EP1600689A1 - Multifunction headlamp for motor vehicles - Google Patents

Abstract

The headlight has a reflector including two parts (R1, R2) assuring respective code and route functions. The parts form images of light sources (L1, L2) in points (Fg, Fd) and are situated on sides of a meridian plane. A cover plate (M) is placed between the sources and an optical unit (A) that has lens portions (1, 2) having respective optical axes passing through the respective points (Fg, Fd).

Description

The invention relates to a multifunctional light projector for a motor vehicle, of the type that includes a reflector ellipsoid type, two light sources associated respectively with each of the two functions, an optical means located in front of the reflector and a cache located between the light sources and the optical means.

The invention relates more particularly, but not exclusively, a luminous headlamp in which the first function is a function code while the second function is a route function.

A conventional projector of the elliptical type, that is to say with a reflector of ellipsoidal or multi-ellipsoidal type, includes a fixed cover and allows only one function, usually the code function. he then it is necessary to use an additional projector to fill the route function.

To avoid the need for two projectors to ensure two functions, efforts have been made to design dual-function projectors, or, more Generally, multi function ..

Among the proposed solutions, we can note those that provide a movement of the cache to place the cache in a position active for the function code and in an erased position for the function road. This movement can be a tilting or a translation or another rotation of the cache in its plane, in particular by a command with electromagnet. This configuration is commonly used with a xenon lamp, also called a discharge lamp, or with a lamp of the type halogen. However, the movement of the cache requires systems costly mechanical designs and costly actuators to purchase in production. In addition, mechanism movements often emit a noise that can be criticized by the user. Some types of movements are accompanied, when changing from the route function to the code function, of a bounce of the cache. This results in an annoying visual effect for the user and, in addition, a risk of dazzle for the driver who comes in the opposite direction in the lapse of time following the passage of the function route to the code function.

U.S. Patent No. 4,914,747 discloses a bifunctional floodlight which prevents a movement of the cache. The projector includes a reflector having two parts separated by a meridian plane virtual horizontal passing substantially in the vicinity of at least one of light sources and parallel to the optical axis of the projector. Both parts of the reflector admit different foci staggered according to the direction of the optical axis. A first part of the reflector located first side of the meridian plane is assigned to the first code function, and a second part of the reflector located on the other side of the meridian plane is assigned to the second route function. The optical medium in front of the reflector is constituted by a convex plane lens of revolution, rotating its curved surface to the outside.

Although the projector according to US 4,144,747 avoids a movement cache, a number of disadvantages remain. The stream recovered the road part is relatively small given the output of the lens from the lower part of the reflector. In addition, the thickness of the cover creates a hole in the beam in the road position. In this same road position, the luminous flux in the lower part of the beam is weak, the light being sent essentially over the cut. Finally, the style of this projector, with a lens of revolution whose face curved is turned towards the observer, corresponds to a classical style elliptical and does not distinguish an evolution.

The invention aims, above all, to provide a light projector multi-function, including bi-function, which ensures at least two functions, including code and route functions, without requiring a movement of the cache, which ensures a luminous flux recovered for the part road sufficiently high and whose optical means, seen by an observer, differs from the usual revolution lens of a projector type elliptical. It is furthermore desirable that the projector remains relatively simple and economical construction.

• la première partie de réflecteur forme une image de la première source lumineuse située du premier côté du plan méridien, sur le cache, ou au voisinage,
• la deuxième partie du réflecteur forme une image de la deuxième source lumineuse située de l'autre côté du plan méridien, et
• le moyen optique comprend une première et une deuxième portions de lentille situées de part et d'autre du plan méridien, la première portion de lentille ayant un axe optique qui passe par l'image de la première source donnée par la première partie de réflecteur, tandis que la deuxième portion de lentille admet un axe optique qui passe par l'image de la deuxième source donnée par la deuxième partie de réflecteur.

