EP2006604B1 - Optisches Modul für Beleuchtungseinrichtung für Fahrzeuge - Google Patents

Optisches Modul für Beleuchtungseinrichtung für Fahrzeuge Download PDF

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Publication number
EP2006604B1
EP2006604B1 EP08158436A EP08158436A EP2006604B1 EP 2006604 B1 EP2006604 B1 EP 2006604B1 EP 08158436 A EP08158436 A EP 08158436A EP 08158436 A EP08158436 A EP 08158436A EP 2006604 B1 EP2006604 B1 EP 2006604B1
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EP
European Patent Office
Prior art keywords
module according
module
optical axis
transparent block
folder
Prior art date
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Application number
EP08158436A
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English (en)
French (fr)
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EP2006604A1 (de
Inventor
David Bourdin
Pierre Albou
Christian Kulig
Benoît Reiss
Jonathan Blandin
Vanesa Sanchez
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Valeo Vision SAS
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Valeo Vision SAS
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Publication of EP2006604A1 publication Critical patent/EP2006604A1/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
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/689—Flaps, i.e. screens pivoting around one of their edges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/10—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source
    • F21S41/14—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by the light source characterised by the type of light source
    • F21S41/141—Light emitting diodes [LED]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device
    • F21S41/145—Light emitting diodes [LED] the main emission direction of the LED being parallel to the optical axis of the illuminating device the main emission direction of the LED being opposite to the main emission direction 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/275—Lens surfaces, e.g. coatings or surface structures
    • 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
    • F21S41/28—Cover glass
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S41/00—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/285—Refractors, transparent cover plates, light guides or filters not provided in groups F21S41/24 - F21S41/2805
    • 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
    • F21S41/321—Optical layout thereof the reflector being a surface of revolution or a planar surface, e.g. truncated
    • 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
    • F21S41/322—Optical layout thereof the reflector using total internal reflection
    • 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
    • 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
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F21S41/686—Blades, i.e. screens moving in a vertical plane
    • 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
    • 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
    • F21S41/17—Discharge light sources
    • F21S41/172—High-intensity discharge 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/255—Lenses with a front view of circular or truncated circular outline
    • 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
    • F21S41/68—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens
    • F21S41/683—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by a variable light distribution by acting on screens by moving screens
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/04—Combinations of only two kinds of elements the elements being reflectors and refractors
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V13/00—Producing particular characteristics or distribution of the light emitted by means of a combination of elements specified in two or more of main groups F21V1/00 - F21V11/00
    • F21V13/02—Combinations of only two kinds of elements
    • F21V13/10—Combinations of only two kinds of elements the elements being reflectors and screens
    • 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 present invention relates to an optical module for automobile lighting device of the projector type. It applies more particularly to optical modules called elliptical modules comprising a light source associated with a reflector and closed by a dioptric element of the convergent lens type, for example a plano-convex lens, Fresnel lens.
  • the invention is also concerned with optical modules equipped with a fixed or movable cover able to intercept at least partially, depending on its position, the light beam emitted by the light source / reflector assembly.
  • the shape of the upper edge of the cache makes it possible to define the desired cut in the beam by imaging with the convergent lens.
  • the mobile cover on command and thanks to the presence of a motor, can take different positions with respect to the light source, including at least one position called “active" optically, that is to say a position where it obscures actually a part of the light beam, in particular for the module to emit a cut-off beam, such as a crossing beam (part of the cut being oblique) or anti-fog (with a horizontal cut).
  • active optically that is to say a position where it obscures actually a part of the light beam, in particular for the module to emit a cut-off beam, such as a crossing beam (part of the cut being oblique) or anti-fog (with a horizontal cut).
  • the cache may thus have one or more "active" positions, for example two, one for the traffic crossing function on the right and one for the traffic function on the left, and also a so-called “passive” function where it does not block the beam. light, thus allowing the module to emit light beams without cutoff of the road beam type.
  • active positions for example two
  • passive where it does not block the beam. light
  • the document US 4,914,747 discloses a lighting device for a projector type vehicle with a screen positioned between the light source and a dioptric element, the screen comprises a reflective block.
