EP1600689B1 - Multifunktions-Scheinwerfer für Kraftfahrzeuge - Google Patents

Multifunktions-Scheinwerfer für Kraftfahrzeuge Download PDF

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Publication number
EP1600689B1
EP1600689B1 EP05291092.4A EP05291092A EP1600689B1 EP 1600689 B1 EP1600689 B1 EP 1600689B1 EP 05291092 A EP05291092 A EP 05291092A EP 1600689 B1 EP1600689 B1 EP 1600689B1
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EP
European Patent Office
Prior art keywords
reflector
situated
function
headlight according
meridian plane
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Not-in-force
Application number
EP05291092.4A
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English (en)
French (fr)
Other versions
EP1600689A1 (de
Inventor
Antoine De Lamberterie
Sébastien Casenave
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Valeo Vision SAS
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Valeo Vision SAS
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Publication of EP1600689A1 publication Critical patent/EP1600689A1/de
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/60—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution
    • F21S41/65—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources
    • F21S41/663—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on light sources by switching light sources
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/147—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device
    • F21S41/148—Light emitting diodes [LED] the main emission direction of the LED being angled to the optical axis of the illuminating device the main emission direction of the LED being perpendicular to the optical axis
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/162—Incandescent light sources, e.g. filament or halogen lamps
    • F21S41/164—Incandescent light sources, e.g. filament or halogen lamps having two or more filaments
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/19—Attachment of light sources or lamp holders
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/265—Composite lenses; Lenses with a patch-like shape
    • 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
    • F21S41/331—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas
    • F21S41/332—Multi-surface reflectors, e.g. reflectors with facets or reflectors with portions of different curvature the reflector consisting of complete annular areas with continuity at the junction between adjacent areas
    • 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
    • F21S41/36—Combinations of two or more separate reflectors
    • F21S41/365—Combinations of two or more separate reflectors successively reflecting the light
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/40—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades
    • F21S41/43—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by screens, non-reflecting members, light-shielding members or fixed shades characterised by the shape thereof
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21Y—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21S and F21V, RELATING TO THE FORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THE LIGHT EMITTED
    • F21Y2115/00—Light-generating elements of semiconductor light sources
    • F21Y2115/10—Light-emitting diodes [LED]

Definitions

  • the invention relates to a multifunctional light projector for a motor vehicle, of the type comprising an ellipsoid-type reflector, two light sources associated respectively with each of the two functions, an optical means situated in front of the reflector and a cover located between the two reflectors. light sources and the optical medium.
  • the invention relates more particularly, but not exclusively, to a light projector in which the first function is a code function while the second function is a road function.
  • a conventional elliptical type projector that is to say with a reflector of ellipsoidal or multi-ellipsoidal type, has a fixed cover and can only fill one function, usually the code function. It is then necessary to use an additional projector to fulfill the road function.
  • the patent U.S. Patent No. 4,914,747 discloses a bifunctional projector that avoids a movement of the cache.
  • the projector includes a reflector comprising two parts separated by a virtual horizontal meridian plane passing substantially in the vicinity of at least one of the light sources and parallel to the optical axis of the projector.
  • the two parts of the reflector admit different foci offset in the direction of the optical axis.
  • a first portion of the reflector located on a first side of the meridian plane is assigned to the first code function
  • a second portion of the reflector located on the other side of the meridian plane is assigned to the second route function.
  • the optical means located in front of the reflector is constituted by a plane convex lens of revolution, turning its convex surface outwards.
  • the object of the invention is, above all, to provide a multi-function light projector, particularly a bi-function light, which makes it possible to provide at least two functions, in particular code and route functions, without requiring a movement of the cache, which ensures a flow luminous recovered for the sufficiently high road part and whose optical means, seen by an observer, differs from the usual lens of revolution of an elliptical type projector. It is further desirable that the projector remains of a relatively simple and economical construction.
  • one of the reflector parts can also contribute to a function than the one to which it is specifically dedicated.
  • the first function is a code function associated with the first reflector portion
  • the second function is a route function associated with the second reflector portion.
