EP3594563B1 - Lighting device with lens illuminated by a host light - Google Patents
Lighting device with lens illuminated by a host light Download PDFInfo
- Publication number
- EP3594563B1 EP3594563B1 EP19179336.3A EP19179336A EP3594563B1 EP 3594563 B1 EP3594563 B1 EP 3594563B1 EP 19179336 A EP19179336 A EP 19179336A EP 3594563 B1 EP3594563 B1 EP 3594563B1
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- EP
- European Patent Office
- Prior art keywords
- lens
- photons
- light
- color
- source
- Prior art date
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Images
Classifications
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- 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
- F21S41/24—Light guides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
- F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
- F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
- F21S41/12—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of emitted light
- F21S41/125—Coloured light
-
- 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]
- F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
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- 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
- F21S41/18—Combination of light sources of different types or shapes
-
- 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
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- 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
- F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
- F21V17/00—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages
- F21V17/10—Fastening of component parts of lighting devices, e.g. shades, globes, refractors, reflectors, filters, screens, grids or protective cages characterised by specific fastening means or way of fastening
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2102/00—Exterior vehicle lighting devices for illuminating purposes
- F21W2102/10—Arrangement or contour of the emitted light
- F21W2102/13—Arrangement or contour of the emitted light for high-beam region or low-beam region
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21W—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO USES OR APPLICATIONS OF LIGHTING DEVICES OR SYSTEMS
- F21W2107/00—Use or application of lighting devices on or in particular types of vehicles
- F21W2107/10—Use or application of lighting devices on or in particular types of vehicles for land vehicles
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2113/00—Combination of light sources
- F21Y2113/10—Combination of light sources of different colours
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F21—LIGHTING
- F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
- F21Y2115/00—Light-generating elements of semiconductor light sources
- F21Y2115/10—Light-emitting diodes [LED]
- F21Y2115/15—Organic light-emitting diodes [OLED]
Definitions
- the invention relates to lighting devices, and more precisely those which comprise at least one source of photons and one lens participating in the production of a photometric function.
- photometric function means both a lighting photometric function, a signaling photometric function or a light effect photometric function, possibly decorative.
- lighting devices comprising a source generating photons and an elongated lens and acting on these photons so that they move towards a front part and participate in a chosen photometric function. It will be noted that such lighting devices can be part of an optical unit possibly performing at least one other photometric function.
- the photometric function of the lighting device can, for example, be chosen from among a main beam function, a dipped beam (or low beam) function, and a fog lamp function. But it could also be a photometric signaling function.
- FR2918040A1 describes a motor vehicle lighting or signaling device consisting of a transparent material inside which light diffusion focal points are located only at predetermined locations to diffuse the light emitted by at least one light source associated with the lighting or signaling device. These light sources can be of different colors.
- this welcome light function may consist of operation of the turn signals or of the stop or position lights (or pilot light) for a few seconds.
- the welcome light function does not use the main or dipped beam headlights, in particular because it is forbidden to use them in town and their electricity consumption is relatively high and therefore could discharge a very low battery charge.
- the welcome light function must therefore be performed by a source other than that of the main beam or dipped beam function. It is recalled that currently it is prohibited by the regulations to have a single color reception source. It is in fact necessary that when the photometric measurements are taken, the color of the welcome light is drowned in the function of main beam or dipped beam, that is to say that the eye can see the welcome light color but that the optical measurement of this welcome light cannot be measured by the measuring device.
- the object of the invention is therefore in particular to improve the situation.
- a lighting device comprising a first source generating first photons defining a light of a first color, and a lens of elongated shape and acting on the first photons generated so that they move towards a part before and participate in a chosen photometric function.
- the lighting of the lens by at least one of its ends, without using or disturbing the photometric function advantageously makes it possible to highlight the part of the lighting device which contributes to the style and/or to the signature, and therefore can allow at the same time to highlight the system which is equipped with this lighting device.
- the invention also proposes a vehicle optical unit, optionally of the automotive type, and comprising at least one lighting device of the type presented above.
- the invention also proposes a vehicle, optionally of the automobile type, and comprising at least one lighting device of the type of that presented above and/or at least one optical unit of the type of that presented above.
- the object of the invention is in particular to propose a lighting device DE comprising a first source of photons S1 and a lens L participating together in a chosen photometric function, and at least one second source of photons S2 supplying at least one light guide Gj responsible for illuminating this lens L.
- the lighting device DE is intended to equip an optical unit BO of a vehicle of the automobile type, such as for example a car.
- a lighting device DE can be an item of equipment in itself (possibly comprising its own casing and its own protective glass), or it can be part of equipment other than a vehicle headlight unit.
- a DE lighting device can be part of any vehicle (land, sea (or river), or air), any installation, including industrial type, any device ( or system), including consumer type, and any building.
- the optical unit BO (comprising at least one lighting device DE) is a front projector (or headlight) ensuring at least one photometric function of lighting.
- the lighting device DE is a lighting device capable of providing at least one photometric function of lighting or signaling or of lighting effect, possibly decorative, since this photometric function requires at least a photon source and a lens.
