projecting and rounded portion 336 and 336'. There specific geometry of this central portion makes it possible to optimize the beam thus produced.
  • optical systems with direct imaging lens as illustrated in figures 7 to 9
  • reflector optical systems as shown in figures 1 and 2 .
  • the construction of the beams of the different functions is carried out on the basis of different selections of the optical systems of said modules.
  • each module is placed in a given position to obtain a function or part of a function and the beams produced by each of the optical systems of the modules can be combined so as to complement each other and thus form different functions.
  • the presence of two modules each with only two optical systems already makes it possible to consider four possible configurations when the two modules are active.
  • a greater number of modules and/or a greater number of optical systems in each of the modules makes it possible to consider a large number of combinations and, consequently, a great freedom of design of the beams.
  • the module is in rapid and continuous rotation.
  • Each optical system of the same module forms part of the beam of a lighting and/or signaling function, the complete function being obtained by superimposing these function parts. Thanks to retinal persistence, the visual impression given to an observer is that of complete function.
  • the light source 14 can be turned off when switching from one lighting and/or signaling function to another.
  • This passage must be as fast as possible (of the order of a few milliseconds) so as not to be detected by the eye of an observer. This avoids deformations of the light beam which would occur when the reflective surface of the optical systems is outside the position focused on the light source.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Description

L'invention a trait au domaine de l'éclairage et/ou de la signalisation notamment pour véhicule automobile. L'éclairage automobile peut être de l'éclairage intérieur ou de l'éclairage extérieur du type projecteur ou feu. Plus particulièrement, l'invention a trait à un module d'éclairage et/ou de signalisation ainsi qu'à un dispositif d'éclairage et/ou de signalisation comprenant un ou plusieurs tels modules.The invention relates to the field of lighting and/or signaling, in particular for motor vehicles. Automotive lighting can be interior lighting or exterior lighting of the projector or beacon type. More particularly, the invention relates to a lighting and/or signaling module as well as to a lighting and/or signaling device comprising one or more such modules.

Des modules d'éclairage à double fonction sont connus. Ils peuvent comprendre une première source lumineuse, notamment du type diode à électroluminescence (LED), éclairant dans un premier demi-espace en direction d'une première surface réfléchissante, notamment elliptique, et une deuxième source lumineuse éclairant dans un deuxième demi-espace, opposé au premier, vers une deuxième surface réfléchissante. La première source lumineuse et la première surface réfléchissante peuvent être conçues pour produire un premier faisceau d'éclairage à coupure, c'est-à-dire du type croisement ou encore « code ». La deuxième source lumineuse et la deuxième surface réfléchissante peuvent produire un faisceau complétant le premier, résultant en un deuxième faisceau sans coupure du type « route ».Dual function lighting modules are known. They may comprise a first light source, in particular of the light-emitting diode (LED) type, illuminating in a first half-space in the direction of a first reflecting surface, in particular elliptical, and a second light source illuminating in a second half-space, opposite the first, towards a second reflective surface. The first light source and the first reflective surface can be designed to produce a first cut-off lighting beam, that is to say of the crossing or even “code” type. The second light source and the second reflective surface can produce a beam complementing the first, resulting in a second uninterrupted beam of the "road" type.

Le document de brevet publié FR 2 761 026 A1 divulgue un projecteur bi-faisceau à source et réflecteur uniques pour véhicule automobile. Le projecteur comprend un élément optique disposé en face de l'unique source lumineuse, apte à dévier une partie des rayons émis par la source vers une zone latérale du réflecteur. Un occulteur mobile est apte à être déplacé d'une position inactive à une position active où il occulte l'élément optique. Dans la position inactive de l'occulteur, le projecteur assure une fonction d'éclairage du type route, c'est-à-dire sans coupure. Dans la position active de l'occulteur, le projecteur assure une fonction d'éclairage du type croisement. La coupure de ce faisceau est assurée par la forme de la zone centrale de la surface réfléchissante. Ce projecteur présente l'avantage d'assurer deux fonctions avec une seule source lumineuse. Il présente toutefois l'inconvénient qu'il n'est pas compatible avec une source lumineuse du type diode à électroluminescence. Aussi, le nombre de fonctions est limité à deux. La zone centrale de la surface réfléchissante est également commune aux deux fonctions, ce qui constitue une contrainte. De plus, le basculement d'une fonction à l'autre requiert le déplacement en translation de l'occulteur, ce qui n'est pas sans poser des problèmes de fiabilité.The published patent document FR 2 761 026 A1 discloses a single-source, single-reflector bi-beam motor vehicle headlamp. The headlamp comprises an optical element arranged opposite the single light source, capable of deflecting part of the rays emitted by the source towards a side zone of the reflector. A movable shield is capable of being moved from an inactive position to an active position where it shields the optical element. In the inactive position of the shield, the headlamp performs a road-type lighting function, that is to say without cut-off. In the active position of the shield, the projector performs a crossing type lighting function. The cutting of this beam is ensured by the shape of the central zone of the reflecting surface. This projector has the advantage of providing two functions with a single light source. However, it has the drawback that it is not compatible with a light source of the light emitting diode type. Also, the number of functions is limited to two. The central zone of the reflecting surface is also common to the two functions, which constitutes a constraint. In addition, switching from one function to another requires the displacement in translation of the shield, which is not without posing problems of reliability.

