EP1605201B1 - Dispositif d'éclairage et/ou de signalisation à guide optique pour véhicule automobile - Google Patents

Dispositif d'éclairage et/ou de signalisation à guide optique pour véhicule automobile Download PDF

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Publication number
EP1605201B1
EP1605201B1 EP05291258A EP05291258A EP1605201B1 EP 1605201 B1 EP1605201 B1 EP 1605201B1 EP 05291258 A EP05291258 A EP 05291258A EP 05291258 A EP05291258 A EP 05291258A EP 1605201 B1 EP1605201 B1 EP 1605201B1
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EP
European Patent Office
Prior art keywords
prisms
lighting
optical guide
light
signalling device
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.)
Expired - Lifetime
Application number
EP05291258A
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German (de)
English (en)
French (fr)
Other versions
EP1605201A1 (fr
Inventor
David Bourdin
Antoine De Lamberterie
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.)
Valeo Vision SAS
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Valeo Vision SAS
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Filing date
Publication date
Priority claimed from FR0406376A external-priority patent/FR2871551B1/fr
Priority claimed from FR0406375A external-priority patent/FR2871550B1/fr
Application filed by Valeo Vision SAS filed Critical Valeo Vision SAS
Publication of EP1605201A1 publication Critical patent/EP1605201A1/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
    • F21S43/247—Light guides with a single light source 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
    • F21S43/20—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
    • F21S43/237—Light guides characterised by the shape of the light guide rod-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
    • F21S43/242—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 lighting and / or signaling device equipping a motor vehicle, comprising at least one optical guide capable of producing a homogeneous distribution of light.
  • This optical guide includes prisms that allow to deflect the light rays.
  • the invention has applications in the field of vehicles traveling on roads and, in particular, motor vehicles.
  • optical guides for propagating a light beam.
  • An example of a vehicle headlamp is described in the document US-A-6,107,916 .
  • This projector has a light source and an optical guide, placed near the light source and propagating the light beam emitted by this light source.
  • This light guide may run all or part of the mirror or reflector of the projector.
  • the optical guide 5 is a transparent material cylinder provided with prisms, which ensures the propagation of the light beam 4 from an end e1 close to the light source 3 to an end e2 opposite the end e1.
  • This optical guide 5 can have different geometric shapes. It can, for example, form a circle, an arc or be straight. In the case of figure 1 , the optical guide 5 follows the shape of the protective glass 2 of the projector 1.
  • each prism 8 has a substantially triangular shape. More specifically, each prism 8 has a triangle shape with a base 14, a facet 9 and a facet 10, flat and non-parallel. These facets 9 and 10 form between them an angle A, called the angle of the prism. The facets 9 and 10 form, with the axis X of the optical guide 5, respectively, angles B and C.
  • each prism 8 is a triangle, in its section, the bottom line 11 connects the base 14 of each triangle with the base of the consecutive triangle.
  • each prism is considered triangular in a 2-dimensional view.
  • FIGS. 12 and 13 show an example of a trajectory of a light ray propagating in an optical guide of the type described in the document. US-A-6,107,916 .
  • This light ray may be one of the light rays contained in the light beam 4 emitted by the light source 3.
  • the light beam propagates in the optical guide 5 in a straight initial trajectory 12 until he meets a facet of a prism.
  • This trajectory 12 forms, with the axis X of the optical guide 5, an angle of incidence E.
  • the trajectory 12 of the light beam is deflected by an angle F with respect to the initial trajectory 12.
  • the deflected trajectory of the light beam is referenced 13.
  • the deflection angle F between the trajectory 12 and the trajectory 13 is variable because bound especially to angles of the prisms.
  • the deflection 13 of the light beam responds to the principle of total reflection in an optical guide.
  • the principle of total reflection is an optical phenomenon that allows the transmission of light in an optical guide 5.
  • a light ray passes from one medium to another medium having a different refractive index, its direction is changed; it is the effect of refraction.
  • the index of the initial medium is greater than that of the final medium, the light ray 12 is no longer refracted, it is totally reflected: it is called total reflection.
  • the light beam 4 must be distributed over the entire length of the optical guide, that is to say between the end e1 and the end e2.