- the X direction is a so-called longitudinal direction because it is intended to be parallel to a longitudinal side of a vehicle
- the Y direction is a so-called transverse direction because it is intended to be perpendicular to the longitudinal sides of this vehicle and therefore perpendicular to the longitudinal direction X
- the Z direction is a vertical direction, perpendicular to the longitudinal X and transverse Y directions.
- a vehicle optical unit BO here a front headlight
- a housing BB and a protective glass GP together delimiting a cavity housing a lighting device DE according to the invention.
- the BB box is intended, here, to be secured to a part of the bodywork of a vehicle (here in a front part, such as for example a front wing). It is made of a rigid material, such as for example a plastic or synthetic material. In this case, it can be made by molding.
- the protective glass GP can, for example, be made of glass or plastic. It (GP) is fixedly secured to a front part of the housing BB, for example by gluing, welding or screwing. Furthermore, it (GP) may optionally have one or more colors chosen from crystal white, red and orange.
- a lighting device DE comprises a first source S1, a lens L, and at least one second source S2j associated with a light guide Gj.
- the first source S1 is arranged so as to generate first photons which define a light of a first color (for example white).
- This first source of photons S1 can, for example, comprise at least one light-emitting diode, of the conventional type (or LED (“Light-Emitting Diode”)) or of the organic type (or OLED (“Organic Light-Emitting Diode”)) , or a laser diode.
- it (S1) comprises four groups of at least one light-emitting diode.
- each group can comprise several (at least two) light-emitting diodes.
- control means which can, for example, be part of at least one printed circuit board (not visible on the figure 2 ), possibly of the PCB (Printed Circuit Board) type. It will be noted that the first source of photons S1 can optionally also be installed on this printed circuit board.
- Its main dimension (between its opposite ends E1j) extends along the transverse direction Y.
- This lens L is arranged so as to act on the first photons generated by the first source S1 so that they move towards a front part and take part in a chosen photometric function.
- This front part is located in front of the front face FV of the lens L, that is to say the face which is here placed facing the glass GP and through which the first photons on which the lens L acts emerge. In the example illustrated without limitation on the figure 1 , this front part is the GP glass.
- this lens L can, for example, be made by molding (optionally by multilayer injection) of a transparent plastic material such as polymethyl methacrylate (or PMMA) or polycarbonate (or PC).
- a transparent plastic material such as polymethyl methacrylate (or PMMA) or polycarbonate (or PC).
- the lighting device DE comprises at least one second source S2j arranged so as to generate second photons which define light of a second color, preferably different from the first color.
- this second color can be purple. It can, here, be characteristic of the model of the vehicle or of the make of the vehicle, or even be substantially identical to the (one) color of the bodywork of the vehicle, for example.
- the (each) second source of photons S2j can, for example, comprise at least one light-emitting diode, of conventional type (or LED) or organic type (or OLED), or a laser diode.
- the second source(s) of photons S2j can, for example, be installed on a support plate PS, as illustrated without limitation in the picture 2 .
- This support plate PS can, for example, be a printed circuit board, possibly of the PCB type.
- control means which can, for example, be part at least in part of at least one printed circuit board (not visible on the picture 2 ), possibly the same as that which controls the first source of photons S1.
- the (each) second source S2j is associated with a light guide Gj which comprises first E21j and second E22j opposite ends, here along the longitudinal direction X.
- the first end E21j is supplied with second photons generated by a second associated source S2j.
- the second end E22j is placed close to one of the two opposite ends E1j of the lens L to supply it with second photons which have been guided from the first end E21j of its light guide Gj.
- This power supply is intended to induce in at least part of the lens L internal lighting having the second color.
- This internal lighting can constitute a welcome light which is generated to accommodate a user, here of the vehicle, who has been recognized near his vehicle, for example due to the fact that he is carrying communicating equipment authorized to dialogue at a short distance with this vehicle.
- This equipment can, for example, be an electronic card or vehicle access key comprising near-field communication means, or an intelligent mobile telephone (or “smartphone”) comprising an application making it possible to control access to the vehicle.
- a vehicle computer triggers the operation of each second photon source S2 for a short time (typically a few seconds), to welcome the user by means of a welcome light at the level of the lens L of each lighting device DE.
- the lighting device DE comprises not one but two second sources S2j respectively associated with two light guides Gj.
- the lighting device DE may only include a single second source S2j associated with a single light guide Gj.
- each light guide Gj may comprise a beveled face in order to promote the internal reflection of the second photons in the direction of the end E1j of the lens L which is located nearby.
- each second end face E22j can be beveled at approximately 45°. This option advantageously makes it possible to place each light guide Gj along one of the two lateral sides (j) of the lighting device DE, which promotes the compactness of the latter (DE) in the transverse direction Y.
- each beveled face may comprise a coating or treatment on the side outside.
- the lens L comprises two opposite outer faces Fk and extending between its opposite ends E1j
- at least one of these outer faces Fk can comprise three-dimensional structures scattering some of the second photons outwards in order to induce a halo light effect.
- the upper external face F1 1).
- the two external faces Fk or even only the lower external face F2 can (Fri) t include three-dimensional structures, depending on the needs and the desired effect.
- these three-dimensional structures can be grains defined by a sandblasting operation.
