EP1621810A1 - Elliptic optical module with shield for vehicles - Google Patents

Elliptic optical module with shield for vehicles Download PDF

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Publication number
EP1621810A1
EP1621810A1 EP05291523A EP05291523A EP1621810A1 EP 1621810 A1 EP1621810 A1 EP 1621810A1 EP 05291523 A EP05291523 A EP 05291523A EP 05291523 A EP05291523 A EP 05291523A EP 1621810 A1 EP1621810 A1 EP 1621810A1
Authority
EP
European Patent Office
Prior art keywords
support
optical module
flap
reflector
elliptical optical
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP05291523A
Other languages
German (de)
French (fr)
Other versions
EP1621810B1 (en
Inventor
Jean-Francois Delourme
Nicolas Simmet
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Vision SAS
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Valeo Vision SAS
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Filing date
Publication date
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1621810A1 publication Critical patent/EP1621810A1/en
Application granted granted Critical
Publication of EP1621810B1 publication Critical patent/EP1621810B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/689—Flaps, i.e. screens pivoting around one of their edges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/47—Attachment thereof

Definitions

  • the present invention relates to the field of elliptical optical modules with concave, intended for a motor vehicle.
  • the field of the invention is, in general, that of motor vehicle headlights.
  • the headlamps can perform various signaling and / or lighting functions, for example position lights, dipped beam headlights, high beam or daytime running lights.
  • Traditional optical modules are essentially composed of a mirror reflector associated with a light source.
  • An elliptical optical module essentially comprises a light source, a reflector and a convex lens.
  • the light source, the reflector and the lens are arranged so as to produce a light beam of given photometry. For example, for a high beam, the light rays emitted by the light source are approximately horizontal when the elliptical optical module is embedded in a motor vehicle.
  • An intermediate piece called “intermediate”, and having no particular optical properties, allows to attach the convex lens to the reflector.
  • the elliptical optical module may include an occluder or cover located between the reflector and the intermediate piece.
  • the blackout retains part of the light rays.
  • Such an elliptical optical module can for example perform a function of low beam.
  • An elliptical optical module without occulter produces on the contrary a light beam of relatively high intensity.
  • Such an elliptical optical module can for example perform a high beam function.
  • the occluder may be a fixed occluder, ie the elliptical module performs only one function, or a movable occluder, which allows the elliptical optical module to perform several functions.
  • An occluder generally comprises a support flap and an optically active flap.
  • the optically active flap makes it possible to obstruct at least part of the light rays.
  • the optically active flap comprises an active edge, typically an upper edge, defining the cutoff of the light beam.
  • the active edge may be substantially horizontal, in particular to fulfill a function of fog lamp, or have another form, according to the regulations in force in Europe, the United States and Japan.
  • the optically active flap may have a substantially flat shape, or a slightly curved shape.
  • the support shutter and the optically active shutter are combined, ie the fixed shutter comprises only fixed components, in particular only one shutter, which serves to obstruct at least part of the light rays emitted by the light source.
  • the optically active flap is movable relative to the support flap.
  • the support flap serves as support for the optically active flap, which effectively serves to obstruct at least a portion of the light rays.
  • the support flap of a movable occluder is conventionally substantially planar and conventionally has a U shape.
  • the support flap is fixed on a support part, generally the reflector itself, so that the plane the support flap is substantially perpendicular to an optical axis of the elliptical optical module.
  • the optically active flap can for example pivot about an axis of rotation under the direct or indirect effect of an actuator.
  • the optically active flap may be integral with a transmission shaft in contact with the actuator.
  • the actuator is controlled by the driver of the motor vehicle. For example, when the driver decides to go from the low beam function to the high beam function, the actuator is controlled so that the optically active flap is lowered.
  • the movable occluder does not interfere with the light rays and the beam thus produced has a relatively high intensity.
  • the actuator is attached directly to the reflector, or directly to the support panel of the movable shield.
  • the active edge of the optically active flap of the occluder can generate optical diffraction.
  • Such diffraction is directly a function of the wavelength of the light rays and may cause chromatic aberrations.
  • chromatic adjustment means to remedy chromatic aberrations. At least part of the shade can be pushed towards the lens, thanks to a chromatic adjustment screw.
  • the adjustment of the chromatism typically takes place during a development step prior to the assembly of the elliptical optical module in the motor vehicle.
  • the shield may bounce due to external vibrations on the support part, typically the reflector or the intermediate part, or on the chromatic adjustment screw if necessary. Such rebounds cause immediate variations in the light beam produced either in the case of a fixed mask, or in the case of a movable occluder with optically active flap raised or rotating, and may eventually alter the occulter.
  • the present invention aims at improving the reliability of an elliptical optical module comprising a concealer.
  • the elliptical optical module according to the invention intended for a motor vehicle, comprising a reflector for receiving a light source, a shield comprising at least one support flap and an optically active flap for obstructing at least a portion of light rays emitted by the light source, a convex lens intended to receive at least a portion of the light rays, is characterized in that the elliptical optical module comprises elastic fixing means for maintaining or positioning the occulteur on a support piece and means adjustment of the chromatism for adjusting the position of at least a portion of the occluder, the resilient fixing means cooperating with the chromatic adjustment means in particular for elastically absorbing adjustments of the position of the occluder during adjustments of chromaticism.
  • the resilient fixing means make it possible to avoid bouncing of the concealer, in particular when the elliptical optical module is subjected to external vibrations.
  • the elliptical optical module according to the present invention is embedded in a motor vehicle, and that it is running, the light beam produced by the light source remains stable.
  • the shield is also less affected by bouncing than in elliptical optical modules according to the prior art.
  • the light source typically comprises a halogen type lamp, a xenon type lamp or at least one light emitting diode.
  • the support piece is preferably substantially parallel to the support flap of the concealer.
  • the resilient fixing means advantageously allow the support flap to be held against the support piece.
  • the resilient fixing means thus make it possible to absorb at least partially the energy produced by rebounds of the support flap in a direction substantially perpendicular to a plane of the support flap.
  • the optically active flap may or may not be also held against the support piece by the fastening means.
  • the present invention is not limited by the part of the occulter which is held on the support part by the elastic fixing means.
  • the present invention is not limited by the relative positions of the support piece and the support flap.
  • the elastic fastening means may also make it possible to avoid or minimize rebounds in a direction substantially parallel to the plane of the support piece, for example vertical or lateral rebounds when the elliptical optical module is embedded in the motor vehicle.
  • the resilient fixing means cooperate with the chromatic adjustment means, which in particular makes it possible to elastically absorb the position adjustments of the occluder during the chromatism adjustments.
  • the elastic fastening means can thus play two roles at once: preventing the shutter flap from oscillating, when it uses a moving flap, and that it moves from its inactive / retracted position to its active position, avoid also oscillations of the occultor, whether of fixed type or mobile type, when the projector is subjected to external vibrations (bad state of the road ...), but also absorption of small movements of the occulteur when one settles his position for problems of chromaticism, by the capacity of these elastic means, for example, to deform.
  • the chromatic adjustment means advantageously comprise a self-tapping screw.
  • the self-tapping screws have the advantage of having, once screwed, a relatively high resistance to rotation, thereby avoiding the introduction of a threaded brake piece.
  • the manufacturing method of the elliptical optical module according to the present invention is thus slightly simplified.
  • the self-tapping screw may be supported by an intermediate piece for otherwise connecting the convex lens to the reflector, or by any other part.
  • the present invention is however not limited by the presence or nature of the chromatic adjustment means.
  • a traditional screw can be used as a means of adjusting the chromaticism.
  • the self-tapping screw advantageously makes it possible to adjust the position of the support flap of the concealer.
  • the self-tapping screw allows for example to push the shutter support flap in the direction of an optical axis of the elliptical optical module.
  • the self-tapping screw can move the occulteur in another direction.
  • the self-tapping screw can adjust the position of another part of the occulteur.
  • the self-tapping screw is advantageously disposed substantially perpendicularly to the support flap of the occluder. Fixing means resiliently allow to bring the support flap against the self-tapping screw.
  • the support flap is thus held on the support part between the self-tapping screw and the elastic fixing means.
  • the present invention is however not limited by the relative positions of the elastic fastening means and chromatic adjustment means.
  • the reflector advantageously comprises the support piece.
  • the resilient fixing means comprise at least one tongue integrated in the reflector.
  • the support piece is included in the reflector and the tongue is integrated in the reflector: the support piece and the elastic fixing means can thus be implemented without additional piece, thereby not making the elliptical optical module manufacturing process more complex.
  • the reflector may comprise a cavity in which the light source may be introduced, and at the other end, a substantially planar contour and substantially parallel to the concealer.
  • the contour acts as a support piece against which the occluder is held.
  • Two tabs integrated in the reflector and located on either side of the contour to ensure the maintenance of the shield, and thus to mitigate the bounces of the shield to the convex lens.
  • only one tab is used or more than two tabs.
  • the support piece is not included in the reflector.
  • the support piece may for example be included in the intermediate piece.
  • the elastic attachment means may for example comprise two tongues integrated in the intermediate piece. The tongues prevent rebounds of the shield to the cavity of the reflector.
  • the support piece may also be separate from the reflector and the intermediate piece.