Le document de brevet publié FR 2 940 403 A1 divulgue un module d'éclairage pour véhicule automobile, assurant plusieurs fonctions d'éclairage avec une seule source lumineuse. Le projecteur comprend, essentiellement, une source lumineuse, une surface réfléchissante de profil elliptique dont un premier foyer est en correspondance avec la source lumineuse, et une lentille de projection dont le foyer est en correspondance avec le deuxième foyer de la surface de profil elliptique. Il comprend, en outre, un élément optique en forme de tirette est prévu au niveau du deuxième foyer. L'élément à tirette comprend plusieurs zones optiques, de sorte à ce que le déplacement de la tirette permet de modifier le faisceau produit. Ce module est intéressant mais requiert, comme le projecteur de l'enseignement précédent, le déplacement en translation d'un élément, ce qui n'est pas sans poser des problèmes de fiabilité. De plus, similairement au projecteur de l'enseignement précédent, la plage de variation du faisceau produit est limitée par l'utilisation de la même surface réfléchissante principale, en l'occurrence la surface de profil elliptique, et la même lentille.The published patent document FR 2 940 403 A1 discloses a lighting module for a motor vehicle, ensuring several lighting functions with a single light source. The projector essentially comprises a light source, a reflective surface with an elliptical profile, a first focus of which is in correspondence with the light source, and a projection lens, the focus of which is in correspondence with the second focus of the surface with an elliptical profile. It further comprises an optical element in the form of a pull tab is provided at the level of the second focal point. The drawbar element comprises several optical zones, so that the movement of the drawbar makes it possible to modify the beam produced. This module is interesting but requires, like the projector of the previous teaching, the translational movement of an element, which is not without posing reliability problems. Moreover, similar to the projector of the previous teaching, the range of variation of the beam produced is limited by the use of the same main reflecting surface, in this case the surface with an elliptical profile, and the same lens.

Les documents DE102005032128A1 et JP 2009 004309 A1 décrivent des modules multifonctions pour véhicule. Dans chacun de ces documents, le module comprend une source de lumière fixe et des systèmes optiques disposés sur un support rotatif de manière à être placés sélectivement devant la source lumineuse pour générer différents faisceaux lumineux.The documents DE102005032128A1 And JP 2009 004309 A1 describe multi-function vehicle modules. In each of these documents, the module comprises a fixed light source and optical systems arranged on a rotating support so as to be placed selectively in front of the light source to generate different light beams.

L'invention, définie dans la revendication 1, pour objectif de proposer un module d'éclairage et/ou de signalisation, pour véhicule automobile, comprenant: au moins une source lumineuse; au moins un système optique apte à coopérer avec les rayons émis par la ou les sources lumineuses en vue de former un faisceau lumineux; remarquable en ce que le module comprend au moins deux systèmes optiques disposés sur un support rotatif autour d'un axe de rotation par rapport à la ou les sources lumineuses, le support étant apte à positionner de manière sélective chacun desdits systèmes optiquement en face de la ou des sources lumineuses.The object of the invention, defined in claim 1, is to propose a lighting and/or signaling module, for a motor vehicle, comprising: at least one light source; at least one optical system capable of cooperating with the rays emitted by the light source(s) in order to form a light beam; remarkable in that the module comprises at least two optical systems arranged on a rotating support around an axis of rotation with respect to the light source(s), the support being capable of selectively positioning each of said optical systems opposite the or light sources.

Chacun des systèmes optiques comprend un axe optique. Ces axes optiques sont préférentiellement essentiellement dans un plan perpendiculaire à l'axe de rotation et préférentiellement sont en intersection avec ledit axe.Each of the optical systems includes an optical axis. These optical axes are preferably essentially in a plane perpendicular to the axis of rotation and preferably intersect with said axis.

Selon un mode avantageux de l'invention, chacun des systèmes optiques comprend une surface réfléchissante.According to an advantageous mode of the invention, each of the optical systems includes a reflective surface.

Selon un mode avantageux de l'invention, au moins un, préférentiellement chacun, des systèmes optiques comprend un foyer optique situé à l'endroit de la ou des sources lumineuses lorsque ledit système optique est optiquement en face de ladite ou desdites sources lumineuses.According to an advantageous embodiment of the invention, at least one, preferably each, of the optical systems comprises an optical focus located at the place of the light source or sources when said optical system is optically opposite said light source or sources.

Selon un mode avantageux de l'invention, les foyers optiques des systèmes optiques sont disposés sur un cercle centré sur l'axe de rotation desdits systèmes optiques.According to an advantageous mode of the invention, the optical focal points of the optical systems are arranged on a circle centered on the axis of rotation of said optical systems.

Selon un mode avantageux de l'invention, au moins un des systèmes optiques comprend une surface réfléchissante de profil généralement parabolique avec un foyer optique situé à l'endroit de la ou des sources lumineuses lorsque ladite surface optique est optiquement en face de ladite ou desdites sources lumineuses.According to an advantageous embodiment of the invention, at least one of the optical systems comprises a reflective surface of generally parabolic profile with an optical focal point located at the location of the light source(s) when said optical surface is optically opposite said one or more light sources.

Selon un mode avantageux de l'invention, au moins un des systèmes optiques comprend une surface réfléchissante de profil généralement elliptique avec un premier foyer optique situé à l'endroit de la ou des sources lumineuses lorsque ladite surface optique est optiquement en face de ladite ou desdites sources lumineuses, et une lentille convergente dont le foyer optique correspond à un deuxième foyer optique de la surface elliptique.According to an advantageous embodiment of the invention, at least one of the optical systems comprises a reflective surface of generally elliptical profile with a first optical focal point located at the location of the light source or sources when said optical surface is optically opposite said or said light sources, and a converging lens whose optical focus corresponds to a second optical focus of the elliptical surface.

Selon un mode avantageux de l'invention, la ou au moins une des lentilles s'étend suivant une génératrice courbe et préférentiellement comprend une section avec une face de sortie des rayons généralement arrondie.According to an advantageous embodiment of the invention, the or at least one of the lenses extends along a curved generatrix and preferably comprises a section with a generally rounded ray exit face.

Selon un mode avantageux de l'invention, la ou au moins une des lentilles s'étendant suivant une génératrice courbe comprend une portion faisant saillie et formant la face de sortie des rayons.According to an advantageous embodiment of the invention, the or at least one of the lenses extending along a curved generatrix comprises a portion projecting and forming the exit face of the rays.

Selon un mode avantageux de l'invention, la ou les sources lumineuses éclairent dans une direction principale généralement parallèle à l'axe de rotation du support des systèmes optiques.According to an advantageous embodiment of the invention, the light source or sources illuminate in a main direction generally parallel to the axis of rotation of the support of the optical systems.

