EP0549423A1 - Lens for signalling optical device equipped with pseudo-catadioptric elements - Google Patents
Lens for signalling optical device equipped with pseudo-catadioptric elements Download PDFInfo
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- EP0549423A1 EP0549423A1 EP92403444A EP92403444A EP0549423A1 EP 0549423 A1 EP0549423 A1 EP 0549423A1 EP 92403444 A EP92403444 A EP 92403444A EP 92403444 A EP92403444 A EP 92403444A EP 0549423 A1 EP0549423 A1 EP 0549423A1
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- Prior art keywords
- pseudo
- catadioptric
- elements
- light
- glass
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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
- F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
- F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
- F21S43/26—Refractors, transparent cover plates, light guides or filters not provided in groups F21S43/235 - F21S43/255
Definitions
- the present invention relates generally to signaling lights, in particular for motor vehicles, of which a window (or globe or even indicator) is equipped with pseudo-catadioptric elements and if necessary catadioptric elements.
- the term "pseudo-reflector” or “pseudo-retro-reflective element” means an optical element which has an aspect close to that of a true reflector, without having the function of retro-reflection.
- a conventional catadioptric element or "needle” 10 formed, for example in a traffic light glass, consists of an essentially planar face of light entry and exit, situated on the side outside of the glass, and of three flat surfaces 14a-14c arranged in a tri-rectangle trihedron, located on the inside of the glass and intended to retro-reflect, by total reflection on each of the faces, the incident light oriented in a direction close to the longitudinal axis of the element.
- the angle ⁇ defined by the faces of the trihedron two by two is equal to 90 °, and these faces tangent a cone whose half-angle at the apex ⁇ is equal to 35 ° 15 ' .
- a well-known pseudo-catadioptric element 20 is shown in FIG. 2.
- the faces 24a-24c of the trihedron form an angle ⁇ ′ different from 90 °, and for example of the order of 92 °, and the half-angle at the top ⁇ 'is worth for example 36 ° 25', so that the retro-reflection function is no longer ensured, while the element retains, when the fire is extinguished, an appearance completely similar to that of a real catadioptric element.
- Another known solution for producing a pseudo-reflector consists in retaining the geometry of the retro-reflecting element of FIG. 1, by etching the faces 14a-14c to remove the total reflection thereon.
- the pseudo-catadioptric elements described above have the drawback of not letting the light emitted from inside the light pass, the latter therefore not being able to participate in the signaling beam to be formed.
- FIG. 3 A known solution to this problem of loss of light is shown in FIG. 3. It consists in providing, on the inside of the glass G of the light, an intermediate screen E which comprises lenses L or the like intended to concentrate the majority of the light coming from the source or from a reflector in the direction of zones 30 of the ice which are not treated as pseudo-reflectors, and which are capable of letting the light pass.
- an intermediate screen E which comprises lenses L or the like intended to concentrate the majority of the light coming from the source or from a reflector in the direction of zones 30 of the ice which are not treated as pseudo-reflectors, and which are capable of letting the light pass.
- the first object of the present invention is to provide a lens comprising pseudo-catadioptric elements which are extremely simple and economical to produce.
- a lens for at least one signaling light in particular for a motor vehicle, characterized in that it comprises, in at least one zone, a plurality of pseudo-catadioptric elements each having on the inside of the glass a conical end.
- the apex angle of at least one group of pseudo-catadioptric elements is between approximately 110 and 165 °, preferably between 130 and 150 °, these elements allow the incident light to pass through said inner side of ice.
- the angle at the apex of at least one group of pseudo-catadioptric elements is less than about 110 °, these elements at least partly obscure the light incident on said inner side of the glass.
- the orientation of the axes of the conical ends can be varied from one pseudo-catadioptric element to another.
- At least one group of pseudo-catadioptric elements is arranged in an elongated strip comprising one or more rows of said elements.
- the lens comprises a plurality of elongated parallel pseudo-catadioptric bands each comprising one or more rows of pseudo-catadioptric elements alternating with a plurality of elongated bands for processing a light beam.
- said elongated strips for processing a light beam each advantageously comprise a plurality of light scattering elements, and these elements preferably have an identical pitch or an integral multiple of a pitch of the pseudo-catadioptric elements said bands.
- each conical end of a retro-reflecting element may be provided on a rib extending from the inside of the glass over at least part of the width of each pseudo-retro-reflecting strip.
- this lens may comprise side by side at least a first region having a plurality of pseudo-catadioptric bands alternating with a plurality of elongated bands of treatment of a light beam and a second region having a plurality of retro-reflecting strips each comprising one or more rows of retro-reflecting elements and situated in alignment with said pseudo-retro-reflecting strips, alternating with a plurality of elongated treatment strips a light beam to emit.
- the invention also relates to a signaling device for a motor vehicle, incorporating at least one signaling function, characterized in that it comprises a window as defined above.
- a pseudo-catadioptric zone of a signal light lens G which comprises a set of pseudo-catadioptric elements 20 of hexagonal contours (these contours not being materialized in practice , the glass being in one piece) and whose geometric arrangement is that of a honeycomb.
