EP2743567A1 - Optisches Hauptelement, Beleuchtungsmodul und Scheinwerfer für Kraftfahrzeug - Google Patents

Optisches Hauptelement, Beleuchtungsmodul und Scheinwerfer für Kraftfahrzeug Download PDF

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Publication number
EP2743567A1
EP2743567A1 EP13196380.3A EP13196380A EP2743567A1 EP 2743567 A1 EP2743567 A1 EP 2743567A1 EP 13196380 A EP13196380 A EP 13196380A EP 2743567 A1 EP2743567 A1 EP 2743567A1
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EP
European Patent Office
Prior art keywords
optical element
light
primary optical
guide
face
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.)
Granted
Application number
EP13196380.3A
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English (en)
French (fr)
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EP2743567B1 (de
Inventor
Marine Courcier
Pierre Albou
Vanesa Sanchez
Antoine De Lamberterie
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Valeo Vision SAS
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Valeo Vision SAS
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Publication of EP2743567A1 publication Critical patent/EP2743567A1/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]
    • F21S41/143—Light emitting diodes [LED] the main emission direction of the LED being parallel 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
    • 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]
    • F21S41/151—Light emitting diodes [LED] arranged in one or more lines
    • 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
    • F21S41/24—Light guides
    • 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
    • F21S41/20—Illuminating devices specially adapted for vehicle exteriors, e.g. headlamps characterised by refractors, transparent cover plates, light guides or filters
    • F21S41/25—Projection lenses
    • F21S41/26—Elongated lenses

Definitions

  • the technical field of the invention is that of lighting modules for motor vehicles.
  • a motor vehicle is equipped with headlamps, or headlights, intended to illuminate the road in front of the vehicle, at night or in the case of reduced luminosity.
  • headlamps can generally be used in two lighting modes: a first mode “high beam” and a second mode “low beam”.
  • the "high beam” mode provides strong illumination of the road far ahead of the vehicle.
  • the "low beam” mode provides more limited road lighting, but still offers good visibility without dazzling other road users.
  • These two lighting modes are complementary.
  • the driver of the vehicle must manually switch modes depending on the circumstances, at the risk of inadvertently dazzle another user of the road. In practice, changing the lighting mode manually can be unreliable and sometimes dangerous.
  • the dipped beam mode provides visibility sometimes unsatisfactory for the driver of the vehicle.
  • ADB Adaptive Driving Beam
  • Such an ADB function is intended to automatically detect a user of the road likely to be dazzled by a beam of light emitted in headlight mode by a projector, and to modify the outline of this beam of light in a manner to create a shadow zone at the location of the detected user.
  • the advantages of the ADB function are multiple: comfort of use, better visibility compared to a lighting in dipped beam mode, better reliability for the change of mode, risk of dazzling greatly reduced, driving safer.
  • each LED enters the associated light guide and is emitted from an outlet end of the guide, rectangular in shape, to the associated secondary optical element.
  • the light emitted by each optical guide exit end and projected by the secondary optical element forms a vertical light segment at the front of the vehicle.
  • the light segments produced overlap partially in the horizontal direction.
  • the LEDs can be switched on independently of each other, selectively, to obtain the desired illumination.
  • each light guide undergos refraction at the interface between the output surface of the guide and the surrounding medium (that is to say the air).
  • This has the effect of strongly spacing the rays of the optical axis of the secondary optical element.
  • part of the rays emitted by the exit surface of each light guide does not penetrate into the associated secondary optical element.
  • Such a lighting system does not provide good quality imaging.
  • the present invention improves the situation.
  • the invention relates to a primary optical element for a motor vehicle lighting module, comprising a plurality of light guides, characterized in that the light guides are connected at the output to a corrective part comprising a face of light. at least partially dome-shaped substantially spherical outlet, the light guides and the corrective part forming a monobloc structure.
  • substantially spherical dome is meant a surface whose shape at least partially matches that of a sphere.
  • the corrective part is defined at least by an exit face having at least one spherical portion.
  • the light rays are not or little deviated due to the substantially spherical dome shape of the output face of this corrective part.
  • the one-piece structure ensures an excellent connection between the guides and the corrective part of the primary optical element.
  • the optical efficiency is greatly improved.
  • the respective refractive indices of the light guides and the corrective part are substantially identical.
  • substantially identical refractive indices equal to one hundredth.
  • the light guides and the corrective part are made of the same material.
  • the light guides and the corrective part are from the same polymer.
  • the light guides and the corrective part are made from materials that are at least base polymer, for example PMMA. However, these materials may have different charges.
  • the substantially spherical dome-shaped exit face is centered substantially at the exit of one of the light guides.
  • the rays issuing from a guide substantially at the center of the sphere enveloping the corrective portion are normal to the outlet face thereof and are therefore not deviated to the interface between the corrective part and the surrounding air .
  • the spokes emerging from an eccentric guide are for their part slightly deviated to the exit interface.
  • the corrective part has substantially the shape of a half-sphere.