  • part of the light beam 4 is lost, with constant prisms, because the flow that passes through the section decreases as it spreads.
  • the amount of light lost is greater than at the end e1, close to the light source 3.
  • the light output is less than the end e2 that at the end e1 of the optical guide, which has the consequence that there is a natural decrease in the flow of light emitted along the optical guide. This decay is visible to anyone outside the vehicle.
  • the light beam undergoes total reflection.
  • a light ray touching one of the facets 9 or 10 of the prism 8 is reflected to the exit face 6 of the optical guide 5, by the principle of total reflection.
  • the light rays arriving at an angle not parallel to the X axis of the guide and, in particular, when they form an angle of 0 to 5 ° with this axis, are redirected to the exit face 6 of the optical guide through prisms 8.
  • the presence of the prisms 8 on the reflection face 7 of the optical guide 5 thus allows the light to come out in the right direction.
  • the light beam is reflected towards the exit face of the optical guide. In particular, it is reflected with a direction substantially perpendicular to the axis X of the optical guide 5, that is to say along the normal N to the axis X.
  • Another direction of reflection of the light ray can be obtained by modifying the angle B and / or the angle C of the prism.
  • this angle G can only be positive.
  • G the angle between the ray leaving the optical guide and the normal N
  • the optical guide 5 follows the profile of the protective glass 2 of the headlamp 1. Therefore, the reflected light rays illuminate on the sides of the vehicle in a direction Z.
  • the light beam 4 emitted by the light source 3 propagates in the optical guide 5 to its opposite end e2. Near this end e2, the light rays emitted perpendicularly to the axis of the optical guide light the road laterally, and are seen by any observer on the side of the road.
  • the angle between the optical guide 5 and the desired direction of light rays Y is not favorable. These light rays are lost, that is to say that they are reflected towards an uninteresting direction, which reduces the expected performance of the lighting or signaling device.
  • the invention aims to overcome the disadvantages of the techniques described above.
  • the object of the invention is in particular to improve the performance of the light guides, in particular to improve their visual appearance in the lit state and / or to obtain a greater flexibility in the choice of the angle of exit of the light rays. emitted by the light guide. Its purpose is thus to improve / better control the emission of light by lighting and / or signaling devices using light guides, in particular to improve the homogenization of the light distributed / emitted by these guides. .
  • the invention proposes an illumination and / or optical guide signaling device, in which the light is distributed in a uniform and homogeneous manner along the optical guide.
  • the invention proposes an optical guide having a reflection face provided with a succession of prisms, the angles between two consecutive prisms of the reflection face being, at least for some, truncated.
  • the output face has a profile with streaks, configuration detailed below.
  • pris indicates that these are geometric shapes usually defined by plane faces, but it is also within the scope of the invention to consider pseudo-primes, similar to prisms, but one of which faces is for example curved, more or less pronounced.
  • crushed profile indicates that the face in question is not entirely flat, that it includes reliefs, including but not only prisms.
  • the invention proposes a lighting and / or signaling device in which the optical guide comprises a serrated profile reflection face and a striated profile exit face.
  • the optical guide comprises a serrated profile reflection face and a striated profile exit face.
  • Such an exit face has the advantage of straightening an additional angle the light rays reflected by the reflection face, so as to obtain light rays coming out of the optical guide with a negative angle relative to the normal to the X axis (the negative sign is understood in relation to the mean direction of propagation of the light in the guide) , which offers a great flexibility in the choice of the exit angles of the light rays coming out of the optical guide.
  • the Figures 1 to 5 relate more specifically to the invention according to the first embodiment.
  • the figure 6 more specifically relates to the invention combining the first and second embodiments of the invention.
  • the invention will be described below with the aid of two examples, and in both cases relates to an illumination or signaling device with optical guide allowing a homogeneous and uniform distribution of the light.
  • the device of the invention can be a projector like that of the figure 1 or a signaling device. Whether it is a projector or a signaling device, the optical guide has characteristics ensuring a homogeneous and uniform appearance to the light at the exit of the guide optical. In the remainder of the description, a projector will be described, it being understood that it may also be a signaling device.