  • the aim of the invention is an optical module, for example an elliptical module, which offers improved optical performance, and more particularly improved performance in the context of the emission of an uninterrupted beam of the road type.
  • reflective coating is meant a reflective layer which can be deposited, for example by a vacuum deposition technique, on the upper face of the transparent block, or which can be attached to this face by any means. (This coating is advantageously reflecting on at least one of its faces, particularly its upper face once the folder in the mounting position, and in particular reflecting on both sides.)
  • the invention proposes here a new design of "folding" which is very advantageous: the "active" part of the folder, that is to say the reflective coating, being supported by this transparent block which does not interfere, or very little, with the light rays emitted by the source, or on the contrary which interferes in a controlled manner with these rays, one can eliminate the parasitic effects of a support which would be, for example, of metal.
  • the optical module is intended to emit at least one road-type uninterrupted beam, the upper face of the deflecting bender upwards at least some of the rays emitted by the source and / or reflected by the reflector in order to increase the maximum intensity of said beam.
  • the module can therefore be simply a single function module: a road module only.
  • the transparent block is disposed substantially perpendicular to the optical axis of the module, symmetrically with respect to this axis.
  • At least a portion of at least one of the right, left, front or rear side walls of the transparent block is made opaque, or diffusing, in particular by local metallization or by frosting or by association with an occulting element.
  • the transparent block may have right, left, front and rear side walls parallel to each other: this is its simplest embodiment.
  • the transparent block may also have a hexahedron shape, that is to say six-sided polyhedron, whose volume is delimited by two parallel rectangular faces and four trapezoidal lateral faces.
  • the transparent block may have a flat upper face: this is its simplest embodiment. But it can also be envisaged that it is at least locally curved, especially along length. Again, this is a parameter that can be used to influence the photometric distribution of the emitted beam.
  • the module is a multi-module, in particular two functions.
  • it also comprises a cover, which is arranged between the folder and the dioptric element: the cover is in particular mounted movably between at least one optically active position and a retracted position.
  • the optically active position of the cache corresponds to the emission by the module of a cut-off beam, in particular of the code type, and its retracted position corresponds to the emission by the module of an uninterrupted beam, in particular of the road type. It may then be preferable that the cover be able to make the folder at least partially ineffective optically when it is in the optically active position.
  • An “optically active position” is understood to mean a position of the cache such that it intercepts a portion of the rays emitted directly by the source or reflected by the reflector.
  • the cover has, in the optically active position, its upper edge at a height such as that of the upper face of the block of the folder that it intercepts a part of the rays reflected by the upper face. reflective coating thereof.
  • the dioptric element is in particular a lens.
  • the light source equipping the module may be a filament lamp, or a xenon arc lamp, or a light emitting diode or a group of light emitting diodes.
  • the invention also relates to a motor vehicle headlight which comprises an optical module as described above.
  • front, “back”, “up”, “down”, “upper” or “lower” is understood throughout the present text according to the position of the module once integrated, possibly in a projector, and mounted on a vehicle in normal operating mode. It is recalled that the module is arranged, once mounted in the projector and then in the vehicle, and as shown in the following figures, so that its optical axis is contained in a substantially horizontal plane (substantially, because the module can be adjusted, in fact, so that its optical axis is slightly inclined, especially downwards, less than 2 °).
  • optical axis means a dimension measured along the optical axis
  • width is a dimension measured horizontally perpendicular to the optical axis
  • height is a dimension measured vertically perpendicular to the optical axis.
  • a module according to the prior art, of the elliptical kind which comprises, arranged on an optical axis X, a reflector R of the ellipsoidal genus receiving a light source S, then a lens L convex plane type .
  • the module is here a module intended to emit a road beam only.
  • the light source S is of any suitable type. In this case, it is a halogen lamp.
  • the source S is at the first focus of the reflector R.
  • the convergent lens L has a focus substantially coincident with the second focus of the reflector R.
  • the light rays r1, r2, r3, r4 emitted by the light source S are sent towards the lens L either directly or after reflection on the wall of the reflector R.
  • the rays emerging from the lens L then form a light beam.
  • the rays represented in dotted lines are the average radii passing through the second focus of the reflector.
