EP3461687B1 - Dispositif de guide de lumière d'un véhicule automobile et lampe de véhicule automobile muni d'un tel dispositif de guide de lumière - Google Patents

Dispositif de guide de lumière d'un véhicule automobile et lampe de véhicule automobile muni d'un tel dispositif de guide de lumière Download PDF

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Publication number
EP3461687B1
EP3461687B1 EP18194094.1A EP18194094A EP3461687B1 EP 3461687 B1 EP3461687 B1 EP 3461687B1 EP 18194094 A EP18194094 A EP 18194094A EP 3461687 B1 EP3461687 B1 EP 3461687B1
Authority
EP
European Patent Office
Prior art keywords
light
partial
section
light guide
redistribution
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.)
Active
Application number
EP18194094.1A
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German (de)
English (en)
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EP3461687A1 (fr
Inventor
Daniel Rülke
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marelli Automotive Lighting Reutlingen Germany GmbH
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Automotive Lighting Reutlingen GmbH
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Publication of EP3461687A1 publication Critical patent/EP3461687A1/fr
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Publication of EP3461687B1 publication Critical patent/EP3461687B1/fr
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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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/249—Light guides with two or more light sources being coupled into the light guide
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/10—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source
    • F21S43/13—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by the light source characterised by the type of light source
    • F21S43/14—Light emitting diodes [LED]
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/239—Light guides characterised by the shape of the light guide plate-shaped
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/236—Light guides characterised by the shape of the light guide
    • F21S43/241—Light guides characterised by the shape of the light guide of complex 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
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/243—Light guides characterised by the emission area emitting light from one or more of its extremities
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21S—NON-PORTABLE LIGHTING DEVICES; SYSTEMS THEREOF; VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLE EXTERIORS
    • F21S43/00—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights
    • F21S43/20—Signalling devices specially adapted for vehicle exteriors, e.g. brake lamps, direction indicator lights or reversing lights characterised by refractors, transparent cover plates, light guides or filters
    • F21S43/235—Light guides
    • F21S43/242—Light guides characterised by the emission area
    • F21S43/245—Light guides characterised by the emission area emitting light from one or more of its major surfaces

Definitions

  • the present invention relates to a light guide arrangement of a motor vehicle lamp according to the preamble of claim 1.
  • a light guide arrangement is from EP 3 179 157 A1 known.
  • From the FR 3 042 258 a light guide arrangement with at least two light sources is known, which essentially illuminate the same light exit surface of the light guide.
  • the invention also relates to a motor vehicle light for generating a number of light functions.
  • the lamp comprises a housing with a light exit opening directed in a light exit direction, which is closed by means of a transparent cover plate.
  • the lamp in the housing comprises at least two different lamp functions associated semiconductor light sources for emitting light and a light guide arrangement for bundling (collimating) of the Light sources emitted light and for emitting the focused light to generate at least one of the lighting functions.
  • So-called prompter reflectors, attachment optics or so-called slit lights are mentioned here as examples.
  • SlitLights are for example from the U.S. 9,557,024 known.
  • both LEDs cannot be placed so close to the focal point at the same time that a light distribution with acceptable optical efficiency can be generated. Even more serious, however, is the influence of the LEDs that are out of focus on the homogeneity of the appearance of the luminaire when it is switched on. Since the lighting functions represent an essential design element in the motor vehicle, the illumination of a specific light exit surface should be as homogeneous as possible. If LEDs are outside the focal point, homogeneous illumination is usually no longer possible.
  • the present invention is based on the object Light guide arrangement or a motor vehicle light of the type mentioned in such a way to design and develop that an optically efficient multifunction light is realized on the basis of a transparent light guide arrangement.
  • the homogeneity of the appearance of the light for all light functions should be comparable to that of a single-function light.
  • a light redistribution section is arranged between the entry section and the exit section.
  • the entry section includes means for coupling and collimating light that was emitted by at least two separate semiconductor light sources, so that the light from the two light sources is present at a transition to the redistribution section as at least two collimated light beams arranged next to one another or one on top of the other.