  • an example of an optical guide according to the invention which can be mounted in a projector of the figure 1 , is represented on the figure 3 .
  • the lighting device considered is a position light located in a projector at the front of a vehicle.
  • the optical guide, in this example is curved and forms a circle or an arc. It is understood that the optical guide, according to the invention, may have other shapes such as, for example, rectilinear curve with one or more curvatures ....
  • This figure 3 shows a sectional view of an optical guide 5 for propagating a light beam emitted by the light source 3.
  • the optical guide 5 has a circular section; it is understood that it can also, in other embodiments, have an elliptical section, square, oval, square or even.
  • each prism 8 has a substantially triangular shape; each prism comprises a base 14, a facet 9 and a facet 10, flat and non-parallel.
  • the facet 9 and the facet 10 of a prism 8 may be symmetrical with respect to an axis T perpendicular to the axis X of the optical guide, that is to say that they have dimensions and angles B and C identical on both sides of the bisector T. It is said that the optical guide is symmetrical prisms.
  • the facet 9 and the facet 10 may also be asymmetrical, that is, they have different dimensions and / or angles B and C. It is said that the optical guide is asymmetrical prisms.
  • the facet 10 of a prism 8 and the facet 9 of a consecutive prism together form a bottom angle D.
  • the bottom angle D of a prism 8 is truncated. In other words, at least some of the bottom angles D have a truncated area. This truncated area of the bottom angle D forms a flat surface 16.
  • a flat surface 16 is therefore a flat part of the bottom line curve 11 shown in dotted line on the figure 3 . In the example of the figure 3 the bottom line 11 coincides with the X axis of the optical guide 5.
  • the air primer 15 of the "clipped" type.
  • the clipping of the air prisms 15 is made according to a section of the vertices of said air prisms. This section is made along the curve of the bottom line 11.
  • the flats 16 of the bottom angles D are preferably of geometric shape of the rectangle type. They can have different dimensions. These dimensions of the flats can vary from one optical guide to another. They can also be variable within the same optical guide. In this case, the flats 16 may have different dimensions for each bottom angle D associated with each prism. Some bottom angles D may also have no flat surface 16. In this case, the optical guide 5 comprises both bottom angles D with flats 16 and bottom corners D without flat, for example alternately. For example, the size of the flats can be chosen decreasingly from the end e1 towards the end e2 of the optical guide in order to propagate a maximum of light rays towards the end e2.
  • the bottom angle D between two prisms 8 is truncated, which allows a light ray to propagate in the optical guide 5 without touching one of the facets 9 or 10 of the prism.
  • the light beam is reflected by the flat towards the output face FS so as to be totally reflected thereon. It then continues its propagation in the optical guide.
  • the end e1 of the optical guide For example, near the end e1 of the optical guide, a large portion of the light rays, emitted by the light source 3, are not reflected, because they do not meet facets 9 or 10 prism. These light rays continue their propagation in the optical guide 5 as if there were no prism. These light rays are thus directed towards the end e2 of the optical guide 5.
  • the properties of the reflection face FR are therefore modified by the presence of these flats. In this way, between the ends e1 and e2 of the optical guide 5, the luminous flux coming out of the optical guide can be uniformly distributed over the entire length of the optical waveguide by this flattening phenomenon.
  • the invention also makes it possible to obtain, at the output of the optical waveguide, a luminous flux distributed, voluntarily, in a non-uniform manner.
  • the non-uniform distribution is controlled to obtain a particular visual effect, for example an alternation of illuminated areas and unlit areas.
  • an optical guide 5 makes it possible to compensate for the decrease in the luminous flux passing through the optical guide between the end e1 and the end e2.
  • the uniform or non-uniform but controlled distribution of the luminous flux is preferably obtained by means of variable flats and, more specifically, the width of the flats along the variable X axis.
  • the size of the flats 16 is decreasing from the end e1 towards the end e2 of the optical guide 5. This reduction in the size of the flats 16 makes it possible to optimize the guiding of the light rays propagating in the optical guide 5.
  • the dimension of the flats 16 is large, thus allowing a large part of the light rays not to meet 9 or 10 facet prism and, thus, continue their propagation towards the end e2.