- the bottom face of each element, on the inside of the glass is defined by a cone, designated by the reference 26.
- a pseudo-catadioptric element according to the invention proves to be extremely easy and economical to produce, since it suffices to form in the mold which will be used to make the blind hole glass with a drill with a conical top, in the appropriate locations.
- Another advantage of the invention lies in the fact that a cadiatopter thus defined, by an appropriate choice of the angle at the top of the cone, can allow light to pass through. More precisely, a satisfactory passage of light is obtained for an apex angle of between approximately 110 and 165 °, preferably between approximately 130 and 150 °.
- the orientation of the axis of each cone of pseudo-catadioptric element can be modified in order to effect a horizontal and / or vertical distribution of the light coming from the source in the light beam, thanks to the induced variation of the orientation of the refracted rays.
- pseudo-catadioptric elements which let in little or no light.
- vertex angles between about 70 ° and 110 ° are chosen for the cones; the light is almost completely obscured for apex angles less than or equal to about 78 °.
- FIGs 6 and 7 partially illustrate a closing glass organized in relatively narrow bands alternately comprising pseudo-catadioptric elements (zones Z1) and elements for diffusing the light emitted by the source, or in certain cases without optical role, for example with parallel faces (zones Z2).
- each strip Z1 comprises two horizontal rows of pseudo-catadioptric elements 20 arranged in staggered rows.
- the strips Z2 comprise toric elements 50, that is to say cylindrical ridges of curved vertical profile, allowing the diffusion of the light emitted by the source horizontally and vertically.
- each diffusion toroid 50 has a width equal to the width of an individual pseudo-catadioptric element.
- the angle at the top of the cones is approximately 120 °, that is to say that they allow a very large proportion of the light received from the source to pass through, also performing a dispersion of it.
- the outer face of the glass G is smooth to comply with the regulations.
- diffusion elements 50 can take any suitable form such as cylindrical, toric, spherical, prismatic, etc.
- FIGS 8 and 9 illustrate another concrete embodiment of the invention.
- zones Z1 with pseudo-catadioptric elements and zones Z2 for light scattering.
- Each zone in strip Z1 comprises a single row of pseudo-catadioptric elements 20 whose individual (intangible) contours are generally rectangular.
- the elements 50 are again toroids, and have a width twice the width of the individual pseudo-catadioptric elements.
- the width of the Z1 bands is slightly less than that of the Z2 bands.
- the pitch of the diffusion elements 50 along the length of the strips alternating either identical or an integer multiple of the step of the pseudo-catadioptric elements.
- FIG. 10 shows part of a window G of a block of rear vehicle signaling lights which comprises several regions R1 to R5 assigned for example to the following five light functions, respectively: reversing light, flashing light, rear fog light, position light and brake light.
- suitable light sources in combination where appropriate with reflectors or lenses, are provided in association with each region.
- the regions R1, R2, R3 and R5 are produced in the spirit of FIGS. 6 to 9, with Z1 bands constituted by pseudo-catadioptric elements 20 according to the invention alternating with Z2 bands composed of diffusion elements 50 light.
- the region R4 corresponding to the position light comprises bands Z3 composed of true retro-reflecting elements 10, alternating with bands Z2 comprising elements 50 for scattering light.
- the zones Z2 of the three regions R3 to R5 preferably all have the same width (which may also be the case of the zones Z2 of the regions R1 and R2), while the zones Z1 and Z3 also all have the same width. This gives a great homogeneity of appearance to the glass G in particular in its lower part, the zones Z3 of true retro-reflectors having practically the same appearance, when all the light functions are off, as the zones Z1 of pseudo-retro-reflectors.
- the production of a mold part intended for manufacturing an ice cream according to the invention in series calls for the production of blind holes with a conical bottom for the pseudo-catadioptric elements.
- a groove of rectangular section is made beforehand at the bottom of which the conical bottoms will then be made .
- the presence of such a groove makes it possible to avoid direct intersections between the cones of the pseudo-catadioptric elements and the neighboring toric elements, which could cause it to be impossible to demold in highly inclined parts of the ice.
- FIG. 8 in particular shows the straight lines D of transition between the zones Z1 and Z2, which correspond to the edges of the groove
- FIG. 9 shows the ribs of rectangular section N corresponding to the grooves of the mold.
- the same lens produced according to the invention may include pseudo-catadioptric elements of different designs in terms of angles at the top of the cones and of orientation of these cones. This is how certain pseudo-catadioptric elements allowing light to pass can coexist with other pseudo-catadioptric elements not allowing light to pass through.
Abstract
Description
La présente invention concerne d'une façon générale les feux de signalisation, notamment pour véhicules automobile, dont une glace (ou globe ou encore voyant) est équipé d'éléments pseudo-catadioptriques et le cas échéant d'éléments catadioptriques.The present invention relates generally to signaling lights, in particular for motor vehicles, of which a window (or globe or even indicator) is equipped with pseudo-catadioptric elements and if necessary catadioptric elements.