  • the exit face has a half-spherical shape over its entire surface.
  • the exit face is constituted by the spherical portion, this spherical portion extending over the entire surface of the exit face.
  • the corrective portion may be a truncated ball portion, i.e., cut on either side of the spherical portion formed on the exit face.
  • the exit face is constituted by the spherical portion, this spherical portion extending over the entire surface of the exit face.
  • the exit face may comprise at least one portion adjacent to the spherical portion, the adjacent portion extending from the spherical portion to the rear of the corrective portion according to a progressive radius of curvature. If necessary, the radius of curvature gradually decreases.
  • At least one light guide has a face, upper or lower, having a cylindrical portion shape.
  • the curved shape, in a portion of a cylinder, of the upper or lower face of the guide, contributes to concentrating the light intensity in an area, respectively higher or lower, of the secondary light source output of the guide.
  • the entrance face of at least one light guide comprises a convex portion.
  • the entry face of at least one light guide comprises a concave portion.
  • the input face of said light guide extends at least partially in a plane inclined to the vertical by an angle between 0 ° and 45 °.
  • said plane is inclined at an angle between 10 ° and 30 °.
  • At least one light guide comprises at least one spreading face, said spreading face being shaped so as to widen the cross section of the guide from its input face to its exit
  • the widening, low or high, of the guide makes it possible to spread the light at the bottom or the top of the secondary light source at the exit of the guide.
  • the light guides being juxtaposed two by two along a line, one of the two end guides of said line comprises a side spreading face.
  • the guides can all be aligned along a single line.
  • the guides may be arranged along at least two lines, at least one of the lines being disposed below another of the lines.
  • each guide of at least one of the lines can be arranged exactly below a guide of another of the lines.
  • each guide of at least one of the lines may be disposed below, laterally offset, from one guide to another of the lines.
  • the lateral enlargement of the guide allows the light to be spread on the side of the secondary light source at the exit of the guide.
  • an area of the output face of the corrective part has a radius of curvature which gradually decreases.
  • said zone of the exit face is a lateral, lower or upper zone.
  • the invention also relates to an optical assembly comprising the primary optical element as defined above and a plurality of light sources, each source being associated with a single guide.
  • the invention also relates to an optical lighting module for a motor vehicle headlamp, characterized in that it comprises a plurality of light sources, a primary optical element as previously defined and an associated projection optical element, the outputs of guides of the primary optical element being positioned in an object focal plane of the projection lens.
  • the invention also relates to a motor vehicle headlight, characterized in that it comprises at least one optical module as previously defined, including several optical modules.
  • An orthogonal three-dimensional coordinate system is also represented on the figure 1 , the z axis corresponding to the vertical.
  • the Figures 1 to 3 represent an optical lighting module, in operational position, intended to equip a motor vehicle headlamp, according to a first embodiment.
  • the Figures 1, 2 and 3 respectively represent a perspective view, a top view, in the direction ZZ ', and a side view, in the direction XX', of the optical module.
  • the front of the module designates the part to the right of the figure 1 and the back of the module to the left.
  • the primary light sources 1a-1d are, in the particular example described here, light emitting diodes, or LEDs. However, LEDs could be replaced by other light sources.
  • the primary optical element 2 comprises a number N of light guides, also called waveguides or optical guides, referenced 3a-3d, respectively associated with the N primary light sources 1a-1d, and a corrective part 4.
  • the N light guides 3a-3d are connected, connected at the output to the rear of the corrective part 4, the whole forming a monobloc structure.
  • monobloc structure is meant that the elements of the structure (here the guides 3a-3d and the corrective part 4) are not separable without destruction of at least one of the elements.
  • the number N of guides is equal to four. Of course, this number could be greater or less than four. It is, however, preferably strictly greater than one.
  • the corrective part 4 is a sphere portion, or a ball portion, centered on the outlet of one of the guides, here the guide 3b. More specifically, in the particular example of Figures 1 to 3 , the corrective part 4 is a half-ball whose center is situated in the exit plane of the guide 3b and on the optical axis 6. In a variant, the exit plane of the guide 3b could be substantially offset with respect to the center of the sphere of a distance less than or equal to 10% of the value of the radius of the sphere, preferably along the optical axis 6.
  • the front surface 41 of the corrective part 4, in the form of a spherical dome or spherical portion constitutes an exit front face.
  • the rear 40 of the corrective part 4 extends here in the cutting plane of the half-sphere. It could however have any shape, provided to ensure the connection with the outputs of the guides 3a-3d and not to change the path of the rays from the output ends of the guides and propagating in the corrective part 4.
  • the corrective part may be a truncated ball portion, that is to say cut off on each side of the spherical portion formed on the exit face.
  • it may be formed of the first and second ball portions, adjacent to the peripheral portion, and which extend along a progressive radius of curvature until reaching the rear 40 of the corrective portion 4.
  • the light guides 3a-3d and the corrective part 4 are made of the same material and have the same refractive index.