  • the figure 2 is a longitudinal section of a modified elliptical road module according to the invention (in all the figures, the same references represent the same components).
  • the only modification with respect to the module according to the preceding figure is the presence of an additional optical element, the folder P, in the vicinity of the second focus of the reflector R.
  • This folder consists of a block B of transparent material, of parallelepiped shape , oriented perpendicularly to the optical axis X in a substantially vertical plane.
  • a reflective coating Re which is here a deposit of aluminum, vacuum deposited from a thickness of less than one micron to tens of microns. Its upper face is located on the optical axis X of the module, or in its vicinity, being preferably located under the optical axis X, for example about 2 mm below the optical axis X.
  • the paths of the four limit radii r'1, r'2, r'3 and r'4 have changed: the radius r'1 reaches the coating Re coming from the lower part of the reflector, it is deflected down and then returned in the lens to contribute to the lower part of the beam.
  • the radius r'2 successively crosses the two side walls of the glass block B: it emerges from B in the same orientation with which it had entered.
  • the radius r'4 strikes the reflective coating Re coming from the upper part of the reflector R: it is deflected upwards before passing through the lens L and contributing to the upper part of the beam.
  • the radius r'3 passes over the folder P and is not affected.
  • the figure 3 is an isolux of the road beam obtained with the module according to the prior art of the figure 1 : Its maximum illumination is 113 Lux at 25 meters, for a total flow of 1616 lumen.
  • the maximum iso illumination curve Cmax represented on the figure 3 corresponds to a level of 64 Lux.
  • the figure 4 is an isolux of the module according to the invention of the figure 2 . Its maximum illumination is 170 Lux at 25 meters for a total flow of 1610 lumens.
  • the maximum illumination iso curve Cmax 'represented on the figure 4 corresponds to a level of 128 Lux.
  • the folder therefore has a very beneficial effect on the maximum light intensity values of a road beam. And this advantage is much greater than the slight loss of induced flux (which is due in particular to the fact that there are losses in r'2 type rays, which pass through the glass block, and the losses also suffered by the rays deviated by the reflective coating, which is not 100% reflective but also a little absorbent).
  • the figure 5 shows a variant of folder according to the invention: the wall "most downstream" of the block B relative to the optical axis X of the module is provided in the lower part of a coating B1 opacifier.
  • This coating can replace, in the lower part, the static cover Cs mentioned above. It can also make it possible to improve or to adjust more precisely the light distribution of the beam.
  • the figure 6 shows a second module variant according to the invention: the only difference with the variant according to the figure 2 is the fact that here the light source S is not a filament lamp but a light-emitting diode, whose emitting surface is turned in the opposite direction to that of the optical axis X: the rays emitted in a half-plane are reflected by the reflector, then some of them, either coming from above or from below, are deflected by the folder according to the same principle as figure 2 .
  • the light source S is not a filament lamp but a light-emitting diode, whose emitting surface is turned in the opposite direction to that of the optical axis X: the rays emitted in a half-plane are reflected by the reflector, then some of them, either coming from above or from below, are deflected by the folder according to the same principle as figure 2 .
  • the light source S is not a filament lamp but a light-emitting diode, whose emitting
  • the Figures 7, 8 and 9 relate to a third module variant according to the invention: a bi-function module code / route.
  • the source is a xenon lamp.
  • the reflector R is a little different, including a lower part "flat" because less useful optically than in previous cases.
  • a mobile cover C arranged between the folder P and the lens L, in the immediate vicinity of the folder P. The figures show it in different positions.
  • the cache C (which is in fact a double cache, of approximately V-shaped section, as described for example in the patent FR 07 01290 filed on February 22, 2007 ) is in the up position, an optically active position capable of creating, according to the shape of its upper edge, the code-type cut in the beam, in a known manner (it is clear that the cache C can define any other appropriate cutoff profile).
  • the reflecting surface Re of the folder P is in the immediate vicinity of the optical axis of the projector, under the upper edge of the cover C in its optically active position.
  • the folder according to the invention is static, and is not secured to the cache, although in its immediate vicinity, in front of it.
  • the movement of the cover is achieved by any appropriate means, in particular with the aid of an electric motor controlled by a control panel or automatically, or by any appropriate manual means.