Dans toute la description qui suit, on entend par "pseudo-catadioptre" ou "élément pseudo-catadioptrique" un élément optique qui présente un aspect voisin de celui d'un véritable catadioptre, sans en posséder la fonction de rétro-réflexion.Throughout the description which follows, the term "pseudo-reflector" or "pseudo-retro-reflective element" means an optical element which has an aspect close to that of a true reflector, without having the function of retro-reflection.
En référence tout d'abord à la figure 1, un élément ou "aiguille" catadioptrique classique 10 formé par exemple dans une glace de feu de signalisation se compose d'une face essentiellement plane d'entrée et de sortie de lumière, située du côté extérieur de la glace, et de trois surfaces planes 14a-14c disposées selon un trièdre tri-rectangle, situées du côté intérieur de la glace et destinées à rétro-réfléchir, par réflexion totale sur chacune des faces, la lumière incidente orientée selon une direction proche de l'axe longitudinal de l'élément.Referring firstly to FIG. 1, a conventional catadioptric element or "needle" 10 formed, for example in a traffic light glass, consists of an essentially planar face of light entry and exit, situated on the side outside of the glass, and of three flat surfaces 14a-14c arranged in a tri-rectangle trihedron, located on the inside of the glass and intended to retro-reflect, by total reflection on each of the faces, the incident light oriented in a direction close to the longitudinal axis of the element.
Pour que cette rétro-réflexion soit convenablement réalisée, l'angle α défini par les faces du trièdre deux à deux est égal à 90°, et ces faces tangentent un cône dont le demi-angle au sommet β est égal à 35°15'.So that this retro-reflection is properly carried out, the angle α defined by the faces of the trihedron two by two is equal to 90 °, and these faces tangent a cone whose half-angle at the apex β is equal to 35 ° 15 ' .
Un élément pseudo-catadioprique bien connu 20 est représenté sur la figure 2. Les faces 24a-24c du trièdre font entre elles un angle α' différent de 90°, et par exemple de l'ordre de 92°, et le demi-angle au sommet β' vaut par exemple 36°25', si bien que la fonction de rétro-réflexion n'est plus assurée, tandis que l'élément conserve, lorsque le feu est éteint, un aspect tout à fait semblable à celui d'un élément catadioptrique véritable.A well-known
Une autre solution connue pour réaliser un pseudo-catadioptre consiste à conserver la géométrie de l'élément catadioptrique de la figure 1, en effectuant un dépolissage des faces 14a-14c pour supprimer la réflexion totale sur celles-ci.Another known solution for producing a pseudo-reflector consists in retaining the geometry of the retro-reflecting element of FIG. 1, by etching the faces 14a-14c to remove the total reflection thereon.
Ces deux solutions connues présentent un premier inconvénient, selon lequel les éléments pseudo-catadioptriques sont au moins aussi longs et coûteux à réaliser que des éléments catadioptriques, alors qu'ils n'ont aucune fonction optique à remplir.These two known solutions have a first drawback, according to which the pseudo-retro-reflecting elements are at least as long and costly to produce as retro-reflecting elements, while they have no optical function to fulfill.
Par ailleurs, les éléments pseudo-catadioptriques décrits ci-dessus ont pour inconvénient de ne pas laisser passer la lumière émise depuis l'intérieur du feu, celle-ci ne pouvant donc pas participer au faisceau de signalisation à former.Furthermore, the pseudo-catadioptric elements described above have the drawback of not letting the light emitted from inside the light pass, the latter therefore not being able to participate in the signaling beam to be formed.
Une solution connue à ce problème de perte de lumière est représentée sur la figure 3. Elle consiste à prévoir, du côté intérieur de la glace G du feu, un écran intermédiaire E qui comprend des lentilles L ou analogues destinées à concentrer la majorité de la lumière issue de la source ou d'un réflecteur en direction de zones 30 de la glace qui ne sont pas traitées en pseudo-catadioptres, et qui sont aptes à laisser passer la lumière.A known solution to this problem of loss of light is shown in FIG. 3. It consists in providing, on the inside of the glass G of the light, an intermediate screen E which comprises lenses L or the like intended to concentrate the majority of the light coming from the source or from a reflector in the direction of
Cette solution connue est là encore désavantageuse en ce qu'elle occasionne un surcoût du feu, et en ce qu'il devient plus difficile de satisfaire aux règlements en matière de photométrie.This known solution is again disadvantageous in that it causes an additional cost of the fire, and in that it becomes more difficult to meet the regulations in terms of photometry.
La présente invention a pour premier objet de proposer une glace comportant des éléments pseudo-catadioptriques qui soient extrêmement simples et économiques à réaliser.The first object of the present invention is to provide a lens comprising pseudo-catadioptric elements which are extremely simple and economical to produce.
Elle concerne à cet effet une glace pour au moins un feu de signalisation, notamment pour véhicule automobile, caractérisée en ce qu'elle comprend, dans au moins une zone, une pluralité d'éléments pseudo-catadioptriques présentant chacun du côté intérieur de la glace une extrémité conique.To this end, it relates to a lens for at least one signaling light, in particular for a motor vehicle, characterized in that it comprises, in at least one zone, a plurality of pseudo-catadioptric elements each having on the inside of the glass a conical end.