Selon un mode avantageux de l'invention, le module comprend des moyens d'indexation du support de manière à positionner de manière sélective chacun des systèmes optiques en face de la ou des sources lumineuses, lesdits moyens comprenant préférentiellement une bille soumise à un effort élastique et coopérant avec une cavité.According to an advantageous embodiment of the invention, the module comprises means for indexing the support so as to selectively position each of the optical systems opposite the light source(s), said means preferably comprising a ball subjected to an elastic force and cooperating with a cavity.

Selon un mode avantageux de l'invention, le module comprend des moyens de déplacement du support apte à déplacer le support suivant un mouvement combiné de rotation autour de son axe de rotation et de translation le long dudit axe, ledit mouvement combiné étant configuré pour éviter la ou les sources lumineuses, ledit mouvement suivant préférentiellement une courbe.According to an advantageous embodiment of the invention, the module comprises means for moving the support capable of moving the support according to a combined movement of rotation around its axis of rotation and of translation along said axis, said combined movement being configured to avoid the light source or sources, said movement preferably following a curve.

Selon un mode avantageux de l'invention, au moins un des systèmes optiques comprend une surface réfléchissante en forme de demi-coquille, ladite surface comprenant des évidements formant un passage pour le passage de la ou des sources lumineuses lors de la rotation du support.According to an advantageous embodiment of the invention, at least one of the optical systems comprises a reflective surface in the form of a half-shell, said surface comprising recesses forming a passage for the passage of the light source or sources during the rotation of the support.

Selon un mode avantageux de l'invention, la ou les sources lumineuses sont disposées sur une platine s'étendant généralement perpendiculairement à l'axe de rotation du support.According to an advantageous embodiment of the invention, the light source or sources are arranged on a plate extending generally perpendicular to the axis of rotation of the support.

L'invention a également pour objet un dispositif d'éclairage et/ou de signalisation, comprenant: un boîtier; et au moins un module d'éclairage et/ou de signalisation; remarquable en ce que le ou au moins un des modules est conforme à l'invention.The invention also relates to a lighting and/or signaling device, comprising: a housing; and at least one lighting and/or signaling module; remarkable in that the or at least one of the modules is in accordance with the invention.

Selon un mode avantageux de l'invention, le dispositif comprend plusieurs modules conformes à l'invention, le dispositif étant configuré pour former au moins deux fonctions d'éclairage et/ou de signalisation au moyen de différentes sélections des systèmes optiques des modules.According to an advantageous embodiment of the invention, the device comprises several modules in accordance with the invention, the device being configured to form at least two lighting and/or signaling functions by means of different selections of the optical systems of the modules.

Les mesures de l'invention sont intéressantes en ce qu'elles permettent de mutualiser une source lumineuse avec plusieurs systèmes optiques. La source lumineuse peut être unique ou comprendre un ensemble ou groupe de sources lumineuses formant une source unique. Le mouvement de rotation des systèmes optiques est bien maîtrisé d'un point de vue fiabilité mécanique. Les différents systèmes optiques permettent de réaliser différents faisceaux et, partant, différentes fonctions. Différentes fonctions peuvent par ailleurs être réalisées par la combinaison de plusieurs modules.The measurements of the invention are interesting in that they make it possible to pool a light source with several optical systems. The light source can be single or comprise a set or group of light sources forming a single source. The rotational movement of the optical systems is well controlled from a mechanical reliability point of view. The different optical systems make it possible to realize different beams and therefore different functions. Different functions can also be performed by combining several modules.

D'autres caractéristiques et avantages de la présente invention seront mieux compris à l'aide de la description et des dessins parmi lesquels :

  • La figure 1 est une vue en coupe longitudinale d'un dispositif d'éclairage selon un premier mode de réalisation qui n'est pas selon l'invention mais qui peut être combiné avec les modes de réalisation tel qu'illustrés aux figures 7-9. ;
  • La figure 2 est une vue en coupe transversale du dispositif de la figure 1 ;
  • La figure 3 est une vue de détail d'une coupe longitudinale d'un système optique et de la source lumineuse du dispositif des figures 1 et 2 ;
  • La figure 4 est une illustration en perspective de la surface réfléchissante du système optique de la figure 3 ;
  • La figure 5 illustre différentes positions d'un système optique du dispositif des figures 1 et 2 lors de son déplacement en rotation par rapport à la source lumineuse ;
  • La figure 6 illustre un exemple de système d'indexation des systèmes optiques par rapport à la source lumineuse ;
  • La figure 7 est une vue en coupe longitudinale d'un module d'éclairage selon un deuxième mode de réalisation qui est un mode de réalisation de l'invention ;
  • La figure 8 est une vue en perspective d'un module d'éclairage selon un troisième mode de réalisation qui est un mode de réalisation de l'invention, basé sur le principe du module de la figure 7 ;
  • La figure 9 est une vue en perspective d'un module d'éclairage selon un quatrième mode de réalisation qui est un mode de réalisation de l'invention, basé sur le principe du module de la figure 7.
Other characteristics and advantages of the present invention will be better understood using the description and the drawings, among which:
  • There figure 1 is a view in longitudinal section of a lighting device according to a first embodiment which is not according to the invention but which can be combined with the embodiments as illustrated in figures 7-9 . ;
  • There picture 2 is a cross-sectional view of the device of the figure 1 ;
  • There picture 3 is a detail view of a longitudinal section of an optical system and the light source of the device of the figures 1 and 2 ;
  • There figure 4 is a perspective illustration of the reflective surface of the optical system of the picture 3 ;
  • There figure 5 illustrates different positions of an optical system of the device of the figures 1 and 2 during its movement in rotation relative to the light source;
  • There figure 6 illustrates an example of a system for indexing optical systems with respect to the light source;
  • There figure 7 is a longitudinal sectional view of a lighting module according to a second embodiment which is an embodiment of the invention;
  • There figure 8 is a perspective view of a lighting module according to a third embodiment which is an embodiment of the invention, based on the principle of the module of the figure 7 ;
  • There figure 9 is a perspective view of a lighting module according to a fourth embodiment which is an embodiment of the invention, based on the principle of the module of the figure 7 .