  • one of the functions, in particular the road function may in fact use not only the reflector portion which is dedicated to it, but also the reflector portion more particularly adapted to a code function (when part of the light rays emitted by the source in route function transmits towards both parts of the reflector).
  • the first (or one of) (1.1m) lens portion is convergent type
  • the second (or other) (2.2m) lens portion is convergent or divergent.
  • the portion adapted to a route will be divergent or convergent, that adapted to a code will preferably converge.
  • the meridian plane of separation can be vertical.
  • the two lens portions are placed side by side and joined in the vertical meridian plane, the foci of the two lens portions are shifted transversely, the focus of the code portion being on or adjacent the upper edge of the cache.
  • the light sources are constituted by two filaments of the same lamp, namely a code filament with a cup located on the opposite side to the reflector associated with the filament code, and a filament road free of any cup.
  • They can also be constituted by two lamps. halogen or by two xenon lamps, or by two light-emitting diodes, or by two groups of light-emitting diodes or other lamps. They can also combine two different types of lamp.
  • the two light sources may be two light-emitting diodes or two groups of light-emitting diodes distributed on either side of the virtual meridian plane, whatever the orientation of said meridian plane.
  • the two light sources are two light-emitting diodes disposed on either side of the virtual meridian plane, diodes arranged to be diametrically opposite to one another or inclined relative to each other. The inclination is chosen in particular so that the main light emission axis of one of the diodes diverges from that of the other diode.
  • 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 ° .
  • This angle of inclination is understood as the measurement of 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 main axis of emission of the diode (generally perpendicular to the plane of the support of the diode).
  • the meridian plane of separation may be horizontal.
  • the two lens portions are joined in the horizontal meridian plane, one portion being located above the other.
  • the faces (convex or concave) of the lens portions are turned towards an observer located in front of the projector and the outline of all the two portions seen in elevation recalls that of a number 8 or two truncated / contiguous circles.
  • the light sources can be constituted by two filaments of the same lamp, namely a code filament with cup located on the opposite side to the reflector associated with the filament code, and a filament road free of any cup.
  • the code filament may be located on the inside of the vehicle and the associated portion of the reflector is also located towards the interior of the vehicle.
  • the road filament and the associated portion of the reflector are located towards the outside of the vehicle. (One understands by "inside” the filament among the two which find the closest to the longitudinal axis of the vehicle, once the projector mounted in the vehicle).
  • 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.
  • 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 cover is preferably essentially vertical, in particular transverse.
  • the cover is formed by a substantially horizontal plate, also called folder.
  • the upper face of the plate is advantageously reflective, in particular aluminized.
  • the focus of the code portion of the lens is on the front edge of the plate.
  • the light sources may be located on or in the vicinity of the median line separating the lens portions; the upper part of the reflector for the code function is then advantageously turned upwards by an angle such that its optical axis meets the horizontal mask which is on the axis of the upper portion of the lens.
  • the light sources may be located on or near the optical axis of the upper lens portion.
  • the lower part of the reflector for the road function is then advantageously turned down by an angle such that its optical axis passes below the horizontal cover which is on the axis of the upper portion of the lens.
  • the lower portion of the lens, for the road function may be divergent and the lower part of the reflector, for the road function, is turned down by a relatively small angle.
  • the invention also relates to the vehicle on which is mounted at least one projector described above.
  • FIG.1 drawings we can see a schematic horizontal section of a bifunctional light projector, for a motor vehicle, to ensure a code function and a road function.
  • the projector comprises an ellipsoid-type reflector R comprising two parts R1 , R2 virtually separated by a vertical meridian plane P.
  • the reflector R is in one piece, the portions R1 and R2 being integral with one another but having optical characteristics different.
  • the part R1 admits a first focus 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 is spreading from left to right.
  • Part R2 admits a first focus shifted transversely on the other side of the plane P, that is to say to the right according to Fig.1 , in relation to the direction of propagation of 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, namely the code function, and forms an image of the source L1 at a point Fg to the left of the plane P.
  • the part R2 is assigned to the second function, namely the function route, and forms an image of the source L2 at a point Fd on the right of the plane P.