  • the bi-function module can be coupled with an automatic switching device from one type of beam to another, such as that described in the patent. FR 2,877,892 .
  • the Z axis is a vertical axis, or slightly inclined to the vertical in the case of a slight inclination of the optical axis X relative to the horizontal due to a range correction performed on the module once in place on the vehicle.
  • At least one of the front faces F in or rear F out of the transparent block constituting the folder P can be inclined relative to to the Z axis. More precisely, the rear face F in can be inclined towards the rear of the angle ⁇ in , and the front face F out can be inclined towards the front of the angle ⁇ out .
  • angles ⁇ in and ⁇ out formed respectively by the rear faces F in and before F out with the Z axis are advantageously between 5 ° and 30 °, the angle ⁇ in being less than or equal to the angle ⁇ out .
  • angles ⁇ in and ⁇ out equal to each other and to the value 17 ° are chosen, the angles ⁇ in and ⁇ out being measured from the Z axis.
  • the folder P therefore constitutes a transparent block symmetrical with respect to the axis Z, hexahedron-shaped.
  • the upper face F top of this volume has for example a width W top of about 6 mm, and a length D top of between 2 mm and 10 mm, and preferably equal to about 5 mm.
  • the rear faces F in and front F out being inclined in this way, the length of the lower face F bottom of the folder P is lower than that D top of the upper face F top .
  • the folder P then behaves like a deviating prism. In this way, some of the rays passing through the transparent block constituting the folder may be deviated to improve the quality and / or homogeneity of the light beam leaving the module.
  • FIG 12 represents an isolux of the module according to the embodiment of the invention on the Figures 10A and 10B .
  • the maximum illumination is 163 Lux at 25 meters for a total flow of 1610 lumens.
  • the curve iso maximum illumination Cmax "shown on the figure 12 corresponds to a level of 128 Lux.
  • the inclination of the faces F in and F out of the folder therefore has a very beneficial effect on the maximum light intensity values of a road beam.
  • At least one of the rear faces F in and before F out of the transparent block may be curved, in particular at least partially concave, as has been represented on the figure 11C .
  • the angle ⁇ out that the output face F out forms with the Z axis is greater than the angle ⁇ in which the input face F in forms with the Z axis.
  • the figure 11C still represents an alternative embodiment of the transparent block constituting the folder P, in which the rear end and front end are this time curved: they are both concave, with a radius of curvature of about 35mm. Preferably, their radius of curvature is between 20 and 50 mm, in particular between 30 and 40 mm. It can also be provided that only the front face F out is concave, and that the rear face F in remains flat, in a vertical or inclined plane. The appropriate curvature of a face or faces of the transparent block makes it possible to deviate the rays in a controlled manner, as explained above.
  • the lateral faces F left and F right not be parallel, but to make an angle with the axis Z.
  • the lateral faces F left and F right will have the same inclination, so that that the block transparent retains symmetry with respect to a vertical plane passing through the optical axis X.
  • Such a design has the advantage of not introducing a lack of homogeneity on the sides of the beam: one notices in fact on the figure 4 that a transparent parallelepipedic block such as B whose upper face has a width extending over substantially the entire width of the module transversely to the optical axis generates defects of homogeneity on the beam. More precisely, as can be seen on the figure 4 , the different isolux each have a "throttle" on either side of the optical axis X, just above the horizontal, for values of the opening angle of about 30%.
  • the transparent block has an upper face whose width W top is restricted with respect to the total width of the system and reduced with respect to the width W bottom of the lower face, its main vocation being to act locally only in the vicinity of the zone of maximum concentration. It can be seen that the lateral defects described above no longer appear on the isoluxes of the figure 12 .

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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 (19)

  1. Optikmodul (M) für eine Kraftfahrzeugbeleuchtungsvorrichtung, mit
    - einem eine optische Achse (X) definierenden Reflektor (R),
    - einem dioptrischen Element (L),
    - einer zwischen dem Reflektor und dem dioptrischen Element angeordneten Lichtquelle (S),
    - einer zwischen der Lichtquelle und dem dioptrischen Element angeordneten Ablenkfläche (P), die einen lichtdurchlässigen Block (B) umfasst, dessen obere Fläche (Ftop) wenigstens zum Teil mit einer reflektierenden Beschichtung (Re) versehen ist.