- the lighting device DE can also comprise two side shields CLj each masking one of the opposite ends E1j of the lens L and at least a front part of the light guide Gj which comprises the second end E22j of the latter (Gj ), which supplies this end E1j of the lens L.
- the first side cover CL1 masks the first end E11 of the lens L and at least a front part of the first light guide G1 (and in particular its second end E221), while the second side cover CL2 masks the second end E12 of the lens L.
- the side covers CLj could fully mask the light guides Gj, and not just their front part.
- These side covers CLj may optionally constitute stylized hubcaps.
- these side covers CLj can be made by molding a rigid plastic or synthetic material, such as polyethylene (or PE) or polypropylene (or PP) or even polycarbonate (or PC), optionally treated (for example by metallization).
- a rigid plastic or synthetic material such as polyethylene (or PE) or polypropylene (or PP) or even polycarbonate (or PC), optionally treated (for example by metallization).
- the lighting device DE can also comprise a cover CS masking one of the two external faces Fk of the lens L (here the upper F1), the elements which take part in the photometric function and which are located upstream of the lens L, and a rear part of each light guide Gj comprising the first end E21j of the latter (Gj).
- the cover CS comprises a central part extended on its two sides (j) by lateral wings masking the rear parts of the light guides Gj. This not only makes it possible to mask the elements which take part in the photometric function (apart from the front face FV of the lens L), but also the rear parts of the light guides Gj when they are not already masked by the side covers CLj.
- the side wings of the cowl CS could mask all of the light guides Gj, in the absence of the side covers CLj.
- this cover CS can be made by molding a rigid plastic or synthetic material, such as polyethylene (or PE) or polypropylene (or PP) or even polycarbonate (or PC).
- a rigid plastic or synthetic material such as polyethylene (or PE) or polypropylene (or PP) or even polycarbonate (or PC).
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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)
- Endoscopes (AREA)
Description
L'invention concerne les dispositifs d'éclairage, et plus précisément ceux qui comprennent au moins une source de photons et une lentille participant à la réalisation d'une fonction photométrique.The invention relates to lighting devices, and more precisely those which comprise at least one source of photons and one lens participating in the production of a photometric function.
Dans ce qui suit, on entend par « fonction photométrique » aussi bien une fonction photométrique d'éclairage, qu'une fonction photométrique de signalisation ou qu'une fonction photométrique d'effet lumineux, éventuellement décoratif.In what follows, the term "photometric function" means both a lighting photometric function, a signaling photometric function or a light effect photometric function, possibly decorative.
Dans certains domaines, comme par exemple celui des véhicules, éventuellement de type automobile, on utilise des dispositifs d'éclairage comprenant une source générant des photons et une lentille de forme allongée et agissant sur ces photons pour qu'ils se dirigent vers une partie avant et participent à une fonction photométrique choisie. On notera que de tels dispositifs d'éclairage peuvent faire partie d'un bloc optique assurant éventuellement au moins une autre fonction photométrique.In certain fields, such as for example that of vehicles, possibly of the automotive type, lighting devices are used comprising a source generating photons and an elongated lens and acting on these photons so that they move towards a front part and participate in a chosen photometric function. It will be noted that such lighting devices can be part of an optical unit possibly performing at least one other photometric function.
Dans le cas d'un véhicule, la fonction photométrique du dispositif d'éclairage peut, par exemple, être choisie parmi une fonction de feu de route, une fonction de feu de croisement (ou code), et une fonction de feu antibrouillard. Mais il pourrait également s'agir d'une fonction photométrique de signalisation.In the case of a vehicle, the photometric function of the lighting device can, for example, be chosen from among a main beam function, a dipped beam (or low beam) function, and a fog lamp function. But it could also be a photometric signaling function.
Dans le domaine des véhicules, bien que cela s'applique à tout autre domaine technique, il a été proposé d'accueillir un usager, qui a été reconnu à proximité de son véhicule (par exemple du fait qu'il transporte un équipement communiquant autorisé à dialoguer à faible distance avec ce dernier), au moyen d'une fonction lumineuse d'accueil d'une courte durée. A titre d'exemple, cette fonction lumineuse d'accueil peut consister en un fonctionnement des clignotants ou des feux de stop ou de position (ou veilleuse) pendant quelques secondes.In the field of vehicles, although this applies to any other technical field, it has been proposed to accommodate a user, who has been recognized at proximity to his vehicle (for example due to the fact that he is carrying communicating equipment authorized to dialogue at a short distance with the latter), by means of a short welcome light function. By way of example, this welcome light function may consist of operation of the turn signals or of the stop or position lights (or pilot light) for a few seconds.