According to the invention, a multi-function light projector, in particular a bifunction for a motor vehicle, comprises an ellipsoid-type reflector, two light sources or two groups of light sources, namely a source or group of sources respectively associated with each function, a optical means located in front of the reflector and a cover located between the light sources and the optical means. The reflector comprises two parts separated by a virtual meridian plane passing substantially in the vicinity of at least one of the light sources, the two parts of the reflector admitting different foci, a first part of the reflector being located on a first side of the plane and being assigned to a first function, and a second part of the reflector located on the other side of the meridian plane being assigned to the second function, the two reflector parts having different focal points. The projector is characterized in that:

• the first reflector portion forms an image of the first light source located on the first side of the meridian plane, on the cache, or in the vicinity,
• the second part of the reflector forms an image of the second light source located on the other side of the meridian plane, and
• the optical means comprises first and second lens portions located on either side of the meridian plane, the first lens portion having an optical axis which passes through the image of the first source given by the first reflector portion, while the second lens portion has an optical axis which passes through the image of the second source given by the second reflector portion.

In the context of the invention, one of the parts of the reflector can also contribute to a function than the one to which it is more precisely dedicated.

Generally, the first function is an associated code function at the first reflector part, while the second function is a route function associated with the second reflector portion. But one of functions, including the road function, may in fact use not only the reflector part dedicated to it, but also the reflector part more particularly adapted to a code function (when a part of light rays emitted by the source on the road transmits towards the two parts of the reflector).

Advantageously, the first (or one of) (1.1m) portions of lens is convergent type, and the second (or other) (2.2m) portion of lens is convergent or divergent. The portion adapted to a road will be divergent or convergent, that adapted to a code will preferentially convergent.

The meridian plane of separation can be vertical. Both lens portions are placed side by side and joined together according to plan vertical meridian, the foci of the two lens portions are staggered transversely, the focus of the code portion lying on or in the neighborhood the top edge of the cache.

Advantageously, the light sources are constituted by two filaments of the same lamp, namely a filament code with a cup located on the opposite side to the reflector associated with the filament code, and a filament route free of any cup. They can also be constituted by two lamps halogen or two xenon lamps, or two diodes electroluminescent, or by two groups of diodes electroluminescent or other lamps. They can also associate two different types of lamp.

Advantageously, the two light sources can be two electroluminescent diodes or two groups of diodes electroluminescent ones distributed on both sides of the virtual meridian plane, whatever the orientation of said meridian plane. Preferably both light sources are two electroluminescent diodes arranged from and other of the virtual meridian plane, diodes arranged so as to be diametrically opposite to each other or inclined relative to each other the other. The inclination is chosen in particular so that the main axis of light emission from one of the diodes differs from that of the other diode. Preferably, the diodes are arranged to be inclined by ratio to the virtual meridian plane of an angle between 0 and 60 °, especially 5 and 50 ° .This angle of inclination is understood as the measure the angle between the meridian plane in question and the plane passing through the support of the diode, or between the meridian plane in question and the axis emitting principle of the diode (usually perpendicular to the plane of support of the diode).

According to one variant, the meridian separation plane can be horizontal. The two lens portions are united according to the plan horizontal meridian, one portion being located above the other. Faces (convex or concave) lens portions are rotated towards a observer located in front of the projector and the outline of all two portions seen in elevation recalls that of a number 8 or two truncated / contiguous circles.

The light sources may consist of two filaments of the same lamp, namely a filament code with a cup located on the opposite side to the reflector associated with the filament code, and a filament route free of any cup.

With a vertical meridian separation plane, the filament codes may be located on the inside of the vehicle and the associated part of the Reflector is also located towards the inside of the vehicle. The filament the road and the associated part of the reflector are located outside the vehicle. (One understands by "inside" the filament among the two which located closest to the longitudinal axis of the vehicle, once the headlamp mounted in the vehicle).

Generally in the patent, the terms "vertical", "horizontal", "lower" or "superior" refer to the configuration of the projector (or its components) in its normal position of use, once mounted in the vehicle.
With a horizontal meridian separation plane, the filament code may be located, with the associated portion of the reflector, on the upper side of the separation plane. The road filament is associated with the lower part of the reflector. The road filament is then advantageously horizontal: it may have a parallel, transverse or oblique orientation with respect to the optical axis of the portion of the lens that is assigned to it.

The cache is preferably essentially vertical, in particular transverse.

In a variant, the cover is formed by a plate essentially horizontal, also called folder. The upper face of the plate is advantageously reflecting, in particular aluminized. Preferably the focus of the code portion of the lens lies on the front edge of the plate.

In the case where the meridional plane of separation is horizontal and the Lens portions are vertically offset, light sources may be situated on, or in the vicinity of, the median line separating lens portions; the top of the reflector for the code function is then advantageously turned upwards by an angle such that its axis optic meets the horizontal cover on the axis of the portion superior lens.