  • the guides 3a-3d and the corrective part 4 are made of the same material or are derived from the same polymer. If they come from the same polymer, the guides may have a charge different from that of the corrective part 4.
  • the guides may be manufactured in PMMA-HT (English Polymethyl MethAcrylate High Temperature - high temperature polymethyl methacrylate) with a refractive index of 1.490 and resistant to high temperatures, and the PMMA-8N corrective part having a refractive index equal to 1.491 and less expensive.
  • blind refractive index is meant that the refractive index of the guides 3a-3d and that of the corrective part 4 are equal to the nearest hundredth.
  • the material constituting the guides 3a-3d and the corrective part 4 is transparent. This is a material for an optical lens, such as an organic material or possibly glass.
  • 3a-3d light guides allows more tolerance in the positioning of light sources 1a-1d. This avoids the need to accurately position the light sources 1 to 1 d relative to each other.
  • each guide 3a (3b-3d) extends along a longitudinal axis crossing the input face 30a (30b-30d) at its center, and the output 31a (31b-31d).
  • the guides 3a-3d could comprise a sheath surrounding the interior of the guide, the light being intended to propagate inside the guide by successive total reflections on an inner wall of the sheath.
  • each guide 3a (3b-3d) (that is to say transverse to the optical axis of the guide) here has a shape of parallelogram, and more precisely rectangle.
  • the cross section of the guides could be of any shape. It could for example include curved sides. In any case, it is adapted to produce a desired form of light beam at the output of the optical module.
  • the outputs 31a-31d of guides are secondary light sources for producing respective light beams at the output of the optical module. These light beams have generally rectangular shapes in cross section (that is to say transverse to the optical axis 6).
  • the respective axes of the guides 3a-3d extend horizontally and orthogonally to the cutting plane of the half-sphere of the corrective part 4.
  • the N guides 3a-3d are here juxtaposed and form a horizontal row.
  • the guides could be juxtaposed two by two along any line, straight or curved. They could for example be arranged in a fan.
  • each guide 3a (3b-3d) is here flat and vertical. It is positioned facing (that is to say at right) a primary light source 1a (1b-1d), the light emitted by it being intended for penetrate at least partially into the associated guide 3a (3b-3d) by this input face 30a (30b-30d).
  • a primary light source 1a (1b-1d) the light emitted by it being intended for penetrate at least partially into the associated guide 3a (3b-3d) by this input face 30a (30b-30d).
  • the distance between an output plane of the light source 1a (1b-1d) and the input face of the associated guide 3a (3b-3d) is between 0.1 millimeters and 1 millimeter.
  • the upper faces 34a-34d of the guides are planar and extend in the same horizontal plane.
  • the figure 4 represents the light segments 7a-7d respectively produced by the secondary light sources 31a-31d of the guides 3a-3d, at the output of the optical module, on a wall located about 25 meters in front of the projection element 5.
  • the lower faces 35a-35d of the guides 3a-3d are spreading faces shaped so as to widen the cross section of the guide 3a (3b-3d), continuously, from its inlet face to its face output, each guide 3a (3b-3d) flaring down from its entrance to its exit.
  • the lower faces 35a-35d are here curved and have a flared shape. Alternatively, they could be flat and inclined relative to the longitudinal axis of the guide.
  • each guide 3a (3b-3d) allows a vertical downward spread of the secondary light source 31a (31b-31d) at the outlet of the guide, which corresponds to a spread towards the top of the light segment produced as it appears on the figure 4 . Thanks to the shaping of the bottom of the guides 3a-3d, the top of each light segment 7b-7d is softened, the light intensity decreasing vertically upwards gradually.
  • the row of light guides 3a-3d comprises a left lateral end guide 3d and a right lateral end guide 3a, when the optical module is observed in the direction YY '.
  • the left end guide 3d is intended to produce a right light segment.
  • the right end guide 3a is intended to produce a left light segment.
  • the left end guide 3d comprises a left lateral spreading face 33d shaped to expand laterally, continuously, the cross section of the guide from its input face to its output.
  • the left side face 33D is here curved and flares from the input face 30d of the guide 3d to its output 31d.
  • the lateral face 33d could be flat and inclined with respect to the optical axis of the guide 3d.
  • the lateral widening of the guide 3d allows lateral spreading to the left of the secondary light source 31d at the output of the guide 3d, which corresponds here to a lateral spread to the right of the light segment produced 7d as it appears on FIG. figure 4 .
  • the right edge of the light segment 7d is softened, the light intensity decreasing laterally to the right gradually.
  • optical module represented on Figures 1 to 3 is intended to equip a right projector of a motor vehicle.
  • the optical module for a left motor vehicle headlight comprises a right end light guide 3a having a flared right side face similar to the left side face 31d of the guide 3d of the figure 2 .
  • the entry of the guides 3a-3d has the effect of reducing the opening of the light rays emitted by the primary sources 1a-1d, the rays entering the guides 3a-3d being folded by the laws of refraction.