  • the light sources L1, L2 consist of the two filaments b1, b2 of a double-filament lamp, for example a H4 or DFCS lamp (Double Filament Complex Shape), shown schematically without its glass envelope or its base.
  • An opaque cup C is disposed on the side of the filament b1 remote from the portion R1 of the reflector. In the example of Fig.1 cup C is essentially vertical and prevents light rays from filament b1 from reaching the second reflector portion R2.
  • the sources L1, L2 are shifted in the direction of the average optical axis X-X of the projector.
  • the source L2 is behind the source L1, according to the direction of propagation of the light.
  • the two sources L1, L2 are furthermore offset transversely with respect to the plane P.
  • the double-filament lamp is advantageously a halogen lamp.
  • the light sources L1, L2 as illustrated in FIG. Fig.3 can be constituted by two light-emitting diodes D1, D2 held on either side of the plane P and preferably inclined to illuminate towards 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 to make an angle with respect 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, which amounts here to the same, between the plane P and the main axes of light emission of the diodes, perpendicular to the plane of their respective supports ).
  • diodes are 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 complementary half-spheres.
  • the code function is provided by the single filament b1, while the road function is provided by the filament b2 or by the set of two filaments b1 and b2.
  • the code function is provided by a single diode D1 whereas the route function is provided by the two diodes D1, D2 which are lit simultaneously.
  • the optical means A is located in front of the reflector R, according to the propagation direction of the light, and in front of a mask M located in front of the light sources L1, L2.
  • the cache M shown in elevation on Fig.2 seen from left compared to Fig.1 , intervenes on the light beams essentially by its upper part.
  • the left side of the upper edge has a horizontal segment m0, which is extended on the right by a line segment m1 rising from left to right at a given angle relative to the horizontal, for example 15 °.
  • the two segments m0 and m1 define the code cutoff.
  • the cache M is arranged such that the point Fg, image of the source L1 by R1, is at or near the vertex K of the angle formed by the segments m0, m1.
  • the segment m1 is prolonged, on the right, by a horizontal segment m2 situated above the cutoff line J represented in dashed lines.
  • a descending segment m3 follows the m2 segment.
  • a horizontal segment m4 located below the cutoff line 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 road beam produced by the source L2 and the part R2 is not cut by the cover M.
  • the optical means A comprises a first lens portion 1 and a second lens portion 2 located on either side of the meridian plane P, and respectively associated with the first portion R1 and the second reflector portion R2.
  • the lens portions 1, 2 are convergent, flat convex, the convex face facing away from the reflector, outwardly.
  • the outline of the optical medium A seen in elevation appears on Fig.4 and looks like a figure 8 lying horizontally.
  • the lens portions 1 and 2 may be obtained by cutting two convex planar lenses in a plane orthogonal to the plane face, the two lenses being glued along their cutting plane.
  • both portions 1, 2 may correspond to two areas of a single molded piece of glass or transparent plastic.
  • the outer visible face of 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 the lens portion 1 coincides with the point Fg or close to this point.
  • the lens portion 2 has an optical axis Y2 parallel to X-X and passing through the point Fd.
  • the focus of the lens 2 coincides with Fd or close to this point.
  • the optical means A is in a way formed by a single bi-axis lens which gives the projector, seen by an observer in front, a very original appearance.
  • the distance between the points Fg and Fd determines the separation of the functions. For a 60mm diameter lens, the distance between Fg and Fd can be about 30mm.
  • the point Fd may lie in front of or behind the plane orthogonal to the X-X direction passing through Fg.
  • the filament code b1 is electrically powered so as to illuminate the left part R1 of the reflector.
  • This part consisting of a generally elliptical type surface, forms an image of the filament code at the 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 ) cache M has a conventional cut to form a cutoff projector code, cut V in the example shown for Europe.
  • the example concerns a traffic-type break on the right.
  • the invention also applies to traffic-type cuts on the left (reverse cut) and flat cuts (such as those used for fog lights). In the case of a projector code for the United States of America, the cut would be in the form of a step.
  • the portion of lens 1 opposite point Fg allows the formation of the code beam.
  • the L2 road filament is not powered electrically.
  • the road filament b2 is electrically powered.