Alternatively, the light sources may be located on, or in the vicinity of, the optical axis of the upper lens portion. The part lower reflector for the route function is then advantageously down an angle such that its optical axis passes below the horizontal cover located on the axis of the upper portion of the lens.

The lower portion of the lens, for the road function, can be diverging and the lower part of the reflector, for the road function, is turned down from a relatively weak angle.

The invention also relates to the vehicle on which is mounted at less a projector described above.

Fig.1 est une coupe schématique par un plan horizontal d'un projecteur lumineux selon l'invention.

Fig.2 est une vue en élévation du cache selon la ligne II - II de Fig.1.

Fig.3 est une vue de dessus schématique de deux sources lumineuses constituées par des diodes électroluminescentes.

Fig.4 est une vue de droite, par rapport à Fig.1 des deux portions de lentille accolées.

Fig.5 est une vue schématique de dessus, en coupe horizontale, des projecteurs gauche et droit d'un véhicule.

Fig.6 est une coupe schématique par un plan vertical d'une variante de réalisation du projecteur selon l'invention.

Fig.7 est une vue de droite par rapport à Fig.6 , à plus grande échelle, du cache du projecteur de Fig.6.

Fig.8 est une coupe schématique par un plan vertical d'une autre variante de projecteur selon l'invention.

Fig.9 illustre, semblablement à Fig.8, une autre variante de réalisation.

Fig.10 est une vue en perspective d'une variante de cache.

Fig.11 est une vue en perspective d'une autre variante de cache.

Fig.12 est une coupe verticale schématique d'une variante de réalisation dans laquelle la partie supérieure du réflecteur a subi une rotation.

Fig.13 montre une autre variante de réalisation selon laquelle la partie inférieure du réflecteur a subi une rotation et

Fig.14 montre une autre variante de réalisation dans laquelle la portion inférieure de lentille est divergente et la partie inférieure de réflecteur a subi une rotation plus faible que dans le cas de Fig.13.

The invention consists, apart from the arrangements set out above, in a certain number of other arrangements, which will be more explicitly discussed hereinafter with regard to exemplary embodiments described with reference to the appended drawings but which are in no way limiting. On these drawings:

Fig.1 is a schematic section through a horizontal plane of a light projector according to the invention.

Fig.2 is an elevational view of the cover along the line II - II of Fig.1.

Fig.3 is a schematic top view of two light sources constituted by light emitting diodes.

Fig.4 is a right view, relative to Fig.1 of the two contiguous lens portions.

Fig.5 is a schematic top view, in horizontal section, left and right headlights of a vehicle.

Fig.6 is a schematic section through a vertical plane of an alternative embodiment of the projector according to the invention.

Fig.7 is a right view with respect to Fig.6, on a larger scale, of the projector cover of Fig.6.

Fig.8 is a schematic section through a vertical plane of another projector variant according to the invention.

Fig.9 illustrates, similarly to Fig.8, another embodiment.

Fig.10 is a perspective view of a cache variant.

Fig.11 is a perspective view of another cache variant.

Fig.12 is a schematic vertical section of an alternative embodiment in which the upper part of the reflector has been rotated.

Fig.13 shows another alternative embodiment in which the lower part of the reflector has been rotated and

Fig.14 shows another alternative embodiment in which the lower lens portion is divergent and the lower reflector portion has undergone a lower rotation than in the case of Fig.13.

Referring to Fig.1 of the drawings we can see a section schematic horizontal of a bifunctional light projector, for vehicle automotive, to provide a function code and a route function.

The projector comprises an ellipsoid reflector R having two portions R1, R2 virtually separated by a plane vertical meridian P. The reflector R is in one piece, the parts R1 and R2 being integral with one another but having optical characteristics different. Part R1 admits a first home in the vicinity of which is located a first light source L1. This fireplace is located on one side of the plane P, on the left side according to the representation of FIG. 1, considering that the light spreads from left to right. Part R2 admits a first focus displaced transversely on the other side of the plane P, that is to say to the right according to Fig.1, with respect to the direction of propagation of the light. A second light source L2 is located in the vicinity of the first focus of R2.

The part R1 of the reflector is assigned to a first function, to know the function code, and form an image of the source L1 at a point Fg, to left of the plane P. The part R2 is assigned to the second function namely the route function, and forms an image of the source L2 at a point Fd on the right of the plane P.