Les figures 1 et 2 illustrent un dispositif d'éclairage et/ou de signalisation, notamment pour véhicule automobile, selon le premier mode de réalisation La figure 1 est une vue en coupe longitudinale, c'est-à-dire verticale lorsque le dispositif est en position normale d'utilisation ; et la figure 2 est une vue en coupe transversale, c'est-à-dire horizontale lorsque le dispositif est en position normale d'utilisation et perpendiculaire au plan de coupe longitudinale.THE figures 1 and 2 illustrate a lighting and/or signaling device, in particular for a motor vehicle, according to the first embodiment. figure 1 is a view in longitudinal section, that is to say vertical when the device is in the normal position of use; and the picture 2 is a cross-sectional view, that is to say horizontal when the device is in the normal position of use and perpendicular to the longitudinal section plane.

Le dispositif 2 comprend un boîtier 4 définissant un volume ouvert refermé par une glace 6. Ce volume renferme un module d'éclairage 8 comprenant une source lumineuse 14 commune et plusieurs systèmes optiques 10,10',10" et 10ʹʹʹ mobiles par rapport à la source lumineuse 14. Plus précisément, la source lumineuse 14 peut être du type diode à électroluminescence disposée sur une platine 12. La source lumineuse 14 est représentée comme étant unique. Il est toutefois entendu qu'un groupe de sources lumineuses peut être également prévu, les sources lumineuses étant alors de préférence regroupées et voisines, de préférence accolées les unes aux autres. Cette configuration à plusieurs sources regroupées permet d'obtenir des puissances lumineuses supérieures à celle procurée par une source unique. La ou les sources lumineuses 14 sont donc communes aux différents systèmes optiques 10,10',10",10'" du module 8. La platine 12 et la source lumineuse 14 sont fixes alors que les systèmes optiques 10, 10', 10" et 10ʹʹʹ sont disposés sur un support rotatif 18 suivant un axe de rotation 16. En l'occurrence, chacun des systèmes optiques 10, 10', 10" et 10'" comprend un réflecteur 20 avec une surface réfléchissante 22 configurée pour coopérer optiquement avec la source lumineuse 14 lorsque le système en question est disposé optiquement en face de ladite source. On peut en effet observer à la figure 1 que la source lumineuse 14 est à distance de l'axe de rotation 16 des systèmes optiques 10, 10', 10" et 10ʹʹʹ et de leur support 18. Chacun des systèmes optiques 10, 10', 10" et 10ʹʹʹ est configuré pour pouvoir coopérer optiquement avec la source lumineuse 14 lorsqu'il est amené optiquement en face de ladite source par rotation du support 18. Selon une variante de réalisation, les systèmes optiques 10, 10', 10" et 10ʹʹʹ et le support 18 peuvent être d'un seul tenant et constituer ainsi une seule et même pièce.The device 2 comprises a casing 4 defining an open volume closed by a glass 6. This volume encloses a lighting module 8 comprising a light source common light 14 and several optical systems 10,10',10" and 10ʹʹʹ that are mobile relative to the light source 14. More specifically, the light source 14 can be of the electroluminescence diode type arranged on a plate 12. represented as being single. It is however understood that a group of light sources can also be provided, the light sources then preferably being grouped together and adjacent, preferably contiguous to each other. This configuration with several grouped sources makes it possible to obtain light powers greater than that provided by a single source.The light source(s) 14 are therefore common to the various optical systems 10,10',10",10'" of the module 8. The plate 12 and the light source 14 are fixed while the optical systems 10, 10', 10" and 10ʹʹʹ are arranged on a rotating support 18 along an axis of rotation 16. In this case, each of the optical systems 10, 10', 10" and 10'" comprises a reflector 20 with a reflective surface 22 configured to cooperate optically with the light source 14 when the system in question is placed optically in front of said source. One can indeed observe at the figure 1 that the light source 14 is at a distance from the axis of rotation 16 of the optical systems 10, 10′, 10″ and 10′′ and from their support 18. Each of the optical systems 10, 10′, 10″ and 10′′ is configured to be able to cooperate optically with the light source 14 when it is brought optically in front of said source by rotation of the support 18. a single piece and thus constitute a single piece.

Les figures 1 et 2 illustrent bien que la source lumineuse 14 est située à l'avant de l'axe de rotation 16 par rapport à la direction d'éclairage. En d'autres termes, la source lumineuse est située du côté de la glace 6 par rapport à l'axe de rotation 16. Il est toutefois à noter qu'en fonction de la configuration des systèmes optiques, cette implantation de la source lumineuse pourrait être différente. Il est en effet envisageable que les systèmes optiques dévient la lumière provenant de la source dans une direction opposée à la position de la source par rapport à l'axe de rotation, auquel cas ils pourraient dévier la lumière vers l'axe de rotation et au-delà.THE figures 1 and 2 clearly illustrate that the light source 14 is located in front of the axis of rotation 16 with respect to the direction of illumination. In other words, the light source is located on the side of the crystal 6 with respect to the axis of rotation 16. It should however be noted that depending on the configuration of the optical systems, this installation of the light source could be different. It is in fact conceivable that the optical systems deviate the light coming from the source in a direction opposite to the position of the source with respect to the axis of rotation, in which case they could deviate the light towards the axis of rotation and -of the.

Dans le cas précis des représentations aux figures 1 et 2, les systèmes optiques sont au nombre de quatre. Il est toutefois entendu que ce nombre peut être différent, tout en étant supérieur ou égal à 2. Le module peut en effet comprendre par exemple deux ou trois systèmes optiques.In the specific case of representations to figures 1 and 2 , the optical systems are four in number. It is understood, however, that this number may be different, by being greater than or equal to 2. The module may in fact comprise for example two or three optical systems.

La rotation du support 18 est indexée de manière à permettre un positionnement précis de chaque système optique par rapport à la source lumineuse. Cette indexation peut notamment être assurée par des moyens mécaniques et/ou électriques, de manière bien connue en soi de l'homme de métier.The rotation of the support 18 is indexed so as to allow precise positioning of each optical system with respect to the light source. This indexing can in particular be ensured by mechanical and/or electrical means, in a manner well known per se to those skilled in the art.