  • the filament b1 is also fed.
  • the right part R2 of the reflector forms an image of the road filament at point Fd.
  • the right portion 2 of the lens whose focus is at the point Fd allows the formation of the road beam, essentially of the upper part, which does not undergo a cut.
  • the lower part of the road beam is added to the code beam with covering part of the beams to avoid a hole corresponding to the area of the cache.
  • the bi-axis lens 1.2 is simple to achieve. Just take two conventional elliptical lenses from which you extract the two desired portions.
  • 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 Fig.1 .
  • the first part R1 of the reflector is turned towards the longitudinal axis of the vehicle, that is to say towards the inside, while the second part R2 is turned outwards.
  • the projector located on the left of Fig.5 (left side of the vehicle), has a symmetrical disposition with respect to the longitudinal axis of the vehicle.
  • the first reflector portion R1 providing the code function is located on the right while the portion R2, assigned to the road, is located on the left side of the reflector.
  • the right zone of the system performs the code function while the left zone performs the route function.
  • each element constituting a conventional elliptical type projector comprising a reflector plus a cover plus a lens, is divided into two parts by a vertical meridian plane passing substantially in the vicinity of one of the code or road filaments of the lamp.
  • the two parts are separated in width by a vertical plane.
  • Fig.6 we can see a variant according to which the meridian plane of separation Pm is horizontal so that the two parts of the reflector R1m and R2m are arranged one above the other. It is the same 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 road filament 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 it.
  • the mask Mm is located in a vertical plane between the light sources and the lens portions.
  • the top edge of the Mm cache seen from face ( Fig.7 ), comprises two horizontal segments offset in height, connected by an inclined segment, which corresponds to the V cut of the European code beam.
  • the portion R1m of the reflector is provided to form the image of the filament b1m at a point Fh located at the upper end of the inclined segment of the upper edge of the screen Mm as shown on Fig.7 .
  • the point Fh can be only in the vicinity of the mask Mm.
  • the lower part R2m of the reflector forms the image of the filament b2m at a point Fb situated below ( Fig.7 ) of the Mm cache.
  • the light coming from the reflector R1m and the filament b1m is recovered by the high portion 1m of lens opposite the "V" of the Mm cache cutoff for the code function.
  • the lens portion 1m has its focus located at the point Fh or the vicinity, while the lower portion of the lens 2m has its focus located at the point Fb.
  • Front view, the bi-axis lens 1m, 2m has substantially the appearance of a number 8, the 1m portion being located above the 2m portion.
  • the two filaments b1m and b2m are fed 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 comprises the code part from the b1m filament.
  • the assembly is designed so that the two beams from R2 and R1 have a common range below the horizontal line of cut so that there is no absence of sensitive light or a "hole" in the area in front of the cache.
  • a horizontal reflective plate N preferably an aluminized glass plate or reflectorized on its upper face, which is put in place of the cache M or Mm of the previous examples.
  • the reflective plate N is also called "folding".
  • the face of the N blade which is not reflective may be optionally frosted to prevent the passage of parasitic rays.
  • the blade N has the shape of the cut that is desired for the beam.
  • Fig.10 illustrates an open V-shaped blade turning its tip upwards, for the realization of a European code beam.
  • the upper face 3 is aluminized.
  • Fig.11 illustrates a Na-blade whose upper surface 3a has the shape of the desired cut for a code beam in the United States of America. This shape comprises two horizontal extreme segments 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, more 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 rays such as those which previously fell in the cache M or Mn and which were therefore lost. A gain in non-negligible luminous flux can thus be obtained.
  • the lower portion R2m of the reflector, associated with the road function is inclined downwards by an angle ⁇ with respect to the position of Fig.8 to improve the road function.
  • ⁇ can be for example about 10 °, and can be in particular between 5 and 15 °.
  • Fig.14 shows a variant embodiment in which the filaments b1m, b2m of the light sources are aligned on the optical axis of the upper lens portion 1m.
  • the lower part of the reflector R2m shown in dashed lines corresponds to the inclined position of Fig.13 .
