WO2024023269A1 - Light guide unit, lighting device and motor vehicle - Google Patents

Light guide unit, lighting device and motor vehicle Download PDF

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Publication number
WO2024023269A1
WO2024023269A1 PCT/EP2023/070932 EP2023070932W WO2024023269A1 WO 2024023269 A1 WO2024023269 A1 WO 2024023269A1 EP 2023070932 W EP2023070932 W EP 2023070932W WO 2024023269 A1 WO2024023269 A1 WO 2024023269A1
Authority
WO
WIPO (PCT)
Prior art keywords
light guide
guide unit
light
present
arc
Prior art date
Application number
PCT/EP2023/070932
Other languages
French (fr)
Inventor
Haiqing Zhou
Lei Fan
Original Assignee
Valeo Vision
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Valeo Vision filed Critical Valeo Vision
Publication of WO2024023269A1 publication Critical patent/WO2024023269A1/en

Links

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
    • F21S43/10—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
    • F21S43/242—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 the technical field of vehicle lamps, in particular to a light guide unit, a lighting device and a motor vehicle.
  • Lighting devices are widely used in various fields to provide light rays for lighting and/or optical indication functions.
  • lighting devices such as vehicle lamps are used in motor vehicles to ensure safe driving.
  • various types of vehicle lamps are often required to implement different functions, including headlights, fog lights, tail lights, turn signal lights, brake lights, side marker lights, parking lights, etc.
  • an object of the present invention is to propose an optical element, a lighting device and a motor vehicle, which can at least partially solve the problems mentioned above.
  • an optical assembly comprising: a light incident portion, which is located on an end surface of one side of a light guide unit, and is configured to receive light from a light source; a light exit portion, which is located on the front surface of the light guide unit, and is configured to allow light entering the light guide unit to exit; and a side surface, which is used to connect the front surface and the rear surface of the light guide unit, wherein the side surface has a striped structure.
  • the light guide unit is a plateshaped light guide.
  • the striped structure has an arcshaped section.
  • the arc-shaped section protrudes outwardly relative to the side surface.
  • the arc-shaped section is inwardly recessed relative to the side surface.
  • a pitch of the arc-shaped section is substantially equal to a radius corresponding to the arcshaped section.
  • an angle corresponding to the arcshaped section is about 50° .
  • the light guide unit is made of a transparent material.
  • a lighting device comprising the light guide unit as described above.
  • a motor vehicle comprising the lighting device described above. According to the solutions of the present invention, a better divergence effect can be obtained, so that the side surface of the light guide unit has a uniform light emission effect.
  • FIG. 1 shows a schematic view of a light guide unit 100 according to an embodiment of the present invention
  • FIG. 2 shows a cross-sectional view of a striped structure of the light guide unit 100 according to the embodiment of the present invention
  • FIG. 3 shows another cross-sectional view of the striped structure of the light guide unit 100 according to the embodiment of the present invention.
  • FIG. 4 shows an enlarged view of the striped structure in FIG. 2.
  • a light guide unit 100 may be used for one or more of the functions of a turn signal light, a brake light, a side marker light, a parking light, a reversing light, a daytime running light, a position light, a grille light, etc. , and the light function is not particularly limited here.
  • the lighting device may include at least one light guide unit 100 according to the present invention.
  • Each light guide unit 100 is used to realize a specific light function, and the light guide units may be arranged in a staggered manner to realize a specific beam pattern.
  • the lighting device may include any number of light guide units 100, and these light guide units 100 may be arranged arbitrarily according to beam pattern requirements.
  • FIG. 1 shows a schematic view of a light guide unit 100 according to an embodiment of the present invention
  • FIG. 2 shows a cross-sectional view of a striped structure of the light guide unit 100 according to the embodiment of the present invention
  • FIG. 3 shows another cross-sectional view of the striped structure of the light guide unit 100 according to the embodiment of the present invention
  • FIG. 4 shows an enlarged view of the striped structure in FIG. 2.
  • the light guide unit 100 includes: a light incident portion 101, which is located on an end surface of one side of a light guide unit 100, and is configured to receive light from a light source; a light exit portion 102, which is located on the front surface of the light guide unit 100, and is configured to allow light entering the light guide unit 102 to exit; and a side surface 103, which is used to connect the front surface and the rear surface of the light guide unit 100, wherein the side surface 103 has a striped structure 104.
  • the side surface of a traditional light guide unit has a planar structure. Since light from a point light source cannot be fully diverged, a bright spot will be generated at a position of the side surface of the light guide unit, resulting in an uneven light emission effect on the side surface.
  • the setting of the frame structure will affect the aesthetics of the vehicle lamp shape.