Dans le cas où l'angle au sommet d'au moins un groupe d'éléments pseudo-catadioptriques est compris entre environ 110 et 165°, de préférence entre 130 et 150°, ces éléments laissent passer la lumière incidente sur ledit côté intérieur de la glace.In the case where the apex angle of at least one group of pseudo-catadioptric elements is between approximately 110 and 165 °, preferably between 130 and 150 °, these elements allow the incident light to pass through said inner side of ice.
Au contraire, si l'angle au sommet d'au moins un groupe d'éléments pseudo-catadioptriques est inférieur à environ 110°, ces éléments occultent au moins en partie la lumière incidente sur ledit côté intérieur de la glace.On the contrary, if the angle at the apex of at least one group of pseudo-catadioptric elements is less than about 110 °, these elements at least partly obscure the light incident on said inner side of the glass.
En vue d'ajuster la diffusion de la lumière traversant des éléments pseudo-catadioptriques passants, on peut faire varier l'orientation des axes des extrémités coniques d'un élément pseudo-catadioptrique à un autre.In order to adjust the scattering of light passing through passing pseudo-catadioptric elements, the orientation of the axes of the conical ends can be varied from one pseudo-catadioptric element to another.
De façon préférée, au moins un groupe d'éléments pseudo-catadioptriques est disposé en une bande allongée comportant une ou plusieurs rangées desdits éléments. Et plus préférentiellement, la glace comprend une pluralité de bandes parallèles allongées pseudo-catadioptriques comportant chacune une ou plusieurs rangées d'éléments pseudo-catadioptriques en alternance avec une pluralité de bandes allongées de traitement d'un faisceau lumineux.Preferably, at least one group of pseudo-catadioptric elements is arranged in an elongated strip comprising one or more rows of said elements. And more preferably, the lens comprises a plurality of elongated parallel pseudo-catadioptric bands each comprising one or more rows of pseudo-catadioptric elements alternating with a plurality of elongated bands for processing a light beam.
Dans ce cas, lesdites bandes allongées de traitement d'un faisceau lumineux comportent chacune avantageusement une pluralité d'éléments de diffusion de la lumière, et ces éléments présentent de préférence un pas identique ou ou multiple entier d'un pas des éléments pseudo-catadioptriques desdites bandes.In this case, said elongated strips for processing a light beam each advantageously comprise a plurality of light scattering elements, and these elements preferably have an identical pitch or an integral multiple of a pitch of the pseudo-catadioptric elements said bands.
Par ailleurs, chaque extrémité conique d'un élément catadioptrique peut être prévue sur une nervure s'étendant du côté intérieur de la glace sur au moins une partie de la largeur de chaque bande pseudo-catadioptrique.Furthermore, each conical end of a retro-reflecting element may be provided on a rib extending from the inside of the glass over at least part of the width of each pseudo-retro-reflecting strip.
En particulier dans le cas d'une glace pour un bloc optique incorporant différentes fonctions de signalisation, cette glace peut comporter côte-à-côte au moins une première région présentant une pluralité de bandes pseudo-catadioptriques en alternance avec une pluralité de bandes allongées de traitement d'un faisceau lumineux et une deuxième région présentant une pluralité de bandes catadioptriques comportant chacune une ou plusieurs rangées d'éléments catadioptriques et situées dans l'alignement desdites bandes pseudo-catadioptriques, en alternance avec une pluralité de bandes allongées de traitement d'un faisceau lumineux à émettre.In particular in the case of a lens for an optical unit incorporating different signaling functions, this lens may comprise side by side at least a first region having a plurality of pseudo-catadioptric bands alternating with a plurality of elongated bands of treatment of a light beam and a second region having a plurality of retro-reflecting strips each comprising one or more rows of retro-reflecting elements and situated in alignment with said pseudo-retro-reflecting strips, alternating with a plurality of elongated treatment strips a light beam to emit.
L'invention concerne également un dispositif de signalisation pour véhicule automobile, incorporant au moins une fonction de signalisation, caractérisé en ce qu'il comprend une glace telle que définie ci-dessus.The invention also relates to a signaling device for a motor vehicle, incorporating at least one signaling function, characterized in that it comprises a window as defined above.