  • the elastic attachment means may also not be integrated in the reflector or in the intermediate piece.
  • the present invention is not limited by the nature of the elastic fastening means.
  • the optically active flap is movable relative to the support flap.
  • the elliptical optical module advantageously comprises an actuator under the effect of which the optically active flap pivots.
  • the occulteur is thus a mobile occulteur.
  • the support flap conventionally serves as a support for the optically active flap, which effectively makes it possible to obstruct at least part of the light rays.
  • the support flap may for example have a substantially flat shape and roughly U-shaped.
  • a portion of the support flap may be rigidly fixed to the support piece, for example a lower part of the support flap is fixed rigidly between the reflector and the intermediate piece.
  • the self-tapping screw is used to adjust the position of an upper part of the shutter support flap.
  • the upper part of the shutter support flap is however maintained by the resilient fixing means against the support piece.
  • Such an elliptical optical module with a movable occluder can thus fulfill at least two functions, for example high beam when the optically active flap is lowered, and low beam when the flap optically active obstructs a portion of the light rays emitted by the light source.
  • the support flap and the optically active flap are merged.
  • An elliptical optical module comprising such a fixed concave is generally associated with a single function, for example low beam.
  • the elliptical optic module with fixed shield according to the present invention comprises elastic fixing means for maintaining the fixed shield on a support piece.
  • the elliptical optical module may also include chromatic adjustment means for adjusting the position of the fixed occluder.
  • the present invention is therefore not limited by the shape or nature of the occluder.
  • the actuator is advantageously attached to the reflector by means of an actuator support.
  • the intermediate piece and the reflector can both be made of sheet metal, or in another material, of the aluminum type.
  • the metal sheet has the advantage of offering a relatively high mechanical strength for a relatively low weight: a metal sheet reflector will be, for a given mechanical strength, thinner and lighter than an aluminum reflector.
  • aluminum is a material generally easier to mold than sheet metal.
  • the elliptical optical module according to the present invention may comprise an actuator support for indirectly fixing the actuator to the reflector.
  • Elliptical optical modules according to art prior art include an actuator attached directly to the reflector.
  • the actuator support makes it possible to fix the actuator without having a delicate molding to be carried out on the reflector, which can be particularly advantageous in the case of a reflector made of sheet metal.
  • the actuator support may be made of a plastic material, or of another material.
  • the actuator support can be designed so that it can be attached indifferently to a right side or a left side of the reflector.
  • the actuator support has a specific shape such that a given actuator support can be attached only to one side of the reflector.
  • the actuator can be attached directly to the reflector, regardless of the material in which the latter is made.
  • the present invention is not limited by the way in which the movement of the optically active flap is implemented - the optically active flap can for example slide vertically, in a translational movement, or by means allowing the movement of the optically active flap.
  • the reflector advantageously comprises at least one folding fastening tab.
  • the actuator support advantageously comprises at least one attachment slot for receiving the foldable fastening tab, so as to allow the attachment of the actuator support on the reflector.
  • the actuator support is thus fixed to the reflector in a relatively simple manner, without involving additional fasteners.
  • the method of fixing the actuator support is thus relatively easy to implement: simply slide the foldable fastening tab into the mounting slot of the actuator support and fold it over the actuator support.
  • the reflector preferably comprises a plurality of collapsible fastening tabs, for example two.
  • the actuator support preferably includes a plurality of securing slots so that each collapsible fastener tab of the reflector can be inserted and folded into an associated mounting slot of the actuator support.
  • the present invention is however not limited by the way in which the attachment of the actuator support to the reflector is implemented.
  • the actuator support may for example be screwed, clipped or overmolded on the reflector.
  • the actuator is advantageously overmoulded on the actuator support.
  • Fixing the actuator on the reflector thus involves fewer components to position relative to each other.
  • the present invention is however not limited by the way in which the attachment of the actuator to the actuator support is implemented.
  • the actuator may for example be screwed or clipped onto the actuator support.
  • the present invention also relates to a headlight for a motor vehicle and comprising an optical module, in particular elliptical, according to the present invention.
  • the present invention also relates to an elliptical optical module for a motor vehicle.
  • the elliptical optical module comprises a reflector for receiving a light source.
  • the elliptical optical module also includes a shield.
  • the occluder comprises at least one support flap and an optically active flap.
  • the optically active flap makes it possible to obstruct at least a portion of light rays emitted by the light source.
  • the elliptical optical module also includes a convex lens for receiving at least a portion of the light rays.
  • the elliptical optical module also comprises chromatic adjustment means for adjusting the position of the shutter support flap.
  • the chromatic adjustment means may in particular be associated with resilient fixing means for holding the support flap against a support piece.
  • the support flap is thus held against the support piece, while remaining adjustable, while the optically active flap is movable relative to the support flap.
  • the elliptical optical module comprises the chromatic adjustment means for adjusting the position of the support flap, but the support flap is not held elastically against the support piece.
  • Figure 1 is a perspective view of an exemplary elliptical optical module according to a first embodiment of the present invention.
  • FIG. 2 is a diagrammatic view, in section and in detail, of an example of an elliptical optical module according to the first embodiment of the present invention.
  • Figs. 3A and 3B are perspective views respectively front and rear, and in detail of an exemplary elliptical optical module according to a second embodiment of the present invention.
  • An elliptical optical module 1 is intended to be used in a projector not shown for a motor vehicle, not shown.
  • the elliptical optical module 1 comprises a reflector 2, a light source 3 and a convex lens 4.
  • An intermediate piece 15 makes it possible to reattach the convex lens 4 to the reflector 2.
  • the elliptical optical module 1 also comprises a concealer 5, comprising a support flap 6 and an optically active flap 10.
  • the concave 5 is a movable occluder, that is to say that the optically active flap 10 is movable relative to the support flap 6.
  • the optically active flap 10 can pivot under the effect of an actuator 11: the optically active flap 10 is integral with a transmission shaft 16 in contact with the actuator 11.
  • a lower part 17 of the support flap 6 is fixed rigidly between the reflector 2 and the intermediate part 15.
  • a chromatic adjustment screw for example a self-tapping screw 9 makes it possible to adjust the position of an upper part 18 of the shutter support 6, thereby to overcome chromatic aberrations due to optical diffraction on an active edge of the occulter.
  • the self-tapping screw 9 is only relatively slightly displaced under the effect of external vibrations, without the need for additional parts, such as a threaded brake piece.
  • Elastic fixing means 7 make it possible to hold the upper part 18 of the support flap 6 of the concealer 5 against a support part 8.
  • the elastic fixing means 7 comprise a tongue integrated in the reflector 2, on each side of the elliptical optical module 1 .
  • the reflector 2 also comprises the support piece 8.
  • the support piece 8 against which the support flap 6 of the concealer 5 is held is substantially parallel to the support flap 6.
  • the self-tapping screw 9 is in turn substantially perpendicular to the support flap 6 of the concealer 5.
  • the self-tapping screw 9 allows push the support flap 6 in a forward direction, indicated by the arrow F.
  • the elastic fixing means 7 make it possible to avoid bouncing of the support flap 6 of the concealer 5 when the elliptical optical module 1 is embedded in the motor vehicle, and when the latter is in operation.
  • the actuator 11 is in the first embodiment, fixed on an actuator support 12, by at least one fastening screw 19.
  • the actuator support 12 is itself fixed on the reflector 2.
  • the support of Actuator 12 comprises, in this first embodiment, a screwing barrel for receiving the self-tapping screw 9.
  • the actuator is fixed directly on the reflector.
  • the actuator support 12 makes it possible to avoid molding actuator fasteners in the reflector 2, which can be particularly advantageous in the case of a reflector 2 made of sheet metal.
  • FIGS. 3A and 3B illustrate an example of an elliptical optical module according to a second embodiment of the present invention.
  • the elliptical optical module comprises a reflector 2 and a concealer 5.
  • the concealer 5 here also comprises a support flap 6 and an optically active flap 10 capable of pivoting about an axis of rotation under the effect of an actuator 11.
  • the actuator is attached to an actuator support 12.
  • the actuator support 12 is made of a plastic material having thermal resistance. relatively high, so as to be able to withstand the heat created by a light source not shown in Figures 3A and 3B.
  • the actuator 11 is, in the second embodiment, overmolded on the actuator support 12.
  • the elliptical optical module according to the second embodiment of the present invention is easier to manufacture than the elliptical optical module according to the first embodiment of the present invention, because of the absence of fixing screws to fix the actuator. 11 to the actuator support 12.
  • the over-molding of the actuator 11 on the actuator support 11 makes it possible to improve the accuracy and repeatability of the positioning of the actuator 11 with respect to a transmission shaft 16. The reliability of the Elliptical optical module is thus also improved.
  • the reflector 2 is made of sheet metal.
  • the reflector 2 comprises collapsible fastening tabs 13.
  • the actuator support 12 comprises fixing slots 14 in which the collapsible fastening tabs 13 of the reflector 2 can be inserted and folded, thereby allowing a relatively simple attachment to be made.
  • the elliptical optical module according to the second embodiment of the present invention comprises two tongues 7 allowing an elastic fastening of the support flap 6 on a support part 8.
  • the reflector 2 comprises the support part 8 and the tabs 7 are integrated in the reflector, thus avoiding additional parts.
  • the elliptical optical module according to the second embodiment of the present invention also comprises a self-tapping screw 9, disposed substantially perpendicularly to the support flap 6.
  • the position of the support flap is adjustable by a self-tapping screw, but the support flap is not held against the support piece by elastic fastening means.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Lasers (AREA)
  • Optical Radar Systems And Details Thereof (AREA)