According to the example of FIG. 1, the light sources L1, L2 are constituted by the two filaments b1, b2 of a double-filament lamp, by example a H4 or DFCS lamp (Double Filament Complex Shape), schematically represented without its glass envelope or its base. A opaque cup C, generally metallic, is arranged on the side of the filament b1 remote from the portion R1 of the reflector. In the example of Fig.1 the cup C is essentially vertical and prevents light rays from the filament b1 to reach the second reflector portion R2.

The sources L1, L2 are shifted in the direction of the axis Medium X-X optical projector. The source L2 is behind the source L1, according to the direction of propagation of the light. The two sources L1, L2 are further offset transversely to the plane P. The lamp double filament is advantageously a halogen lamp.

As a variant, the light sources L1, L2 as illustrated in FIG. FIG. 3 may be constituted by two light-emitting diodes D1, D2 maintained on both sides of the plane P and preferably inclined to illuminate to the corresponding reflector portion R1, R2. The diodes can be arranged symmetrically to the plane P, as shown, but it is not necessary. They are here inclined so as to make an angle relative to the plane P between, for example, 10 and 45 °. This angle is measured between the plane P and the plane passing through the support of the diodes (or, this which returns here to the same, between the plane P and the main axes of emission of light of the diodes, perpendicular to the plane of their respective supports).

The use of diodes is possible that the plane P is vertical, horizontal or oblique. The diodes can also be arranged "back to back", that is, arranged so that they emit in two half-spheres complementary.

In the case of a double filament lamp, the code function is ensured by the single filament b1, while the road function is provided by the filament b2 or by all of the two filaments b1 and b2. In the case where the diodes D1, D2 are used, the code function is ensured by a single diode D1 while the route function is provided by the two diodes D1, D2 lighted simultaneously.

The optical means A is located in front of the reflector R, according to the direction of light propagation, and in front of a cache M located in front of light sources L1, L2.

The cache M, shown in elevation on Fig.2 seen from the left by compared to Fig.1, intervenes on the light beams essentially by its the top part. The left side of the upper edge has a segment horizontal m0, which is extended on the right by a line segment m1 amount from left to right at a certain angle relative to the horizontal, for example 15 °. The two segments m0 and m1 define the code cut. The cache M is arranged so that the point Fg, image from the source L1 by R1, is at the vertex K, or in the vicinity of this vertex, the angle formed by the segments m0, m1. The segment m1 is extended, on the right, by a horizontal segment m2 located above the line of cut J shown in dashes. A descending segment m3 follows m2 segment. A horizontal segment m4 located below the line of break J follows the m3 segment. The point Fd, image of L2 by R2 is located in the free space determined by the segments m3, m4, but not necessarily in the plane of the cache M. The beam produced by the source L2 and the part R2 is not cut by the mask M.

The optical means A comprises a first lens portion 1 and a second lens portion 2 located on either side of the plane meridian P, and associated respectively with the first part R1 and the second part R2 of reflector.

The lens portions 1, 2 are convergent, convex flat, the curved side facing away from the reflector, outward. The outline of the optical medium seen in elevation appears on Fig.4 and resembles at a figure 8 lying horizontally. Lens portions 1 and 2 can be obtained by cutting two convex planar lenses according to a plane orthogonal to the plane face, the two lenses being glued according to their plane cutting. Alternatively, both portions 1, 2 may correspond to two areas of one and the same glass molded part or transparent plastic material. For an observer. the visible side the optical means A has two convex zones separated by a median depression.

The optical axis Y1 of the lens portion 1 passes through the point Fg and is parallel to the average axis X-X. The focus of lens portion 1 is confused with the point Fg or neighbor of this point.

The lens portion 2 has an optical axis Y2 parallel to X-X and passing through the point Fd. The focus of lens 2 is confused with Fd or neighbor of this point.

The optical means A is somehow formed by a single bi-axis lens that gives the projector, seen by an observer located in before, a very original aspect. The distance between points Fg and Fd determines the separation of functions. For a 60mm diameter lens, the distance separating Fg from Fd can be about 30mm. The Fd point can be find forward or backward from the orthogonal plane to the passing X-X direction by Fg.

The operation of the projector of Fig.1 is as follows. For the function code, the filament code b1 is electrically powered so as to illuminate the left part R1 of the reflector. This part, consisting of a surface generally of elliptical type, forms an image of the filament code at point Fg located in the plane of the cache M to the left of the meridian plane P.