D'autres aspects, buts et avantages de la présente invention apparaîtront mieux à la lecture de la description détaillée suivante d'une forme de réalisation préférée de celle-ci, donnée à titre d'exemple non limitatif et faite en référence aux dessins annexés, sur lesquels :
- la figure 1 est une vue schématique en élévation d'un élément catadioptrique classique,
- la figure 2 est une vue schématique en élévation d'un élément pseudo-cadatrodiptrique classique,
- la figure 3 est une vue en coupe schématique à travers une glace et un écran intermédiaire de la technique antérieure,
- la figure 4 est une vue de face d'un ensemble de pseudo-catadioptres selon la présente invention,
- la figure 5 est est une vue en coupe selon la ligne V-V de la figure 4,
- la figure 6 est une vue de face partielle d'une première forme de réalisation d'une glace équipée de zones pseudo-catadioptriques selon l'invention,
- la figure 7 est une vue en coupe selon la ligne VII-VII de la figure 6,
- la figure 8 est une vue de face partielle d'une deuxième forme de réalisation d'une glace équipée de zones pseudo-catadioptriques selon l'invention,
- la figure 9 est une vue en coupe selon la ligne IX-IX de la figure 8, et
- la figure 10 est une vue de face partielle d'une glace équipée de zones catadioptriques dans certaines régions et de zones pseudo-catadioptriques dans d'autres régions.
- FIG. 1 is a diagrammatic elevation view of a conventional retro-reflecting element,
- FIG. 2 is a schematic elevation view of a conventional pseudo-cadatrodiptric element,
- FIG. 3 is a schematic sectional view through a glass and an intermediate screen of the prior art,
- FIG. 4 is a front view of a set of pseudo-reflectors according to the present invention,
- FIG. 5 is a sectional view along the line VV of FIG. 4,
- FIG. 6 is a partial front view of a first embodiment of a lens fitted with pseudo-catadioptric zones according to the invention,
- FIG. 7 is a sectional view along the line VII-VII of FIG. 6,
- FIG. 8 is a partial front view of a second embodiment of a lens fitted with pseudo-catadioptric zones according to the invention,
- FIG. 9 is a sectional view along the line IX-IX of FIG. 8, and
- FIG. 10 is a partial front view of a window fitted with retro-reflecting zones in certain regions and pseudo-retro-reflecting zones in other regions.
On notera préliminairement que, d'une figure à l'autre, des éléments ou parties identiques ou similaires ont été désignés par les mêmes signes de référence.It will be noted at the outset that, from one figure to another, identical or similar elements or parts have been designated by the same reference signs.
En référence aux figures 4 et 5, on a représenté une zone pseudo-catadioptrique d'une glace G de feu de signalisation qui comprend un ensemble d'éléments pseudo-catadioptriques 20 de contours hexagonaux (ces contours n'étant pas matérialisés dans la pratique, la glace étant monobloc) et dont la disposition géométrique est celle d'un nid d'abeille.Referring to Figures 4 and 5, there is shown a pseudo-catadioptric zone of a signal light lens G which comprises a set of
Selon un aspect essentiel de l'invention, la face de fond de chaque élément, du côté intérieur de la glace, est définie par un cône, désigné par la référence 26. Dans un mode de réalisation de base, l'axe du cône s'étend selon la direction londitudinale de l'élément 20, avantageusement parallèle à la direction longitudinale du véhicule.According to an essential aspect of the invention, the bottom face of each element, on the inside of the glass, is defined by a cone, designated by the
On a constaté de façon inattendue qu'un tel cône, bien qu'il présente une géométrie bien différente d'un trièdre, donnait à l'élément lorsque le feu est éteint un aspect tout à fait similaire à celui d'un élément catadioptrique véritable.It was unexpectedly found that such a cone, although it has a geometry very different from a trihedron, gave the element when the fire is extinguished an appearance quite similar to that of a true retro-reflecting element .
En outre, un élément pseudo-catadioptrique selon l'invention s'avère extrêmement facile et économique à réaliser, car il suffit de former dans le moule qui servira à réaliser la glace des perçages borgnes avec un foret à sommet conique, aux emplacements appropriés.In addition, a pseudo-catadioptric element according to the invention proves to be extremely easy and economical to produce, since it suffices to form in the mold which will be used to make the blind hole glass with a drill with a conical top, in the appropriate locations.
Un autre avantage de l'invention réside en ce qu'un cadatioptre ainsi défini, par un choix approprié de l'angle au sommet du cône, peut laisser passer la lumière. plus précisément, un passage satisfaisant de la lumière est obtenu pour un angle au sommet compris entre environ 110 et 165°, de préférence entre environ 130 et 150°.Another advantage of the invention lies in the fact that a cadiatopter thus defined, by an appropriate choice of the angle at the top of the cone, can allow light to pass through. more precisely, a satisfactory passage of light is obtained for an apex angle of between approximately 110 and 165 °, preferably between approximately 130 and 150 °.
En outre, selon un aspect avantageux de l'invention, on peut modifier l'orientation de l'axe de chaque cône d'élément pseudo-catadioptrique afin d'effectuer une répartition horizontale et/ou verticale de la lumière issue de la source dans le faisceau lumineux, grâce à la variation induite de l'orientation des rayons réfractés.In addition, according to an advantageous aspect of the invention, the orientation of the axis of each cone of pseudo-catadioptric element can be modified in order to effect a horizontal and / or vertical distribution of the light coming from the source in the light beam, thanks to the induced variation of the orientation of the refracted rays.