  • Each of the light bundles includes only light from one of the light sources.
  • the redistribution section includes totally reflecting partial surfaces of boundary surfaces of the light guide.
  • the partial surfaces are designed and arranged in the light guide in such a way that they split the at least two collimated light bundles arranged next to one another or one on top of the other into a plurality of collimated partial light bundles and rearrange the partial light bundles in such a way that partial light bundles with Alternating light from one light source with partial light bundles with light from at least one other light source.
  • a motor vehicle light with such proposed light guide arrangement according to the invention.
  • the semiconductor light sources are in the form of light-emitting diodes (LEDs), for example.
  • An LED can include one or more LED chips.
  • the LED chips in an LED can emit light of the same color or different colors.
  • the LEDs of the motor vehicle lamp can also emit light of the same color or different colors. If the LEDs emit light of different colors, different lighting functions of different colors can be generated with the motor vehicle light.
  • the light emitted by one or both light sources is coupled into the entry section of the light guide and collimated. Many options are known from the prior art for this purpose, so that the bundling or collimating of light coupled into a light guide will not be discussed in detail here. It is crucial that at least two collimated light beams are present at the transition between the entry section and the redistribution section of the light guide.
  • the collimated light bundles are divided into several collimated partial light bundles and redistributed with regard to their position relative to one another within the light guide with the aim of bringing about an illumination of the light exit surface of the light guide that is as homogeneous as possible for an observer.
  • the collimating optics can be part of the same component. Only the collimated beams are mixed so that both LEDs can illuminate a light exit surface to the same extent without the parallelism of the beam bundles being lost.
  • the illumination of the light exit surface resembles thin stripes or a checkerboard pattern, which is perceived by an observer as a uniformly luminous surface if the luminous "strips" or "fields" are sufficiently small.
  • a preferred embodiment is characterized in that the totally reflecting partial surfaces of the boundary surfaces of the light guide are designed and arranged in the light guide in such a way that they split the two collimated light bundles arranged next to one another or one above the other into two collimated partial light bundles.
  • a thickness of the light guide in the first direction at the transition between the entry section and the redistribution section is just as great as at a transition between the redistribution section and the exit section.
  • the redistribution section is designed such that at least one partial light beam of at least one light beam without redistribution by the Redistribution section arrived.
  • a further preferred configuration is characterized in that the redistribution section has on a first boundary surface a first partial surface which is inclined with respect to the first boundary surface and which is arranged and designed in the redistribution section in such a way that part of a light beam from the entry section strikes it, which forms a first partial light beam, and it deflects this partial light beam essentially transversely to the direction of light propagation, so that it impinges on a second partial surface of the redistribution section, which is formed on a second boundary surface opposite the first boundary surface.
  • the second partial surface is inclined with respect to the second boundary surface and is arranged and configured in the redistribution section in such a way that it deflects the first partial light bundle originating from the first partial surface essentially in the direction of light propagation.
  • first partial surface and/or the second partial surface are arranged at an angle of 45° with respect to the first boundary surface or the second boundary surface.
  • a further preferred embodiment is characterized in that the redistribution section has a depression on a first interface or on a second interface opposite the first interface with two third and fourth sub-areas running obliquely to one another and obliquely with respect to the corresponding interface.
  • Another preferred configuration is characterized in that the third partial surface of the recess is directed in the direction of the entry section and is arranged and configured in the redistribution section in such a way that it deflects impinging partial light beams onto the opposite boundary surface of the deflection section, which deflects them in the direction of the fourth partial surface the deepening deflects.
  • the third and fourth partial surfaces of the recess are arranged and configured in the redistribution section in such a way that the partial light beams impinging on the third partial surface, after being deflected by the third partial surface, the opposite boundary surface and the fourth partial surface, turn in the direction of light propagation in the Light guides propagate, but the location of the Partial light beam is changed relative to each other at least in the first direction.