  • the frame structure also needs a corresponding support structure, which will further increase the size of the light guide unit, thereby increasing the size and weight of the lighting device.
  • the light guide unit 100 of the present invention by setting the striped structure 104 on the side surface 103, an incident light beam can be uniformly diverged to exit at a position along a section, so that the bright spot can be effectively avoided to obtain a uniform lighting effect.
  • the side surface 103 has a uniform lighting effect, no additional frame structure is required, which can greatly improve the aesthetics of the vehicle lamp shape.
  • the light guide unit 100 is a plateshaped light guide.
  • the light guide unit 102 is substantially plate-shaped, wherein the light from the light source enters the interior of the light guide unit 100 from the light incident portion 101 located at the end surface of the light guide unit 100, and propagates between the front surface and the rear surface of the light guide unit 100 toward the opposite end of the light incident portion 101.
  • the light exits from the front surface of the light guide unit 100 along a main light exit direction, that is to say, the front surface is used as the light exit portion of the light guide unit 100, thereby realizing a surface-light-emitting effect.
  • the light source cooperates with the light guide unit 100 to realize the surface-light-emitting effect, so that the cost can be greatly reduced compared with an OLED solution.
  • the light from the light source enters the interior of the light guide unit 100 and then propagates through total reflection.
  • the interior of the light guide unit 100 may include scattering particles. The light from the light source may be scattered in different directions by the scattering particles, thereby destroying the total reflection condition of the light, so that the light exits from the front surface of the light guide unit 100.
  • This light guide unit 100 with scattering particles has good light diffusion properties and can achieve a very uniform light lighting effect.
  • this type of light guide unit 100 may be, for example, a light guide made of polymethylmethacrylate (PMMA) , such as a light guide with the grade of LED 8N LD12, LD24, LD48 or LD96 ; or may be, for example, a light guide made of polycarbonate (PC), such as a light guide with the grade of EL2245.
  • PMMA polymethylmethacrylate
  • PC polycarbonate
  • the colour of the light guide unit may be selected according to needs, such as, but not limited to, colourless, light red, red, etc.
  • an optical decoupling element may be provided on the rear surface of the light guide unit 100 to destroy the total reflection condition of light.
  • the optical decoupling element include, but are not limited to, protrusions, depressions, saw teeth, ridges, stripes, squares, etc.
  • the striped structure 104 on the side surface 103 has an arc-shaped section.
  • the striped structure with the arc-shaped section can obtain a better divergence effect, so that the light emission is more uniform.
  • the arcshaped section participates in the vertical deviation of the light to ensure the uniformity of the light emission effect.
  • the design flexibility can be increased according to the solution of the present invention.
  • the arc-shaped section protrudes outwardly relative to the side surface 103.
  • the arc-shaped section may also be inwardly recessed relative to the side surface 103.
  • the arc-shaped section that protrudes outwardly or is inwardly recessed relative to the side surface 103 can avoid the formation of a clear boundary line, improving the light divergence effect, thereby improving the uniformity.
  • the arc-shaped section may also have other shapes, which are not specifically limited in the present invention.
  • a pitch P of the arc-shaped section is substantially equal to a radius R1 corresponding to the arc-shaped section, so as to better ensure the diffusion effect.
  • the pitch P is the width of the striped structure 104 corresponding to the side surface.
  • the striped structure 104 has a pitch of 0. 1 to 0. 5 mm.
  • the size of the radius R1 corresponding to the arc-shaped section is also 0. 1 to 0. 5 mm.
  • An angle a corresponding to the arc-shaped section is preferably about 50° , so as to ensure that the light diverges within a proper range.
  • two ends of an arc-shaped part of the arc-shaped section are each connected with another arc-shaped part with a radius R2, namely, a processed arc-shaped part 105, and the size of R2 is preferably less than or equal to 0. 5 mm.
  • a radius R2 namely, a processed arc-shaped part 105
  • the size of the radius R2 may be adjusted according to actual needs, and is not specifically limited in the present invention.
  • a better diverging effect can be obtained, so that the side surface 104 of the light guide unit 100 has a uniform light emission effect.
  • the quality of the light emitting assembly and the space occupied by it can be reduced, so that a more compact, lightweight and changeable lighting device is obtained.
  • a 3D light emission effect may be advantageously obtained by stacking a plurality of light guide units 100 according to the present invention.
  • the present invention further includes a lighting device, including any one of the light guide units 100 as described above.
  • the present invention further includes a motor vehicle, including the lighting device as described above.
  • the lighting device or the motor vehicle according to the present invention has at least the beneficial effects brought by the aforementioned light guide unit 100.

