EP0645578A2 - Projector with smooth cover lens, particularly for vehicles, and manufacturing process for the reflector of same - Google Patents
Projector with smooth cover lens, particularly for vehicles, and manufacturing process for the reflector of same Download PDFInfo
- Publication number
- EP0645578A2 EP0645578A2 EP94402109A EP94402109A EP0645578A2 EP 0645578 A2 EP0645578 A2 EP 0645578A2 EP 94402109 A EP94402109 A EP 94402109A EP 94402109 A EP94402109 A EP 94402109A EP 0645578 A2 EP0645578 A2 EP 0645578A2
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- Prior art keywords
- substitution
- reflector
- zones
- headlamp
- network
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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
- F21S41/30—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by reflectors
- F21S41/32—Optical layout thereof
- F21S41/33—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature
- F21S41/334—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors
- F21S41/336—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of patch like sectors with discontinuity at the junction between adjacent areas
Definitions
- the invention relates to a headlamp, in particular a headlamp for a motor vehicle.
- a projector of the type comprising a light source such as a filament lamp generally devoid of a cup, a reflector having a surface chosen to form, in an axial and horizontal direction of illumination, images of the source according to a distribution determined, and a closing window.
- a light source such as a filament lamp generally devoid of a cup
- a reflector having a surface chosen to form, in an axial and horizontal direction of illumination, images of the source according to a distribution determined, and a closing window.
- it may be an area defined analytically so as to form images of the source, all of the points of which are situated below a predetermined cut.
- the documents FR-A-2 536 502 and FR-A-2 536 503 describe headlights of this type, which define, respectively, a passing beam and an anti-fog beam essentially by the particular conformation of the surface of the reflector.
- This type of projector avoids the recourse not only to a cup or screening screen, but also to a highly deflecting lens and thus provides good uniformity of spreading of the beam, in particular in the vertical direction.
- One of the objects of the invention is to provide a headlamp making it possible to produce a standardized light beam made homogeneous only by the reflector, in order to be able to use a smooth lens or provided with non-functional streaks, that is to say purely decorative and without optical role.
- the invention provides for making the streaks directly on the reflector of the projector by grouping them by zones according to the result to be achieved, these zones being defined in the same way as those found on the classic deviating ice.
- Patent GB-A-435,946 describes a headlamp for overcoming the deflecting streaks of a lens, and consisting of a stack of horizontal paraboloid slices; each section of this juxtaposition constitutes an independent reflector providing a deviation of the strictly parabolic type.
- the invention is particularly advantageously applied to a reflecting surface defined analytically so as to form images of the source, all of the points of which are situated below a predetermined cut-off.
- the substitution surfaces may be such that two adjacent substitution surfaces are connected either without a solution of continuity along their common edge, or else by means of a draft along their common edge.
- the substitution surfaces are adjoining surfaces which are continuously connected in horizontal direction to each other along their common edge.
- Figure 1 is a schematic sectional view of a projector according to the invention.
- FIG. 2 shows the manner in which the streak zones are distributed over the surface of the reflector as a function of a plane definition of the network of deflecting zones.
- FIG. 3 is a front view of the planar network of deflecting zones of FIG. 2.
- Figure 4 is a partial view, in horizontal section, of the surface of the reflector of Figures 1 and 2, in a first embodiment.
- Figure 5 is equivalent to Figure 4, for an alternative embodiment of the invention.
- Figure 6 is homologous to Figure 3, for a second embodiment.
- a headlamp for a motor vehicle comprising a light source 10, in this case a filament lamp, a reflector or mirror 20 of the aforementioned type with an analytically defined surface, possibly truncated by two half-planes 21 and 22, and a closing glass 30.
- the light source 10 does not have any cup or screening screen, the cut-off being defined by the mere fact of the shape of the reflector 20.
- the assembly produces a light beam towards the front of the vehicle, in a direction of illumination ⁇ axial and horizontal.
- the filament can be replaced by the arc of a discharge lamp.
- the closing glass 30 is essentially smooth or simply provided with decorative ridges, without optical role, the homogenization and spreading of the beam in the horizontal direction being carried out only by the reflector 20.
- a network of streak zones is defined as a function of the desired result, in a manner identical to that which would have been defined on a closing glass.