Abstract

The module (1) has an elastic fixation unit (7) maintaining or positioning an upper part (18) of a support flap (6) of a blinder (5) on a support piece (8). A self-tapping screw adjusts position of the part (18). The unit (7) cooperates with the screw in order to elastically absorb adjustments of position of the blinder during adjustment of chromatism. The blinder has an active optical flap (10) movable relative to the flap (6). An independent claim is also included for a headlight for a motor vehicle comprises an elliptic optical module.

Description

La présente invention se rapporte au domaine des modules optiques elliptiques à occulteur, destinés à un véhicule automobile.The present invention relates to the field of elliptical optical modules with concave, intended for a motor vehicle.

Le domaine de l'invention est, d'une façon générale, celui des projecteurs de véhicule automobile. Dans ce domaine, les projecteurs peuvent remplir différentes fonctions de signalisation et/ou d'éclairage, par exemple feux de position, feux de croisement, feux de route ou encore feux de jour.The field of the invention is, in general, that of motor vehicle headlights. In this field, the headlamps can perform various signaling and / or lighting functions, for example position lights, dipped beam headlights, high beam or daytime running lights.

On connaît essentiellement deux types de modules d'éclairage et/ou de signalisation possédant chacun une structure distincte : les modules optiques traditionnels et les modules optiques elliptiques.There are essentially two types of lighting and / or signaling modules each having a distinct structure: traditional optical modules and elliptical optical modules.

Les modules optiques traditionnels sont composés essentiellement d'un réflecteur miroir associé à une source lumineuse.Traditional optical modules are essentially composed of a mirror reflector associated with a light source.

Un module optique elliptique comprend essentiellement une source lumineuse, un réflecteur et une lentille convexe. La source lumineuse, le réflecteur et la lentille sont disposés de manière un produire un faisceau lumineux de photométrie donnée. Par exemple, pour un feu de route, les rayons lumineux émis par la source lumineuse sont à peu près horizontaux lorsque le module optique elliptique est embarqué dans un véhicule automobile.An elliptical optical module essentially comprises a light source, a reflector and a convex lens. The light source, the reflector and the lens are arranged so as to produce a light beam of given photometry. For example, for a high beam, the light rays emitted by the light source are approximately horizontal when the elliptical optical module is embedded in a motor vehicle.

Une pièce intermédiaire, dite « intermédiaire », et ne présentant pas de propriétés optiques particulières, permet de rattacher la lentille convexe au réflecteur.An intermediate piece, called "intermediate", and having no particular optical properties, allows to attach the convex lens to the reflector.

Le module optique elliptique peut comprendre un occulteur ou cache situé entre le réflecteur et la pièce intermédiaire. L'occulteur retient une partie des rayons lumineux. Un tel module optique elliptique peut par exemple remplir une fonction de feux de croisement.The elliptical optical module may include an occluder or cover located between the reflector and the intermediate piece. The blackout retains part of the light rays. Such an elliptical optical module can for example perform a function of low beam.

Un module optique elliptique sans occulteur produit au contraire un faisceau lumineux d'intensité relativement élevée. Un tel module optique elliptique peut par exemple remplir une fonction de feux de route.An elliptical optical module without occulter produces on the contrary a light beam of relatively high intensity. Such an elliptical optical module can for example perform a high beam function.

L'occulteur peut être un occulteur fixe, c'est à dire que le module elliptique ne remplit qu'une fonction, ou bien un occulteur mobile, ce qui permet au module optique elliptique de remplir plusieurs fonctions.The occluder may be a fixed occluder, ie the elliptical module performs only one function, or a movable occluder, which allows the elliptical optical module to perform several functions.

Un occulteur comprend de manière générale un volet support et un volet optiquement actif.An occluder generally comprises a support flap and an optically active flap.

Le volet optiquement actif permet d'obstruer au moins une partie des rayons lumineux. Le volet optiquement actif comprend un bord actif, typiquement un bord supérieur, définissant la coupure du faisceau lumineux. Le bord actif peut être sensiblement horizontal, en particulier pour remplir une fonction de feu anti-brouillard, ou bien avoir une autre forme, selon les réglementations en vigueur en Europe, aux Etats-Unis et au Japon. Le volet optiquement actif peut avoir une forme sensiblement plane, ou bien une forme légèrement galbée.The optically active flap makes it possible to obstruct at least part of the light rays. The optically active flap comprises an active edge, typically an upper edge, defining the cutoff of the light beam. The active edge may be substantially horizontal, in particular to fulfill a function of fog lamp, or have another form, according to the regulations in force in Europe, the United States and Japan. The optically active flap may have a substantially flat shape, or a slightly curved shape.

Dans le cas d'un occulteur fixe, le volet support et le volet optiquement actif sont confondus, c'est à dire que l'occulteur fixe ne comprend que des composants fixes, notamment qu'un seul volet, lequel sert à obstruer au moins une partie des rayons lumineux émis par la source lumineuse.In the case of a fixed mask, the support shutter and the optically active shutter are combined, ie the fixed shutter comprises only fixed components, in particular only one shutter, which serves to obstruct at least part of the light rays emitted by the light source.

Dans le cas d'un occulteur mobile, le volet optiquement actif est mobile relativement au volet support. Le volet support sert de support au volet optiquement actif, lequel sert effectivement à obstruer au moins une partie des rayons lumineux.In the case of a movable occluder, the optically active flap is movable relative to the support flap. The support flap serves as support for the optically active flap, which effectively serves to obstruct at least a portion of the light rays.

Le volet support d'un occulteur mobile est classiquement sensiblement plan et a classiquement une forme en U. Le volet support est fixé sur une pièce support, généralement le réflecteur lui-même, de telle sorte que le plan du volet support est sensiblement perpendiculaire à un axe optique du module optique elliptique.The support flap of a movable occluder is conventionally substantially planar and conventionally has a U shape. The support flap is fixed on a support part, generally the reflector itself, so that the plane the support flap is substantially perpendicular to an optical axis of the elliptical optical module.

Le volet optiquement actif peut par exemple pivoter autour d'un axe de rotation sous l'effet direct ou indirect d'un actionneur. Le volet optiquement actif peut être solidaire d'un arbre de transmission en contact avec l'actionneur. L'actionneur est commandé par le conducteur du véhicule automobile. Par exemple, lorsque le conducteur décide de passer de la fonction feux de croisement à la fonction feux de route, l'actionneur est commandé de telle sorte que le volet optiquement actif soit abaissé. L'occulteur mobile ne fait alors pas obstacle aux rayons lumineux et le faisceau ainsi produit a une intensité relativement élevée.The optically active flap can for example pivot about an axis of rotation under the direct or indirect effect of an actuator. The optically active flap may be integral with a transmission shaft in contact with the actuator. The actuator is controlled by the driver of the motor vehicle. For example, when the driver decides to go from the low beam function to the high beam function, the actuator is controlled so that the optically active flap is lowered. The movable occluder does not interfere with the light rays and the beam thus produced has a relatively high intensity.