  • This arrangement makes it possible to limit the inclination of the lower part of the reflector to the position shown in full line R2m2 corresponding to an angle of inclination ⁇ less than ⁇ .
  • the angle ⁇ can be less than 10 °.
  • the invention makes it possible to provide two functions, in particular code and route, without having to move a cache and to use, for example, an electromagnet or a mechanism, so that the system is economical.
  • the bi-axis lens constituting the optical means takes an original form while remaining easy to achieve, which is a significant advantage in style.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Optics & Photonics (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)

Claims (18)

  1. Multifunktionsscheinwerfer, insbesondere Bifunktionsscheinwerfer, für Kraftfahrzeuge, mit einem Reflektor (R) vom ellipsoiden oder multiellipsoiden Typ, zwei Lichtquellen oder zwei Lichtquellengruppen (L1, L2), das heißt eine zugeordnete Lichtquelle oder Lichtquellengruppe pro Lichtfunktion, einem vor dem Reflektor angeordneten optischen Mittel (A) und einer zwischen den Lichtquellen und dem optischen Mittel angeordneten Blende,
    wobei der Reflektor zwei durch eine virtuelle Meridianebene getrennte Teile umfasst, die im Wesentlichen in der Nähe wenigstens einer der Lichtquellen verläuft, wobei die beiden Teile des Reflektors unterschiedliche Brennpunkte aufweisen, wobei ein erster Teil des Reflektors auf einer ersten Seite der Ebene liegt und einer ersten Lichtfunktion zugeordnet ist und gegebenenfalls an der zweiten Lichtfunktion mitwirkt, und ein auf der anderen Seite der Meridianebene liegender zweiter Teil des Reflektors der zweiten Lichtfunktion zugeordnet ist,
    wobei
    - der erste Reflektorteil (R1) ein Bild (Fg; Fh) der auf der ersten Seite der Meridianebene (P, Pm) liegenden, ersten Lichtquelle (L1, b1; b1m) auf der Blende oder in deren Nähe bildet,
    - der zweite Reflektorteil (R2) ein Bild (Fd; Fb) der auf der anderen Seite der Meridianebene (P, Pm) liegenden, zweiten Lichtquelle (L2, b2; b2m) bildet, und
    - das optische Mittel (A) einen ersten (1, 1m) und einen zweiten (2, 2m) Linsenabschnitt aufweist, die auf der einen bzw. der anderen Seite der Meridianebene liegen, wobei der erste Linsenabschnitt (1, 1m) eine optische Achse aufweist, die durch das von dem ersten Reflektorteil erzeugte Bild (Fg, Fh) der ersten Lichtquelle verläuft, und wobei der zweite Linsenabschnitt (2, 2m) eine optische Achse aufweist, die durch das von dem zweiten Reflektorteil erzeugte Bild (Fd, Fb) der zweiten Lichtquelle verläuft,
    dadurch gekennzeichnet, dass die Blende von einer im Wesentlichen waagerechten Platte (N) gebildet ist, wobei die Oberseite der Platte (N) reflektierend ist.
  2. Scheinwerfer nach Anspruch 1,
    dadurch gekennzeichnet, dass die erste Lichtfunktion eine dem ersten Reflektorteil (R1, R1m) zugeordnete Abblendlichtfunktion ist, während die zweite Lichtfunktion eine dem zweiten Reflektorteil (R2, R2m) und gegebenenfalls auch dem ersten Reflektorteil (R1) zugeordnete Fernlichtfunktion ist.
  3. Scheinwerfer nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass die Meridiantrennebene (P) vertikal ist, wobei die beiden Linsenabschnitte (1, 2) nebeneinander angeordnet und entlang der vertikalen Meridianebene verbunden sind, wobei die Brennpunkte der beiden Linsenabschnitte in Querrichtung versetzt sind, und wobei sich der Brennpunkt des Abblendlichtabschnitts auf oder in der Nähe des oberen Rands der Blende befindet.
  4. Scheinwerfer nach Anspruch 1 oder 2,
    dadurch gekennzeichnet, dass die Meridiantrennebene (P) horizontal ist und die beiden Linsenabschnitte (1m, 2m) entlang der horizontalen Meridianebene verbunden sind, wobei ein Abschnitt (1m) über dem anderen (2m) liegt.