- each of the zones 41 is projected onto the surface 23 of the reflector 20, thus defining thereon a homologous zone 24 of curvilinear contour (the zones 41 have a polygonal contour) , and a substitution surface forming a streak is formed at the location of each zone 24 of the reflector, this substitution surface 24 being defined with respect to the projection surface (analytically defined surface) 23 by a differential gap ⁇ , in a horizontal plane, corresponding to the profile that the homologous streak would have if it had been formed on a closing glass.
- the discontinuities resulting from the horizontal transition zones are reflected on the illumination diagram by horizontal lines generating glare, which are further amplified when it is necessary to coat the mirror d '' a protective varnish, because it tends to deposit irregularly and to concentrate more or less unpredictably around the discontinuities.
- the use of progressive streaks in particular makes it possible to overcome this difficulty.
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- General Engineering & Computer Science (AREA)
- Non-Portable Lighting Devices Or Systems Thereof (AREA)
- Optical Elements Other Than Lenses (AREA)
Abstract
Description
L'invention concerne un projecteur, notamment un projecteur pour véhicule automobile.The invention relates to a headlamp, in particular a headlamp for a motor vehicle.
Elle concerne notamment un projecteur du type comportant une source lumineuse telle qu'une lampe à filament généralement dépourvue de coupelle, un réflecteur possédant une surface choisie pour former, dans une direction axiale et horizontale d'éclairement, des images de la source selon une répartition déterminée, et une glace de fermeture. Selon un exemple non limitatif, il peut s'agir d'une surface définie analytiquement de manière à former des images de la source dont tous les points sont situés au-dessous d'une coupure prédéterminée.It relates in particular to a projector of the type comprising a light source such as a filament lamp generally devoid of a cup, a reflector having a surface chosen to form, in an axial and horizontal direction of illumination, images of the source according to a distribution determined, and a closing window. According to a nonlimiting example, it may be an area defined analytically so as to form images of the source, all of the points of which are situated below a predetermined cut.
Les documents FR-A-2 536 502 et FR-A-2 536 503 décrivent des projecteurs de ce type, qui définissent, respectivement, un faisceau de croisement et un faisceau antibrouillard essentiellement par la conformation particulière de la surface du réflecteur.The documents FR-A-2 536 502 and FR-A-2 536 503 describe headlights of this type, which define, respectively, a passing beam and an anti-fog beam essentially by the particular conformation of the surface of the reflector.
Ce type de projecteur évite le recours non seulement à une coupelle ou écran d'occultation, mais également à une glace fortement déviatrice et procure ainsi une bonne uniformité d'étalement du faisceau, notamment en direction verticale.This type of projector avoids the recourse not only to a cup or screening screen, but also to a highly deflecting lens and thus provides good uniformity of spreading of the beam, in particular in the vertical direction.
Ces projecteurs, de même que des projecteurs conventionnels, ont cependant jusqu'à présent nécessité l'emploi d'une glace de fermeture pourvue de zones déflectrices (telles que des stries ou demi-stries), notamment pour étaler et homogénéiser le faisceau en direction horizontale.These projectors, like conventional projectors, have however hitherto required the use of a closing glass provided with deflecting zones (such as ridges or half-ridges), in particular for spreading and homogenizing the beam in the direction horizontal.
Dans ce cas, lorsque la glace est fortement inclinée - ce qui peut être souhaitable pour des raisons de style - il devient difficile de réaliser ces zones déviatrices, dont l'efficacité se dégrade au fur et à mesure que l'on doit incliner la glace de fermeture.In this case, when the glass is strongly tilted - which may be desirable for reasons of style - it it becomes difficult to carry out these deflecting zones, the effectiveness of which deteriorates as the closing glass has to be tilted.
L'un des buts de l'invention est de réaliser un projecteur permettant de produire un faisceau lumineux normalisé rendu homogène uniquement par le réflecteur, afin de pouvoir utiliser une glace lisse ou munie de stries non fonctionnelles, c'est-à-dire purement décorative et sans rôle optique.One of the objects of the invention is to provide a headlamp making it possible to produce a standardized light beam made homogeneous only by the reflector, in order to be able to use a smooth lens or provided with non-functional streaks, that is to say purely decorative and without optical role.
Essentiellement, pour atteindre ce but, l'invention prévoit de réaliser les stries directement sur le réflecteur du projecteur en les groupant par zones en fonction du résultat à atteindre, ces zones étant définies de la même manière que celles que l'on trouve sur les glaces déviatrices classiques.Essentially, to achieve this goal, the invention provides for making the streaks directly on the reflector of the projector by grouping them by zones according to the result to be achieved, these zones being defined in the same way as those found on the classic deviating ice.