Bien entendu, on peut dans certains cas utiliser des éléments pseudo-catadioptriques selon l'invention qui ne laissent passer que peu de lumière ou aucune lumière. Dans ce cas, on choisit pour les cônes des angles au sommet compris entre environ 70° et 110°; la lumière est occultée pratiquement en totalité pour des angles au sommet inférieurs ou égaux à environ 78°.Of course, it is possible in certain cases to use pseudo-catadioptric elements according to the invention which let in little or no light. In this case, vertex angles between about 70 ° and 110 ° are chosen for the cones; the light is almost completely obscured for apex angles less than or equal to about 78 °.
Plus généralement, un choix appropriée de l'angle au sommet des cônes des éléments pseudo-catadioptriques, ou encore l'utilisation dans une même glace d'éléments pseudo-catadioptriques dont les angles au sommet ont des valeurs différentes, permettent le cas échéant de "travailler" la photométrie d'un faisceau formé en intervenant sur les rayons incidents sur les régions pseudo-catadioptriques.More generally, an appropriate choice of the angle at the top of the cones of the pseudo-catadioptric elements, or even the use in the same lens of pseudo-catadioptric elements whose apex angles have different values, make it possible, if necessary "work" the photometry of a beam formed by intervening on the incident rays on the pseudo-catadioptric regions.
Les figures 6 et 7 illustrent partiellement une glace de fermeture organisée en des bandes relativement étroites comportant alternativement des éléments pseudo-catadioptriques (zones Z1) et des éléments de diffusion de la lumière émise par la source, ou dans certains cas sans rôle optique, par exemple à faces parallèles (zones Z2).Figures 6 and 7 partially illustrate a closing glass organized in relatively narrow bands alternately comprising pseudo-catadioptric elements (zones Z1) and elements for diffusing the light emitted by the source, or in certain cases without optical role, for example with parallel faces (zones Z2).
Dans le présent exemple, chaque bande Z1 comporte deux rangées horizontales d'éléments pseudo-catadioptriques 20 disposés en quinconce. Les bandes Z2 comportent des éléments toriques 50, c'est-à-dire des stries cylindriques de profil vertical courbe, permettant la diffusion de la lumière émise par la source horizontalement et verticalement.In the present example, each strip Z1 comprises two horizontal rows of
En outre, on observe sur la figure 6 que les bandes Z1 et Z2 ont approximativement la même largeur, et que chaque tore de diffusion 50 présente une largeur égale à la largeur d'un élément pseudo-catadioptrique individuel. On observe en outre sur la figure 7 que l'angle au sommet des cônes est d'environ 120°, c'est-à-dire qu'ils laissent passer une proportion très importante de la lumière reçue de la source, en effectuant également une dispersion de celle-ci.In addition, it can be seen in FIG. 6 that the bands Z1 and Z2 have approximately the same width, and that each
La face extérieure de la glace G est lisse pour satisfaire aux règlements.The outer face of the glass G is smooth to comply with the regulations.
On notera que les éléments 50 de diffusion peuvent prendre toute forme appropriée telle que cylindrique, torique, sphérique, prismatique, etc...It will be noted that the
Les figures 8 et 9 illustrent un autre exemple de réalisation concrète de l'invention. On trouve là encore des zones Z1 à éléments pseudo-catadioptriques et des zones Z2 de diffusion de la lumière. Chaque zone en bande Z1 comporte une rangée unique d'éléments pseudo-catadioptriques 20 dont les contours (immatériels) individuels sont généralement rectangulaires. Les éléments 50 sont à nouveau des tores, et ont une largeur double de la largeur des éléments pseudo-catadioptriques individuels. Enfin on observe que la largeur des bandes Z1 est légèrement inférieure à celle des bandes Z2.Figures 8 and 9 illustrate another concrete embodiment of the invention. Here again there are zones Z1 with pseudo-catadioptric elements and zones Z2 for light scattering. Each zone in strip Z1 comprises a single row of
D'une façon générale, on préfère que le pas des éléments de diffusion 50 suivant la longueur des bandes alternées soit identique ou soit un multiple entier du pas des éléments pseudo-catadioptriques.In general, it is preferred that the pitch of the
On a représenté sur la figure 10 une partie d'une glace G d'un bloc de feux de signalisation arrière de véhicule qui comporte plusieurs régions R1 à R5 affectées par exemple aux cinq fonctions lumineuses suivantes, respectivement : feu de recul, feu clignotant, feu anti-brouillard arrière, feu de position et feu stop. Bien entendu, des sources lumineuses appropriées, en combinaison le cas échéant avec des réflecteurs ou des lentilles, sont prévues en association avec chaque région.FIG. 10 shows part of a window G of a block of rear vehicle signaling lights which comprises several regions R1 to R5 assigned for example to the following five light functions, respectively: reversing light, flashing light, rear fog light, position light and brake light. Of course, suitable light sources, in combination where appropriate with reflectors or lenses, are provided in association with each region.