  • the light rays are not deflected due to the connection between the guides 3a-3d and the corrective part 4. This, the reduced opening of the rays is preserved.
  • the light rays issuing from the corrective part 4 by the exit face 41 are not or little deviated thanks to the spheroidal dome shape of the outlet face 41.
  • the half-spherical corrective part 4 being centered on the output of one of the guides, here the guide 3b, a radius from the exit plane of this guide 3b at the optical axis 6 is normal or almost normal to the output face 41 and is therefore not not deviated to the interface between the corrective part 4 and the surrounding air.
  • a ray originating from an area remote from the optical axis 6 is folded towards this optical axis 6.
  • the refraction at the interface between the corrective part 4 and the surrounding medium (air) is in a way "compensated" by the shape spherical, or substantially spherical, of the exit face 41.
  • the corrective part 4 also makes it possible to correct the field aberrations of the optical system and thus ensure good quality imaging, as will be explained further later.
  • the projection element 5 is here a convergent optical lens having the axis 6 for optical axis.
  • the distance separating the corrective part 4 and the projection optical element 5 is strictly greater than zero and adapted so that the plane in which the outputs of the guides 31a-31 extend coincides with the object focal plane of the lens. projection 5.
  • the optical module is adapted to create an infinite image of the secondary light sources 31a-31d formed at the output ends of the guides 3a-3d.
  • a light beam emitted by one of the light sources 1a (1b-1d) and having an opening ⁇ with respect to the optical axis of the associated guide 3a (3b-3d) is folded down, at the entrance to the guide, by the laws of refraction in arcsin 1 not . sin ⁇ , where n represents the refractive index inside the guide 3a (3b-3d).
  • the spokes then pass through the corrective part 4 in straight lines and exit through the exit face 41 while propagating forwards towards the projection element 5.
  • the Figures 7 and 8 respectively represent, in top view, the path of a light beam emerging from the guide 3b located substantially on the optical axis 6 and the path of a light beam coming out of the guide 3c located outside the optical axis 6. For the sake of clarity, the guides are not represented on these Figures 7 and 8 .
  • the radii 8b emitted by the output 31b of the guide 3b located substantially on the optical axis 6 are virtually deviated at the interface between the corrective part 4 and the surrounding medium (air), when they pass through the face of output 41, thanks to the spherical shape of the interface.
  • the radii 8c emitted by the output 31c of the guide 3c located outside the optical axis 6 are slightly folded towards the optical axis 6 at the interface between the corrective part 4 and the surrounding air, when they pass through the exit face 41.
  • the corrective part 4 makes it possible to reduce the inclination of the rays when they impact the projection lens 5, not only for the rays issuing from the guide 3b positioned at the spherical center, but also for the rays coming from the eccentric guides which undergo a projection. slight deviation at the exit of the corrective part 4. Thus, the corrective part 4 decreases the optical aberrations.
  • the ball portion shape of the corrective portion 4 improves imaging in the field.
  • the light segments 7a-7c produced by the outputs 31a-31c of the guides 3a-3c have vertical rectangle shapes and have in their upper part a spread of the light induced by the low flare of the guides 3a-3c.
  • the light segment 7d has a double spread of the light: a high spread of the light induced by the low flare of the 3d guide and a right lateral spreading induced by the left lateral flare of the 3d guide. In the areas of spread of the light, the light intensity decreases gradually.
  • the optical module of the invention has an excellent optical efficiency.
  • the luminous flux emitted by the sources undergo little loss and are recovered largely at the output of the module to create light beams capable of forming light segments.
  • the optical module can produce light segments whose shapes are perfectly controlled.
  • the vertical boundaries of the light segments have a shape and clarity well controlled.
  • “Modulation” or “microstructure” type patterns could be added to the surfaces of the projection element 5 to intentionally add a controlled cut-off blur.
  • FIG 9 there is shown a side view, in the direction XX ', of the light guide 3a.
  • the figure 9 ' represents a perspective view of the guides 3a-3d according to this embodiment.
  • the upper face 34a of the guide 3a is a curved surface generally having a cylindrical portion shape. This has the effect of concentrating the light intensity in the upper part of the beam coming out of the guide 3a, which corresponds to a zone (called "range area”) located in the bottom of the light beam produced at the output of the optical module.
  • the shape of the upper face 34a is adapted to optically conjugate the point A, located in the air and corresponding to a light emission point of the source 1a, and the point B, located in the material of the guide 3a, at the exit 31a of the guide.
  • the specific shape of the surface 34a can be calculated by applying Fermat's theorem to maintain the constant optical path between the points A and B.
  • a modification of the shape of the input face 30, in particular of its upper portion 300a causes a modification of the shape of the upper face 34a.
  • the inlet face 30a of the guide 3a extends partially in a plane inclined to the vertical of an angle ⁇ , between 0 ° and 45 °, preferably between 10 ° and 30 °.
  • the inlet face 30a has a slightly convex upper portion 300a and a slightly concave lower portion 301a.