Le brevet GB-A-435 946 décrit un projecteur permettant de s'affranchir des stries déviatrices d'une glace, et constitué d'un empilement de tranches de paraboloïde horizontales ; chacune des tranches de cette juxtaposition constitue un réflecteur indépendant procurant une déviation de type strictement parabolique.Patent GB-A-435,946 describes a headlamp for overcoming the deflecting streaks of a lens, and consisting of a stack of horizontal paraboloid slices; each section of this juxtaposition constitutes an independent reflector providing a deviation of the strictly parabolic type.
L'invention propose un projecteur, notamment pour véhicule automobile, comportant :
- une source lumineuse,
- un réflecteur dont une surface de base est apte à former, dans une direction axiale et horizontale d'éclairement, des images de la source selon une répartition déterminée, et
- une glace de fermeture,
caractérisé en ce que : - la glace de fermeture est essentiellement dépourvue de stries déviatrices, et
- le réflecteur comporte, sur au moins une partie de sa surface, une pluralité de zones à l'endroit desquelles ladite surface de base est remplacée par des surfaces de substitution dont le contour est défini par la projection sur la surface de base, selon ladite direction axiale, d'un réseau plan de zones polygonales, notamment rectangulaires, défini en fonction d'une répartition prédéterminée du flux lumineux, ce réseau de zones étant homologue de celui qui aurait été obtenu s'il avait été un réseau de zones de stries formé sur la glace de fermeture, et l'écart différentiel, dans un plan horizontal, entre surface de base et surface de substitution, correspondant au profil qu'aurait la strie homologue qui aurait été formée dans ce cas sur la glace de fermeture.
- a light source,
- a reflector, a base surface of which is capable of forming, in an axial and horizontal direction of illumination, images of the source according to a determined distribution, and
- a closing window,
characterized in that: - the closing glass is essentially free of deflecting streaks, and
- the reflector comprises, on at least part of its surface, a plurality of zones at the place where said base surface is replaced by substitution surfaces whose contour is defined by projection on the base surface, in said direction axial, of a plane network of polygonal zones, in particular rectangular, defined as a function of a predetermined distribution of the light flux, this network of zones being homologous to that which would have been obtained if it had been a network of streak zones formed on the closing glass, and the differential gap, in a horizontal plane, between base surface and substitution surface, corresponding to the profile that the homologous streak would have which would have been formed in this case on the closing glass.
L'invention concerne également un procédé de fabrication d'un réflecteur de projecteur, notamment pour véhicule automobile, le réflecteur étant apte à former des images de la source selon une répartition déterminée et le projecteur comportant une glace de fermeture est essentiellement dépourvue de stries déviatrices, caractérisé en ce qu'il comprend les étapes consistant à:
- définir une surface réfléchissante de base du réflecteur de manière à former, dans une direction axiale et horizontale d'éclairement, des images de la source selon une répartition de base,
- sur au moins une partie de la surface réfléchissante de base, remplacer une pluralité de zones de cette surface par des surfaces de substitution, en définissant le contour de ces surfaces par la projection sur la surface de base, selon ladite direction axiale, d'un réseau plan de zones polygonales, notamment rectangulaires, défini en fonction d'une répartition prédéterminée du flux lumineux, ce réseau de zones étant homologue de celui qui aurait été obtenu s'il avait été un réseau de zones de stries formé sur la glace de fermeture, et en choisissant un écart différentiel, dans un plan horizontal, entre surface de base et surface de substitution correspondant au profil qu'aurait la strie homologue qui aurait été formée dans ce cas sur la glace de fermeture,
- réaliser un moule de réflecteur par usinage en fonction de données des surfaces de base et de substitution, et
- mouler le réflecteur à l'aide dudit moule.
- defining a basic reflecting surface of the reflector so as to form, in an axial and horizontal direction of illumination, images of the source according to a basic distribution,
- on at least part of the base reflecting surface, replace a plurality of zones of this surface with substitution surfaces, by defining the outline of these surfaces by the projection on the base surface, in said axial direction, of a planar network of polygonal zones, in particular rectangular zones, defined as a function of a predetermined distribution of the luminous flux, this network of zones being homologous to that which would have been obtained if it had been a network of zones of ridges formed on the closing glass , and by choosing a differential distance, in a horizontal plane, between base surface and substitution surface corresponding to the profile that would have the homologous streak which would have been formed in this case on the closing glass,
- make a reflector mold by machining according to data from the base and substitution surfaces, and
- mold the reflector using said mold.