En l'occurrence, les systèmes optiques comprennent, chacun, un réflecteur 20 en forme de demi-coquille recouvrant au moins partiellement la source lumineuse. La surface réfléchissante 22 du réflecteur 20 peut présenter un profil parabolique dont le foyer est localisé à l'endroit de la source lumineuse lorsque ladite surface est optiquement en face de ladite source, de manière à pouvoir former un faisceau d'éclairage. Cette surface réfléchissante 22 peut, alternativement, présenter un profil elliptique avec un premier foyer localisé à l'endroit de la source lumineuse lorsque ladite surface est optiquement en face de ladite source et avec une lentille située au niveau du deuxième foyer. Ce type de système optique est bien connu en soi de l'homme de métier ; une description détaillée n'est par conséquent pas nécessaire.In this case, the optical systems each comprise a reflector 20 in the form of a half-shell covering at least partially the light source. The reflective surface 22 of the reflector 20 may have a parabolic profile whose focal point is located at the location of the light source when said surface is optically opposite said source, so as to be able to form a lighting beam. This reflective surface 22 may, alternatively, have an elliptical profile with a first focus located at the location of the light source when said surface is optically opposite said source and with a lens located at the level of the second focus. This type of optical system is well known per se to those skilled in the art; a detailed description is therefore not necessary.

D'autres types de systèmes optiques sont envisageables. Les systèmes optiques 10, 10', 10" et 10ʹʹʹ peuvent assurer différentes fonctions d'éclairage et de signalisation, telles notamment une fonction d'éclairage route (communément appelée « High Beam » en anglais), une fonction d'éclairage de croisement avec coupure du faisceau (communément appelée « Low Beam » en anglais), une fonction de signalisation diurne communément désignée par l'acronyme DRL (Daytime Running Light) et une fonction de signalisation de changement de direction (communément appelée « Turn Indicator » en anglais).Other types of optical systems are possible. The 10, 10', 10" and 10ʹʹʹ optical systems can perform various lighting and signaling functions, such as a main beam lighting function (commonly called “High Beam”), a dipped beam lighting function with cut-off beam (commonly called "Low Beam" in English), a daytime signaling function commonly referred to by the acronym DRL (Daytime Running Light) and a direction change signaling function (commonly called "Turn Indicator" in English) .

La figure 3 est une vue de détail de la coupe du système optique 10 du module 8 de la figure 1. Le réflecteur 20 présente en l'occurrence une surface réfléchissante 22 de profil parabolique, de manière à ce que les rayons émis par la source lumineuse 14 dans le demi-espace délimité par la platine 12 soient majoritairement réfléchis par la surface réfléchissante 22 en un faisceau de rayons généralement parallèles. La figure 3 illustre le parcours d'un tel rayon.There picture 3 is a detail view of the section of the optical system 10 of the module 8 of the figure 1 . The reflector 20 in this case has a reflective surface 22 of parabolic profile, so that the rays emitted by the light source 14 in the half-space delimited by the plate 12 are mainly reflected by the reflective surface 22 in a beam generally parallel rays. There picture 3 illustrates the path of such a ray.

La figure 4 est une vue en perspective du réflecteur 20 de la figure 3. On peut bien observer la forme de demi-coquille du réflecteur 20, apte à recouvrir la source lumineuse. Le réflecteur 20 peut présenter des évidements 24 à ses bords latéraux, c'est-à-dire ses bords de part et d'autre de l'axe optique du système optique. Ces évidements sont configurés pour permettre le passage de la source lumineuse 14 le long de ces bords lors de la rotation du support et des systèmes optiques par rapport à la dite source.There figure 4 is a perspective view of the reflector 20 of the picture 3 . One can clearly observe the half-shell shape of the reflector 20, able to cover the light source. The reflector 20 may have recesses 24 at its lateral edges, that is to say its edges on either side of the optical axis of the optical system. These recesses are configured to allow passage of the light source 14 along these edges during the rotation of the support and the optical systems with respect to said source.

La figure 5 illustre une alternative à la présence des évidements 24 sur le réflecteur. En effet, le support peut être mobile en translation suivant son axe de rotation selon une cinématique qui a pour effet que les systèmes optiques qu'il supporte s'éloignent verticalement de la source ou s'en rapprochent lors de leur rotation, de manière à ce que leurs bords évitent d'entrer en contact avec ladite source. Ceci est particulièrement utile pour les systèmes optiques comprenant un réflecteur en forme de demi-coquille dont les bords latéraux sont situés à hauteur de la source lumineuse. Il peut alors être utile que le support suive une cinématique illustrée à la figure 5, à savoir un déplacement combiné en rotation et en translation qui a pour effet de « lever » les systèmes optiques lorsque l'un d'eux quitte sa position de correspondance avec la source lumineuse et de « baisser » les systèmes optiques lorsque l'un d'eux s'approche de sa position de correspondance avec la source lumineuse.There figure 5 illustrates an alternative to the presence of recesses 24 on the reflector. Indeed, the support can be movable in translation along its axis of rotation according to a kinematics which has the effect that the optical systems which it supports move away vertically from the source or approach it during their rotation, so as to that their edges avoid coming into contact with said source. This is particularly useful for optical systems comprising a reflector in the form of a half-shell, the side edges of which are located at the height of the light source. It may then be useful for the support to follow a kinematics illustrated in figure 5 , namely a combined displacement in rotation and in translation which has the effect of "raising" the optical systems when one of them leaves its position of correspondence with the light source and of "lowering" the optical systems when one of them approaches its position of correspondence with the light source.