The left zone m0, m1 (Fig.2) of the mask M has a cutout classic to form a projector cutoff code, V cut in the example shown for Europe. The example concerns a type break traffic on the right. The invention also applies to traffic-type cuts left (reverse cut), and flat cuts (like those used for fog lamps). In the case of a projector code for United States of America, the cut would be in the form of a march.

The lens portion 1 opposite the point Fg allows training of the beam code. During the code function, the L2 route filament is not electrically powered.

For the route function the b2 route filament is powered electrically. The filament b1 is also fed. The right part R2 The reflector forms an image of the road filament at point Fd. The part right 2 of the lens whose focus is at point Fd allows the formation of the beam, essentially from the upper part, which does not undergo cut. The lower part of the road beam is added to the code beam with overlapping part of the bundles to avoid a hole corresponding to the cache area.

The bi-axis lens 1.2 is simple to achieve. Just take two classic elliptical lenses from which the two portions are extracted desired.

Fig.5 shows, always in section by a horizontal plane as on Fig.1, a set of two projectors for a motor vehicle. The projector located on the right side of Fig.5 (right side of the vehicle) is identical to the projector of Fig.1. The first part R1 of the reflector is turned towards the longitudinal axis of the vehicle, that is to say inwards, then that the second part R2 is turned outward.

The projector located on the left of Fig.5 (left side of vehicle), has a symmetrical arrangement with respect to the longitudinal axis of the vehicle. The first reflector portion R1 ensuring the code function is located on the right while the R2 portion, assigned to the road, is located on the left side of the reflector. For this projector located on the left, the area right of the system performs the function code while the left area fills the road function.

The symmetrical arrangement with respect to the longitudinal axis of the vehicle Fig.5 provides a generally symmetrical photometry.

So we can say, about the projectors of Figs. 1 to 5, that each constituent element of a conventional elliptical projector, including reflector plus cache plus lens, is divided into two parts by a vertical meridian plane passing substantially in the vicinity of one of the filaments code or road lamp.

According to the examples described so far, both parties are separated in width by a vertical plane.

Referring to Fig.6 we can see a variant according to which the meridian plane of separation Pm is horizontal so both parties of the reflector R1m and R2m are arranged one above the other. It is similarly for the two lens portions 1m, 2m.

The duplication of the projector is no longer in width, but in height in the vertical direction. This type of configuration is well suited to a system using a DFCS lamp whose filament route b2m is transverse, horizontal, perpendicular to the plane of the figure. The filament b2m is, for example, at the same level as the cup C, behind of it. The Mm cache is located in a vertical plane between the sources bright and lens portions. The top edge of the Mm cache, seen from face (Fig.7), includes two horizontal segments offset in height, connected by an inclined segment, which corresponds to the V-cut of the code beam European.

The portion R1m of the reflector is intended to form the image of the filament b1m at a point Fh at the upper end of the segment inclined the upper edge of the screen Mm as shown in Fig.7. Point Fh can be only near the Mm cache. The bottom part R2m of the reflector forms the image of the filament b2m at a point Fb located below (Fig.7) of the Mm cache.

The light from the reflector R1m and the filament b1m is recovered by the high portion 1m lens opposite the "V" cut Mm cache for the code function.

The lens portion 1m has its focus at point Fh or at neighborhood, while the lower portion of 2m lens has its focus located at point Fb.

The operation is similar to that described for the figures preceding.

Front view, the bi-axis lens 1m, 2m has the appearance of a figure 8, the 1m portion being located above the 2m portion.

During the route function the two filaments b1m and b2m are powered so that the upper part of the beam is produced by the filament b2m, the reflector portion R2m and the lens portion 2m. The lower part includes the code part from the b1m filament. The set is intended for the two beams from R2 and R1 have a common range below the horizontal cutoff line of so that there is not an absence of sensible light or a "hole" in the area in front of the cache.

To optimize the amount of useful light, instead of the cache vertical Mm, it can be provided, as illustrated in Fig.8, a horizontal blade reflective N, preferably an aluminized or reflectorized glass slide on its upper face, which is put in place of the cache M or Mm of previous examples. The reflective plate N is also called "Folding". The face of the N blade which is not reflective can be possibly frosted to prevent the passage of parasitic rays.