L'invention s'applique particulièrement avantageusement à une surface réfléchissante définie analytiquement de manière à former des images de la source dont tous les points sont situés au-dessous d'une coupure prédéterminée.The invention is particularly advantageously applied to a reflecting surface defined analytically so as to form images of the source, all of the points of which are situated below a predetermined cut-off.
Selon le cas, les surfaces de substitution peuvent être telles que deux surfaces de substitution adjacentes se raccordent ou bien sans solution de continuité le long de leur arête commune, ou bien par l'intermédiaire d'une dépouille le long de leur arête commune.Depending on the case, the substitution surfaces may be such that two adjacent substitution surfaces are connected either without a solution of continuity along their common edge, or else by means of a draft along their common edge.
Selon un autre aspect préférentiel de l'invention, sur au moins la majeure partie du réflecteur les surfaces de substitution sont des surfaces attenantes se raccordant continûment en direction horizontale les unes aux autres le long de leur arête commune.According to another preferred aspect of the invention, on at least most of the reflector, the substitution surfaces are adjoining surfaces which are continuously connected in horizontal direction to each other along their common edge.
D'autres caractéristiques et avantages de l'invention apparaitront à la lecture de la description détaillée ci-dessous, faite en référence aux dessins annexés.Other characteristics and advantages of the invention will appear on reading the detailed description below, made with reference to the accompanying drawings.
La figure 1 est une vue schématique en coupe d'un projecteur selon l'invention.Figure 1 is a schematic sectional view of a projector according to the invention.
La figure 2 montre la manière dont les zones de stries sont réparties sur la surface du réflecteur en fonction d'une définition plane du réseau de zones déviatrices.FIG. 2 shows the manner in which the streak zones are distributed over the surface of the reflector as a function of a plane definition of the network of deflecting zones.
La figure 3 est une vue de face du réseau plan de zones déviatrices de la figure 2.FIG. 3 is a front view of the planar network of deflecting zones of FIG. 2.
La figure 4 est une vue partielle, en coupe horizontale, de la surface du réflecteur des figures 1 et 2, dans une première forme de réalisation.Figure 4 is a partial view, in horizontal section, of the surface of the reflector of Figures 1 and 2, in a first embodiment.
La figure 5 est homologue de la figure 4, pour une variante de réalisation de l'invention.Figure 5 is equivalent to Figure 4, for an alternative embodiment of the invention.
La figure 6 est homologue de la figure 3, pour une seconde forme de réalisation.Figure 6 is homologous to Figure 3, for a second embodiment.
Sur la figure 1, on a représenté très schématiquement un projecteur pour véhicule automobile, comportant une source lumineuse 10, en l'espèce une lampe à filament, un réflecteur ou miroir 20 du type précité à surface définie analytiquement, éventuellement tronqué par deux demi-plans 21 et 22, et une glace de fermeture 30. La source lumineuse 10 ne comporte aucune coupelle ni écran d'occultation, la coupure étant définie du seul fait de la forme du réflecteur 20. L'ensemble produit un faisceau lumineux vers l'avant du véhicule, dans une direction d'éclairement Δ axiale et horizontale.In Figure 1, there is shown very schematically a headlamp for a motor vehicle, comprising a
On notera que le filament peut être remplacé par l'arc d'une lampe à décharge.Note that the filament can be replaced by the arc of a discharge lamp.
De façon caractéristique de l'invention, la glace de fermeture 30 est essentiellement lisse ou simplement munie de stries décoratives, sans rôle optique, l'homogénéisation et l'étalement du faisceau en direction horizontale étant réalisés uniquement par le réflecteur 20.Characteristically of the invention, the
A cet effet, on définit dans un plan 40, perpendiculaire à la direction d'éclairement Δ, un réseau de zone de stries en fonction du résultat recherché, d'une manière identique à ce que l'on aurait défini sur une glace de fermeture classique, déviatrice, s'étendant perpendiculairement à la direction d'éclairement Δ.To this end, in a
On peut voir sur la figure 3, de face, un réseau de zones déviatrices correspondant à une première forme de réalisation de l'invention, pour un miroir de projecteur gauche. Ces zones déviatrices sont référencées 41 et peuvent être, chacune, attenantes ou non à d'autres zones voisines.We can see in Figure 3, from the front, a network of deflecting zones corresponding to a first embodiment of the invention, for a left projector mirror. These deviating zones are referenced 41 and may, each, be contiguous or not to other neighboring zones.