Alternativement, la cinématique peut s'appliquer uniquement à un ou plusieurs des systèmes optiques par rapport au support. Il est en effet envisageable que le support soit mobile uniquement en rotation et qu'un ou plusieurs des systèmes optiques qu'il supporte soient mobiles par rapport audit support, suivant une composante principale dirigée selon l'axe de rotation, c'est-à-dire essentiellement perpendiculaire au plan de déplacement en rotation.Alternatively, the kinematics may apply only to one or more of the optical systems with respect to the medium. It is in fact possible for the support to be mobile only in rotation and for one or more of the optical systems it supports to be mobile with respect to said support, according to a principal component directed along the axis of rotation, that is to say i.e. essentially perpendicular to the plane of rotational movement.

La cinématique qui vient d'être décrite suit préférentiellement une courbe telle que celle illustrée à la figure 5. Alternativement, elle peut toutefois présenter un profil davantage géométrique, comme par exemple une succession de mouvement de translation pure et de mouvement de rotation pure.The kinematics which has just been described preferably follows a curve such as that illustrated in figure 5 . Alternatively, it may however have a more geometric profile, such as for example a succession of pure translational movement and pure rotational movement.

La figure 6 illustre un exemple de réalisation d'un système d'indexation. Le système 26 comprend essentiellement un poussoir 30, tel qu'une bille, soumis à l'effort élastique d'un ressort 28 et coulissant dans un logement (non représenté) fixe par rapport à la source lumineuse, c'est-à-dire par exemple un bâti du module. Les systèmes optiques 10, 10', 10", 10'" peuvent présenter, chacun, notamment au niveau de leur réflecteur 20, 20', 20", 20'", une encoche 32 apte à coopérer avec le poussoir.There figure 6 illustrates an embodiment of an indexing system. The system 26 essentially comprises a pusher 30, such as a ball, subjected to the force elastic of a spring 28 and sliding in a housing (not shown) fixed relative to the light source, that is to say for example a frame of the module. The optical systems 10, 10', 10", 10'" can each have, in particular at the level of their reflector 20, 20', 20", 20'", a notch 32 capable of cooperating with the pusher.

Alternativement, le système d'indexation peut-être assuré par un système électromécanique. Par exemple, la rotation est assurée par un moteur pas-à-pas et un ou plusieurs capteur(s), par exemple à effet Hall, qui permet(tent) d'assurer le bon positionnement en regard de la source lumineuse.Alternatively, the indexing system can be ensured by an electromechanical system. For example, the rotation is ensured by a stepper motor and one or more sensor(s), for example Hall effect, which makes it possible to ensure the correct positioning facing the light source.

La figure 7 illustre un module d'éclairage et/ou de signalisation selon le deuxième mode de réalisation qui est selon l'invention. Les numéros de référence du premier mode de réalisation sont utilisés dans ce deuxième mode de réalisation pour les éléments identiques ou correspondants, ces numéros étant toutefois majorés de 100 afin de bien distinguer les deux modes de réalisation. Des numéros spécifiques compris entre 100 et 200 sont utilisés pour les éléments spécifiques.There figure 7 illustrates a lighting and/or signaling module according to the second embodiment which is according to the invention. The reference numbers of the first embodiment are used in this second embodiment for identical or corresponding elements, these numbers being however increased by 100 in order to clearly distinguish the two embodiments. Specific numbers between 100 and 200 are used for specific items.

Le module 108 comprend, similairement au module des figures 1 et 2, plusieurs systèmes optiques 110, 110' répartis autour d'un axe de rotation 116. Ces systèmes optiques peuvent être en nombre variable, supérieur ou égal à deux. Ils comprennent, chacun, une lentille 120, 120' à imagerie directe coudée. En effet, chacune des lentilles comprend une surface réfléchissante 122, 122' configurée pour réfléchir les rayons provenant de la source lumineuse 114 vers une face de sortie 136, 136'. La lentille 120, 120' correspond en effet à un volume formé par le déplacement d'une section suivant une génératrice correspondant à une courbe pouvant correspondre à un arc de cercle. La représentation à la figure 7 est une vue en coupe du module et montre par conséquent la section des lentilles 120 et 120'. Elles comprennent une face d'entrée 134 et 134' apte à être disposée en face de la source lumineuse 114 en fonction de leur position angulaire. Les rayons émis par la source lumineuse 114 essentiellement dans un demi-espace délimité par un plan perpendiculaire à l'axe de rotation 116 se propagent alors selon une composante principale parallèle à l'axe de rotation jusqu'à rencontrer la face de réflexion 122, 122'. Cette dernière peut être recouverte d'un revêtement réfléchissant tel qu'un revêtement aluminé. Elle est peut être généralement plane ou du moins proche d'un plan, inclinée par rapport à l'axe de rotation 116 de manière à réfléchir les rayons provenant de la source vers la face de sortie 136 et 136'. Cette dernière peut présenter un profil généralement arrondi de manière à former une surface convexe depuis un point de vue extérieur au module. Le profil de la face de sortie 136, 136' permet, en combinaison avec la géométrie de la face de réflexion 122, 122', d'obtenir différents types de faisceau d'éclairage et/ou de signalisation. En l'occurrence, la lentille 120 à la partie droite de la figure 7 forme un faisceau d'éclairage à coupure, tel que pour une fonction de croisement ou antibrouillard, alors que la lentille 120' à la partie gauche de la figure 7 forme un faisceau sans coupure, tel que pour une fonction d'éclairage route.The module 108 includes, similar to the module of figures 1 and 2 , several optical systems 110, 110' distributed around an axis of rotation 116. These optical systems can be variable in number, greater than or equal to two. They each comprise an angled direct imaging lens 120, 120'. Indeed, each of the lenses comprises a reflective surface 122, 122' configured to reflect the rays coming from the light source 114 towards an exit face 136, 136'. The lens 120, 120' in fact corresponds to a volume formed by the displacement of a section along a generatrix corresponding to a curve which may correspond to an arc of a circle. The representation at the figure 7 is a sectional view of the module and therefore shows the section of the lenses 120 and 120'. They include an input face 134 and 134' capable of being placed opposite the light source 114 depending on their angular position. The rays emitted by the light source 114 essentially in a half-space delimited by a plane perpendicular to the axis of rotation 116 then propagate according to a main component parallel to the axis of rotation until they meet the reflection face 122, 122'. The latter can be covered with a reflective coating such as an aluminized coating. It may be generally flat or at least close to a plane, inclined with respect to the axis of rotation 116 so as to reflect the rays coming from the source towards the exit face 136 and 136'. The latter may have a generally rounded profile so as to form a convex surface from a point of view outside the module. The profile of the exit face 136, 136' makes it possible, in combination with the geometry of the reflection face 122, 122', to obtain different types of lighting and/or signaling beam. In this case, the lens 120 at the right part of the figure 7 forms a cut-off lighting beam, such as for a low beam or fog lamp function, while the lens 120' at the left part of the figure 7 forms a seamless beam, such as for a high beam function.