Actuellement, dans un véhicule la fonction lumineuse d'accueil n'utilise pas les feux de route ou de croisement, notamment du fait qu'il est interdit de les utiliser en ville et que leur consommation d'électricité est relativement importante et donc pourrait décharger une batterie très faiblement chargée. La fonction lumineuse d'accueil doit donc être réalisée par une autre source que celle de la fonction de feux de route ou de croisement. Il est rappelé qu'actuellement il est interdit par la réglementation d'avoir une source d'accueil de couleur seule. Il faut en effet que lorsque l'on réalise les mesures photométriques la couleur de la lumière d'accueil se noie dans la fonction de feux de route ou de croisement, c'est-à-dire qu'à l'œil on voit la couleur de la lumière d'accueil mais que la mesure optique de cette lumière d'accueil ne soit pas mesurable par l'appareil de mesure.Currently, in a vehicle, the welcome light function does not use the main or dipped beam headlights, in particular because it is forbidden to use them in town and their electricity consumption is relatively high and therefore could discharge a very low battery charge. The welcome light function must therefore be performed by a source other than that of the main beam or dipped beam function. It is recalled that currently it is prohibited by the regulations to have a single color reception source. It is in fact necessary that when the photometric measurements are taken, the color of the welcome light is drowned in the function of main beam or dipped beam, that is to say that the eye can see the welcome light color but that the optical measurement of this welcome light cannot be measured by the measuring device.
Le fait de ne pas utiliser certains dispositifs d'éclairage, comme par exemple ceux qui assurent une fonction de feu de route ou de croisement, empêche de les mettre en valeur lorsqu'ils présentent un design particulier qui participe au style et/ou à la signature des systèmes qu'ils équipent, et donc cela empêche de mettre en valeur leurs systèmes.The fact of not using certain lighting devices, such as those which provide a high beam or dipped beam function, prevents them from being highlighted when they have a particular design which contributes to the style and/or the signature of the systems they equip, and therefore this prevents them from showcasing their systems.
L'invention a donc notamment pour but d'améliorer la situation.The object of the invention is therefore in particular to improve the situation.
Elle propose notamment à cet effet un dispositif d'éclairage comprenant une première source générant des premiers photons définissant une lumière d'une première couleur, et une lentille de forme allongée et agissant sur les premiers photons générés pour qu'ils se dirigent vers une partie avant et participent à une fonction photométrique choisie.It proposes in particular for this purpose a lighting device comprising a first source generating first photons defining a light of a first color, and a lens of elongated shape and acting on the first photons generated so that they move towards a part before and participate in a chosen photometric function.
Ce dispositif d'éclairage se caractérise par le fait qu'il comprend aussi :
- au moins une seconde source générant des seconds photons définissant une lumière d'une seconde couleur, et
- au moins un guide de lumière comprenant une première extrémité alimentée en seconds photons générés, une seconde extrémité, opposée à cette première extrémité et placée au voisinage de l'une de deux extrémités opposées de la lentille pour l'alimenter en seconds photons guidés depuis la première extrémité, afin d'induire dans une partie au moins de la lentille un éclairage interne ayant la seconde couleur.
- at least one second source generating second photons defining light of a second color, and
- at least one light guide comprising a first end supplied with second photons generated, a second end, opposite this first end and placed in the vicinity of one of two opposite ends of the lens in order to supply it with second photons guided from the first end, in order to induce in at least part of the lens an internal illumination having the second color.
L'éclairage de la lentille par l'une au moins de ses extrémités, sans utiliser ou perturber la fonction photométrique, permet avantageusement de mettre en valeur la partie du dispositif d'éclairage qui participe au style et/ou à la signature, et donc peut permettre dans le même temps de mettre en valeur le système qui est équipé de ce dispositif d'éclairage.The lighting of the lens by at least one of its ends, without using or disturbing the photometric function, advantageously makes it possible to highlight the part of the lighting device which contributes to the style and/or to the signature, and therefore can allow at the same time to highlight the system which is equipped with this lighting device.
Le dispositif d'éclairage selon l'invention peut comporter d'autres caractéristiques qui peuvent être prises séparément ou en combinaison, et notamment :
- > les structures tridimensionnelles peuvent être des grains qui ont été définis par une opération de sablage ;
- il peut comprendre deux caches latéraux masquant chacun l'une des extrémités opposées de la lentille et au moins une partie avant du guide de lumière comprenant la seconde extrémité de ce dernier qui alimente cette extrémité de la lentille ;
- il peut comprendre un capot masquant l'une de deux faces externes opposées de la lentille, s'étendant entre les extrémités opposées de cette dernière, des éléments participant à la fonction photométrique et situés en amont de la lentille, et une partie arrière de chaque guide de lumière comprenant la première extrémité de ce dernier ;
- la seconde couleur peut être pourpre ;
- la fonction photométrique peut être choisie parmi une fonction de feu de route et une fonction de feu de croisement (ou code).
- > the three-dimensional structures can be grains which have been defined by a sandblasting operation;
- it may comprise two side shields each masking one of the opposite ends of the lens and at least one front part of the light guide comprising the second end of the latter which supplies this end of the lens;
- it may comprise a cover masking one of two opposite outer faces of the lens, extending between the opposite ends of the latter, elements participating in the photometric function and located upstream of the lens, and a rear part of each light guide comprising the first end of the latter;
- the second color may be purple;
- the photometric function can be chosen from a main beam function and a dipped beam function (or dipped beam).
L'invention propose également un bloc optique de véhicule, éventuellement de type automobile, et comprenant au moins un dispositif d'éclairage du type de celui présenté ci-avant.The invention also proposes a vehicle optical unit, optionally of the automotive type, and comprising at least one lighting device of the type presented above.