  • the convex upper portion 300a has the effect of helping to focus the light intensity in the range of the produced light segment.
  • the concave lower portion 301a has the effect of helping to spread the light down guide 3a and, therefore, in the upper part of the light segment produced 7a.
  • the light sources 1a-1d are mounted on a support inclined at the same angle ⁇ relative to the vertical, facing the input faces 30a-30d.
  • the lower face 35a of the guide is here flat and inclined downwards so as to continuously widen the cross section of the guide 3a from its inlet 30a to its outlet 31a.
  • the light guide 3a is shown.
  • the other guides 3b-3d are analogous, with the only difference that the guide 3d has a left lateral face similar to that of the first embodiment as shown in FIG. figure 2 .
  • the corrective part 4 has a shape of half-ball or half-sphere. Other embodiments are possible.
  • the corrective part 4 has a slightly deformed half-ball shape, as shown in FIGS. Figures 11 and 12 .
  • the figure 11 represents a profile view in the direction XX 'of the optical module 2.
  • the corrective part 4 comprises a lower portion 42 and an upper portion 43, separated by a horizontal plane P h represented by a dashed line on the figure 11 .
  • the radius of curvature of the outlet face 41 decreases progressively downwards, from the plane Ph, in order to gradually fold the spokes towards the optical axis 6, as shown in FIG. figure 11 .
  • This is equivalent to gradually spreading the rays in the output plane of the guides.
  • the rays spread in the bottom of the output plane of the guides have the effect of spreading the top of the light beam at the output of the optical module. This avoids a diaphragm effect from the bottom of the projection lens 5 which would produce by occultation a sudden cut of the top of the light beam.
  • the figure 12 represents a view from above in the direction ZZ 'of the optical module 2.
  • the corrective part 4 comprises a left lateral part 44 and a right lateral part 45, separated by a vertical plane P v , when the module 2 is observed in the direction YY '.
  • the radius of curvature of the output face 41 of the corrective part 4 decreases gradually from the plane Pv to the left. This is equivalent to gradually spreading the rays in the output plane of the guides.
  • the rays spread in the left part of the exit plane of the guides have the effect of spreading the right part of the light beam at the output of the optical module. This avoids a diaphragm effect by the left side of the projection lens 5 which would produce by occultation a sudden cut of the top of the light beam.
  • the corrective part 4 comprises an outlet front face 41 having a shape of spherical cap (that is to say a portion of sphere intersected by a plane other than median), connected to the exit plane guides 3a-3d by a rear portion of conical, cylindrical or other.
  • the rear of the corrective portion 4 is connected to the outputs of the guides, located in the object focal plane of the projection lens 5, and further comprises, outside the connection areas of the guides, an optically inactive material-air interface. This material-air interface must be shaped not to be impacted by light rays coming out of the optical guides 3a-3d.
  • the air interface portion of the rear of the corrective portion 4 may be adapted and shaped to function as a mechanical attachment zone.
  • the projection optical element is a lens.
  • the lens could be replaced by any other projection optical element, capable of creating an infinite image of the outputs 31a-31d of the guides.
  • This projection element could comprise one or more lenses, or one or more reflective mirrors, or a combination of mirror (s) and lens (s).
  • the projection element has no inversion effect.
  • the shapes of the light guides 3a-3d and the corrective part 4 must be adapted according to the shape of the desired light beams at the output of the optical module.
  • the invention also relates to a motor vehicle headlight incorporating one or more optical lighting modules according to any one of the described embodiments.

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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)
EP13196380.3A 2012-12-14 2013-12-10 Optisches hauptelement, beleuchtungsmodul und scheinwerfer für kraftfahrzeug Active EP2743567B1 (de)

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FR1262043A FR2999679B1 (fr) 2012-12-14 2012-12-14 Element optique primaire, module d'eclairage et projecteur pour vehicule automobile.