Abstract

The present invention relates to an optical assembly, comprising: a light incident portion (101), which is located on an end surface of one side of a light guide unit (100), and is configured to receive light from a light source; a light exit portion (102), which is located on the front surface of the light guide unit (100), and is configured to allow light entering the light guide unit (102) to exit; and a side surface (103), which is used to connect the front surface and the rear surface of the light guide unit (100), wherein the side surface (103) has a striped structure (104). The present invention further provides a lighting device and a motor vehicle.

Description

LIGHT GUIDE UNIT, LIGHTING DEVICE AND MOTOR VEHICLE
Technical Field
The present invention relates to the technical field of vehicle lamps, in particular to a light guide unit, a lighting device and a motor vehicle.
Background Art
Lighting devices are widely used in various fields to provide light rays for lighting and/or optical indication functions. For example, lighting devices such as vehicle lamps are used in motor vehicles to ensure safe driving. In motor vehicles, various types of vehicle lamps are often required to implement different functions, including headlights, fog lights, tail lights, turn signal lights, brake lights, side marker lights, parking lights, etc.
With the improvement of aesthetic level, the requirements for the shape design of vehicle lamps are getting higher and higher. The presence of non-light-emitting parts will affect the overall appearance of the vehicle lamps, making it difficult to meet customer requirements.
Summary of the Invention
Thus, an object of the present invention is to propose an optical element, a lighting device and a motor vehicle, which can at least partially solve the problems mentioned above.
Disclosed in the present invention is an optical assembly, comprising: a light incident portion, which is located on an end surface of one side of a light guide unit, and is configured to receive light from a light source; a light exit portion, which is located on the front surface of the light guide unit, and is configured to allow light entering the light guide unit to exit; and a side surface, which is used to connect the front surface and the rear surface of the light guide unit, wherein the side surface has a striped structure.
In some embodiments, the light guide unit is a plateshaped light guide.
In some embodiments, the striped structure has an arcshaped section.
In some embodiments, the arc-shaped section protrudes outwardly relative to the side surface.
In some embodiments, the arc-shaped section is inwardly recessed relative to the side surface.
In some embodiments, a pitch of the arc-shaped section is substantially equal to a radius corresponding to the arcshaped section.
In some embodiments, an angle corresponding to the arcshaped section is about 50° .
In some embodiments, the light guide unit is made of a transparent material.
According to another aspect of the present invention, a lighting device is further provided, comprising the light guide unit as described above.
According to another aspect of the present invention, a motor vehicle is further provided, comprising the lighting device described above. According to the solutions of the present invention, a better divergence effect can be obtained, so that the side surface of the light guide unit has a uniform light emission effect.
Description of the Drawings
The above-described characteristics, technical features and advantages of the present invention and modes of implementation thereof will be further explained below in a clear and easy-to-understand manner through a description of preferred embodiments with reference to the drawings, wherein FIG. 1 shows a schematic view of a light guide unit 100 according to an embodiment of the present invention;
FIG. 2 shows a cross-sectional view of a striped structure of the light guide unit 100 according to the embodiment of the present invention;
FIG. 3 shows another cross-sectional view of the striped structure of the light guide unit 100 according to the embodiment of the present invention; and
FIG. 4 shows an enlarged view of the striped structure in FIG. 2.
Detailed Description of the Invention
Embodiments of the present utility model will be illustratively described below. As should be appreciated by those skilled in the art, the embodiments described may be modified in various ways without departing from the concept of the present invention. Thus, the drawings and description are essentially exemplary rather than limiting. In the following text, identical reference numerals generally denote elements with identical or similar functions.