  5. Scheinwerfer nach Anspruch 4,
    dadurch gekennzeichnet, dass die Vorderseiten der Linsenabschnitte (1m, 2m) zur Vorderseite des Scheinwerfers gerichtet sind und die Kontur der aus den beiden im Aufriss betrachteten Abschnitten bestehenden Einheit einer Acht oder zwei aneinandergefügten, abgestumpften Kreisen gleicht.
  6. Scheinwerfer nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die Lichtquellen (L1, L2) von zwei Glühwendeln ein und derselben Lampe gebildet sind, nämlich einer Abblendlichtwendel (b1; b1m) mit Abschatterblende (C), die sich auf der Seite befindet, die dem der Abblendlichtwendel zugeordneten Reflektor (R1) entgegengesetzt ist, und einer Fernlichtwendel (b2, b2m) ohne Abschatterblende, oder von zwei Halogenlampen oder von zwei Xenonlampen oder von zwei Leuchtdioden oder zwei Leuchtdiodengruppen.
  7. Scheinwerfer nach Anspruch 6,
    dadurch gekennzeichnet, dass die Abblendlichtwendel (b1), da die Meridiantrennebene senkrecht ist, auf der Innenseite des Fahrzeugs liegt und der zugeordnete Teil (R1) des Reflektors ebenfalls auf der Innenseite des Fahrzeug liegt, während das Fernlichtwendel (b2) und der zugeordnete Teil (R2) des Reflektors zur Außenseite des Fahrzeugs hin angeordnet sind.
  8. Scheinwerfer nach Anspruch 6,
    dadurch gekennzeichnet, dass die Abblendlichtwendel (b1m), da die Meridiantrennebene waagerecht ist, mit dem zugeordneten Teil (R1m) des Reflektors auf der oberen Seite der Trennebene liegt, während die Fernlichtwendel (b21m) dem unteren Teil (R2) des Reflektors zugeordnet ist.
  9. Scheinwerfer nach Anspruch 8,
    dadurch gekennzeichnet, dass die Fernlichtwendel (b2m) waagerecht und vorzugsweise parallel, quer oder schräg zur optischen Achse des ihr zugeordneten Linsenabschnitts ist.
  10. Scheinwerfer nach Anspruch 2,
    dadurch gekennzeichnet, dass der Brennpunkt des Abblendlichtabschnitts der Linse sich am vorderen Rand der Platte (N) befindet.
  11. Scheinwerfer nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die nicht reflektierende Seite der Platte (N) matt ist.
  12. Scheinwerfer nach Anspruch 4 oder 5,
    dadurch gekennzeichnet, dass die Lichtquellen (b1m, b2m), da die Linsenabschnitte (1m, 2m) vertikal versetzt sind, auf oder in der Nähe der die Linsenabschnitte trennenden Mittellinie liegen und der obere (R1m) Teil des Reflektors für die Abblendlichtfunktion um einen Winkel (α) solchermaßen nach oben geneigt ist, dass dessen optische Achse auf die horizontale Blende (N) trifft, die sich auf der Achse des oberen (1m) Linsenabschnitts befindet.
  13. Scheinwerfer nach Anspruch 4 oder 5,
    dadurch gekennzeichnet, dass der untere Teil (R2m) des Reflektors für die Fernlichtfunktion, da die Lichtquellen (b1m, b2m) auf oder in der Nähe der optischen Achse des oberen (1m) Linsenabschnitts liegen, um einen Winkel (β) solchermaßen nach unten geneigt ist, dass dessen optische Achse unter der waagerechten Blende (N) verläuft, die sich auf der Achse des oberen (1m) Linsenabschnitts befindet.
  14. Scheinwerfer nach Anspruch 4 oder 5,
    dadurch gekennzeichnet, dass der untere (2m2) Linsenabschnitt für die Fernlichtfunktion divergent ist und der untere Teil des Reflektors für die Fernlichtfunktion um einen relativ kleinen Winkel (γ) nach unten geneigt ist.