The blade N has the shape of the cut that one wishes to realize for the beam. Fig. 10 shows an open V-shaped blade turning its tip towards the high, for the realization of a European code beam. The upper face 3 is aluminized.

Fig.11 illustrates a Na blade whose upper surface 3a presents the shape of the desired cut for a code beam in the United States of America. This form includes two extreme segments horizontally connected by a segment inclined substantially mid-length.

The upper portion 1m of the lens is focused on the face 4 of the folder farthest from the filaments of the light sources, plus precisely on the upper edge of this face at a point Fh.

The reflective plate N makes it possible to send back into the beam of rays such as 5 that previously fell in the M or Mn cache and who were lost? A significant gain in luminous flux can thus be obtained.

• soit sur l'axe médian entre les deux portions de lentille comme illustré sur Fig.8,
• soit sur l'axe optique de la portion de lentille supérieure 1m comme illustré sur Fig.9 afin de favoriser la fonction code.

In a projector where the lens portions 1m, 2m are stepped vertically, the filament code bm1 can be aligned:

• either on the median axis between the two lens portions as illustrated in FIG. 8,
• or on the optical axis of the upper lens portion 1m as illustrated in Fig.9 to promote the code function.

When the light sources are on the median axis between the two lens portions 1m, 2m can be rotated slightly angle α (FIG. 12) towards the top of the reflector portion R1m associated with the function code so that the optical axis of the part R1m meets the cahe N. The angle α may be of the order of about 12 °. This rotation of R1m around transverse horizontal axis perpendicular to the plane of the figure at joining of the parts R1m and R2m, makes it possible to direct the light from the filament b1m on the blade or folder N.

For a configuration such as Fig.13 where the filaments b1m, b2m are aligned or substantially aligned with the optical axis of the portion 1m upper lens, the lower part R2m of the reflector, associated with the road function, is inclined downwards by an angle β with respect to the position of Fig.8 to improve the road function. β can be for example about 10 °, and may be in particular between 5 and 15 °.

Fig.14 shows an alternative embodiment in which the filaments b1m, b2m light sources are aligned on the optical axis of the upper lens portion 1m. The lower part of R2m reflector dashed represents the inclined position of Fig.13.

We try to reduce the angle of inclination of the lower part R2m shown in dashes and to optimize the amount of luminous flux recovered by the reflector "road". We are also seeking to reduce image deformations due to the inclination of the axis of the part R2m, by relative to the optical axis of the lower lens portion. For that, we provides a divergent lower lens portion 2m2 in place of convergent lens portion 2m previously dedicated to the function road.

This arrangement makes it possible to limit the inclination of the part lower reflector at the position shown in full line R2m2 corresponding to an angle of inclination γ less than β. The angle γ can be less than 10 °.

In this way, the lower part of R2m2 reflector envelope much better the road light source (filament b2m), which optimizes the amount of useful light.

Whatever the exemplary embodiment, the invention makes it possible to ensure two functions, including code and route, without having to move a cache and implement for example an electromagnet or a mechanism, so that the system is economical. The bi-axis lens constituting the means Optical takes an original form while remaining easy to achieve, this which is a significant advantage in style.

Having two types of modules (in width and height), with different exit angles, easier integration into projector environments (ice, mask).

The last embodiment of Fig.14 is interesting for the luminous flux aspect. It also resolves the distribution problem of light in the side.

The splitting of surfaces in the vertical direction meets to current style trends.

In the embodiment of Fig.14 the introduction of a part less than 2m2 divergent lens gives interesting performance with creation of a particular style. In this case, the Fb focus mentioned more top becomes a virtual focus.

Claims (18)