Les régions R1, R2, R3 et R5 sont réalisées dans l'esprit des figures 6 à 9, avec des bandes Z1 constituées par des éléments pseudo-catadioptriques 20 selon l'invention en alternance avec des bandes Z2 composées d'éléments 50 de diffusion de la lumière.The regions R1, R2, R3 and R5 are produced in the spirit of FIGS. 6 to 9, with Z1 bands constituted by
La région R4 correspondant au feu de position comporte quant à elle des bandes Z3 composées d'éléments catadioptriques véritables 10, en alternance avec des bandes Z2 comportant des éléménts 50 de diffusion de la lumière.The region R4 corresponding to the position light comprises bands Z3 composed of true retro-reflecting
Les zones Z2 des trois régions R3 à R5 ont de préférence toutes une même largeur (ce qui peut être également le cas des zones Z2 des régions R1 et R2), tandis que les zones Z1 et Z3 ont également toutes une même largeur. On donne de cette manière une grande homogénéité d'aspect à la glace G notamment dans sa partie inférieure, les zones Z3 de vrais catadioptres ayant pratiquement la même apparence, lorsque toutes les fonctions lumineuses sont éteintes, que les zones Z1 de pseudo-catadioptres.The zones Z2 of the three regions R3 to R5 preferably all have the same width (which may also be the case of the zones Z2 of the regions R1 and R2), while the zones Z1 and Z3 also all have the same width. This gives a great homogeneity of appearance to the glass G in particular in its lower part, the zones Z3 of true retro-reflectors having practically the same appearance, when all the light functions are off, as the zones Z1 of pseudo-retro-reflectors.
Comme on l'a indiqué plus haut, la réalisation d'une partie de moule destinée à fabriquer une glace selon l'invention en série fait appel à la réalisation de trous borgnes à fond conique pour les éléments pseudo-catadioptriques. Cela étant, afin d'obtenir une transition aussi nette et régulière que possible entre les zones Z1 de pseudo-catadioptres et les zones avoisinantes Z2, on réalise préalablement dans le moule une rainure de section rectangulaire au fond de laquelle seront pratiqués ensuite les fonds coniques. En outre, la présence de telles rainure permet d'éviter des intersections directes entre les cônes des éléments pseudo-catadioptriques et les éléments toriques voisins, qui pourraient provoquer une impossibilité de démoulage dans des parties fortement inclinées de la glace. La figure 8 en particulier montre les lignes droites D de transition entre les zones Z1 et Z2, qui correspondent aux bords de la rainure, et la figure 9 montre les nervures de section rectangulaire N correspondant aux rainures du moule.As indicated above, the production of a mold part intended for manufacturing an ice cream according to the invention in series calls for the production of blind holes with a conical bottom for the pseudo-catadioptric elements. This being so, in order to obtain a transition as clear and regular as possible between the zones Z1 of pseudo-reflectors and the neighboring zones Z2, a groove of rectangular section is made beforehand at the bottom of which the conical bottoms will then be made . In addition, the presence of such a groove makes it possible to avoid direct intersections between the cones of the pseudo-catadioptric elements and the neighboring toric elements, which could cause it to be impossible to demold in highly inclined parts of the ice. FIG. 8 in particular shows the straight lines D of transition between the zones Z1 and Z2, which correspond to the edges of the groove, and FIG. 9 shows the ribs of rectangular section N corresponding to the grooves of the mold.
Bien entendu, la présente invention n'est nullement limitée à la forme de réalisation décrite ci-dessus et représentée sur les dessins, mais l'homme de l'art saura y apporter toute variante ou modification conforme à son esprit.Of course, the present invention is in no way limited to the embodiment described above and shown in the drawings, but a person skilled in the art will know how to make any variant or modification in accordance with his spirit.
En particulier, une même glace réalisée selon l'invention pourra comporter des éléments pseudo-catadioptriques de conceptions différentes en matière d'angles au sommet des cônes et d'orientation de ces cônes. C'est ainsi que certains éléments pseudo-catadioptriques laissant passer la lumière peuvent cohabiter avec d'autres éléments pseudo-catadioptriques ne laissant pas passer la lumière.In particular, the same lens produced according to the invention may include pseudo-catadioptric elements of different designs in terms of angles at the top of the cones and of orientation of these cones. This is how certain pseudo-catadioptric elements allowing light to pass can coexist with other pseudo-catadioptric elements not allowing light to pass through.