  • the depression is formed in the first boundary surface of the light guide and the third partial surface of the depression, which is directed in the direction of the entry section, is arranged and formed in the redistribution section in such a way that a part of the first light bundle from the entry section forms a second partial light bundle , and a part of the second light beam from the entrance section impinges on them, forming a third partial light beam.
  • a further preferred configuration is characterized in that the depression is formed in the second boundary surface of the light guide and the third partial surface of the depression, which is directed in the direction of the entry section, is arranged and formed in the redistribution section in such a way that the first partial light bundle is separated from the second partial surface and a Part of a light beam from the entrance section strikes them, which forms a fourth partial light beam.
  • the exit section has a first deflection surface that is inclined with respect to the boundary surfaces of the light guide, which is designed and arranged in the exit section in such a way that all partial light beams from the redistribution section impinge on it and it deflects the partial light beams in the direction of second deflection surfaces that are configured in such a way are formed and arranged in the exit section such that all the partial light beams deflected by the first deflection surface impinge on them and they deflect the partial light beams in the direction of the light exit surface.
  • the totally reflecting partial surfaces of the boundary surfaces of the light guide are designed and arranged in the redistribution section in such a way that partial light bundles with light from one light source also appear on the light exit surface in a direction running transversely to the first direction with partial light bundles with light from the other Alternate light source.
  • Another preferred embodiment is characterized in that the totally reflecting partial surfaces are designed and arranged in the redistribution section such that partial light bundles with light from one light source alternate on the light exit surface in a chessboard pattern with partial light bundles with light from the other light source.
  • a preferred embodiment of the motor vehicle light is characterized in that its light guide arrangement is designed in accordance with one of the preceding embodiments.
  • a motor vehicle light according to the invention is denoted by the reference numeral 2 in its entirety.
  • the lamp 2 shown is, for example, a rear, side or front lamp.
  • the lamp 2 is used to generate several different lamp functions.
  • the lamp 2 includes a housing 4 with a light exit opening 8 directed in a light exit direction 6 , which is closed by means of a transparent cover plate 10 .
  • a lighting module 12 is arranged, which in figure 6 is shown only schematically.
  • the lamp module 12 comprises at least two semiconductor light sources for emitting light, which are assigned to different lamp functions of the lamp 2 .
  • the lamp module 12 comprises a light guide arrangement according to the invention for bundling the light emitted by the light sources and for emitting the bundled light to generate at least one of the lamp functions. Structure and operation of the light guide arrangement are based on the Figures 1 to 5 explained in more detail.
  • FIG. 1 to 3 and 5 longitudinal sections through various embodiments of a plate-shaped light guide 20 of a light guide arrangement according to the invention are shown.
  • the light guides 20 are used to implement two or more different lighting functions.
  • plate-shaped means that the light guide 20 has a relatively large extent in the x and z direction, but a comparatively small extent in the y direction.
  • the light guide 20 is made of an optically transparent material, preferably a plastic material, such as PC or PMMA. It can be manufactured simply, inexpensively and with dimensional accuracy using an injection molding process.
  • the light guide 20 has, in particular, two opposing base surfaces 22, 24, which do not have to be flat, but have steps or, for example, can be curved around an axis running into the plane of the drawing.
  • the bases 22, 24 run--apart from a few surface deformations--preferably parallel to each other.
  • the light guide 20 is functionally subdivided in a propagation direction 26 of light within the light guide 20 into a light entry section 28, a subsequent light redistribution section 30 and a subsequent light exit section 32 (cf. figure 1 ).
  • a sectional plane at the transition between the entry section 28 and the redistribution section 30 is denoted by reference numeral 34 . At the same time, this sectional plane represents an exit of the entry section 28 .
  • the entrance section 28 includes means (not shown) for coupling and collimating light emitted by two separate semiconductor light sources (not shown).
  • the semiconductor light sources are preferably in the form of light-emitting diodes (LEDs).
  • each of the light bundles A, B includes only light from one of the light sources.