  • the size of the flats 16 is smaller and smaller until it is zero. There is then a large amount of light rays that meet one of the facets 9 or 10 of a prism. These light rays are then reflected towards the output face FS of the optical guide 5.
  • the size of the flats may be increasing from the end e1 to the end e2, or flat bottom angles may alternate with flat bottom angles, etc.
  • the height 18 of a prism 8 increases proportionally with the decrease in size of the corresponding flat 16.
  • the reflection face FR is contained between two curves, along the optical guide. One of the curves is the bottom line 11 and the other curve is the curve Z.
  • the two embodiments that have just been described allow one and the other to achieve a decrease in the size of the flats.
  • they offer the same light output and the same homogeneity of the light emitted by the optical guide 5 over its entire length.
  • the choice of one or other of these embodiments depends on the visual appearance, or aesthetic, wanted.
  • a first embodiment of this optical guide according to the invention is represented on the figure 7 .
  • the reflection face bears the reference FR and the output face bears the reference FS, with the same conventions as before.
  • the reflection face FR of the optical guide may be identical / similar to the reflection face of the optical guide described above.
  • This reflection face is provided with a succession of prisms 8 placed one after the other so as to form a serrated profile face.
  • Prisms 8 may be identical and symmetrical to each other, as in the prior art, or identical and asymmetrical or different from each other.
  • the prisms 8 are asymmetrical, as shown on the figure 7 , a reflection is obtained at an angle of about 90 ° with respect to the X axis for the light rays having an angle of incidence of the order of 10 to 40 ° with respect to the axis X of the optical guide.
  • an air prism 30 is formed by the prism background which precedes the prism 8 in transparent matter; this air prism 30 ensures a rectification of the incident light beam.
  • reflection face of the optical guide comprises prisms in transparent material 8 interposed by air prisms 30, then these air prisms 30 change the trajectory of the light rays by straightening the front light rays that they do not meet a prism in transparent matter 8.
  • a luminous ray of trajectory 17 adjusted with an angle of incidence E between 10 and 40 ° with respect to the axis X of the optical guide.
  • This light ray 17 is deflected and straightened along a path 18 by the air prism 30 before being reflected by the facet 10 of the prism 8. It is then redirected, following the trajectory 19, towards the output face FS of the optical guide in a preferred direction generally perpendicular to the axis X of the guide.
  • This light beam has an angle of incidence E 'of about 5 ° with respect to the axis X of the optical guide.
  • This light ray is therefore in the configuration of a total reflection by the prism in transparent material 8.
  • This ray 21 is reflected, by the facet 10 of the prism 8, at an angle of about 90 ° to the X axis to the output side FS of the optical guide.
  • the asymmetrical prisms have the same effect on the light ray than symmetrical prisms.
  • the asymmetric prisms have a rectifying effect, in addition to the reflection effect, when the light ray has an angle of incidence of 10 to 40 °.
  • Asymmetric prisms therefore make it possible to increase the luminous efficiency towards the exit face 6 of the optical guide.
  • the output face FS of the optical guide has a striated profile.
  • the output face FS has ridges which make it possible to further straighten the light rays at the output of the optical guide.
  • These grooves are reliefs (bosses or recesses) made in the outlet face 6 of the optical guide. They can be of different shapes.
  • these striations 24 each have a prism shape, that is to say that each stripe 24 has two facets 25 and 26, planes.
  • a facet 26 of a streak and a facet 25 of a consecutive streak together form a bottom angle H of about 90 °.
  • the facet 25 of a groove 24 forms, with the axis X of the optical guide, a stripe angle K of the order of 10 to 20 °. So, as shown on the figure 7 and 8 , the ridges 24 of the output face FS have a lower depth than the prisms 8 of the reflection face FR, this in order to keep the optical guide its guiding characteristics.
  • the striations form a bottom line 16 of the streaks.
  • the bottom of each streak 24 (as opposed to the top of the striations) forms with the bottom of the consecutive streaks a curve called the bottom line 16 of the streaks.
  • the streaks 24 are therefore contained between the bottom line 16 and a curve connecting the top of all the ridges 24, these two curves generally following the profile of the guide.