L'invention propose également un véhicule, éventuellement de type automobile, et comprenant au moins un dispositif d'éclairage du type de celui présenté ci-avant et/ou au moins un bloc optique du type de celui présenté ci-avant.The invention also proposes a vehicle, optionally of the automobile type, and comprising at least one lighting device of the type of that presented above and/or at least one optical unit of the type of that presented above.
D'autres caractéristiques et avantages de l'invention apparaîtront à l'examen de la description détaillée ci-après, et des dessins annexés (obtenus en CAO/DAO (« Conception Assistée par Ordinateur/Dessin Assisté par Ordinateur »), d'où le caractère apparemment discontinu de certaines lignes), sur lesquels :
- la
figure 1 illustre schématiquement, dans une vue très légèrement en perspective de devant, une partie d'un exemple de bloc optique comprenant un exemple de réalisation d'un dispositif d'éclairage selon l'invention, - la
figure 2 illustre schématiquement, dans une vue en perspective du dessus, le dispositif d'éclairage de lafigure 1 , sans certains de ces éléments optionnels, - la
figure 3 illustre schématiquement, dans une vue en perspective, un exemple de réalisation de la lentille du dispositif d'éclairage desfigures 1 et2 , et - la
figure 4 illustre schématiquement, dans une vue en perspective, le dispositif d'éclairage desfigures 1 et2 , avant la solidarisation de certains de ces éléments optionnels.
- the
figure 1 schematically illustrates, in a very slightly perspective view from the front, part of an example of an optical unit comprising an example embodiment of a lighting device according to the invention, - the
picture 2 schematically illustrates, in a perspective view from above, the lighting device of thefigure 1 , without some of these optional elements, - the
picture 3 schematically illustrates, in a perspective view, an embodiment of the lens of the device for illuminating thefigure 1 and2 , and - the
figure 4 schematically illustrates, in a perspective view, the device for illuminating thefigure 1 and2 , before joining some of these optional elements.
L'invention a notamment pour but de proposer un dispositif d'éclairage DE comprenant une première source de photons S1 et une lentille L participant ensemble à une fonction photométrique choisie, et au moins une seconde source de photons S2 alimentant au moins un guide de lumière Gj chargé d'éclairer cette lentille L.The object of the invention is in particular to propose a lighting device DE comprising a first source of photons S1 and a lens L participating together in a chosen photometric function, and at least one second source of photons S2 supplying at least one light guide Gj responsible for illuminating this lens L.
On considère dans ce qui suit, à titre d'exemple non limitatif, que le dispositif d'éclairage DE est destiné à équiper un bloc optique BO d'un véhicule de type automobile, comme par exemple une voiture. Mais l'invention n'est pas limitée à cette application. En effet, un dispositif d'éclairage DE peut être un équipement en soi (comportant éventuellement son propre boîtier et sa propre glace de protection), ou bien peut faire partie d'un autre équipement qu'un bloc optique de véhicule. Ainsi, un dispositif d'éclairage DE peut faire partie de n'importe quel véhicule (terrestre, maritime (ou fluvial), ou aérien), de n'importe quelle installation, y compris de type industriel, de n'importe quel appareil (ou système), y compris de type grand public, et de n'importe quel bâtiment.It is considered in what follows, by way of non-limiting example, that the lighting device DE is intended to equip an optical unit BO of a vehicle of the automobile type, such as for example a car. But the invention is not limited to this application. Indeed, a lighting device DE can be an item of equipment in itself (possibly comprising its own casing and its own protective glass), or it can be part of equipment other than a vehicle headlight unit. Thus, a DE lighting device can be part of any vehicle (land, sea (or river), or air), any installation, including industrial type, any device ( or system), including consumer type, and any building.
Par ailleurs, on considère dans ce qui suit, à titre d'exemple non limitatif, que le bloc optique BO (comprenant au moins un dispositif d'éclairage DE) est un projecteur (ou phare) avant assurant au moins une fonction photométrique d'éclairage. Mais l'invention n'est pas limitée à cette application. En effet, le dispositif d'éclairage DE, selon l'invention, est un dispositif lumineux pouvant assurer au moins une fonction photométrique d'éclairage ou de signalisation ou d'effet lumineux, éventuellement décoratif, dès lors que cette fonction photométrique nécessite au moins une source de photons et une lentille.Furthermore, it is considered in what follows, by way of non-limiting example, that the optical unit BO (comprising at least one lighting device DE) is a front projector (or headlight) ensuring at least one photometric function of lighting. But the invention is not limited to this application. Indeed, the lighting device DE, according to the invention, is a lighting device capable of providing at least one photometric function of lighting or signaling or of lighting effect, possibly decorative, since this photometric function requires at least a photon source and a lens.
Sur les
On a schématiquement illustré sur la
Le boîtier BB est destiné, ici, à être solidarisé à une partie de la carrosserie d'un véhicule (ici dans une partie avant, comme par exemple une aile avant). Il est réalisé dans un matériau rigide, comme par exemple une matière plastique ou synthétique. Dans ce cas, il peut être réalisé par moulage.The BB box is intended, here, to be secured to a part of the bodywork of a vehicle (here in a front part, such as for example a front wing). It is made of a rigid material, such as for example a plastic or synthetic material. In this case, it can be made by molding.