Les figures 8 et 9 illustrent deux exemples de réalisation du principe du module de la figure 7, correspondant à des troisième et quatrième modes de réalisation, qui sont selon l'invention.THE figures 8 and 9 illustrate two embodiments of the principle of the module of the figure 7 , corresponding to third and fourth embodiments, which are according to the invention.

La figure 8 montre un premier exemple de module à lentilles à imagerie directe coudée. Les numéros de référence de la figure 7 sont utilisés dans ce mode de réalisation pour les éléments identiques ou correspondants, ces numéros étant toutefois majorés de 100 afin de bien distinguer les deux modes de réalisation. Le module 208 comprend en l'occurrence trois systèmes optiques 210, 210' et 210". Chacun de ces systèmes optiques comprend une lentille 220, 220' et 220" qui s'étend de manière non limitée entre les deux lentilles voisines. Il est à noter que la figure illustre les enveloppes des lentilles, c'est-à-dire au-delà de leur intersection avec les lentilles voisines. On comprendra que celle illustration est destinée à illustrer le principe du module et, qu'en pratique, les lentilles seront limitées à leurs intersections avec les lentilles voisines. Les faces de réflexion 222, 222' et 222" sont bien visibles.There figure 8 shows a first example of an angled direct imaging lens module. The reference numbers of the figure 7 are used in this embodiment for identical or corresponding elements, these numbers being however increased by 100 in order to clearly distinguish the two embodiments. The module 208 in this case comprises three optical systems 210, 210' and 210". Each of these optical systems comprises a lens 220, 220' and 220" which extends in an unlimited manner between the two neighboring lenses. It should be noted that the figure illustrates the envelopes of the lenses, that is to say beyond their intersection with the neighboring lenses. It will be understood that this illustration is intended to illustrate the principle of the module and, in practice, the lenses will be limited to their intersections with the neighboring lenses. The reflection faces 222, 222' and 222" are clearly visible.

La figure 9 montre un deuxième exemple de module à lentilles à imagerie directe coudée. Les numéros de référence de la figure 7 sont utilisés dans ce mode de réalisation pour les éléments identiques ou correspondants, ces numéros étant toutefois majorés de 200 afin de bien distinguer ce mode de réalisation des autres. On peut observer que les lentilles 320 et 320' des systèmes optiques 310 et 310' sont limitées, à savoir que leurs parties optiquement actives ne s'étendent pas sur toute la longueur des lentilles mais au contraire sont situées en position essentiellement centrale en formant une portion en saillie et arrondie 336 et 336'. La géométrie spécifique de cette portion centrale permet d'optimiser le faisceau ainsi produit.There figure 9 shows a second example of an angled direct imaging lens module. The reference numbers of the figure 7 are used in this embodiment for identical or corresponding elements, these numbers being however increased by 200 in order to clearly distinguish this embodiment from the others. It can be observed that the lenses 320 and 320' of the optical systems 310 and 310' are limited, namely that their optically active parts do not extend over the entire length of the lenses but on the contrary are located in an essentially central position forming a projecting and rounded portion 336 and 336'. There specific geometry of this central portion makes it possible to optimize the beam thus produced.

Il est à noter que les systèmes optiques avec lentille à imagerie directe, tels qu'illustrés aux figures 7 à 9, peuvent être combinés avec des systèmes optiques à réflecteur, tels qu'illustrés aux figures 1 et 2.It should be noted that the optical systems with direct imaging lens, as illustrated in figures 7 to 9 , can be combined with reflector optical systems, as shown in figures 1 and 2 .

La combinaison de plusieurs modules conformes à l'invention permet de réaliser plusieurs fonctions d'éclairage et/ou de signalisation.The combination of several modules in accordance with the invention makes it possible to perform several lighting and/or signaling functions.

Dans un premier mode de réalisation, la construction des faisceaux des différentes fonctions est effectuée sur la base de différentes sélections des systèmes optiques desdits modules. Ainsi, chaque module est mis dans une position donnée pour obtenir une fonction ou une partie d'une fonction et les faisceaux produits par chacun des systèmes optiques des modules peuvent être combinés de manière à se compléter et ainsi former différentes fonctions. A titre d'exemple, la présence de deux modules avec chacun seulement deux systèmes optiques permet déjà de considérer quatre configurations possibles lorsque les deux modules sont actifs. Un plus grand nombre de modules et/ou un plus grand nombre de systèmes optiques dans chacun des modules permet de considérer un grand nombre de combinaisons et, partant, une grande liberté de conception des faisceaux.In a first embodiment, the construction of the beams of the different functions is carried out on the basis of different selections of the optical systems of said modules. Thus, each module is placed in a given position to obtain a function or part of a function and the beams produced by each of the optical systems of the modules can be combined so as to complement each other and thus form different functions. By way of example, the presence of two modules each with only two optical systems already makes it possible to consider four possible configurations when the two modules are active. A greater number of modules and/or a greater number of optical systems in each of the modules makes it possible to consider a large number of combinations and, consequently, a great freedom of design of the beams.

Dans un second mode de réalisation, éventuellement combiné avec le premier mode, le module est en rotation rapide et continue. Chaque système optique d'un même module forme une partie du faisceau d'une fonction d'éclairage et/ou signalisation, la fonction complète étant obtenue par superposition de ces parties de fonction. Grâce à la persistance rétinienne, l'impression visuelle procurée à un observateur est celle de la fonction complète.In a second embodiment, optionally combined with the first mode, the module is in rapid and continuous rotation. Each optical system of the same module forms part of the beam of a lighting and/or signaling function, the complete function being obtained by superimposing these function parts. Thanks to retinal persistence, the visual impression given to an observer is that of complete function.