  • prism-shaped striations can be symmetrical or, on the contrary, asymmetrical as shown on the figure 7 .
  • the streaks are different, that is to say they have a stripe angle K and / or a bottom angle H which can vary between the end e1 of the guide and the end e2, in order to allow an evolutionary reflection of the light rays along the entire length of the guide.
  • each streak 24 of the output face FS is located opposite a prism 8 of the reflection face FR.
  • the streaks 24 of the output face FS therefore have a pitch identical to the pitch of the prisms 8 of the reflection face FR.
  • the active areas of the output face FS that is to say the facets 25 of the grooves 24, are located opposite (at least partially opposite) the active zones of the prisms 8 of the reflection face FR, that is to say facets 10 of the prisms 8.
  • the incoming trajectory light beam 17 undergoes, as previously explained, a first reflection by the facet 10 of a prism 8. It is then refracted by the facet 25 of a streak 24 and leaves the optical guide with a negative angle G relative to the normal N to the X axis. Similarly, the light ray 21 undergoes the same path from the facet 10 of the prism.
  • the exit angle G thus obtained depends, of course, on the slope of the groove 24. In the example of the figure 3 this exit angle G is of the order of -20 ° relative to the normal N.
  • This embodiment of the output face in prisms thus makes it possible to send light rays in a direction impossible to reach by total reflection on the prisms of the reflection face when the exit face is smooth. It makes it possible to obtain a negative angle G of approximately -25 ° relative to normal N.
  • each groove 24 has an arcuate shape.
  • each stripe 24 forms a kind of dome forming, with the consecutive streak, a bottom angle H.
  • the tangent at the base of the dome makes an angle K of 10 ° to 20 ° relative to the axis X of the guide optical.
  • Each stripe 24 of the output face FS is located opposite a prism 8 of the reflection face FR.
  • the streaks 24 therefore have a pitch identical to the pitch of the prisms 8 of the reflection face FR.
  • the ridges 24 of the output face FS are located opposite the active areas of the prisms 8 of the reflection face FR.
  • This embodiment has the advantage of allowing a controlled distribution of light around the normal N, which makes it possible to homogenize the appearance of the guide for an outside observer.
  • two examples of light rays have been represented on the figure 8 , which may have different directions at the output of the optical guide.
  • the first example of a light beam is the incoming light ray 17 having an angle of incidence E of 10 to 40 ° with respect to the X axis.
  • This light beam is first deflected by an air prism 30 then reflected by about 90 ° by a prism 8 to the output face FS.
  • said light beam undergoes a refraction of a negative angle G with respect to the normal N (path 20).
  • the second example of light ray is the incoming trajectory ray 21 having an angle of incidence E 'with the axis X.
  • This light ray 21 undergoes a first reflection by a prism 8 of the reflection face FR.
  • said light ray 21 undergoes refraction with a positive angle G relative to the normal N (path 23).
  • This profile in domes of the output face FS thus makes it possible to distribute the light laterally in several directions.
  • each groove 24 comprises a curved facet 28 and a flat facet 27, each curved facet 28 being consecutive to a plane facet 27.
  • the curved facet 28 and the plane facet 27 of a consecutive streak together form a bottom angle H of the order of 90 °.
  • the tangent to the curved facet 28 forms, with the axis X of the optical guide, a stripe angle K of the order of 10 to 20 °.
  • the striations are contiguous with each other, that is to say a streak is contiguous to the next streak.
  • This third embodiment combines features of the first embodiment with features of the second embodiment, which optimizes the guidance of the light rays through the optical guide, while ensuring a good homogeneity of the light and a sending light in directions inaccessible classically.
  • the first example of light ray 17 is refracted, by a streak 24 of the exit face 6, with a negative angle G with respect to the normal N.
  • the second example of light ray 21 leaves the optical guide with a negative angle G relative to the normal N, different from the angle G formed by the light ray 20.
  • the value of the exit angle G differs depending on the location on the streak. It is therefore understood that the exit angle G varies as a function of the location, on the facet 28 of the streak 24, of the point of contact of the light beam with the streak. In other words, the value of the exit angle depends on the radius of curvature of the curved facet 28.