  15. Scheinwerfer nach Anspruch 2,
    dadurch gekennzeichnet, dass der erste (1, 1m) Linsenabschnitt konvergent ist, und dass der zweite (2, 2m) Linsenabschnitt konvergent oder divergent ist.
  16. Scheinwerfer nach einem der Ansprüche 1 bis 5,
    dadurch gekennzeichnet, dass die beiden Lichtquellen zwei Leuchtdioden oder zwei Leuchtdiodengruppen sind, die beidseits der virtuellen Meridianebene verteilt sind.
  17. Scheinwerfer nach Anspruch 16,
    dadurch gekennzeichnet, dass die beiden Lichtquellen zwei beidseits der virtuellen Meridianebene angeordnete Leuchtdioden sind, die solchermaßen angeordnet sind, dass sie zueinander gegengleich oder zueinander geneigt sind.
  18. Scheinwerfer nach Anspruch 16 oder Anspruch 17,
    dadurch gekennzeichnet, dass die Dioden solchermaßen angeordnet sind, dass sie bezüglich der virtuellen Meridianebene in einem Winkel von 0° bis 60°, insbesondere von 5° bis 50° geneigt sind.
EP05291092.4A 2004-05-25 2005-05-20 Multifunktions-Scheinwerfer für Kraftfahrzeuge Not-in-force EP1600689B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0405647 2004-05-25
FR0405647A FR2870799B1 (fr) 2004-05-25 2004-05-25 Projecteur lumineux multifonction pour vehicule automobile

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EP1600689A1 EP1600689A1 (de) 2005-11-30
EP1600689B1 true EP1600689B1 (de) 2016-06-08

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WO2009104115A1 (en) * 2008-02-20 2009-08-27 Philips Intellectual Property & Standards Gmbh Automotive front lighting system with adaptive arc shaping
JP5719671B2 (ja) * 2010-11-05 2015-05-20 株式会社小糸製作所 車両用灯具
WO2012176652A1 (ja) * 2011-06-21 2012-12-27 コニカミノルタアドバンストレイヤー株式会社 車両用前照灯
DE102011085315A1 (de) * 2011-10-27 2013-05-02 Automotive Lighting Reutlingen Gmbh Scheinwerferprojektionsmodul für ein Kraftfahrzeug
FR2984456B1 (fr) * 2011-12-19 2015-08-21 Valeo Vision Systeme d'eclairage pour projecteur notamment de vehicule automobile
WO2014130957A1 (en) * 2013-02-25 2014-08-28 Rensselaer Polytechnic Institute Low luminance lighting
US9400090B2 (en) 2013-05-31 2016-07-26 Panasonic Intellectual Property Management Co., Ltd. Light source unit and vehicle front lamp using the light source unit
US9822942B2 (en) 2013-11-12 2017-11-21 Ledil Oy Low-beam headlight element for a vehicle
FR3047940B1 (fr) 2016-02-18 2019-11-01 Koito Manufacturing Co., Ltd. Feu de vehicule
CN108278572A (zh) * 2018-02-23 2018-07-13 重庆舜辉庆驰光电科技有限公司 Led双焦点双光透镜汽车前大灯

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DE3530002C2 (de) * 1985-08-22 1994-05-26 Bosch Gmbh Robert Scheinwerfer-Einheit mit zwei Reflektoren für Kraftfahrzeuge
JPS6486401A (en) * 1987-09-29 1989-03-31 Koito Mfg Co Ltd Head light of vehicle
JPH01232602A (ja) * 1988-03-11 1989-09-18 Koito Mfg Co Ltd 自動車用前照灯
JPH07118208B2 (ja) * 1988-06-28 1995-12-18 株式会社小糸製作所 自動車用前照灯
JP2517368B2 (ja) * 1988-09-27 1996-07-24 株式会社小糸製作所 自動車用前照灯及び自動車用前照灯装置
FR2839139B1 (fr) * 2002-04-25 2005-01-14 Valeo Vision Module d'eclairage elliptique sans cache realisant un faisceau d'eclairage a coupure et projecteur comportant un tel module

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FR2870799A1 (fr) 2005-12-02
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FR2870799B1 (fr) 2007-08-17

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