  2. Modul nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet, dass es zur Abgabe von wenigstens einem Lichtbündel ohne Hell-Dunkel-Grenze vom Typ Fernlicht bestimmt ist, wobei die obere Fläche (Ftop) der Ablenkfläche (P) wenigstens einige der von der Lichtquelle emittierten und/oder vom Reflektor (R) reflektierten Strahlen nach oben ablenkt, um die maximale Intensität des Lichtbündels zu erhöhen.
  3. Modul nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass der lichtdurchlässige Block (B) im Wesentlichen senkrecht zur optischen Achse (X) des Moduls (M) und symmetrisch zu dieser Achse (X) angeordnet ist.
  4. Modul nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet, dass wenigstens ein Teil wenigstens einer rechten (Fright), linken (Fleft), vorderen (Fin) oder hinteren (Fout) Wand des lichtdurchlässigen Blocks (B) lichtundurchlässig oder lichtstreuend gemacht ist, insbesondere durch lokales Metallisieren (B1) oder durch Mattieren oder in Verbindung mit einem Abschattungselement.
  5. Modul nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass der lichtdurchlässige Block (B) rechte (Fright), linke (Fleft), vordere (Fin) oder hintere (Fout) Wände hat, die zueinander parallel sind, oder dass wenigstens eine dieser Wände (Fright, Fleft, Fin, Fout) gekrümmt ist.
  6. Modul nach einem der Ansprüche 1 bis 4,
    dadurch gekennzeichnet, dass der lichtdurchlässige Block (B) die Form eines Hexaeders hat, dessen Umfang von zwei parallelen rechteckigen Flächen (Ftop, Fbottom) und vier trapezförmigen seitlichen, vorderen und hinteren Flächen (Fin, Fleft, Fout, Fright) begrenzt ist.
  7. Modul nach Anspruch 6,
    dadurch gekennzeichnet, dass wenigstens eine der Flächen (Ftop, Fbottom, Fin, Fleft, Fout, Fright) des Hexaeders konvex oder konkav gekrümmt ist.
  8. Modul nach Anspruch 6,
    dadurch gekennzeichnet, dass die parallelen rechteckigen Flächen (Ftop, Fbottom) zur optischen Achse (X) parallel sind.
  9. Modul nach Anspruch 6,
    dadurch gekennzeichnet, dass wenigstens eine der vorderen oder hinteren Flächen (Fin, Fout) unter einem Winkel zwischen 5° und 30° zur Lotrechten (Z) auf die optische Achse (X) geneigt ist.
  10. Modul nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet, dass die vordere oder hintere Fläche (Fin, Fout) unter einem Winkel von 17° zur Lotrechten (Z) auf die optische Achse (X) geneigt ist.
  11. Modul nach Anspruch 6,
    dadurch gekennzeichnet, dass die seitlichen Flächen (Fleft, Fright) zur Lotrechten (Z) auf die optische Achse (X) geneigt sind, wobei die Breite (Wtop) der oberen Fläche (Ftop) kleiner gleich der Breite (Wbottom) der unteren Fläche (Fbottom) ist.
  12. Modul nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass der lichtdurchlässige Block (B) einen ebenen oder wenigstens lokal gekrümmten oberen Rand (Bs) hat.
  13. Modul nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass es ferner eine zwischen der Ablenkfläche (P) und dem dioptrischen Element (L) angeordnete Blende (C) umfasst.
  14. Modul nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet, dass die Blende (C) zwischen wenigstens einer optisch wirksamen Stellung und einer abgesenkten Stellung beweglich angebracht ist.
  15. Modul nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet, dass die optisch wirksame Stellung der Blende (C) der Abgabe eines Lichtbündels mit Hell-Dunkel-Grenze, insbesondere vom Typ Abblendlicht, durch das Modul entspricht, und dass ihre abgesenkte Stellung der Abgabe eines Lichtbündels ohne Hell-Dunkel-Grenze, insbesondere vom Typ Fernlicht, durch das Modul entspricht.