L'actionneur est fixé directement sur le réflecteur, ou bien directement sur le volet support de l'occulteur mobile.The actuator is attached directly to the reflector, or directly to the support panel of the movable shield.

Toutefois, le bord actif du volet optiquement actif de l'occulteur, qu'il soit mobile ou fixe, peut générer une diffraction optique. Une telle diffraction est directement fonction de la longueur d'onde des rayons lumineux et peut entraîner des aberrations chromatiques.However, the active edge of the optically active flap of the occluder, whether mobile or fixed, can generate optical diffraction. Such diffraction is directly a function of the wavelength of the light rays and may cause chromatic aberrations.

Il est connu d'utiliser des moyens de réglage du chromatisme afin de remédier aux aberrations chromatiques. Au moins une partie de l'occulteur peut être poussée vers la lentille, grâce à une vis de réglage du chromatisme. Le réglage du chromatisme a typiquement lieu lors d'une étape de mise au point préalable à l'assemblage du module optique elliptique dans le véhicule automobile.It is known to use chromatic adjustment means to remedy chromatic aberrations. At least part of the shade can be pushed towards the lens, thanks to a chromatic adjustment screw. The adjustment of the chromatism typically takes place during a development step prior to the assembly of the elliptical optical module in the motor vehicle.

Cependant, lorsqu'un module optique elliptique à occulteur est embarqué dans un véhicule automobile et que ce dernier est en marche, l'occulteur risque de rebondir du fait de vibrations extérieures sur la pièce support, typiquement le réflecteur ou la pièce intermédiaire, ou sur la vis de réglage du chromatisme le cas échéant. De tels rebonds entraînent des variations immédiates du faisceau lumineux produit soit dans le cas d'un occulteur fixe, soit dans le cas d'un occulteur mobile à volet optiquement actif relevé ou en train de pivoter, et risquent à terme d'altérer l'occulteur.However, when an elliptical optics module is embedded in a motor vehicle and the latter is running, the shield may bounce due to external vibrations on the support part, typically the reflector or the intermediate part, or on the chromatic adjustment screw if necessary. Such rebounds cause immediate variations in the light beam produced either in the case of a fixed mask, or in the case of a movable occluder with optically active flap raised or rotating, and may eventually alter the occulter.

La présente invention vise à améliorer la fiabilité d'un module optique elliptique comprenant un occulteur.The present invention aims at improving the reliability of an elliptical optical module comprising a concealer.

Le module optique elliptique selon l'invention, destiné à un véhicule automobile, comprenant un réflecteur destiné à recevoir une source lumineuse, un occulteur comprenant au moins un volet support et un volet optiquement actif permettant d'obstruer au moins une partie de rayons lumineux émis par la source lumineuse, une lentille convexe destinée à recevoir au moins une partie des rayons lumineux, est caractérisé en ce que le module optique elliptique comprend des moyens de fixation élastique permettant de maintenir ou de positionner l'occulteur sur une pièce support et des moyens de réglage du chromatisme permettant de régler la position d'au moins une partie de l'occulteur, les moyens de fixation élastique coopérant avec les moyens de réglage du chromatisme afin notamment d'absorber élastiquement des ajustements de position de l'occulteur lors de réglages de chromatisme.The elliptical optical module according to the invention, intended for a motor vehicle, comprising a reflector for receiving a light source, a shield comprising at least one support flap and an optically active flap for obstructing at least a portion of light rays emitted by the light source, a convex lens intended to receive at least a portion of the light rays, is characterized in that the elliptical optical module comprises elastic fixing means for maintaining or positioning the occulteur on a support piece and means adjustment of the chromatism for adjusting the position of at least a portion of the occluder, the resilient fixing means cooperating with the chromatic adjustment means in particular for elastically absorbing adjustments of the position of the occluder during adjustments of chromaticism.

Les moyens de fixation élastique permettent d'éviter des rebonds de l'occulteur, en particulier lorsque le module optique elliptique est soumis à des vibrations extérieures. Ainsi, lorsque le module optique elliptique selon la présente invention est embarqué dans un véhicule automobile, et que celui-ci est en marche, le faisceau lumineux produit par la source lumineuse reste stable. L'occulteur est également moins altéré du fait des rebonds que dans les modules optiques elliptiques selon l'art antérieur.The resilient fixing means make it possible to avoid bouncing of the concealer, in particular when the elliptical optical module is subjected to external vibrations. Thus, when the elliptical optical module according to the present invention is embedded in a motor vehicle, and that it is running, the light beam produced by the light source remains stable. The shield is also less affected by bouncing than in elliptical optical modules according to the prior art.

La source lumineuse comprend typiquement une lampe de type halogène, une lampe de type xénon ou au moins une diode électroluminescente.The light source typically comprises a halogen type lamp, a xenon type lamp or at least one light emitting diode.

La pièce support est de préférence sensiblement parallèle au volet support de l'occulteur. Les moyens de fixation élastique permettent avantageusement de maintenir le volet support contre la pièce support.The support piece is preferably substantially parallel to the support flap of the concealer. The resilient fixing means advantageously allow the support flap to be held against the support piece.

Les moyens de fixation élastique permettent ainsi d'absorber au moins partiellement l'énergie produite par des rebonds du volet support dans une direction sensiblement perpendiculaire à un plan du volet support.The resilient fixing means thus make it possible to absorb at least partially the energy produced by rebounds of the support flap in a direction substantially perpendicular to a plane of the support flap.

Le volet optiquement actif peut être ou ne pas être également maintenu contre la pièce support par les moyens de fixations.The optically active flap may or may not be also held against the support piece by the fastening means.

La présente invention n'est pas limitée par la partie de l'occulteur qui est maintenue sur la pièce support par les moyens de fixation élastique.The present invention is not limited by the part of the occulter which is held on the support part by the elastic fixing means.

La présente invention n'est pas limitée par les positions relatives de la pièce support et du volet support.The present invention is not limited by the relative positions of the support piece and the support flap.

Les moyens de fixation élastique peuvent également permettre d'éviter ou de minimiser des rebonds dans une direction sensiblement parallèle au plan de la pièce support, par exemple des rebonds verticaux ou latéraux lorsque le module optique elliptique est embarqué dans le véhicule automobile.The elastic fastening means may also make it possible to avoid or minimize rebounds in a direction substantially parallel to the plane of the support piece, for example vertical or lateral rebounds when the elliptical optical module is embedded in the motor vehicle.

Les moyens de fixation élastique coopérent avec les moyens de réglage du chromatisme, ce qui permet notamment d'absorber élastiquement les ajustements de position de l'occulteur lors des réglages de chromatisme. Les moyens de fixation élastique peuvent ainsi jouer deux rôles à la fois : éviter que le volet de l'occulteur n'oscille, quand il utilise un volet mobile, et que celui-ci passe de sa position inactive/escamotée à sa position active, éviter également les oscillations de l'occulteur, qu'il soit de type fixe ou de type mobile, lorsque le projecteur est soumis à des vibrations extérieures (mauvais état de la route ...), mais aussi absorption des petits mouvements de l'occulteur quand on règle sa position pour des problèmes de chromatisme, par la capacité de ces moyens élastiques, par exemple, à se déformer.The resilient fixing means cooperate with the chromatic adjustment means, which in particular makes it possible to elastically absorb the position adjustments of the occluder during the chromatism adjustments. The elastic fastening means can thus play two roles at once: preventing the shutter flap from oscillating, when it uses a moving flap, and that it moves from its inactive / retracted position to its active position, avoid also oscillations of the occultor, whether of fixed type or mobile type, when the projector is subjected to external vibrations (bad state of the road ...), but also absorption of small movements of the occulteur when one settles his position for problems of chromaticism, by the capacity of these elastic means, for example, to deform.

Les moyens de réglage du chromatisme comprennent avantageusement une vis autotaraudeuse.The chromatic adjustment means advantageously comprise a self-tapping screw.

Les vis autotaraudeuses présentent en effet l'avantage de présenter ,une fois vissées, une résistance à la rotation relativement élevée, permettant par là d'éviter la mise en place d'une pièce de frein de filetage. Le procédé de fabrication du module optique elliptique selon la présente invention est ainsi légèrement simplifié.The self-tapping screws have the advantage of having, once screwed, a relatively high resistance to rotation, thereby avoiding the introduction of a threaded brake piece. The manufacturing method of the elliptical optical module according to the present invention is thus slightly simplified.