  • the exit section 32 includes a light exit surface 38 through which at least part of the light coupled into the light guide 20 exits.
  • the entry section 28 may be formed integrally with the remainder of the light guide 20 or as a separate piece.
  • the light guide 20 includes a light entry surface through which the collimated light bundles of the light sources enter.
  • the light exit surfaces of two SlitLights stacked on top of each other as shown in figure 3 the U.S. 9,557,024 are known, are arranged opposite the light entry surface of the light guide 20, so that the two collimated light bundles emerging from the SlitLights enter the light guide 20 as efficiently as possible via the light entry surface.
  • the invention proposes that the light redistribution section 30 be a deflection structure made up of totally reflecting partial surfaces 40, 42, 44, 46 of the boundary surfaces 22 , 24 of the light guide 20, which are designed and arranged in the light guide 20 in such a way that they each split the two collimated light bundles A, B arranged next to one another into a plurality of collimated partial light bundles A1, A2; B1, B2 split and the partial light bundles A1, A2; Sort B1, B2 in such a way that in a first direction y of a cutting plane xy running transversely to the direction of light propagation 26, for example at the transition 36, partial light bundles A1, A2 with light from one light source with partial light bundles B1, B2 alternate with light from the other light source (cf. Figures 4b and 4c ).
  • the functioning of the light guide arrangement according to the invention is based on the Figures 1 to 4 explained in more detail.
  • the starting point is two collimated beams of rays A, B of the LEDs, which propagate in a transparent component in the z-direction (light propagation direction 26). On average, these are parallel and directly above one another in the y-direction.
  • figure 2 shows how a part A1 of the first beam A is reflected at the partial surface 40 of the boundary surface 24 by total internal reflection.
  • the partial beam A1 is reflected directly above the beam B, likewise by means of total reflection, back into the original direction of propagation 26.
  • the partial beam A1 is then reflected by total reflection on the partial surfaces 44, 46 of a recess 48 formed in the boundary surface 22 and on the opposite boundary surface 24 such that it now runs directly above a third partial beam B1 of the second beam bundle B.
  • the partial beam B1 passes through the redistribution section 30 through the redistribution structures without deflection or total reflection at one of the partial surfaces 40, 42, 44, 46.
  • the fourth partial beam B2 of the second beam bundle B is reflected by total reflection on the partial surfaces 44, 46 of the depression 48 and on the opposite boundary surface 24 in such a way that it now runs above the partial beam A1.
  • the light guide 22 has according figure 1 in the y-direction has a thickness h, and the recess has in the Light propagation direction 26 has a length l and in the y-direction a depth ⁇ h.
  • the third and fourth partial surfaces 44, 46 of the depression 48 are at an angle ⁇ obliquely with respect to the corresponding boundary surface 22 (cf. Figures 1, 2 and 5 ) or 24 (cf. figure 3 ).
  • figure 4 shows how this lamp 2 or the light exit surface 38 of the light guide 20 would appear in a viewing direction opposite to the z-direction.
  • the beam bundles A, B are clearly separated from one another, below A above B (cf. Figure 4a ).
  • the partial beam bundles can be seen, each with half the height ABAB (cf. Figure 4b ).
  • a checkerboard pattern on the light exit surface 38 (cf. Figure 4c ) can be offset in the x-direction from the cut figure 2 one inside figure 3 shown, mirrored arrangement of the partial surfaces 44, 46 of the recess 48 may be formed.
  • the partial beam A1 no longer reflected after the second partial surface 42 .
  • the partial beam B2 is not reflected on any part of the surface, but passes through the light guide 20 without being deflected Figure 4b complementary pattern BABA emerges. Due to the periodic arrangement of the deflection structure Figure 2 and Figure 3 a checkerboard pattern can be generated on the light exit surface 38 in this way.
  • the light distribution pattern is shown in a vertical section 50 through the redistribution structures figure 2 and the light distribution pattern in a vertical section 52 through the redistribution structures figure 3 generated.