Multi-function light projector, in particular a double-function lamp, for a motor vehicle, comprising a reflector (R) of ellipsoidal or multi-ellipsoidal type, two light sources or two groups of light sources (L1, L2), namely a source or group of sources associated respectively with each function, an optical means (A) located in front of the reflector and a cover located between the light sources and the optical means,
the reflector comprising two parts separated by a virtual meridian plane passing substantially in the vicinity of at least one of the light sources, the two parts of the reflector admitting different foci, a first part of the reflector being located on a first side of the plane and being assigned to a first function, and possibly contributing to the second function, and a second part of the reflector located on the other side of the meridian plane being assigned to the second function, characterized in that : the first reflector portion (R1) forms an image (Fg; Fh) of the first light source (L1, b1; b1m) located on the first side of the meridian plane (P, Pm) on or near the cache, the second portion (R2) of the reflector forms an image (Fd; Fb) of the second light source (L2, b2; b2m) located on the other side of the meridian plane (P, Pm), and the optical means (A) comprises a first (1,1m) and a second (2,2m) lens portions located on either side of the meridian plane, the first lens portion (1,1m) having an optical axis which passes through the image (Fg, Fh) of the first source given by the first reflector portion, while the second lens portion (2, 2m) admits an optical axis which passes through the image (Fd, Fb) of the second source given by the second reflector part. Projector according to claim 1, characterized in that the first function is a code function associated with the first part (R1, R1m) of the reflector, while the second function is a route function associated with the second part (R2, R2m) of reflector, and possibly also to the first part of the reflector (R1). Projector according to claim 1 or 2, characterized in that the meridian separation plane (P) is vertical, the two lens portions (1,2) being placed side by side and united according to the vertical meridian plane, the foci of the two lens portions being shifted transversely, the focus of the code portion being on or near the top edge of the cache. Projector according to claim 1 or 2, characterized in that the meridian plane of separation (P) is horizontal and the two lens portions (1m, 2m) are united along the horizontal meridian plane, a portion (1m) being situated above each other (2m). Projector according to claim 4, characterized in that the faces of the lens portions (1m, 2m) are turned towards the front of the projector and the contour of all the two portions seen in elevation recalls that of a numeral 8 or two truncated contiguous circles. Projector according to one of the preceding claims, characterized in that the light sources (L1, L2) are constituted by two filaments of the same lamp, namely a filament code (b1; b1m) with a cup (C) located on the side opposed to the reflector (R1) associated with the filament code, and a road filament (b2, b2m) free of any cup, or two halogen lamps or two xenon lamps, or two light emitting diodes, or two groups of light emitting diodes. Projector according to claim 6, characterized in that , the meridian plane of separation being vertical, the filament code (b1) is located on the inside of the vehicle and the associated part (R1) of the reflector is also located towards the inside of the vehicle , while the road filament (b2) and the associated part (R2) of the reflector are located towards the outside of the vehicle. Projector according to claim 6, characterized in that , the meridian plane of separation being horizontal, the filament code (b1m) is located, with the associated portion (R1m) of the reflector, on the upper side of the separation plane, while the filament route (b2m) is associated with the lower part (R2) of the reflector. Projector according to claim 8, characterized in that the road filament (b2m) is horizontal, and preferably parallel, transverse or oblique with respect to the optical axis of the lens portion assigned thereto. Projector according to any one of the preceding claims, characterized in that the cover is formed by a plate (N) essentially horizontal, also called folder. Projector according to claim 10, characterized in that the upper face of the plate (N) is reflective. Projector according to claim 4 or 5, characterized in that , the lens portions (1m, 2m) being vertically offset, the light sources (b1m, b2m) are located on or in the vicinity of, the center line separating the portions of lens, and the upper part (R1m) of the reflector for the code function is turned upward by an angle (α) such that its optical axis meets the horizontal cover (N) which is on the axis of the upper portion (1m) lens. Projector according to claim 4 or 5, characterized in that , the light sources (b1m, b2m) being situated on or in the vicinity of the optical axis of the upper portion (1m) of lens, the lower part (R2m) reflector for the road function is turned down by an angle (β) such that its optical axis passes below the horizontal cover (N) which is on the axis of the upper portion (1m) lens. Headlight according to claim 4 or 5, characterized in that the lower portion (2m2) of lens, for the road function, is divergent and the lower part of the reflector, for the road function, is turned downwards by an angle ( γ) relatively weak. Projector according to claim 2, characterized in that the first (1.1m) lens portion is convergent type, and in that the second (2.2m) lens portion is convergent or divergent. Projector according to one of claims 1 to 5, characterized in that the two light sources are two light emitting diodes or two groups of light emitting diodes distributed on either side of the virtual meridian plane. Projector according to Claim 16, characterized in that the two light sources are two light-emitting diodes arranged on either side of the virtual meridian plane, diodes arranged to be diametrically opposite to one another or inclined one to the other. compared to each other. Projector according to claim 16 or claim 17, characterized in that the diodes are arranged to be inclined relative to the virtual meridian plane by an angle between 0 and 60 °, in particular 5 and 50 °.

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