La vis autotaraudeuse peut être supportée par une pièce intermédiaire permettant par ailleurs de rattacher la lentille convexe au réflecteur, ou par toute autre pièce.The self-tapping screw may be supported by an intermediate piece for otherwise connecting the convex lens to the reflector, or by any other part.

La présente invention n'est toutefois pas limitée par la présence ou par la nature des moyens de réglage du chromatisme. Par exemple, une vis traditionnelle peut être utilisée comme moyen de réglage du chromatisme.The present invention is however not limited by the presence or nature of the chromatic adjustment means. For example, a traditional screw can be used as a means of adjusting the chromaticism.

La vis autotaraudeuse permet avantageusement de régler la position du volet support de l'occulteur.The self-tapping screw advantageously makes it possible to adjust the position of the support flap of the concealer.

La vis autotaraudeuse permet par exemple de pousser le volet support de l'occulteur dans la direction d'un axe optique du module optique elliptique.The self-tapping screw allows for example to push the shutter support flap in the direction of an optical axis of the elliptical optical module.

Alternativement, la vis autotaraudeuse permet de déplacer l'occulteur dans une autre direction.Alternatively, the self-tapping screw can move the occulteur in another direction.

Alternativement, la vis autotaraudeuse permet de régler la position d'une autre partie de l'occulteur.Alternatively, the self-tapping screw can adjust the position of another part of the occulteur.

La vis autotaraudeuse est avantageusement disposée sensiblement perpendiculairement au volet support de l'occulteur. Les moyens de fixation élastique permettent avantageusement de ramener le volet support contre la vis autotaraudeuse.The self-tapping screw is advantageously disposed substantially perpendicularly to the support flap of the occluder. Fixing means resiliently allow to bring the support flap against the self-tapping screw.

Le volet support est ainsi maintenu sur la pièce support entre la vis autotaraudeuse et les moyens de fixation élastique.The support flap is thus held on the support part between the self-tapping screw and the elastic fixing means.

La présente invention n'est toutefois pas limitée par les positions relatives des moyens de fixation élastique et des moyens de réglage du chromatisme.The present invention is however not limited by the relative positions of the elastic fastening means and chromatic adjustment means.

Le réflecteur comprend avantageusement la pièce support. Les moyens de fixation élastiques comprennent au moins une languette intégrée au réflecteur.The reflector advantageously comprises the support piece. The resilient fixing means comprise at least one tongue integrated in the reflector.

La pièce support est comprise dans le réflecteur et la languette est intégrée au réflecteur : la pièce support et les moyens de fixation élastiques peuvent ainsi être mis en oeuvre sans pièce supplémentaire, permettant par là de ne pas rendre le procédé de fabrication du module optique elliptique plus complexe.The support piece is included in the reflector and the tongue is integrated in the reflector: the support piece and the elastic fixing means can thus be implemented without additional piece, thereby not making the elliptical optical module manufacturing process more complex.

Le réflecteur peut comprendre une cavité dans laquelle la source lumineuse peut être introduite, et, à l'autre extrémité, un contour sensiblement plan et sensiblement parallèle à l'occulteur. Le contour fait office de pièce support contre laquelle l'occulteur est maintenu. Deux languettes intégrées au réflecteur et situées de part et d'autre du contour permettent d'assurer le maintien de l'occulteur, et ainsi d'atténuer les rebonds de l'occulteur vers la lentille convexe.The reflector may comprise a cavity in which the light source may be introduced, and at the other end, a substantially planar contour and substantially parallel to the concealer. The contour acts as a support piece against which the occluder is held. Two tabs integrated in the reflector and located on either side of the contour to ensure the maintenance of the shield, and thus to mitigate the bounces of the shield to the convex lens.

Alternativement, une seule languette est utilisée ou bien plus de deux languettes.Alternatively, only one tab is used or more than two tabs.

Alternativement, la pièce support n'est pas comprise dans le réflecteur. La pièce support peut par exemple être comprise dans la pièce intermédiaire. Dans ce cas, les moyens de fixation élastique peuvent par exemple comprendre deux languettes intégrées à la pièce intermédiaire. Les languettes permettent de prévenir des rebonds de l'occulteur vers la cavité du réflecteur.Alternatively, the support piece is not included in the reflector. The support piece may for example be included in the intermediate piece. In this case, the elastic attachment means may for example comprise two tongues integrated in the intermediate piece. The tongues prevent rebounds of the shield to the cavity of the reflector.

La pièce support peut également être distincte du réflecteur et de la pièce intermédiaire.The support piece may also be separate from the reflector and the intermediate piece.

Les moyens de fixation élastique peuvent également ne pas être intégrés au réflecteur, ni à la pièce intermédiaire. De manière générale, la présente invention n'est pas limitée par la nature des moyens de fixation élastique.The elastic attachment means may also not be integrated in the reflector or in the intermediate piece. In general, the present invention is not limited by the nature of the elastic fastening means.

Avantageusement, le volet optiquement actif est mobile relativement au volet support. Le module optique elliptique comprend avantageusement un actionneur sous l'effet duquel le volet optiquement actif pivote.Advantageously, the optically active flap is movable relative to the support flap. The elliptical optical module advantageously comprises an actuator under the effect of which the optically active flap pivots.

L'occulteur est ainsi un occulteur mobile. Le volet support sert classiquement de support au volet optiquement actif, lequel permet effectivement d'obstruer au moins une partie des rayons lumineux.The occulteur is thus a mobile occulteur. The support flap conventionally serves as a support for the optically active flap, which effectively makes it possible to obstruct at least part of the light rays.

Le volet support peut par exemple avoir une forme sensiblement plane et grossièrement en U.The support flap may for example have a substantially flat shape and roughly U-shaped.

Une partie du volet support peut être fixé rigidement sur la pièce support, par exemple une partie basse du volet support est fixée rigidement entre le réflecteur et la pièce intermédiaire.A portion of the support flap may be rigidly fixed to the support piece, for example a lower part of the support flap is fixed rigidly between the reflector and the intermediate piece.

La vis autotaraudeuse permet de régler la position d'une partie haute du volet support de l'occulteur. La partie haute du volet support de l'occulteur est toutefois maintenue par les moyens de fixation élastique contre la pièce support.The self-tapping screw is used to adjust the position of an upper part of the shutter support flap. The upper part of the shutter support flap is however maintained by the resilient fixing means against the support piece.

Un tel module optique elliptique à occulteur mobile peut ainsi remplir au moins deux fonctions, par exemple feux de route lorsque le volet optiquement actif est abaissé, et feux de croisement lorsque le volet optiquement actif obstrue une partie des rayons lumineux émis par la source lumineuse.Such an elliptical optical module with a movable occluder can thus fulfill at least two functions, for example high beam when the optically active flap is lowered, and low beam when the flap optically active obstructs a portion of the light rays emitted by the light source.

Cet exemple n'est bien entendu pas limitatif.This example is of course not limiting.

Alternativement, le volet support et le volet optiquement actif sont confondus.Alternatively, the support flap and the optically active flap are merged.

Un module optique elliptique comprenant un tel occulteur fixe est en général associé à une seule fonction, par exemple feux de croisement. Le module optique elliptique à occulteur fixe selon la présente invention comprend des moyens de fixation élastique permettant de maintenir l'occulteur fixe sur une pièce support. Le module optique elliptique peut également comprendre des moyens de réglage du chromatisme permettant de régler la position de l'occulteur fixe.An elliptical optical module comprising such a fixed concave is generally associated with a single function, for example low beam. The elliptical optic module with fixed shield according to the present invention comprises elastic fixing means for maintaining the fixed shield on a support piece. The elliptical optical module may also include chromatic adjustment means for adjusting the position of the fixed occluder.

La présente invention n'est donc pas limitée par la forme ou la nature de l'occulteur.The present invention is therefore not limited by the shape or nature of the occluder.

L'actionneur est avantageusement fixé au réflecteur par le biais d'un support d'actionneur.The actuator is advantageously attached to the reflector by means of an actuator support.

La pièce intermédiaire et le réflecteur peuvent l'un et l'autre être réalisés en tôle métallique, ou bien dans un autre matériau, du type aluminium.The intermediate piece and the reflector can both be made of sheet metal, or in another material, of the aluminum type.

La tôle métallique présente l'avantage d'offrir une résistance mécanique relativement élevée pour un poids relativement faible : un réflecteur en tôle métallique sera donc, pour une résistance mécanique donnée, plus fin et plus léger qu'un réflecteur en aluminium. En revanche, l'aluminium est un matériau généralement plus facile à mouler que la tôle métallique.The metal sheet has the advantage of offering a relatively high mechanical strength for a relatively low weight: a metal sheet reflector will be, for a given mechanical strength, thinner and lighter than an aluminum reflector. On the other hand, aluminum is a material generally easier to mold than sheet metal.