  • the light guide 20 of the light guide arrangement according to the invention can in principle be realized in a transparent component with a focusing optic and a decoupling optic.
  • An example of an exit section 32 with a decoupling region is shown in FIG figure 5 shown.
  • the decoupling can be achieved via reflective or transmissive surfaces, which also produce a desired light distribution.
  • a first deflection surface 54 is provided in the exit section 32 in the beam path, which is inclined with respect to the boundary surfaces 22, 24 of the light guide 20, which is designed and arranged in the exit section 32 in such a way that all partial light bundles A1, A2, B1, B2 from the redistribution section 32 they strike and it deflects the partial light bundles A1, A2, B1, B2 in the direction of second deflection surfaces 56, which are designed and arranged in the exit section 32 in such a way that all partial light bundles A1, A2, B1, B2 deflected by the first deflection surface 54 strike them and they deflect the partial light bundles A1, A2, B1, B2 in the direction of the light exit surface 38.
  • the position of the partial beam bundles B2 via A1 via B1 via A2 at the transition 36 from the redistribution section 30 to the exit section 32 is retained even after deflection at the deflection surfaces 54, 56 and is also present at the light exit surface 38.
  • the partial beam bundles A1, A2, B1, B2 are only slightly expanded in the y-direction.
  • the present invention relates to a plate light guide 20 for realizing two or more different lamp functions and to a motor vehicle light 2 with such a plate light guide 20 .
  • the lighting functions are generated with the light of different separate light sources.
  • the various lamp functions can be generated simultaneously or at different times. For example, a daytime running light and a flashing light can be generated simultaneously, with the light source possibly being dimmed to generate the daytime running light.
  • a rear light and a brake light or a rear light and a blinking light can also be generated at the same time.
  • At least two collimated light bundles A, B are present in the entry section 28 of the light guide 20 at the transition 34 to the redistribution section 30 . These can each have the same height in the y-direction of the sectional plane (xy) running transversely to the light propagation direction 26 . However, it would also be conceivable for the collimated light bundles A, B to have different heights.
  • the redistribution section 30 has differently oriented redistribution structures in the form of totally reflecting partial surfaces 40, 42, 44, 46 of the boundary surfaces 22, 24 of the light guide 20, through which, on the one hand, the collimated light bundles A, B are divided into a plurality of collimated partial light bundles A1, A2, B1, B2 divided and on the other hand, the partial light bundles A1, A2, B1, B2 are rearranged within the light guide or their position relative to each other. If the light sources emit light of different colors, the rearranging of the partial light bundles A1, A2, B1, B2 by means of the rearranging structures ensures that the different colors hit the light exit surface 38 in small areas, so that the different illumination is hardly noticed by a viewer .
  • the sorting structures are defined surface deformations (partial surfaces 40, 42, 44, 46) of the boundary surfaces 22, 24 of the light guide 20, at which part of each light bundle A, B is deflected in such a way that the height of the resulting partial light bundles A1, A2, B1 , B2 is reduced, but the number of partial light bundles A1, A2, B1, B2 is increased compared to the number of light bundles A, B. If, for example, only two light sources are provided, which couple light into the light guide 20, the height of the partial light bundles A1, A2; B1, B2 versus the height of the corresponding light beam A; B and halve the number of partial light bundles A1, A2; Double B1, B2.
  • the sorting structures consist, for example, of changes in the thickness of the light guide plate 20, the light guide plate 20 itself having the same thickness in the direction of light propagation 26 before and after the redistribution section 30.
  • the resort structures allow for at least one Partial light bundles B1, A2; B2 pass through the light guide 20 unchanged. Due to the different orientation of the sorting structures, the light bundles A, B can be sorted in different directions (cf. Figure 4c ).