Claims (12)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9115916 | 1991-12-20 | ||
| FR9115916A FR2685440B1 (en) | 1991-12-20 | 1991-12-20 | WINDOW FOR OPTICAL SIGNALING DEVICE EQUIPPED WITH PSEUDO-CATADIOPTRIC ELEMENTS. |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0549423A1 true EP0549423A1 (en) | 1993-06-30 |
| EP0549423B1 EP0549423B1 (en) | 1997-03-12 |
Family
ID=9420314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP92403444A Expired - Lifetime EP0549423B1 (en) | 1991-12-20 | 1992-12-17 | Lens for signalling optical device equipped with pseudo-catadioptric elements |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US5436762A (en) |
| EP (1) | EP0549423B1 (en) |
| AT (1) | ATE150157T1 (en) |
| BR (1) | BR9205074A (en) |
| DE (1) | DE69218162T2 (en) |
| ES (1) | ES2100322T3 (en) |
| FR (1) | FR2685440B1 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0637716A1 (en) * | 1993-07-07 | 1995-02-08 | Hella KG Hueck & Co. | Cover glass for a vehicle multifunction lamp |
| DE19737550A1 (en) * | 1996-09-18 | 1998-03-19 | Valeo Vision | Signal lamp for motor vehicle |
| DE19826905A1 (en) * | 1997-06-30 | 1999-01-07 | Valeo Vision | Vehicle signalling light |
| WO2000029254A1 (en) | 1998-11-12 | 2000-05-25 | Volkswagen Aktiengesellschaft | Motor vehicle tail light assembly with linear optics |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2743405B1 (en) * | 1996-01-10 | 1998-04-03 | Valeo Vision | SIGNAL LIGHT WITH INTERMEDIATE OPTICAL PROCESSING AND STYLE SCREEN AND METHOD FOR MANUFACTURING THE INTERMEDIATE SCREEN |
| DE19852999A1 (en) | 1998-11-17 | 2000-06-21 | Volkswagen Ag | Rear light with side optics for vehicles |
| DE10312367A1 (en) * | 2003-03-20 | 2004-09-30 | Hella Kg Hueck & Co. | Additional light panel for vehicle light, has first lens-like optical element regions on first surface and second non-lens-like optical element regions on first surface between first regions |
| US7484871B2 (en) * | 2003-07-29 | 2009-02-03 | Valeo Sylvania Llc | Single lens for LED signal light |
| DE102004051178B4 (en) | 2004-10-20 | 2018-07-12 | Volkswagen Ag | Headlight module for a vehicle |
| DE102021122451A1 (en) | 2021-08-31 | 2023-03-02 | HELLA GmbH & Co. KGaA | Lighting device for vehicles |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3779629A (en) * | 1971-06-23 | 1973-12-18 | Lucas Industries Ltd | Combined lens and reflector for a vehicle lamp |
| EP0472890B1 (en) * | 1990-08-10 | 1994-06-29 | Hella KG Hueck & Co. | Multi-compartment light for motor vehicle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR956566A (en) * | 1950-02-02 | |||
| US1878909A (en) * | 1923-12-10 | 1932-09-20 | Stimson Jonathan Cass | Signal lantern |
| GB443759A (en) * | 1935-07-16 | 1936-03-05 | Jonathan Cass Stimson | Moulded reflector |
| US2351080A (en) * | 1939-02-11 | 1944-06-13 | Swarovski Daniel | Signal device |
| DE2902772C2 (en) * | 1979-01-25 | 1981-02-12 | Heinz 5300 Bonn Konen | Multi-function rear light for road vehicles |
| FR2844822B1 (en) * | 2002-09-19 | 2005-06-24 | Procofi | LOCK |
-
1991
- 1991-12-20 FR FR9115916A patent/FR2685440B1/en not_active Expired - Fee Related
-
1992
- 1992-12-17 DE DE69218162T patent/DE69218162T2/en not_active Expired - Fee Related
- 1992-12-17 AT AT92403444T patent/ATE150157T1/en not_active IP Right Cessation
- 1992-12-17 US US07/992,067 patent/US5436762A/en not_active Expired - Lifetime
- 1992-12-17 ES ES92403444T patent/ES2100322T3/en not_active Expired - Lifetime
- 1992-12-17 EP EP92403444A patent/EP0549423B1/en not_active Expired - Lifetime
- 1992-12-18 BR BR9205074A patent/BR9205074A/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3779629A (en) * | 1971-06-23 | 1973-12-18 | Lucas Industries Ltd | Combined lens and reflector for a vehicle lamp |
| EP0472890B1 (en) * | 1990-08-10 | 1994-06-29 | Hella KG Hueck & Co. | Multi-compartment light for motor vehicle |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0637716A1 (en) * | 1993-07-07 | 1995-02-08 | Hella KG Hueck & Co. | Cover glass for a vehicle multifunction lamp |
| DE19737550A1 (en) * | 1996-09-18 | 1998-03-19 | Valeo Vision | Signal lamp for motor vehicle |
| DE19826905A1 (en) * | 1997-06-30 | 1999-01-07 | Valeo Vision | Vehicle signalling light |
| WO2000029254A1 (en) | 1998-11-12 | 2000-05-25 | Volkswagen Aktiengesellschaft | Motor vehicle tail light assembly with linear optics |
Also Published As
| Publication number | Publication date |
|---|---|
| DE69218162D1 (en) | 1997-04-17 |
| FR2685440A1 (en) | 1993-06-25 |
| EP0549423B1 (en) | 1997-03-12 |
| FR2685440B1 (en) | 1998-03-13 |
| ATE150157T1 (en) | 1997-03-15 |
| DE69218162T2 (en) | 1997-08-14 |
| US5436762A (en) | 1995-07-25 |
| BR9205074A (en) | 1993-08-10 |
| ES2100322T3 (en) | 1997-06-16 |
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