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FR3012867A1 (fr) * 2013-11-07 2015-05-08 Valeo Vision Element optique primaire, module lumineux et projecteur pour vehicule automobile
WO2016005409A1 (fr) * 2014-07-11 2016-01-14 Valeo Vision Module lumineux d'un véhicule automobile
FR3025865A1 (fr) * 2014-09-16 2016-03-18 Valeo Vision Dispositif d'eclairage d'un vehicule utilisant une lentille optique multisource
FR3025863A1 (fr) * 2014-09-16 2016-03-18 Valeo Vision Module lumineux comprenant une lentille optique multi sources
WO2016050983A1 (fr) * 2014-10-02 2016-04-07 Valeo Vision Module d'eclairage pour un dispositif d'eclairage en segments lumineux d'un projecteur pour vehicule automobile
EP3067618A1 (de) * 2015-03-13 2016-09-14 Valeo Iluminacion Leuchtvorrichtung mit optischen wellenleitern
DE102016007368A1 (de) 2015-07-08 2017-01-12 Valeo Vision Zum Aussenden eines segmentierten Lichtbündels konfigurierte Beleuchtungsvorrichtung, insbesondere für Kraftfahrzeuge, und mit einer solchen Vorrichtung ausgestatteter Scheinwerfer
EP3128225A1 (de) * 2015-08-07 2017-02-08 Valeo Vision Beleuchtungssystem für kfz-scheinwerfer, das ein beleuchtungsmodul mit reduziertem platzbedarf umfasst
EP3147557A1 (de) * 2015-09-28 2017-03-29 Valeo Vision Primäres optisches element für kraftfahrzeugsbeleuchtungsmodul
FR3050010A1 (fr) * 2016-04-11 2017-10-13 Valeo Vision Module d'emission de lumiere compact, dispositif et projecteur associes pour vehicule automobile
CN107346045A (zh) * 2016-05-04 2017-11-14 嘉兴海拉灯具有限公司 一种光导部件及具有该光导部件的车灯
FR3056695A1 (fr) * 2016-09-29 2018-03-30 Valeo Vision Dispositif d'eclairage pour vehicule automobile comportant un guide de lumiere
FR3056694A1 (fr) * 2016-09-29 2018-03-30 Valeo Vision Dispositif d'eclairage pour vehicule automobile comportant un guide de lumiere
FR3056693A1 (fr) * 2016-09-29 2018-03-30 Valeo Vision Dispositif d'eclairage en bandes pour projecteur de vehicule automobile
FR3056692A1 (fr) * 2016-09-29 2018-03-30 Valeo Vision Module optique pour vehicule automobile
EP3330597A1 (de) * 2016-12-01 2018-06-06 OSRAM GmbH Primäroptik, sekundäroptik, modul, anordnung, fahrzeugscheinwerfer und scheinwerfersystem
EP3434966A4 (de) * 2016-03-24 2019-12-11 Koito Manufacturing Co., Ltd. Fahrzeugscheinwerfer, fahrzeugscheinwerfersteuerungssystem und mit fahrzeugscheinwerfer und fahrzeugscheinwerfersteuerungssystem ausgestattetes fahrzeug
WO2020069916A1 (en) 2018-10-02 2020-04-09 Lumileds Holding B.V. Optical element for lighting device
WO2020083711A1 (fr) * 2018-10-25 2020-04-30 Valeo Vision Module lumineux pour dispositif d'eclairage de vehicule
CN111256094A (zh) * 2020-01-22 2020-06-09 广州市焦汇光电科技有限公司 光学装置、光学系统和光学幕墙投影系统
WO2020193152A1 (de) * 2019-03-27 2020-10-01 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für ein kraftfahrzeug
DE102019131685A1 (de) * 2019-11-22 2021-05-27 Automotive Lighting Reutlingen Gmbh Lichtmodul, Lichtleiteranordnung, Beleuchtungseinrichtung und Kraftfahrzeug
EP3961085A1 (de) * 2020-08-25 2022-03-02 Lumileds LLC Beleuchtungssystem für kfz-scheinwerfer
DE102020134410A1 (de) 2020-12-21 2022-06-23 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge
US12018807B2 (en) 2020-07-30 2024-06-25 Lumileds, LLC Automotive lighting system
WO2024179826A1 (fr) * 2023-03-01 2024-09-06 Valeo Vision Module d'eclairage pour vehicule automobile

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CN112781002A (zh) * 2020-07-17 2021-05-11 华域视觉科技(上海)有限公司 车辆远光灯模组、车辆前照灯及车辆

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EP1903274A1 (de) * 2006-09-19 2008-03-26 Schefenacker Vision Systems Germany GmbH Leuchteinheit zur Fern- und Abblendlichterzeugung
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Cited By (69)

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EP3372893A1 (de) * 2013-11-07 2018-09-12 Valeo Vision Optisches hauptelement, beleuchtungsmodul und scheinwerfer für kraftfahrzeug