La glace de protection GP peut, par exemple, être réalisée en verre ou en matière plastique. Elle (GP) est solidarisée fixement à une partie avant du boîtier BB, par exemple par collage, soudage ou vissage. Par ailleurs, elle (GP) peut éventuellement présenter une ou plusieurs couleurs choisies parmi le blanc cristal, le rouge et l'orange.The protective glass GP can, for example, be made of glass or plastic. It (GP) is fixedly secured to a front part of the housing BB, for example by gluing, welding or screwing. Furthermore, it (GP) may optionally have one or more colors chosen from crystal white, red and orange.
Comme illustré (au moins partiellement) sur les
La première source S1 est agencée de manière à générer des premiers photons qui définissent une lumière d'une première couleur (par exemple blanche).The first source S1 is arranged so as to generate first photons which define a light of a first color (for example white).
Cette première source de photons S1 peut, par exemple, comprendre au moins une diode électroluminescente, de type classique (ou LED (« Light-Emitting Diode »)) ou de type organique (ou OLED (« Organic Light-Emitting Diode »)), ou bien une diode laser. Dans l'exemple illustré non limitativement sur la
Le fonctionnement de la première source de photons S1 est contrôlé par des moyens de contrôle qui peuvent, par exemple, faire partie d'au moins une carte à circuits imprimés (non visible sur la
La lentille L présente une forme allongée et deux extrémités opposées E1j (j = 1 ou 2). Ici, j = 1 désigne le côté droit au sein du dispositif d'éclairage DE tandis que j = 2 désigne le côté gauche au sein du dispositif d'éclairage DE. Sa dimension principale (entre ses extrémités opposées E1j) s'étend suivant la direction transversale Y.The lens L has an elongated shape and two opposite ends E1j (j = 1 or 2). Here, j=1 designates the right side within the lighting device DE while j=2 designates the left side within the lighting device DE. Its main dimension (between its opposite ends E1j) extends along the transverse direction Y.
Cette lentille L est agencée de manière à agir sur les premiers photons générés par la première source S1 pour qu'ils se dirigent vers une partie avant et participent à une fonction photométrique choisie. Cette partie avant est située devant la face avant FV de la lentille L, c'est-à-dire la face qui est ici placée en regard de la glace GP et par laquelle sortent les premiers photons sur laquelle la lentille L agit. Dans l'exemple illustré non limitativement sur la
Par ailleurs, cette lentille L peut, par exemple, être réalisée par moulage (éventuellement par injection multicouches) d'une matière plastique transparente telle que le poly-méthacrylate de méthyle (ou PMMA) ou le polycarbonate (ou PC).Furthermore, this lens L can, for example, be made by molding (optionally by multilayer injection) of a transparent plastic material such as polymethyl methacrylate (or PMMA) or polycarbonate (or PC).
Un exemple de réalisation d'une lentille L est schématiquement illustré sur la
Comme indiqué précédemment, le dispositif d'éclairage DE comprend au moins une seconde source S2j agencée de manière à générer des seconds photons qui définissent une lumière d'une seconde couleur, de préférence différente de la première couleur.As indicated previously, the lighting device DE comprises at least one second source S2j arranged so as to generate second photons which define light of a second color, preferably different from the first color.
Par exemple, cette seconde couleur peut être pourpre. Elle peut, ici, être caractéristique du modèle du véhicule ou de la marque du véhicule, ou encore être sensiblement identique à la (une) couleur de la carrosserie du véhicule, par exemple.For example, this second color can be purple. It can, here, be characteristic of the model of the vehicle or of the make of the vehicle, or even be substantially identical to the (one) color of the bodywork of the vehicle, for example.
La (chaque) seconde source de photons S2j peut, par exemple, comprendre au moins une diode électroluminescente, de type classique (ou LED) ou de type organique (ou OLED), ou bien une diode laser.The (each) second source of photons S2j can, for example, comprise at least one light-emitting diode, of conventional type (or LED) or organic type (or OLED), or a laser diode.
La (les) seconde(s) source(s) de photons S2j peu(ven)t, par exemple, être installée(s) sur une plaque de support PS, comme illustré non limitativement sur la
Le fonctionnement de la (chaque) seconde source de photons S2j est contrôlé par des moyens de contrôle qui peuvent, par exemple, faire partie au moins en partie d'au moins une carte à circuits imprimés (non visible sur la
La (chaque) seconde source S2j est associée à un guide de lumière Gj qui comprend des première E21j et seconde E22j extrémités opposées, ici suivant la direction longitudinale X. La première extrémité E21j est alimentée en seconds photons générés par une seconde source S2j associée. La seconde extrémité E22j est placée au voisinage de l'une des deux extrémités opposées E1j de la lentille L pour l'alimenter en seconds photons qui ont été guidés depuis la première extrémité E21j de son guide de lumière Gj. Cette alimentation est destinée à induire dans une partie au moins de la lentille L un éclairage interne ayant la seconde couleur.The (each) second source S2j is associated with a light guide Gj which comprises first E21j and second E22j opposite ends, here along the longitudinal direction X. The first end E21j is supplied with second photons generated by a second associated source S2j. The second end E22j is placed close to one of the two opposite ends E1j of the lens L to supply it with second photons which have been guided from the first end E21j of its light guide Gj. This power supply is intended to induce in at least part of the lens L internal lighting having the second color.