On projette alors, suivant Δ qui constitue la direction de projection à cet effet, chacune des zones 41 sur la surface 23 du réflecteur 20, définissant ainsi sur celui-ci une zone homologue 24 de contour curviligne (les zones 41 ont un contour polygonal), et on forme à l'endroit de chaque zone 24 du réflecteur une surface de substitution formant strie, cette surface de substitution 24 étant définie par rapport à la surface de projection (surface définie analytiquement) 23 par un écart différentiel δ, dans un plan horizontal, correspondant au profil qu'aurait la strie homologue si celle-ci avait été formée sur une glace de fermeture.Then, according to Δ which constitutes the direction of projection for this purpose, each of the
On peut voir notamment figure 4 le profil de cette strie, dont la forme légèrement bombée présente avec la surface de projection 23 un écart différentiel en direction normale δ de 0,1 à 0,5 mm. Un écart plus important peut toutefois être utilisé si l'on veut donner aux stries un effet prismatique.We can see in particular Figure 4 the profile of this streak, whose slightly curved shape has with the projection surface 23 a differential deviation in the normal direction δ from 0.1 to 0.5 mm. However, a larger gap can be used if the streaks are to be given a prismatic effect.
Sur la figure 4, on a représenté des stries complètes, c'est-à-dire que les surfaces 24 adjacentes se raccordent entre elles sans solution de continuité le long de leur arête commune 25. En variante, on peut prévoir, à la place de ces stries, des demi-stries, ici encore orientées essentiellement verticalement, se raccordant les unes aux autres par des dépouilles 26, comme illustré figure 5, ce qui n'est aucunement gênant compte tenu de l'orientation essentiellement verticale de ces demi-stries, les éventuels défauts dûs aux discontinuités entraînées par les dépouilles ne se traduisant que par des déviations latérales des rayons lumineux concernés.In FIG. 4, complete streaks have been shown, that is to say that the
Dans une seconde forme de réalisation, illustrée en figure 6 (et correspondant à un projecteur droit), on utilise des stries dites "évolutives", c'est-à-dire dont le profil varie continûment lorsqu'on se déplace sur leur longueur, les différentes zones 41 étant, sur la majeure partie du réflecteur, des surfaces attenantes se raccordant de façon continue les unes aux autres en direction horizontale le long de leur arête commune.In a second embodiment, illustrated in FIG. 6 (and corresponding to a straight headlamp), so-called "progressive" streaks are used, that is to say the profile of which varies continuously when moving along their length, the
En effet, dans la première forme de réalisation, les discontinuités résultant des zones de transition horizontale se traduisent sur le diagramme d'éclairement par des lignes horizontales génératrices d'éblouissements, qui sont en outre amplifiées lorsqu'il est nécessaire de revêtir le miroir d'un vernis protecteur, car ce dernier a tendance à se déposer de manière irrégulière et à se concentrer de façon plus ou moins imprévisible autour des discontinuités. L'utilisation de stries évolutives permet notamment de pallier cette difficulté.Indeed, in the first embodiment, the discontinuities resulting from the horizontal transition zones are reflected on the illumination diagram by horizontal lines generating glare, which are further amplified when it is necessary to coat the mirror d '' a protective varnish, because it tends to deposit irregularly and to concentrate more or less unpredictably around the discontinuities. The use of progressive streaks in particular makes it possible to overcome this difficulty.
Claims (10)
le réflecteur comportant, sur au moins une partie de sa surface, une pluralité de zones à l'endroit desquelles ladite surface de base (23) est remplacée par des surfaces de substitution (24) dont le contour est défini par la projection sur la surface de base, selon ladite direction axiale (Δ), d'un réseau plan (40) de zones polygonales (41), notamment rectangulaires, défini en fonction d'une répartition prédéterminée du flux lumineux, ce réseau de zones étant homologue de celui qui aurait été obtenu s'il avait été un réseau de zones de stries formé sur la glace de fermeture, et l'écart différentiel (Ó), dans un plan horizontal, entre surface de base et surface de substitution, correspondant au profil qu'aurait la strie homologue qui aurait été formée dans ce cas sur la glace de fermeture.