A light guide unit 100 according to an embodiment of the present invention may be used for one or more of the functions of a turn signal light, a brake light, a side marker light, a parking light, a reversing light, a daytime running light, a position light, a grille light, etc. , and the light function is not particularly limited here.
The lighting device may include at least one light guide unit 100 according to the present invention. Each light guide unit 100 is used to realize a specific light function, and the light guide units may be arranged in a staggered manner to realize a specific beam pattern. Of course, it can be understood that the lighting device may include any number of light guide units 100, and these light guide units 100 may be arranged arbitrarily according to beam pattern requirements.
FIG. 1 shows a schematic view of a light guide unit 100 according to an embodiment of the present invention; FIG. 2 shows a cross-sectional view of a striped structure of the light guide unit 100 according to the embodiment of the present invention; FIG. 3 shows another cross-sectional view of the striped structure of the light guide unit 100 according to the embodiment of the present invention; and FIG. 4 shows an enlarged view of the striped structure in FIG. 2.
As shown in FIG. 1, the light guide unit 100 includes: a light incident portion 101, which is located on an end surface of one side of a light guide unit 100, and is configured to receive light from a light source; a light exit portion 102, which is located on the front surface of the light guide unit 100, and is configured to allow light entering the light guide unit 102 to exit; and a side surface 103, which is used to connect the front surface and the rear surface of the light guide unit 100, wherein the side surface 103 has a striped structure 104.
The side surface of a traditional light guide unit has a planar structure. Since light from a point light source cannot be fully diverged, a bright spot will be generated at a position of the side surface of the light guide unit, resulting in an uneven light emission effect on the side surface. In order to avoid affecting the appearance of the vehicle lamp after being lit up, it is usually necessary to set a frame structure on the side surface of the light guide unit so that the side surface of the light guide unit is invisible when viewed from the outside. However, the setting of the frame structure will affect the aesthetics of the vehicle lamp shape. Besides, the frame structure also needs a corresponding support structure, which will further increase the size of the light guide unit, thereby increasing the size and weight of the lighting device.
According to the light guide unit 100 of the present invention, by setting the striped structure 104 on the side surface 103, an incident light beam can be uniformly diverged to exit at a position along a section, so that the bright spot can be effectively avoided to obtain a uniform lighting effect. In the case that the side surface 103 has a uniform lighting effect, no additional frame structure is required, which can greatly improve the aesthetics of the vehicle lamp shape.
In one example, the light guide unit 100 is a plateshaped light guide. As shown in FIG. 1, the light guide unit 102 is substantially plate-shaped, wherein the light from the light source enters the interior of the light guide unit 100 from the light incident portion 101 located at the end surface of the light guide unit 100, and propagates between the front surface and the rear surface of the light guide unit 100 toward the opposite end of the light incident portion 101. During this process, the light exits from the front surface of the light guide unit 100 along a main light exit direction, that is to say, the front surface is used as the light exit portion of the light guide unit 100, thereby realizing a surface-light-emitting effect.
According to the embodiment of the present invention, the light source cooperates with the light guide unit 100 to realize the surface-light-emitting effect, so that the cost can be greatly reduced compared with an OLED solution.
In some examples, the light from the light source enters the interior of the light guide unit 100 and then propagates through total reflection. In order to allow the light to exit from the front surface of the light guide unit 100, the interior of the light guide unit 100 may include scattering particles. The light from the light source may be scattered in different directions by the scattering particles, thereby destroying the total reflection condition of the light, so that the light exits from the front surface of the light guide unit 100. This light guide unit 100 with scattering particles has good light diffusion properties and can achieve a very uniform light lighting effect. As a non-limiting example, this type of light guide unit 100 may be, for example, a light guide made of polymethylmethacrylate (PMMA) , such as a light guide with the grade of LED 8N LD12, LD24, LD48 or LD96 ; or may be, for example, a light guide made of polycarbonate (PC), such as a light guide with the grade of EL2245. The colour of the light guide unit may be selected according to needs, such as, but not limited to, colourless, light red, red, etc.