  16. Modul nach dem vorhergehenden Anspruch,
    dadurch gekennzeichnet, dass die Blende (C) die Ablenkfläche (P) wenigstens zum Teil optisch unwirksam macht, wenn sie in der optisch wirksamen Stellung ist.
  17. Modul nach einem der vorhergehenden Ansprüche 14 bis 16,
    dadurch gekennzeichnet, dass sich der obere Rand der Blende (C) in der optisch wirksamen Stellung in einer solchen Höhe befindet, dass dadurch bezogen auf die Höhe der oberen Fläche (Ftop) des Blocks (B) der Ablenkfläche (P) ein Teil der von der Oberseite ihrer reflektierenden Beschichtung (Re) reflektierten Strahlen abgeschirmt wird.
  18. Modul nach einem der vorhergehenden Ansprüche,
    dadurch gekennzeichnet, dass die Lichtquelle (S) eine Glühlampe oder eine Lichtbogenlampe vom Typ Xenon oder eine Leuchtdiode oder eine Leuchtdiodengruppe ist.
  19. Kraftfahrzeugscheinwerfer,
    dadurch gekennzeichnet, dass er ein Optikmodul (M) nach einem der vorhergehenden Ansprüche umfasst.
EP08158436A 2007-06-18 2008-06-17 Optisches Modul für Beleuchtungseinrichtung für Fahrzeuge Active EP2006604B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR0704332A FR2917484B1 (fr) 2007-06-18 2007-06-18 Module optique pour dispositif d'eclairage automobile

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EP2006604A1 EP2006604A1 (de) 2008-12-24
EP2006604B1 true EP2006604B1 (de) 2010-06-16

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FR2950672B1 (fr) * 2009-09-29 2012-11-16 Valeo Vision Module optique avec plieuse formee par un dioptre materiau transparent / air
FR2962785B1 (fr) 2010-07-19 2014-11-21 Valeo Vision Plieuse sur lame transparente avec depouille
FR2962784B1 (fr) * 2010-07-19 2015-01-16 Valeo Vision Reflecteur du type elliptique corrige
CN105588061B (zh) * 2016-02-29 2018-02-06 上海小糸车灯有限公司 汽车前照灯远近光一体发光二极管pes单元
CN110553213B (zh) * 2018-06-01 2022-01-07 深圳市绎立锐光科技开发有限公司 光源模组

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Publication number Priority date Publication date Assignee Title
JPH07118208B2 (ja) * 1988-06-28 1995-12-18 株式会社小糸製作所 自動車用前照灯
US5938323A (en) * 1996-05-24 1999-08-17 Cooper Automotive Products, Inc. Projector light assembly
FR2754039B1 (fr) 1996-10-02 1998-12-18 Valeo Vision Projecteur du genre elliptique pour vehicule automobile, comportant un cache de coupure perfectionne, et procede de fabrication du cache
FR2815310B1 (fr) 2000-10-12 2003-02-21 Valeo Vision Projecteur pour vehicule automobile a ecran d'occultation mobile
GB2381653A (en) 2001-11-05 2003-05-07 Shimadzu Res Lab Europe Ltd A quadrupole ion trap device and methods of operating a quadrupole ion trap device
FR2847655B1 (fr) 2002-11-21 2005-03-04 Valeo Vision Projecteur elliptique pour vehicule automobile emettant des faisceaux d'eclairage differents
KR101224265B1 (ko) * 2004-04-08 2013-01-18 페더럴-모걸 코오포레이숀 색수차를 보정한 투사형 램프 전조등
FR2877892B1 (fr) 2004-11-18 2008-05-30 Valeo Vision Sa Procede et dispositif de commande de commutation automatique de projecteur d'eclairage
FR2888916B1 (fr) * 2005-07-21 2007-09-28 Valeo Vision Sa Module optique pour dispositif d'eclairage automobile
FR2913094B1 (fr) 2007-02-22 2009-05-15 Valeo Vision Sa Projecteur pour vehicule automobile.

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DE602008001530D1 (de) 2010-07-29
EP2006604A1 (de) 2008-12-24
FR2917484B1 (fr) 2009-10-02
ATE471487T1 (de) 2010-07-15
FR2917484A1 (fr) 2008-12-19

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