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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)
  • Light Guides In General And Applications Therefor (AREA)

Claims (15)

  1. Dispositif de guide de lumière d'une lampe de véhicule automobile (2), comprenant un guide de lumière (20) essentiellement en forme de plaque repartie fonctionnellement, à l'intérieur du guide de lumière, dans une direction de propagation de lumière (26), en une section d'entrée de lumière (28) et, en aval, une section de sortie de lumière (32), la section d'entrée (28) comprenant des moyens d'injection et de collimation de lumière ayant été émise par au moins une source lumineuse à semiconducteur, si bien qu'à une sortie (34) de la section d'entrée (28), la lumière de ladite au moins une source lumineuse soit présente comme au moins un faisceau de lumière collimaté, et la section de sortie (32) comprenant une surface de sortie de lumière (38) par laquelle au moins une partie de la lumière injectée dans le guide de lumière (20) sort, caractérisé en ce que, entre la section d'entrée (28) et la section de sortie (32), une section de redistribution de lumière (30) est disposée, en ce que la section d'entrée (28) comprend des moyens pour injecter et collimater de la lumière ayant été émise par au moins deux sources lumineuses à semiconducteur séparées, si bien que, à une transition (34) vers la section de redistribution (30), la lumière desdites au moins deux sources lumineuses soit présente comme au moins deux faisceaux collimatés (A, B) disposés l'un adjacent à l'autre et l'un à côté ou au-dessus de l'autre, chacun des faisceaux de lumière (A, B) ne comprenant de la lumière que d'une seule des sources lumineuses, et en ce que la section de redistribution (30) comprend des surfaces partielles (40, 42, 44, 46) totalement réfléchissantes d'interfaces (22, 24) du guide de lumière (20) qui sont configurées et disposées dans le guide de lumière (20) de façon qu'elles divisent, chacune, lesdits au moins deux faisceaux collimatés (A, B) disposés l'un adjacent à l'autre et l'un à côté ou au-dessus de l'autre, en plusieurs faisceaux de lumière partiels collimatés (A1, A2, B1, B2) et qu'elles redistribuent les faisceaux de lumière partiels collimatés (A1, A2, B1, B2) de façon telle que, dans une première direction (y) de la surface de sortie de lumière (38), des faisceaux de lumière partiels (A1, A2) avec de la lumière provenant de l'une des sources lumineuses alternent avec des faisceaux de lumière partiels (B1, B2) avec de la lumière provenant de ladite au moins une autre source lumineuse.
  2. Dispositif de guide de lumière selon la revendication 1, caractérisé en ce que les surfaces partielles (40, 42, 44, 46) totalement réfléchissantes d'interfaces (22, 24) du guide de lumière (20) sont configurées et disposées dans le guide de lumière (20) de façon telle qu'elles divisent, chacune, les deux faisceaux collimatés (A, B) disposés l'un adjacent à l'autre et l'un à côté ou au-dessus de l'autre en deux faisceaux de lumière partiels collimatés (A1, A2; B1, B2).
  3. Dispositif de guide de lumière selon la revendication 1 ou 2, caractérisé en ce que, à la transition (34) entre la section d'entrée (28) et la section de redistribution de lumière (30), une épaisseur (h) du guide de lumière (20) dans la première direction (y) est aussi grande qu'à une transition (36) entre la section de redistribution (30) et la section de sortie (32).
  4. Dispositif de guide de lumière selon l'une des revendications 1 à 3, caractérisé en ce que la section de redistribution (30) est configurée de façon à ce qu'au moins un faisceau de lumière partiel (A2, B1; B2) d'au moins un faisceau de lumière (A, B; B) passe sans redistribution par la section de redistribution (30).
  5. Dispositif de guide de lumière selon l'une des revendications 1 à 4, caractérisé en ce que la section de redistribution (30) comprend, sur une première interface (22), une première surface partielle (40) disposée obliquement relativement à la première interface (22) et qui est placée dans la section de redistribution (30) et configurée de façon telle qu'une partie d'un faisceau de lumière (A) constituant un premier faisceau partiel de lumière (A1) et provenant d'une section d'entrée, l'atteigne et qu'elle redirige ce faisceau partiel de lumière (A1) essentiellement transversalement à la direction de propagation de lumière (26) si bien qu'il arrive sur une deuxième surface partielle (42) de la section de redistribution (30) qui est formée sur une deuxième interface (24) située sur le côté opposé à la première interface (22).