In an alternative example, an optical decoupling element may be provided on the rear surface of the light guide unit 100 to destroy the total reflection condition of light. Examples of the optical decoupling element include, but are not limited to, protrusions, depressions, saw teeth, ridges, stripes, squares, etc.
In one example, the striped structure 104 on the side surface 103 has an arc-shaped section. The striped structure with the arc-shaped section can obtain a better divergence effect, so that the light emission is more uniform. The arcshaped section participates in the vertical deviation of the light to ensure the uniformity of the light emission effect. Thus, the design flexibility can be increased according to the solution of the present invention.
In one example, as shown in FIG. 2, the arc-shaped section protrudes outwardly relative to the side surface 103. In another example, as shown in FIG. 3, the arc-shaped section may also be inwardly recessed relative to the side surface 103. The arc-shaped section that protrudes outwardly or is inwardly recessed relative to the side surface 103 can avoid the formation of a clear boundary line, improving the light divergence effect, thereby improving the uniformity. Of course, in other examples, the arc-shaped section may also have other shapes, which are not specifically limited in the present invention.
In a specific example, as shown in FIG. 4, taking the arc-shaped section protruding outwardly relative to the side surface 103 as an example, a pitch P of the arc-shaped section is substantially equal to a radius R1 corresponding to the arc-shaped section, so as to better ensure the diffusion effect. The pitch P is the width of the striped structure 104 corresponding to the side surface. Preferably, the striped structure 104 has a pitch of 0. 1 to 0. 5 mm. When the pitch P of the striped structure is within this range, better uniformity can be obtained compared with other sizes. Correspondingly, the size of the radius R1 corresponding to the arc-shaped section is also 0. 1 to 0. 5 mm.
An angle a corresponding to the arc-shaped section is preferably about 50° , so as to ensure that the light diverges within a proper range.
According to the light guide unit 100 of the present invention, two ends of an arc-shaped part of the arc-shaped section are each connected with another arc-shaped part with a radius R2, namely, a processed arc-shaped part 105, and the size of R2 is preferably less than or equal to 0. 5 mm. Such a design facilitates the production and processing of the striped structure 104, reducing processing difficulty, and increasing production efficiency. The size of the radius R2 may be adjusted according to actual needs, and is not specifically limited in the present invention.
According to the solutions of the present invention, a better diverging effect can be obtained, so that the side surface 104 of the light guide unit 100 has a uniform light emission effect. There is no need to set up an additional frame structure, so that the shape of the light emitting assembly is improved, facilitating the shape design of the vehicle lamp. Besides, the quality of the light emitting assembly and the space occupied by it can be reduced, so that a more compact, lightweight and changeable lighting device is obtained.
In another example, a 3D light emission effect may be advantageously obtained by stacking a plurality of light guide units 100 according to the present invention.
According to an embodiment of the present invention, the present invention further includes a lighting device, including any one of the light guide units 100 as described above.
In addition, according to an embodiment of the present invention, the present invention further includes a motor vehicle, including the lighting device as described above.
The lighting device or the motor vehicle according to the present invention has at least the beneficial effects brought by the aforementioned light guide unit 100.
The present invention is not limited to the structure described above, and various other variants may also be used. Although the present invention has been described by means of a limited number of embodiments, those skilled in the art having the benefit of the present disclosure could devise other embodiments without departing from the scope of protection of the present invention disclosed herein. Thus, the scope of protection of the present invention should be defined by the attached claims only.