Le module optique elliptique selon la présente invention peut comprendre un support d'actionneur permettant de fixer indirectement l'actionneur au réflecteur. Les modules optiques elliptiques selon l'art antérieur comprennent un actionneur fixé directement sur le réflecteur. Le support d'actionneur permet de fixer l'actionneur sans avoir de moulage délicat à réaliser sur le réflecteur, ce qui peut être particulièrement avantageux dans le cas d'un réflecteur en tôle métallique.The elliptical optical module according to the present invention may comprise an actuator support for indirectly fixing the actuator to the reflector. Elliptical optical modules according to art prior art include an actuator attached directly to the reflector. The actuator support makes it possible to fix the actuator without having a delicate molding to be carried out on the reflector, which can be particularly advantageous in the case of a reflector made of sheet metal.

Le support d'actionneur peut être réalisé dans un matériau plastique, ou bien dans un autre matériau.The actuator support may be made of a plastic material, or of another material.

Le support d'actionneur peut être conçu de manière à pouvoir être fixé indifféremment sur un côté droit ou un côté gauche du réflecteur.The actuator support can be designed so that it can be attached indifferently to a right side or a left side of the reflector.

Alternativement, le support d'actionneur a une forme spécifique de telle sorte qu'un support d'actionneur donné ne peut être fixé que sur un des côtés du réflecteur.Alternatively, the actuator support has a specific shape such that a given actuator support can be attached only to one side of the reflector.

Alternativement, l'actionneur peut être fixé directement sur le réflecteur, quel que soit le matériau dans lequel ce dernier est réalisé.Alternatively, the actuator can be attached directly to the reflector, regardless of the material in which the latter is made.

De plus, la présente invention n'est pas limitée par la manière dont le mouvement du volet optiquement actif est mis en oeuvre - le volet optiquement actif peut par exemple glisser verticalement, selon un mouvement de translation, ni par les moyens permettant le mouvement du volet optiquement actif.In addition, the present invention is not limited by the way in which the movement of the optically active flap is implemented - the optically active flap can for example slide vertically, in a translational movement, or by means allowing the movement of the optically active flap.

Le réflecteur comprend avantageusement au moins une patte de fixation repliable. Le support d'actionneur comprend avantageusement au moins une fente de fixation destinée à recevoir la patte de fixation repliable, de manière à permettre la fixation du support d'actionneur sur le réflecteur.The reflector advantageously comprises at least one folding fastening tab. The actuator support advantageously comprises at least one attachment slot for receiving the foldable fastening tab, so as to allow the attachment of the actuator support on the reflector.

Le support d'actionneur est ainsi fixé sur le réflecteur d'une manière relativement simple, sans impliquer d'éléments de fixation supplémentaire. Le procédé de fixation du support d'actionneur est ainsi relativement facile à mettre en oeuvre : il suffit de glisser la patte de fixation repliable dans la fente de fixation du support d'actionneur et de la replier sur le support d'actionneur.The actuator support is thus fixed to the reflector in a relatively simple manner, without involving additional fasteners. The method of fixing the actuator support is thus relatively easy to implement: simply slide the foldable fastening tab into the mounting slot of the actuator support and fold it over the actuator support.

Lorsque le réflecteur est réalisé en tôle métallique, une telle patte de fixation repliable est relativement facile à réaliser.When the reflector is made of sheet metal, such a foldable fastening tab is relatively easy to achieve.

Le réflecteur comprend de préférence une pluralité de pattes de fixation repliables, par exemple deux. Le support d'actionneur comprend de préférence une pluralité de fentes de fixation, de telle sorte que chaque patte de fixation repliable du réflecteur puisse être insérée et repliée dans une fente de fixation associée du support d'actionneur.The reflector preferably comprises a plurality of collapsible fastening tabs, for example two. The actuator support preferably includes a plurality of securing slots so that each collapsible fastener tab of the reflector can be inserted and folded into an associated mounting slot of the actuator support.

La présente invention n'est toutefois pas limitée par la manière dont la fixation du support d'actionneur sur le réflecteur est mise en oeuvre. Le support d'actionneur peut par exemple être vissé, clipsé ou encore surmoulé sur le réflecteur.The present invention is however not limited by the way in which the attachment of the actuator support to the reflector is implemented. The actuator support may for example be screwed, clipped or overmolded on the reflector.

L'actionneur est avantageusement surmoulé sur le support d'actionneur.The actuator is advantageously overmoulded on the actuator support.

La fixation de l'actionneur sur le réflecteur fait ainsi intervenir moins de composants à positionner les uns par rapport aux autres.Fixing the actuator on the reflector thus involves fewer components to position relative to each other.

La présente invention n'est toutefois pas limitée par la manière dont la fixation de l'actionneur sur le support d'actionneur est mise en oeuvre. L'actionneur peut par exemple être vissé ou clipsé sur le support d'actionneur.The present invention is however not limited by the way in which the attachment of the actuator to the actuator support is implemented. The actuator may for example be screwed or clipped onto the actuator support.

La présente invention a également pour objet un projecteur destiné à un véhicule automobile et comprenant un module optique, notamment elliptique, selon la présente invention.The present invention also relates to a headlight for a motor vehicle and comprising an optical module, in particular elliptical, according to the present invention.

La présente invention a également pour objet un module optique elliptique, destiné à un véhicule automobile. Le module optique elliptique comprend un réflecteur destiné à recevoir une source lumineuse. Le module optique elliptique comprend également un occulteur. L'occulteur comprend au moins un volet support et un volet optiquement actif. Le volet optiquement actif permet d'obstruer au moins une partie de rayons lumineux émis par la source lumineuse. Le module optique elliptique comprend également une lentille convexe destinée à recevoir au moins une partie des rayons lumineux. Le module optique elliptique comprend également des moyens de réglage du chromatisme permettant de régler la position du volet support de l'occulteur.The present invention also relates to an elliptical optical module for a motor vehicle. The elliptical optical module comprises a reflector for receiving a light source. The elliptical optical module also includes a shield. The occluder comprises at least one support flap and an optically active flap. The optically active flap makes it possible to obstruct at least a portion of light rays emitted by the light source. The elliptical optical module also includes a convex lens for receiving at least a portion of the light rays. The elliptical optical module also comprises chromatic adjustment means for adjusting the position of the shutter support flap.

Les moyens de réglage du chromatisme peuvent notamment être associés à des moyens de fixation élastiques permettant de maintenir le volet support contre une pièce support. Dans le cas d'un occulteur mobile, le volet support est ainsi maintenu contre la pièce support, tout en restant réglable, tandis que le volet optiquement actif est mobile relativement au volet support.The chromatic adjustment means may in particular be associated with resilient fixing means for holding the support flap against a support piece. In the case of a movable occluder, the support flap is thus held against the support piece, while remaining adjustable, while the optically active flap is movable relative to the support flap.

Alternativement, le module optique elliptique comprend les moyens de réglage du chromatisme permettant de régler la position du volet support, mais le volet support n'est pas maintenu de façon élastique contre le pièce support.Alternatively, the elliptical optical module comprises the chromatic adjustment means for adjusting the position of the support flap, but the support flap is not held elastically against the support piece.

L'invention est décrite ci-après plus en détail à l'aide de figures ne représentant qu'un mode de réalisation préféré de l'invention.The invention is described below in more detail with the aid of figures representing only a preferred embodiment of the invention.

La figure 1 est une vue en perspective d'un exemple de module optique elliptique selon un premier mode de réalisation de la présente invention.Figure 1 is a perspective view of an exemplary elliptical optical module according to a first embodiment of the present invention.

La figure 2 est une vue schématique, en coupe et en détail, d'un exemple de module optique elliptique selon le premier mode de réalisation de la présente invention.FIG. 2 is a diagrammatic view, in section and in detail, of an example of an elliptical optical module according to the first embodiment of the present invention.

Les figures 3A et 3B sont des vues en perspective respectivement avant et arrière, et en détail, d'un exemple de module optique elliptique selon un second mode de réalisation de la présente invention.Figs. 3A and 3B are perspective views respectively front and rear, and in detail of an exemplary elliptical optical module according to a second embodiment of the present invention.

On notera que des éléments ou parties identiques ou similaires ont été désignés par les mêmes signes de référence sur les différentes figures.It should be noted that identical or similar elements or parts have been designated by the same reference signs in the various figures.