the reflector comprising, on at least part of its surface, a plurality of zones at the location of which said base surface (23) is replaced by substitution surfaces (24) whose contour is defined by projection on the surface basic, in said axial direction (Δ), of a planar network (40) of polygonal zones (41), in particular rectangular, defined as a function of a predetermined distribution of the light flux, this network of zones being homologous to that which would have been obtained if it had been a network of streak zones formed on the closing glass, and the differential gap (Ó), in a horizontal plane, between base surface and substitution surface, corresponding to the profile that would have the homologous streak that would have formed in this case on the closing glass.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| FR9311403A FR2710393B1 (en) | 1993-09-24 | 1993-09-24 | Smooth glass headlamp, in particular for a motor vehicle, and method for manufacturing the reflector of such a headlamp. |
| FR9311403 | 1993-09-24 |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP0645578A2 true EP0645578A2 (en) | 1995-03-29 |
| EP0645578A3 EP0645578A3 (en) | 1995-04-26 |
| EP0645578B1 EP0645578B1 (en) | 1999-03-10 |
Family
ID=9451212
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94402109A Expired - Lifetime EP0645578B1 (en) | 1993-09-24 | 1994-09-22 | Projector with smooth cover lens, particularly for vehicles, and manufacturing process for the reflector of same |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US5567044A (en) |
| EP (1) | EP0645578B1 (en) |
| JP (1) | JP3579930B2 (en) |
| DE (1) | DE69416922T2 (en) |
| FR (1) | FR2710393B1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19747314A1 (en) * | 1996-11-08 | 1998-05-14 | Valeo Vision | Motor vehicle headlamp with multi-zone reflector |
| US5826964A (en) * | 1996-01-29 | 1998-10-27 | Autopal S.R.O. | Headlamp with complex reflector |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2760068B1 (en) * | 1997-02-21 | 1999-05-14 | Valeo Vision | MOTOR VEHICLE PROJECTOR WITH MIRROR WITH SIDE-BY-SIDE ZONES, AND METHOD FOR MANUFACTURING SUCH A MIRROR |
| FR2763666B1 (en) * | 1997-05-23 | 1999-08-13 | Valeo Vision | MOTOR VEHICLE PROJECTOR WITH WIDE BEAM GENERATOR AND WINDOW GLASS |
| FR2774149B1 (en) | 1998-01-28 | 2000-04-14 | Valeo Vision | MOTOR VEHICLE HEADLIGHT, INCLUDING A CROSS-SECTIONAL SOURCE, AND CAPABLE OF GENERATING A BEAM WITH NON-RECTILLINE CUT |
| FR2774151B1 (en) | 1998-01-28 | 2000-04-14 | Valeo Vision | MOTOR VEHICLE PROJECTOR WITH VIRTUAL LIGHT SOURCE |
| FR2774150B1 (en) | 1998-01-28 | 2000-04-14 | Valeo Vision | CROSS-SOURCE PROJECTOR FOR A MOTOR VEHICLE, LIKELY TO TRANSMIT A BEAM WITH A CLEAR CUT |
| FR2782148B1 (en) | 1998-08-10 | 2001-02-09 | Valeo Vision | MOTOR VEHICLE PROJECTOR WITH A TWO-FILAMENT LAMP AND AN IMPROVED MIRROR |
| FR2782549B1 (en) | 1998-08-18 | 2001-03-02 | Valeo Vision | MOTOR VEHICLE PROJECTOR PROVIDED WITH MEANS FOR SELECTIVELY TRANSMITTING A BEAM FOR RIGHT OR LEFT TRAFFIC |
| JP4031600B2 (en) * | 1999-10-01 | 2008-01-09 | 株式会社小糸製作所 | Method for determining reflecting surface of reflector for vehicle lamp |
| FR2800439B1 (en) | 1999-10-29 | 2002-02-15 | Valeo Vision | VEHICLE PROJECT, ESPECIALLY CROSSING PROJECTOR, WITH REDUCED OVERALL |
| FR2804495B1 (en) | 2000-01-31 | 2002-06-07 | Valeo Vision | MOTOR VEHICLE HEADLIGHT, INCLUDING A CROSS-SECTIONAL SOURCE, AND CAPABLE OF GENERATING A BEAM WITH NON-RECTILLINE CUT |