EP2871406A1 (de) * 2013-11-07 2015-05-13 Valeo Vision Optisches Hauptelement, Beleuchtungsmodul und Scheinwerfer für Kraftfahrzeug
FR3012867A1 (fr) * 2013-11-07 2015-05-08 Valeo Vision Element optique primaire, module lumineux et projecteur pour vehicule automobile
WO2016005409A1 (fr) * 2014-07-11 2016-01-14 Valeo Vision Module lumineux d'un véhicule automobile
FR3023600A1 (fr) * 2014-07-11 2016-01-15 Valeo Vision Module lumineux d'un vehicule automobile
JP2017521832A (ja) * 2014-07-11 2017-08-03 ヴァレオ ビジョンＶａｌｅｏ Ｖｉｓｉｏｎ 自動車用の照明モジュール
US10697601B2 (en) 2014-07-11 2020-06-30 Valeo Vision Lighting module for a motor vehicle
FR3025863A1 (fr) * 2014-09-16 2016-03-18 Valeo Vision Module lumineux comprenant une lentille optique multi sources
FR3025865A1 (fr) * 2014-09-16 2016-03-18 Valeo Vision Dispositif d'eclairage d'un vehicule utilisant une lentille optique multisource
EP2998645A3 (de) * 2014-09-16 2016-06-15 Valeo Vision Beleuchtungsvorrichtung eines fahrzeugs, die eine optische linse mit mehreren quellen verwendet
US9879838B2 (en) 2014-09-16 2018-01-30 Valeo Vision Vehicle lighting device using a multiple-source optical lens
CN106796012B (zh) * 2014-10-02 2019-10-18 法雷奥照明公司 用于机动车辆前照灯的以光区段方式照明的装置的照明模块
FR3026820A1 (fr) * 2014-10-02 2016-04-08 Valeo Vision Module d'eclairage pour un dispositif d'eclairage en bandes d'un projecteur pour vehicule automobile
WO2016050983A1 (fr) * 2014-10-02 2016-04-07 Valeo Vision Module d'eclairage pour un dispositif d'eclairage en segments lumineux d'un projecteur pour vehicule automobile
CN106796012A (zh) * 2014-10-02 2017-05-31 法雷奥照明公司 用于机动车辆前照灯的以光区段方式照明的装置的照明模块
US10184632B2 (en) 2014-10-02 2019-01-22 Valeo Vision Lighting module for a device for lighting in light segments of a motor vehicle headlight
EP3067618A1 (de) * 2015-03-13 2016-09-14 Valeo Iluminacion Leuchtvorrichtung mit optischen wellenleitern
FR3033621A1 (fr) * 2015-03-13 2016-09-16 Valeo Iluminacion Sa Dispositif lumineux a guides optiques
US10261228B2 (en) 2015-03-13 2019-04-16 Valeo Iluminacion Vehicle lighting device with optical waveguides
DE102016007368A1 (de) 2015-07-08 2017-01-12 Valeo Vision Zum Aussenden eines segmentierten Lichtbündels konfigurierte Beleuchtungsvorrichtung, insbesondere für Kraftfahrzeuge, und mit einer solchen Vorrichtung ausgestatteter Scheinwerfer
FR3038694A1 (fr) * 2015-07-08 2017-01-13 Valeo Vision Dispositif lumineux configure pour emettre un faisceau lumineux segmente, notamment pour vehicule automobile, et projecteur muni d'un tel dispositif.
FR3039884A1 (fr) * 2015-08-07 2017-02-10 Valeo Vision Systeme d'eclairage pour projecteur de vehicule automobile comprenant un module d'eclairage a encombrement reduit
EP3128225A1 (de) * 2015-08-07 2017-02-08 Valeo Vision Beleuchtungssystem für kfz-scheinwerfer, das ein beleuchtungsmodul mit reduziertem platzbedarf umfasst
FR3041738A1 (fr) * 2015-09-28 2017-03-31 Valeo Vision Element optique primaire pour module lumineux de vehicule automobile
US10228108B2 (en) 2015-09-28 2019-03-12 Valeo Vision Primary optical element for motor vehicle lighting module
CN106969318A (zh) * 2015-09-28 2017-07-21 法雷奥照明公司 用于机动车辆的照明模块的主光学元件
EP3147557A1 (de) * 2015-09-28 2017-03-29 Valeo Vision Primäres optisches element für kraftfahrzeugsbeleuchtungsmodul
US10775011B2 (en) 2016-03-24 2020-09-15 Koito Manufacturing Co., Ltd. Vehicle lamp, vehicle lamp control system, and vehicle provided with vehicle lamp and vehicle lamp control system
EP3434966A4 (de) * 2016-03-24 2019-12-11 Koito Manufacturing Co., Ltd. Fahrzeugscheinwerfer, fahrzeugscheinwerfersteuerungssystem und mit fahrzeugscheinwerfer und fahrzeugscheinwerfersteuerungssystem ausgestattetes fahrzeug
FR3050010A1 (fr) * 2016-04-11 2017-10-13 Valeo Vision Module d'emission de lumiere compact, dispositif et projecteur associes pour vehicule automobile
CN107346045B (zh) * 2016-05-04 2023-09-12 嘉兴海拉灯具有限公司 一种光导部件及具有该光导部件的车灯
CN107346045A (zh) * 2016-05-04 2017-11-14 嘉兴海拉灯具有限公司 一种光导部件及具有该光导部件的车灯