Un module optique elliptique 1 selon le premier mode de réalisation est destiné à être utilisé dans un projecteur non représenté pour un véhicule automobile non représenté. Le module optique elliptique 1 comprend un réflecteur 2, une source lumineuse 3 et une lentille convexe 4.An elliptical optical module 1 according to the first embodiment is intended to be used in a projector not shown for a motor vehicle, not shown. The elliptical optical module 1 comprises a reflector 2, a light source 3 and a convex lens 4.

Une pièce intermédiaire 15 permet de rattacher la lentille convexe 4 au réflecteur 2.An intermediate piece 15 makes it possible to reattach the convex lens 4 to the reflector 2.

Le module optique elliptique 1 comprend également un occulteur 5, comprenant un volet support 6 et un volet optiquement actif 10. Dans le premier mode de réalisation, l'occulteur 5 est un occulteur mobile, c'est à dire que le volet optiquement actif 10 est mobile relativement au volet support 6.The elliptical optical module 1 also comprises a concealer 5, comprising a support flap 6 and an optically active flap 10. In the first embodiment, the concave 5 is a movable occluder, that is to say that the optically active flap 10 is movable relative to the support flap 6.

Le volet optiquement actif 10 peut pivoter sous l'effet d'un actionneur 11 : le volet optiquement actif 10 est solidaire d'un arbre de transmission 16 en contact avec l'actionneur 11.The optically active flap 10 can pivot under the effect of an actuator 11: the optically active flap 10 is integral with a transmission shaft 16 in contact with the actuator 11.

Une partie basse 17 du volet support 6 est fixée rigidement entre le réflecteur 2 et la pièce intermédiaire 15. Toutefois, une vis de réglage du chromatisme, par exemple une vis autotaraudeuse 9, permet de régler la position d'une partie haute 18 du volet support 6, permettant par-là de remédier à des aberrations chromatiques dues à une diffraction optique sur un bord actif de l'occulteur.A lower part 17 of the support flap 6 is fixed rigidly between the reflector 2 and the intermediate part 15. However, a chromatic adjustment screw, for example a self-tapping screw 9, makes it possible to adjust the position of an upper part 18 of the shutter support 6, thereby to overcome chromatic aberrations due to optical diffraction on an active edge of the occulter.

Une fois le chromatisme réglé, la vis autotaraudeuse 9 n'est que relativement peu déplacée sous l'effet de vibrations extérieures, et ce sans faire intervenir de pièce supplémentaire, telle qu'une pièce de frein de filetage.Once the chromatism has been set, the self-tapping screw 9 is only relatively slightly displaced under the effect of external vibrations, without the need for additional parts, such as a threaded brake piece.

Des moyens de fixation élastique 7 permettent de maintenir la partie haute 18 du volet support 6 de l'occulteur 5 contre une pièce support 8. Les moyens de fixation élastique 7 comprennent une languette intégrée au réflecteur 2, de chaque côté du module optique elliptique 1.Elastic fixing means 7 make it possible to hold the upper part 18 of the support flap 6 of the concealer 5 against a support part 8. The elastic fixing means 7 comprise a tongue integrated in the reflector 2, on each side of the elliptical optical module 1 .

Le réflecteur 2 comprend également la pièce support 8.The reflector 2 also comprises the support piece 8.

La pièce support 8 contre laquelle le volet support 6 de l'occulteur 5 est maintenu est sensiblement parallèle au volet support 6. La vis autotaraudeuse 9 est quant à elle sensiblement perpendiculaire au volet support 6 de l'occulteur 5. La vis autotaraudeuse 9 permet de pousser le volet support 6 dans une direction avant, indiquée par la flèche F.The support piece 8 against which the support flap 6 of the concealer 5 is held is substantially parallel to the support flap 6. The self-tapping screw 9 is in turn substantially perpendicular to the support flap 6 of the concealer 5. The self-tapping screw 9 allows push the support flap 6 in a forward direction, indicated by the arrow F.

Les moyens de fixation élastique 7 permettent d'éviter des rebonds du volet support 6 de l'occulteur 5 lorsque le module optique elliptique 1 est embarqué dans le véhicule automobile, et que ce dernier est en marche.The elastic fixing means 7 make it possible to avoid bouncing of the support flap 6 of the concealer 5 when the elliptical optical module 1 is embedded in the motor vehicle, and when the latter is in operation.

L'actionneur 11 est dans le premier mode de réalisation, fixé sur un support d'actionneur 12, par au moins une vis de fixation 19. Le support d'actionneur 12 est lui-même fixé sur le réflecteur 2. Le support d'actionneur 12 comprend, dans ce premier mode de réalisation, un fût de vissage permettant d'accueillir la vis autotaraudeuse 9.The actuator 11 is in the first embodiment, fixed on an actuator support 12, by at least one fastening screw 19. The actuator support 12 is itself fixed on the reflector 2. The support of Actuator 12 comprises, in this first embodiment, a screwing barrel for receiving the self-tapping screw 9.

Dans un mode de réalisation non représenté, l'actionneur est fixé directement sur le réflecteur.In an embodiment not shown, the actuator is fixed directly on the reflector.

Le support d'actionneur 12 permet d'éviter de mouler des fixations d'actionneur dans le réflecteur 2, ce qui peut être particulièrement avantageux dans le cas d'un réflecteur 2 en tôle métallique.The actuator support 12 makes it possible to avoid molding actuator fasteners in the reflector 2, which can be particularly advantageous in the case of a reflector 2 made of sheet metal.

Les figures 3A et 3B illustrent d'un exemple de module optique elliptique selon un second mode de réalisation de la présente invention.FIGS. 3A and 3B illustrate an example of an elliptical optical module according to a second embodiment of the present invention.

Le module optique elliptique comprend un réflecteur 2 et un occulteur 5. L'occulteur 5 comprend ici aussi un volet support 6 et un volet optiquement actif 10 susceptible de pivoter autour d'un axe de rotation sous l'effet d'un actionneur 11.The elliptical optical module comprises a reflector 2 and a concealer 5. The concealer 5 here also comprises a support flap 6 and an optically active flap 10 capable of pivoting about an axis of rotation under the effect of an actuator 11.

Dans le second mode de réalisation de la présente invention, l'actionneur est fixé à un support d'actionneur 12. Le support d'actionneur 12 est réalisé dans une matière plastique présentant une résistance thermique relativement élevée, de manière à pouvoir résister à la chaleur créée par une source lumineuse non représentée sur les figures 3A et 3B.In the second embodiment of the present invention, the actuator is attached to an actuator support 12. The actuator support 12 is made of a plastic material having thermal resistance. relatively high, so as to be able to withstand the heat created by a light source not shown in Figures 3A and 3B.

L'actionneur 11 est, dans le second mode de réalisation, surmoulé sur le support d'actionneur 12.The actuator 11 is, in the second embodiment, overmolded on the actuator support 12.

Le module optique elliptique selon le second mode de réalisation de la présente invention est plus facile à fabriquer que le module optique elliptique selon le premier mode de réalisation de la présente invention, du fait de l'absence de vis de fixation pour fixer l'actionneur 11 au support d'actionneur 12. Le surmoulage de l'actionneur 11 sur le support d'actionneur 11 permet d'améliorer la précision et la répétabilité du positionnement de l'actionneur 11 par rapport à un arbre de transmission 16. La fiabilité du module optique elliptique est ainsi également améliorée.The elliptical optical module according to the second embodiment of the present invention is easier to manufacture than the elliptical optical module according to the first embodiment of the present invention, because of the absence of fixing screws to fix the actuator. 11 to the actuator support 12. The over-molding of the actuator 11 on the actuator support 11 makes it possible to improve the accuracy and repeatability of the positioning of the actuator 11 with respect to a transmission shaft 16. The reliability of the Elliptical optical module is thus also improved.

Dans le second mode de réalisation de la présente invention, le réflecteur 2 est en tôle métallique. Le réflecteur 2 comprend des pattes de fixation repliables 13. Le support d'actionneur 12 comprend des fentes de fixation 14 dans lesquelles les pattes de fixation repliables 13 du réflecteur 2 peuvent être insérées et repliées, permettant par-là une fixation relativement simple à mettre en oeuvre du support d'actionneur 12 sur le réflecteur 2.In the second embodiment of the present invention, the reflector 2 is made of sheet metal. The reflector 2 comprises collapsible fastening tabs 13. The actuator support 12 comprises fixing slots 14 in which the collapsible fastening tabs 13 of the reflector 2 can be inserted and folded, thereby allowing a relatively simple attachment to be made. actuator support 12 on the reflector 2.