Grâce à cet éclairage interne de la lentille L par l'une au moins de ses extrémités E1j, on peut avantageusement mettre en valeur la partie du dispositif d'éclairage DE qui participe au style et/ou à la signature (ici du bloc optique BO et donc de son véhicule), sans utiliser ou perturber la fonction photométrique à laquelle participe la lentille L. Ainsi, lorsque le dispositif d'éclairage DE fait partie d'un projecteur de véhicule, on peut mettre en valeur par éclairage des éléments du dispositif d'éclairage DE et éventuellement du projecteur, sans faire fonctionner la fonction de feu de route, de croisement ou antibrouillard, ce qui est particulièrement avantageux en ville et sur le plan de la consommation d'électricité. En outre, lorsque le dispositif d'éclairage DE fait partie d'un projecteur de véhicule, cela peut éventuellement permettre de mettre en valeur ce dernier.Thanks to this internal lighting of the lens L by at least one of its ends E1j, it is possible to advantageously highlight the part of the lighting device DE which participates in the style and/or the signature (here of the optical block BO and therefore of its vehicle), without using or disturbing the photometric function in which the lens L participates. Thus, when the lighting device DE is part of a vehicle headlight, it is possible to highlight by lighting elements of the device DE lighting and possibly the headlamp, without operating the main beam, dipped beam or fog lamp function, which is particularly advantageous in town and in terms of electricity consumption. In addition, when the lighting device DE is part of a vehicle headlamp, this may optionally make it possible to highlight the latter.
Cet éclairage interne peut constituer une lumière d'accueil qui est générée pour accueillir un usager, ici du véhicule, qui a été reconnu à proximité de son véhicule, par exemple du fait qu'il transporte un équipement communiquant autorisé à dialoguer à faible distance avec ce véhicule. Cet équipement peut, par exemple, être une carte électronique ou clé d'accès au véhicule comprenant des moyens de communication en champ proche, ou un téléphone mobile intelligent (ou « smartphone ») comprenant une application permettant de contrôler l'accès au véhicule. Dans ce cas, dès que l'usager est reconnu, un calculateur du véhicule déclenche le fonctionnement de chaque seconde source de photons S2 pendant une courte durée (typiquement quelques secondes), pour accueillir l'usager au moyen d'une lumière d'accueil au niveau de la lentille L de chaque dispositif d'éclairage DE.This internal lighting can constitute a welcome light which is generated to accommodate a user, here of the vehicle, who has been recognized near his vehicle, for example due to the fact that he is carrying communicating equipment authorized to dialogue at a short distance with this vehicle. This equipment can, for example, be an electronic card or vehicle access key comprising near-field communication means, or an intelligent mobile telephone (or “smartphone”) comprising an application making it possible to control access to the vehicle. In this case, as soon as the user is recognized, a vehicle computer triggers the operation of each second photon source S2 for a short time (typically a few seconds), to welcome the user by means of a welcome light at the level of the lens L of each lighting device DE.
On notera que dans l'exemple illustré non limitativement sur les
Comme cela apparaît sur la
On notera, comme illustré non limitativement sur la
Par exemple, ces structures tridimensionnelles peuvent être des grains définis par une opération de sablage.For example, these three-dimensional structures can be grains defined by a sandblasting operation.
On notera également, comme illustré non limitativement sur les
Dans une variante de réalisation, les caches latéraux CLj pourraient masquer intégralement les guides de lumière Gj, et pas seulement leur partie avant.In a variant embodiment, the side covers CLj could fully mask the light guides Gj, and not just their front part.
Ces caches latéraux CLj peuvent éventuellement constituer des enjoliveurs stylisés.These side covers CLj may optionally constitute stylized hubcaps.
Par exemple, ces caches latéraux CLj peuvent être réalisés par moulage d'une matière plastique ou synthétique rigide, telle que du polyéthylène (ou PE) ou du polypropylène (ou PP) ou encore du polycarbonate (ou PC), éventuellement traité (par exemple par métallisation).For example, these side covers CLj can be made by molding a rigid plastic or synthetic material, such as polyethylene (or PE) or polypropylene (or PP) or even polycarbonate (or PC), optionally treated (for example by metallization).
Comme cela apparaît sur les
Dans une variante de réalisation, les ailes latérales du capot CS pourraient masquer l'intégralité des guides de lumière Gj, en l'absence des caches latéraux CLj.In a variant embodiment, the side wings of the cowl CS could mask all of the light guides Gj, in the absence of the side covers CLj.
Par exemple, ce capot CS peut être réalisé par moulage d'une matière plastique ou synthétique rigide, telle que du polyéthylène (ou PE) ou du polypropylène (ou PP) ou encore du polycarbonate (ou PC).For example, this cover CS can be made by molding a rigid plastic or synthetic material, such as polyethylene (or PE) or polypropylene (or PP) or even polycarbonate (or PC).