  6. Dispositif de guide de lumière selon la revendication 5, caractérisé en ce que la deuxième surface partielle (42) est placée obliquement relativement à la deuxième interface (24) et disposée et configurée dans la section de redistribution (30) de façon à ce qu'elle fasse dévier le premier faisceau partiel de lumière (A1) provenant de la première surface partielle (40) essentiellement dans la direction de propagation de lumière (26).
  7. Dispositif de guide de lumière selon la revendication 5 ou 6, caractérisé en ce que la première surface partielle (40) et/ou la deuxième surface partielle (42) sont disposées dans un angle de 45° respectivement par rapport à la première interface (22) ou à la deuxième interface (24) .
  8. Dispositif de guide de lumière selon l'une des revendications 1 à 7, caractérisé en ce que la section de redistribution (30) comprend, sur une première interface (22) ou sur une deuxième interface (24) située sur le côté opposé à la première interface (22), un enfoncement (48) avec deux troisième et quatrième surfaces partielles (44, 46) disposées obliquement l'une par rapport à l'autre et obliquement par rapport à l'interface (22; 24) correspondante.
  9. Dispositif de guide de lumière selon la revendication 8, caractérisé en ce que le guide de lumière (20) présente, dans la première direction (y), une épaisseur (h) et l'enfoncement (48) présente, dans la direction de propagation de lumière (26), une longueur (l) et, dans la première direction (y), une profondeur (Δh) et en ce que les troisième et quatrième surfaces partielles (44, 46) de l'enfoncement (48) sont placées obliquement avec un angle (α) par rapport à l'interface (22; 24) correspondante, s'appliquant à l'enfoncement (48): l = 2 ⋅ h − Δ h tan 2 ⋅ α .
    Figure imgb0005
  10. Dispositif de guide de lumière selon la revendication 8 ou 9, caractérisé en ce que les troisième et quatrième surfaces partielles (44, 46) de l'enfoncement (48) sont disposées toutes les deux obliquement dans le même angle (α) < 45° par rapport à l'interface correspondante (22; 24) .
  11. Dispositif de guide de lumière selon l'une des revendications 8 à 10, caractérisé en ce que la troisième surface partielle (44) de l'enfoncement (48) est orientée en direction de la section d'entrée (28) et est disposée dans la section de redistribution (30) et configurée de façon à ce qu'elle redirige des faisceaux partiels de lumière (A1, B2; A2, B1) incidents, vers l'interface opposée (24; 22) de la section de redirection (20) qui les redirige en direction de la quatrième surface partielle (46) de l'enfoncement (48).
  12. Dispositif de guide de lumière selon la revendication 11, caractérisé en ce que les troisième et quatrième surfaces partielles (44, 46) de l'enfoncement (48) sont disposées dans la section de redistribution (30) et configurées de façon à ce que les faisceaux partiels de lumière (A1, B2; A2, B1) qui incident sur la troisième surface partielle (44), se propagent, après avoir été redirigés par la troisième surface partielle (46), l'interface opposée (24; 22) et la quatrième surface partielle (46), de nouveau dans la direction de propagation de lumière (26) dans le guide de lumière (20), la position des faisceaux partiels de lumière (A1, B2; A2, B1) étant cependant modifiée l'une par rapport à l'autre, au moins dans la première direction (y).
  13. Dispositif de guide de lumière selon l'une des revendications 8 à 12, caractérisé en ce que l'enfoncement (48) est formé dans la première interface (22) du guide de lumière (20) et que la troisième surface partielle (44) de l'enfoncement (48) orientée vers la section d'entrée (28) est disposée et formée dans la section de redistribution (30) de façon à ce qu'une partie du premier faisceau de lumière (A) provenant de la section d'entrée (28), partie qui forme un deuxième faisceau partiel de lumière (A2), et une partie du deuxième faisceau de lumière (B) provenant de la section de redistribution (30), partie qui forme un troisième faisceau partiel de lumière (B1), l'atteignent.