| FR2822929B1 (en) | 2001-03-30 | 2003-12-12 | Valeo Vision | REDUCED OVERALL PROJECTOR FOR MOTOR VEHICLE |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1732884A (en) * | 1927-02-14 | 1929-10-22 | Indiana Lamp Corp | Reflector for headlights |
| GB435946A (en) * | 1933-07-13 | 1935-10-02 | Machal Projecteurs | Improvements in or relating to machines for the manufacture of corrugated reflectorsespecially for automobile headlights |
| FR2460442A1 (en) * | 1979-06-29 | 1981-01-23 | Cibie Projecteurs | NEW PROJECTOR STRUCTURE, IN PARTICULAR OF AUTOMOTIVE PROJECTOR |
| EP0084934A1 (en) * | 1982-01-16 | 1983-08-03 | LUCAS INDUSTRIES public limited company | Lamp reflector |
| FR2536502A1 (en) * | 1982-11-19 | 1984-05-25 | Cibie Projecteurs | CROSSING PROJECTOR FOR MOTOR VEHICLE |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE435946C (en) * | 1925-12-24 | 1926-10-20 | Mikron G M B H | Drawing device with two parallel guide arms connected in series |
| FR986492A (en) * | 1949-03-09 | 1951-08-01 | Holophane | Improvements to reflectors with reflective internal surface |
| US2999924A (en) * | 1957-09-10 | 1961-09-12 | Mottier Felix | Anti-fog lighting projector |
| US3511983A (en) * | 1967-04-10 | 1970-05-12 | Corning Glass Works | Lighting device for dental and surgical procedures |
| US4087682A (en) * | 1976-03-15 | 1978-05-02 | Kolodziej Henry W | Illuminating device |
| JP2604646B2 (en) * | 1991-01-28 | 1997-04-30 | 株式会社小糸製作所 | Vehicle headlight reflector |
-
1993
- 1993-09-24 FR FR9311403A patent/FR2710393B1/en not_active Expired - Lifetime
-
1994
- 1994-09-22 DE DE69416922T patent/DE69416922T2/en not_active Expired - Lifetime
- 1994-09-22 EP EP94402109A patent/EP0645578B1/en not_active Expired - Lifetime
- 1994-09-23 US US08/311,552 patent/US5567044A/en not_active Expired - Lifetime
- 1994-09-26 JP JP22987894A patent/JP3579930B2/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1732884A (en) * | 1927-02-14 | 1929-10-22 | Indiana Lamp Corp | Reflector for headlights |
| GB435946A (en) * | 1933-07-13 | 1935-10-02 | Machal Projecteurs | Improvements in or relating to machines for the manufacture of corrugated reflectorsespecially for automobile headlights |
| FR2460442A1 (en) * | 1979-06-29 | 1981-01-23 | Cibie Projecteurs | NEW PROJECTOR STRUCTURE, IN PARTICULAR OF AUTOMOTIVE PROJECTOR |
| EP0084934A1 (en) * | 1982-01-16 | 1983-08-03 | LUCAS INDUSTRIES public limited company | Lamp reflector |
| FR2536502A1 (en) * | 1982-11-19 | 1984-05-25 | Cibie Projecteurs | CROSSING PROJECTOR FOR MOTOR VEHICLE |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5826964A (en) * | 1996-01-29 | 1998-10-27 | Autopal S.R.O. | Headlamp with complex reflector |
| DE19747314A1 (en) * | 1996-11-08 | 1998-05-14 | Valeo Vision | Motor vehicle headlamp with multi-zone reflector |
| US6017138A (en) * | 1996-11-08 | 2000-01-25 | Valeo Vision | Motor vehicle headlamp having a discharge lamp with masks and a multi-zone reflector |
| DE19747314B4 (en) * | 1996-11-08 | 2014-05-22 | Valeo Vision | Motor vehicle headlight with a discharge lamp with cover elements and a multi-zone reflector |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3579930B2 (en) | 2004-10-20 |
| DE69416922D1 (en) | 1999-04-15 |
| FR2710393A1 (en) | 1995-03-31 |
| EP0645578A3 (en) | 1995-04-26 |
| DE69416922T2 (en) | 1999-07-22 |
| JPH07169304A (en) | 1995-07-04 |
| EP0645578B1 (en) | 1999-03-10 |
| US5567044A (en) | 1996-10-22 |
| FR2710393B1 (en) | 1995-12-15 |
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