CN108302476A (zh) * 2016-09-29 2018-07-20 法雷奥照明公司 用于机动车辆的包括光导的照明装置
CN114877286A (zh) * 2016-09-29 2022-08-09 法雷奥照明公司 用于机动车辆的包括光导的照明装置
CN108302464A (zh) * 2016-09-29 2018-07-20 法雷奥照明公司 用于机动车辆的光学模块
CN114877286B (zh) * 2016-09-29 2024-05-24 法雷奥照明公司 用于机动车辆的包括光导的照明装置
JP2018067535A (ja) * 2016-09-29 2018-04-26 ヴァレオ ビジョンＶａｌｅｏ Ｖｉｓｉｏｎ 自動車ヘッドランプ用のストライプ分割ビームを生成する照明装置
EP3301347A1 (de) * 2016-09-29 2018-04-04 Valeo Vision Beleuchtungsvorrichtung für kraftfahrzeug, die einen lichtwellenleiter umfasst
EP3301349A1 (de) * 2016-09-29 2018-04-04 Valeo Vision Optisches modul für kraftfahrzeug
US10337684B2 (en) 2016-09-29 2019-07-02 Valeo Vision Lighting device for a motor vehicle comprising a light guide
EP3301348A1 (de) * 2016-09-29 2018-04-04 Valeo Vision Bandförmige beleuchtungsvorrichtung für kraftfahrzeugscheinwerfer
US10480742B2 (en) 2016-09-29 2019-11-19 Valeo Vision Optical module for a motor vehicle
FR3056692A1 (fr) * 2016-09-29 2018-03-30 Valeo Vision Module optique pour vehicule automobile
FR3056695A1 (fr) * 2016-09-29 2018-03-30 Valeo Vision Dispositif d'eclairage pour vehicule automobile comportant un guide de lumiere
EP3636990A1 (de) * 2016-09-29 2020-04-15 Valeo Vision Beleuchtungsvorrichtung für kraftfahrzeug, die einen lichtwellenleiter umfasst
CN108302476B (zh) * 2016-09-29 2022-05-24 法雷奥照明公司 用于机动车辆的包括光导的照明装置
JP7019359B2 (ja) 2016-09-29 2022-02-15 ヴァレオ ビジョン 自動車ヘッドランプ用のストライプ分割ビームを生成する照明装置
CN108302464B (zh) * 2016-09-29 2022-01-28 法雷奥照明公司 用于机动车辆的光学模块
FR3056693A1 (fr) * 2016-09-29 2018-03-30 Valeo Vision Dispositif d'eclairage en bandes pour projecteur de vehicule automobile
US10724700B2 (en) 2016-09-29 2020-07-28 Valeo Vision Lighting device generating stripe segmented beam for a motor-vehicle headlamp
FR3056694A1 (fr) * 2016-09-29 2018-03-30 Valeo Vision Dispositif d'eclairage pour vehicule automobile comportant un guide de lumiere
US10962187B2 (en) 2016-12-01 2021-03-30 Osram Beteiligungsverwaltung Gmbh Primary optical unit, secondary optical unit, module, arrangement, vehicle headlight, and headlight system
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CN108131636A (zh) * 2016-12-01 2018-06-08 欧司朗有限公司 初级光学件、次级光学件、交通工具前照灯和前照灯系统
US11079602B2 (en) 2018-10-02 2021-08-03 Lumileds Llc Optical element for lighting device
WO2020069916A1 (en) 2018-10-02 2020-04-09 Lumileds Holding B.V. Optical element for lighting device
US11454365B2 (en) 2018-10-25 2022-09-27 Valeo Vision Luminous module for vehicle lighting device with deviating light guide
FR3087875A1 (fr) * 2018-10-25 2020-05-01 Valeo Vision Module lumineux pour dispositif d'eclairage de vehicule
WO2020083711A1 (fr) * 2018-10-25 2020-04-30 Valeo Vision Module lumineux pour dispositif d'eclairage de vehicule
WO2020193152A1 (de) * 2019-03-27 2020-10-01 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für ein kraftfahrzeug
DE102019131685A1 (de) * 2019-11-22 2021-05-27 Automotive Lighting Reutlingen Gmbh Lichtmodul, Lichtleiteranordnung, Beleuchtungseinrichtung und Kraftfahrzeug
CN111256094A (zh) * 2020-01-22 2020-06-09 广州市焦汇光电科技有限公司 光学装置、光学系统和光学幕墙投影系统
CN111256094B (zh) * 2020-01-22 2022-09-23 广州市焦汇光电科技有限公司 光学装置、光学系统和光学幕墙投影系统
US12018807B2 (en) 2020-07-30 2024-06-25 Lumileds, LLC Automotive lighting system
EP4189280A4 (de) * 2020-07-30 2024-10-09 Lumileds Llc Beleuchtungssystem für kraftfahrzeuge
EP3961085A1 (de) * 2020-08-25 2022-03-02 Lumileds LLC Beleuchtungssystem für kfz-scheinwerfer
DE102020134410A1 (de) 2020-12-21 2022-06-23 HELLA GmbH & Co. KGaA Beleuchtungsvorrichtung für Fahrzeuge
WO2024179826A1 (fr) * 2023-03-01 2024-09-06 Valeo Vision Module d'eclairage pour vehicule automobile
FR3146332A1 (fr) * 2023-03-01 2024-09-06 Valeo Vision Module d’éclairage

Also Published As

Publication number Publication date
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FR2999679A1 (fr) 2014-06-20
FR2999679B1 (fr) 2015-01-16

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