Claims

1. Light guide unit (100), characterized by comprising: a light incident portion (101), which is located on an end surface of one side of the light guide unit (100), and is configured to receive light from a light source; a light exit portion (102), which is located on the front surface of the light guide unit (100), and is configured to allow light entering the light guide unit (102) to exit; and a side surface (103), which is used to connect the front surface and the rear surface of the light guide unit (100), wherein the side surface (103) has a striped structure (104).
2. Light guide unit (100) according to Claim 1, characterized in that the light guide unit (102) is a plateshaped light guide.
3. Light guide unit (100) according to Claim 1, characterized in that the striped structure (104) has an arcshaped section.
4. Light guide unit (100) according to Claim 3, characterized in that the arc-shaped section protrudes outwardly relative to the side surface (103).
5. Light guide unit (100) according to Claim 3, characterized in that the arc-shaped section is inwardly recessed relative to the side surface (103).
6. Light guide unit (100) according to Claim 3, characterized in that a pitch of the arc-shaped section is substantially equal to a radius corresponding to the arc- shaped section.
7. Light guide unit (100) according to Claim 6, characterized in that an angle corresponding to the arcshaped section is about 50° .
8. Light guide unit (100) according to Claim 1, characterized in that the light guide unit (102) is made of a transparent material.
9. Lighting device, characterized by comprising the light guide unit (100) according to any one of Claims 1 to 8. 10. Vehicle, comprising the lighting device according to
Claim 9.
PCT/EP2023/070932 2022-07-28 2023-07-27 Light guide unit, lighting device and motor vehicle WO2024023269A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202221964491.8 2022-07-28
CN202221964491.8U CN218645378U (en) 2022-07-28 2022-07-28 Light guide unit, lighting device and motor vehicle

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EP3217080A1 (en) * 2016-03-10 2017-09-13 Valeo Vision Optical guide with optical means of light dispersion
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DE102017128841A1 (en) * 2017-12-05 2019-06-06 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Light guide body for a lighting device of a motor vehicle
DE102020204577A1 (en) * 2020-04-09 2021-10-14 Volkswagen Aktiengesellschaft Light guide arrangement, edge decoupling element and lighting system for a vehicle

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5668913A (en) * 1994-10-19 1997-09-16 Tai; Ping-Kaung Light expanding system for producing a linear or planar light beam from a point-like light source
EP1684002A2 (en) * 2005-01-24 2006-07-26 Schefenacker Vision Systems Germany GmbH Lighting unit with light distributor
EP2527722A2 (en) * 2011-05-27 2012-11-28 Automotive Lighting Reutlingen GmbH Lighting device for a motor vehicle
DE102011051978A1 (en) * 2011-07-20 2013-01-24 Tap Ltd. Taillight for e.g. bicycle, has lens that is provided on luminous surface of light guide with respect to LED, and LED that is arranged in plane with respect to reflective surface of light guide
EP3062015A2 (en) * 2015-02-26 2016-08-31 Valeo Iluminacion Light device of a motor vehicle
EP3217080A1 (en) * 2016-03-10 2017-09-13 Valeo Vision Optical guide with optical means of light dispersion
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