Claims (8)
- An illumination device (DE) comprising a first source (S1) generating first photons defining light of a first color, and a lens (L) of elongated shape and acting on said generated first photons so that they are directed towards a front portion and participate in a selected photometric function, and further comprising i) at least a second source (S2j) generating second photons defining light of a second color and ii) at least one light guide (Gj) comprising a first end (E21j) supplied with generated second photons, a second end (E22j), opposite to said first end (E21j) and placed in the vicinity of one of two opposite ends (E1j) of said lens (L) to supply it with second photons guided from said first end (E21j), so as to induce in at least one portion of said lens (L) an internal illumination having said second color characterized in that it comprises another second source (S2j) generating second photons defining the light having the second color, and ii) another light guide (Gj) comprising a first end (E21j) supplied with second photons generated by this other second source (S2j) a second end (E22j), opposite to said first end (E21j) and placed in the vicinity of the other of said opposite ends (E1j) of the lens (L) for supplying it with second photons guided from said first end (E21j) in order to induce in at least a portion of said lens (L) an internal illumination having said second color, said lens (L) comprising two external faces (Fk) opposite and extending between its opposite ends (E1j), at least one of said external faces (Fk) comprising three-dimensional structures scattering some of said second photons outwardly in order to induce a halo light effect.
- The device of claim 1, wherein said three-dimensional structures are grains defined by a sandblasting operation.
- Device according to one of claims 1 to 2, characterized in that it comprises two lateral covers (CLj) each masking one of said opposite ends (E1j) of the lens (L) and at least a front part of the light guide (Gj) comprising said second end (E22j) of the latter (Gj) feeding this end (E1j) of said lens (L).
- Device according to one of claims 1 to 3, characterized in that it comprises a cover (CS) masking one of two opposite external faces (Fk) of the said lens (L), extending between the said opposite ends (E1j) of the latter (L), elements participating in the said photometric function and situated upstream of the said lens (L), and a rear part of each light guide (Gj) comprising the said first end (E21j) of the latter (Gj).
- A device according to any of claims 1 to 4, characterized in that said second color is purple.
- The device according to any of claims 1 to 5, characterized in that said photometric function is selected from a high beam function and a low beam function.
- A vehicle optical unit (BO), characterized in that it comprises at least one lighting device (DE) according to one of the preceding claims.
- Vehicle, characterized in that it comprises at least one optical unit (BO) according to claim 7.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR1856315A FR3083844B1 (en) | 2018-07-10 | 2018-07-10 | LENS LIGHTING DEVICE LIT BY A RECEPTION LIGHT |
Publications (2)
Publication Number | Publication Date |
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EP3594563A1 EP3594563A1 (en) | 2020-01-15 |
EP3594563B1 true EP3594563B1 (en) | 2022-05-18 |
Family
ID=63442681
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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EP19179336.3A Active EP3594563B1 (en) | 2018-07-10 | 2019-06-11 | Lighting device with lens illuminated by a host light |
Country Status (3)
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EP (1) | EP3594563B1 (en) |
CN (1) | CN110701569B (en) |
FR (1) | FR3083844B1 (en) |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2819040B1 (en) * | 2001-01-02 | 2003-09-12 | Valeo Vision | OPTICAL OR STYLE COMPONENT FOR A LIGHTING OR SIGNALING DEVICE FOR A MOTOR VEHICLE |
JP5846813B2 (en) * | 2011-09-07 | 2016-01-20 | 株式会社小糸製作所 | Vehicle lighting |
JP6131571B2 (en) * | 2012-11-13 | 2017-05-24 | 市光工業株式会社 | Vehicle lighting |
JP6478204B2 (en) * | 2014-02-03 | 2019-03-06 | パナソニックIpマネジメント株式会社 | LIGHTING DEVICE AND AUTOMOBILE HAVING LIGHTING DEVICE |
JP6408595B2 (en) * | 2014-09-30 | 2018-10-17 | マクセル株式会社 | Vehicle lighting |
JP6636244B2 (en) * | 2014-12-04 | 2020-01-29 | 株式会社小糸製作所 | Road surface lighting unit |
DE102015213552A1 (en) * | 2015-07-17 | 2017-01-19 | Automotive Lighting Reutlingen Gmbh | Light module for a motor vehicle headlight with a laser light source |
US9925912B2 (en) * | 2015-12-07 | 2018-03-27 | GM Global Technology Operations LLC | Exterior lighting and object detection assembly |
-
2018
- 2018-07-10 FR FR1856315A patent/FR3083844B1/en not_active Expired - Fee Related
-
2019
- 2019-06-11 EP EP19179336.3A patent/EP3594563B1/en active Active
- 2019-07-10 CN CN201910621275.XA patent/CN110701569B/en active Active
Also Published As
Publication number | Publication date |
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FR3083844B1 (en) | 2021-06-04 |
CN110701569A (en) | 2020-01-17 |
EP3594563A1 (en) | 2020-01-15 |
CN110701569B (en) | 2023-03-10 |
FR3083844A1 (en) | 2020-01-17 |
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