  • each groove 24 comprises a curved facet 28 and a flat facet 27, each curved facet 28 being separated from the flat facet 27 of the next streak by a flat surface 29.
  • the striations 24 are therefore separated from each other by flats. 29.
  • the active zone of each stripe 24, that is to say the curved facet 28, is placed opposite (at least partially) to the active zone of the prism 8, that is to say of the facet 10 of the prism in order to make the refraction by the striations as effective as possible.
  • the flat part 29, in this variant makes it possible to propagate at the end e2, the light rays not refracted by the striations 24.
  • the exit face 6 has ridges that allow to straighten the light rays at the output of the optical guide, that is to say to get them out of the optical guide with a negative angle relative to the normal N to the X axis of the guide.
  • the reflection face comprises prisms such as those described using the figure 4 especially. Associating the two embodiments of the invention on the same light guide is very advantageous.
  • the streaks of the exit face FS can be of different shapes, for example, in the form of prisms or domes or a combination of prisms and domes, as seen above with the Figures 7 and 8 . They are located opposite the active areas of the prisms 8 of the reflection face.
  • the prisms of the reflection face can be those described in figure 3, 4 or 5 .
  • the presence of flats 15 in the optical guide enables a light beam to propagate in the optical guide without touching one of the facets 9 or 10 of the prisms 8 of the reflection face FR.
  • the light beam is reflected towards the output face of the light guide, further down the guide, which distributes the light flux uniformly between the ends e1 and e2 of the light guide.
  • the examples described above, and, more generally, the light guides according to the invention have preferably circular sections, insofar as such a section is the most appropriate in terms of optical guidance.
  • This section is also very suitable in terms of focusing of the light.
  • the invention also relates to light guides of different section, for example a conical section, for example of elliptical, hyperbolic or parabolic, at least partially, or oval. Sections parallelogram type, square, rectangle are also possible but less interesting in terms of light guidance.
  • the striations and / or the prisms may have variable widths (that is to say, affect more or less the width of the face in question, either wholly or partially, or with a variable width along the length of the guide).
  • the invention therefore proposes two light guide embodiments, alternative, or cumulative, to have a better visual homogeneity of the guide once lit and / or have more control over the orientation of the light emitted by the light guide.
  • To cumulate the two achievements is very advantageous, because they contribute to the same goal, that of improving the visual aspect of the light guides once lit.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Light Guides In General And Applications Therefor (AREA)
  • Optical Elements Other Than Lenses (AREA)
  • Planar Illumination Modules (AREA)
EP05291258A 2004-06-11 2005-06-10 Dispositif d'éclairage et/ou de signalisation à guide optique pour véhicule automobile Expired - Lifetime EP1605201B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
FR0406376A FR2871551B1 (fr) 2004-06-11 2004-06-11 Dispositif d'eclairage ou de signalisation a guide optique pour vehicule automobile
FR0406375 2004-06-11
FR0406375A FR2871550B1 (fr) 2004-06-11 2004-06-11 Dispositif d'eclairage ou de signalisation a guide optique pour vehicule automobile
FR0406376 2004-06-11

Publications (2)

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EP1605201A1 EP1605201A1 (fr) 2005-12-14
EP1605201B1 true EP1605201B1 (fr) 2010-07-14

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US (1) US7437050B2 (enrdf_load_stackoverflow)
EP (1) EP1605201B1 (enrdf_load_stackoverflow)
JP (1) JP2005353599A (enrdf_load_stackoverflow)
AT (1) ATE474184T1 (enrdf_load_stackoverflow)
DE (1) DE602005022254D1 (enrdf_load_stackoverflow)

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CZ307329B6 (cs) * 2006-05-15 2018-06-13 Varroc Lighting Systems, s.r.o. Světelné zařízení pro motorové vozidlo, obsahující planární světlovod
AU2007316111A1 (en) * 2006-10-31 2008-05-08 Oy Modines Ltd. Light outcoupling structure for a lighting device
US7695179B2 (en) 2007-03-16 2010-04-13 Visteon Global Technologies, Inc. Illuminating device
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US7437050B2 (en) 2008-10-14
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ATE474184T1 (de) 2010-07-15
JP2005353599A (ja) 2005-12-22

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