  14. Dispositif de guide de lumière selon la revendications 6 et une des revendications 8 à 12, caractérisé en ce que l'enfoncement (48) est formé dans la deuxième interface (24) du guide de lumière (20) et que la troisième surface partielle (44) de l'enfoncement (48) orientée en direction de la section d'entrée de lumière (28) est disposée et formée dans la section de redistribution de lumière (30) de façon à ce que le premier faisceau partiel de lumière (A1) de la deuxième surface partielle (42) et une partie d'un faisceau lumineux (B) provenant de la section de redistribution de lumière (30), partie qui forme un quatrième faisceau partiel de lumière (B2), l'atteignent.
  15. Lampe de véhicule automobile (2) pour produire plusieurs fonctions d'éclairage, comprenant un boîtier (4) avec une ouverture de sortie de lumière (8) orientée dans une direction de sortie de lumière (6) et fermée au moyen d'un cache transparent (10), au moins deux sources lumineuses semiconductrices associées à des fonctions d'éclairage différentes pour la diffusion de lumière et un dispositif de guide de lumière pour former un faisceau de la lumière émise par les sources lumineuses et pour l'émission de lumière formée en faisceau pour produire au moins une des fonctions d'éclairage, caractérisée en ce que le dispositif de guide de lumière est configuré selon l'une des revendications précédentes.
EP18194094.1A 2017-09-27 2018-09-12 Dispositif de guide de lumière d'un véhicule automobile et lampe de véhicule automobile muni d'un tel dispositif de guide de lumière Active EP3461687B1 (fr)

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DE102018113151B4 (de) 2018-06-01 2023-10-19 Automotive Lighting Reutlingen Gmbh Leuchtenmodul für eine Kraftfahrzeugleuchte
KR102602255B1 (ko) 2021-09-13 2023-11-16 현대모비스 주식회사 차량용 램프 및 그 램프를 포함하는 차량
CN118149302A (zh) * 2022-12-07 2024-06-07 本田技研工业株式会社 车辆用灯体

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FR2952163B1 (fr) * 2009-11-02 2013-08-23 Valeo Vision Dispositif d'eclairage ou de signalisation pour vehicule automobile comprenant un guide de lumiere
FR2966223B1 (fr) * 2010-10-19 2014-11-21 Valeo Vision Dispositif d'eclairage ou de signalisation
JP5719691B2 (ja) * 2011-05-26 2015-05-20 株式会社小糸製作所 車両用灯具
FR2998678B1 (fr) * 2012-11-29 2016-01-08 Valeo Vision Guide de lumiere pour un dispositif optique, notamment d'eclairage et/ou de signalisation
FR3003928A1 (fr) * 2013-03-27 2014-10-03 Valeo Vision Dispositif d'eclairage ou de signalisation pour vehicule automobile
DE102013212355B4 (de) * 2013-06-26 2018-07-19 Automotive Lighting Reutlingen Gmbh Kraftfahrzeugbeleuchtungseinrichtung mit einem eine Einkoppeloptik und eine Transport- und Umformoptik aufweisenden Lichtleiter
DE102013220106A1 (de) * 2013-10-02 2015-04-02 Automotive Lighting Reutlingen Gmbh Kfz-Beleuchtungseinrichtung
FR3042258A1 (fr) * 2015-10-09 2017-04-14 Valeo Iluminacion Sa Element lumineux transparent avec plusieurs sources lumineuses et une face de sortie commune
FR3042751B1 (fr) * 2015-10-23 2018-09-07 Automotive Lighting Rear Lamps France Dispositif d'eclairage et/ou de signalisation compact pour vehicule
FR3044778B1 (fr) * 2015-12-07 2019-08-16 Valeo Vision Element optique transparent avec facettes de renvoi pour duplication d'image

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