Par ailleurs, le module optique elliptique selon le second mode de réalisation de la présente invention comprend deux languettes 7 permettant une fixation élastique du volet support 6 sur une pièce support 8. Le réflecteur 2 comprend la pièce support 8 et les languettes 7 sont intégrées au réflecteur, permettant ainsi d'éviter des pièces supplémentaires.Furthermore, the elliptical optical module according to the second embodiment of the present invention comprises two tongues 7 allowing an elastic fastening of the support flap 6 on a support part 8. The reflector 2 comprises the support part 8 and the tabs 7 are integrated in the reflector, thus avoiding additional parts.

Le module optique elliptique selon le second mode de réalisation de la présente invention comprend également une vis autotaraudeuse 9, disposée sensiblement perpendiculairement au volet support 6.The elliptical optical module according to the second embodiment of the present invention also comprises a self-tapping screw 9, disposed substantially perpendicularly to the support flap 6.

Selon un mode de réalisation alternatif et non représenté, la position du volet support est réglable par une vis autotaraudeuse, mais le volet support n'est pas maintenu contre la pièce support par des moyens de fixation élastique.According to an alternative embodiment and not shown, the position of the support flap is adjustable by a self-tapping screw, but the support flap is not held against the support piece by elastic fastening means.

Les modes de réalisation représentés aux figures sont alternatifs ou peuvent être associés/cumulés.The embodiments shown in the figures are alternative or may be associated / cumulated.

Claims (13)

Module optique elliptique (1), destiné à un véhicule automobile, comprenant - réflecteur (2) destiné à recevoir une source lumineuse (3), - un occulteur (5) comprenant au moins un volet support (6) et un volet optiquement actif (10) permettant d'obstruer au moins une partie de rayons lumineux émis par la source lumineuse, - une lentille convexe (4) destinée à recevoir au moins une partie des rayons lumineux,
caractérisé en ce que le module optique elliptique comprend des moyens de fixation élastique (7) permettant de maintenir ou de positionner l'occulteur sur une pièce support (8) et des moyens de réglage du chromatisme (9) permettant de régler la position d'au moins une partie de l'occulteur (5), lesdits moyens de fixation élastique (7) coopérant avec les moyens de réglage du chromatisme afin notamment d'absorber élastiquement des ajustements de position de l'occulteur lors de réglages de chromatisme. Elliptical optical module (1), intended for a motor vehicle, comprising reflector (2) for receiving a light source (3), - a shield (5) comprising at least one support flap (6) and an optically active flap (10) for obstructing at least a portion of light rays emitted by the light source, a convex lens (4) intended to receive at least a portion of the light rays,
characterized in that the elliptical optical module comprises resilient fixing means (7) for holding or positioning the shield on a support member (8) and chromatic adjustment means (9) for adjusting the position of at least a part of the occluder (5), said resilient fixing means (7) cooperating with the chromatic adjustment means in particular for elastically absorbing adjustments of the position of the occluder during chromatism adjustments. Module selon la revendication précédente, caractérisé en ce que le volet optiquement actif (10) est fixe ou en en ce qu'il est mobile par rapport au volet support (6).Module according to the preceding claim, characterized in that the optically active flap (10) is fixed or in that it is movable relative to the support flap (6). Module optique elliptique (1) selon l'une des revendications précédentes, caractérisé en ce que la pièce support (8) est sensiblement parallèle au volet support (6) de l'occulteur, et en ce que les moyens de fixation élastique (7) permettent de maintenir le volet support contre la pièce support.Elliptical optical module (1) according to one of the preceding claims, characterized in that the support part (8) is substantially parallel to the support flap (6) of the concealer, and in that the elastic fixing means (7) keep the support flap against the support part. Module optique elliptique (1) selon la revendication 3, comprenant des moyens de réglage du chromatisme (9) permettant de régler la position d'au moins une partie de l'occulteur (5).Elliptical optical module (1) according to claim 3, comprising chromatic adjustment means (9) for adjusting the position of at least a portion of the occluder (5). Module optique elliptique (1) selon l'une des revendications 1 à 4, caractérisé en ce que les moyens de réglage du chromatisme (9) comprennent une vis autotaraudeuse.Elliptical optical module (1) according to one of claims 1 to 4, characterized in that the chromatic adjustment means (9) comprise a self-tapping screw. Module optique elliptique (1) selon la revendication 5, caractérisé en ce que la vis autotaraudeuse permet de régler la position du volet support de l'occulteur.Elliptical optical module (1) according to claim 5, characterized in that the self-tapping screw is used to adjust the position of the shutter support flap. Module optique elliptique selon la revendication 6, caractérisé en ce que la vis autotaraudeuse (9) est disposée sensiblement perpendiculairement au volet support (6) de l'occulteur (5), les moyens de fixation élastique permettent notamment de ramener le volet support contre la vis autotaraudeuse.Elliptical optical module according to claim 6, characterized in that the self-tapping screw (9) is arranged substantially perpendicularly to the support flap (6) of the concealer (5), the elastic fixing means in particular allow to bring the support flap against the self tapping screw. Module optique elliptique (1) selon l'une des revendications précédentes, caractérisé en ce que le réflecteur (2) comprend la pièce support (8), et en ce que les moyens de fixation élastiques comprennent au moins une languette (7) intégrée au réflecteur.Elliptical optical module (1) according to one of the preceding claims, characterized in that the reflector (2) comprises the support piece (8), and in that the resilient fixing means comprise at least one tongue (7) integrated in the reflector. Module optique elliptique (1) selon l'une des revendications précédentes, caractérisé en ce que le volet optiquement actif (10) est mobile relativement au volet support, et en ce que le module optique elliptique comprend un actionneur (11) sous l'effet duquel le volet optiquement actif pivote.Elliptical optical module (1) according to one of the preceding claims, characterized in that the optically active flap (10) is movable relative to the support flap, and in that the elliptical optical module comprises an actuator (11) under the effect which the optically active flap pivots. Module optique elliptique (1) selon la revendication 8, caractérisé en ce que l'actionneur (11) est fixé au réflecteur (2) par le biais d'un support d'actionneur (12).Elliptical optical module (1) according to claim 8, characterized in that the actuator (11) is fixed to the reflector (2) by means of an actuator support (12). Module optique elliptique (1) selon la revendication 8, caractérisé en ce que le réflecteur (2) comprend au moins une patte de fixation repliable (13), et en ce que le support d'actionneur (12) comprend au moins une fente de fixation (14) destinée à recevoir la patte de fixation repliable, de manière à permettre la fixation du support d'actionneur sur le réflecteur.Elliptical optical module (1) according to claim 8, characterized in that the reflector (2) comprises at least one collapsible fastening tab (13), and in that the actuator support (12) comprises at least one slot of fastener (14) for receiving the collapsible fastening tab, so as to allow attachment of the actuator support to the reflector. Module optique elliptique (1) selon la revendication 10 ou 11, caractérisé en ce que l'actionneur (11) est surmoulé sur le support d'actionneur (12).Elliptical optical module (1) according to claim 10 or 11, characterized in that the actuator (11) is overmolded on the actuator support (12). Projecteur destiné à un véhicule automobile comprenant un module optique elliptique selon l'une des revendications précédentes.Headlight for a motor vehicle comprising an elliptical optical module according to one of the preceding claims.
EP05291523A 2004-07-30 2005-07-13 Elliptic optical module with shield for vehicles Not-in-force EP1621810B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0408490A FR2873788B1 (en) 2004-07-30 2004-07-30 ELLIPTICAL OPTICAL MODULE WITH OCCULTOR FOR MOTOR VEHICLE

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EP1621810A1 true EP1621810A1 (en) 2006-02-01
EP1621810B1 EP1621810B1 (en) 2007-08-01

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US (1) US7534019B2 (en)
EP (1) EP1621810B1 (en)
JP (1) JP4681385B2 (en)
AT (1) ATE368827T1 (en)
DE (1) DE602005001817T2 (en)
FR (1) FR2873788B1 (en)

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JP2006049315A (en) 2006-02-16
JP4681385B2 (en) 2011-05-11
DE602005001817D1 (en) 2007-09-13
US7534019B2 (en) 2009-05-19
US20060114677A1 (en) 2006-06-01
DE602005001817T2 (en) 2008-04-17
ATE368827T1 (en) 2007-08-15
FR2873788B1 (en) 2006-10-13
EP1621810B1 (en) 2007-08-01
FR2873788A1 (en) 2006-02-03

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