Enfin, la source lumineuse 14 peut être éteinte lors du passage d'une fonction d'éclairage et/ou signalisation à une autre. Ce passage doit être aussi rapide que possible (de l'ordre de quelques millisecondes) afin de ne pas être détecté par l'œil d'un observateur. On évite ainsi des déformations de faisceau lumineux qui se produiraient lorsque la surface réfléchissante des systèmes optiques est en dehors de la position focalisée sur la source lumineuse.Finally, the light source 14 can be turned off when switching from one lighting and/or signaling function to another. This passage must be as fast as possible (of the order of a few milliseconds) so as not to be detected by the eye of an observer. This avoids deformations of the light beam which would occur when the reflective surface of the optical systems is outside the position focused on the light source.

Claims (13)

  1. Lighting and/or signalling module (8; 108; 208; 308) for a motor vehicle, comprising:
    - at least one light source (14; 114; 214; 314);
    - at least one optical system (10, 10', 10", 10"'; 110, 110'; 210, 210', 210''; 310, 310', 310") capable of cooperating with the rays emitted by the light source or sources in order to form a light beam;
    the module comprises at least two optical systems (10, 10', 10", 10ʹʹʹ; 110, 110'; 210, 210', 210''; 310, 310', 310'') disposed on a rotary support (18; 118; 218, 318) about an axis of rotation (16; 116, 216, 316) with respect to the light source or sources, the rotary support being capable of selectively positioning each of said systems optically facing the light source or sources, at least one of the optical systems (110, 110'; 210, 210', 210''; 310, 310', 310'') comprising a lens (120, 120'; 220, 220', 220"; 320, 320', 320"), characterized in that it comprises a reflecting surface (122, 122'; 222, 222', 222"; 322, 322', 322") capable of reflecting, by internal reflection, the rays originating from the light source or sources (114) to an output face (136, 136') of the lens when said reflecting surface is optically facing said light source or sources.
  2. Lighting and/or signalling module (8; 108; 208; 308) according to Claim 1, characterized in that each of the optical systems (10, 10', 10", 10ʹʹʹ; 110, 110'; 210, 210', 210"; 310, 310', 310") comprises a reflecting surface (22; 122, 122'; 222, 222', 222"; 322, 322' , 322").
  3. Lighting and/or signalling module (8; 108; 208; 308) according to one of Claims 1 and 2, characterized in that at least one, preferentially each, of the optical systems (10, 10', 10", 10ʹʹʹ; 110, 110'; 210, 210', 210ʹʹ; 310, 310', 310'') comprises an optical focus situated at the point of the light source or sources (14; 114; 214; 314) when said optical system is optically facing said light source or sources.
  4. Lighting and/or signalling module (8; 108; 208; 308) according to Claim 3, characterized in that the optical focuses of the optical systems are disposed on a circle centred on the axis of rotation (16; 116; 216; 316) of said optical systems.
  5. Lighting and/or signalling module (108; 208; 308) according to Claims 1 to 4, characterized in that the or at least one of the lenses (120, 120'; 220, 220', 220ʹʹ; 320, 320', 320ʹʹ) extends along a curved generating line and preferentially comprises a section with an output face (136; 136', 236, 236', 236" ; 336, 336', 336") of the generally rounded rays.
  6. Lighting and/or signalling module (308) according to Claim 5, characterized in that the or at least one of the lenses (320, 320', 320") extending along a curved generating line comprises a protruding portion (336, 336', 336") forming the output face of the rays.
  7. Lighting and/or signalling module (8; 108; 208; 308) according to one of Claims 1 to 6, characterized in that the light source or sources (14; 114; 214; 314) light in a main direction that is generally parallel to the axis of rotation (16; 116, 216, 316) of the support of the optical systems.
  8. Lighting and/or signalling module (8; 108; 208; 308) according to one of Claims 1 to 7, characterized in that it comprises indexing means (26) for the support so as to selectively position each of the optical systems facing the light source or sources, said means preferentially comprising a ball (30) subjected to an elastic force (28) and cooperating with a cavity (32).
  9. Lighting and/or signalling module (8; 108; 208; 308) according to one of Claims 1 to 8, characterized in that it comprises means for displacing the support capable of displacing the support by a combined movement of rotation about its axis of rotation and of translation along said axis, said combined movement being configured to avoid the light source or sources and preferentially following a curve.
  10. Lighting and/or signalling module (8) according to one of Claims 1 to 9, characterized in that at least one of the optical systems (10, 10', 10", 10ʹʹʹ) other than that or those which comprise a lens with a reflecting surface comprises a reflector (20) in half-shell form comprising cut-outs (24) forming a passage for the light source or sources (14) during the rotation of the support (18).
  11. Lighting and/or signalling module (8; 108; 208; 308) according to one of Claims 1 to 10, characterized in that the light source or sources (14; 114; 214; 314) are disposed on a plate (12) extending generally at right angles to the axis of rotation of the support.
  12. Lighting and/or signalling device (2), comprising:
    - a housing (4, 6); and
    - at least one lighting and/or signalling module (8) ;
    characterized in that
    the or at least one of the modules (8) conforms to one of Claims 1 to 11.
  13. Lighting and/or signalling device according to Claim 12, characterized in that it comprises several modules conforming to one of Claims 1 to 11, the device being configured to form at least two lighting and/or signalling functions by means of different selections of the optical systems of the modules.
EP14187197.0A 2013-09-30 2014-09-30 Lighting and/or signalling module with a plurality of rotary optical systems Active EP2853804B1 (en)

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CN106813207B (en) * 2015-11-27 2019-08-23 法雷奥照明湖北技术中心有限公司 Rotary beam pattern adjustment device and illumination and/or signal designation equipment
WO2020020676A1 (en) * 2018-07-27 2020-01-30 Signify Holding B.V. Collimating lens and lighting device

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