Lighting device with 3D-effect

Patent metadata

Field	Value
Publication number	US-9423094-B2
Application number	US-201214009675-A
Country	US
Kind code	B2
Filing date	Mar 30, 2012
Priority date	Apr 4, 2011
Publication date	Aug 23, 2016
Grant date	Aug 23, 2016

Abstract

A lighting device for a motor vehicle includes several flat light-conducting elements that are arranged in layers one behind the other in a layer arrangement. The individual light-conducting elements do not touch one another and are clearly spaced apart from one another. Each of the light-conducting elements includes a light-scattering structural element. An illuminating device is optically coupled to each of the light-conducting elements in order to couple light into the light-conducting elements. Light is coupled out of the light-conducting elements by means of the structural elements.

First claim

The invention claimed is:

1. A lighting device for a motor vehicle comprising:
plural, flat light conducting elements arranged in spaced apart relationship one behind the other to form a layered arrangement, without contacting one another, each of said light conducting elements having at least two light scattering structural elements;
an illumination device optically coupled to each of the light conducting elements and comprising plural light sources, each of said plural light sources exclusively illuminating one of the structural elements or exclusively illuminating one subgroup of the structural elements in each respective one of the light conducting elements so that only the one structural element or the one subgroup of the structural elements lights up when illuminated by the light source, said subgroup consisting of less than all of the structural elements respectively present in the respective light conducting element; and
a control device for controlling the illumination device, so as to generate a sequential light by means of the plural light sources.

2. The lighting device of claim 1 , wherein the structural elements are of same geometric shape.

3. The lighting device of claim 1 , wherein, the light conducting elements are essentially of same size.

4. The lighting device of claim 1 , wherein all of the light conducting elements are configured band-shaped.

5. The lighting device of claim 1 , wherein all of the light conducting elements are three-dimensionally curved in a same manner.

6. The lighting device of claim 1 , further comprising a light conductor arranged on an edge of each of the light conducting elements, said light conductor coupling light into the edge of the light conducting elements.

7. The lighting device of claim 1 , wherein the light conducting elements have a common surface normal and each of the structural elements in a respective one of the light conducting elements has a different distance to the surface normal.

8. An assist system for a motor vehicle, comprising the lighting device of claim 1 , wherein the lighting device is constructed for generating a visual signal.

9. The assist system of claim 8 , wherein the signal is a warning signal.

10. A motor vehicle, comprising the assist system of claim 8 .

11. A motor vehicle, comprising the lighting device of claim 1 .

Assignees

• Reuschel Jens Dietmar
• Schmitz Christoph
• Audi Ag

Inventors

• Reuschel Jens Dietmar
• Schmitz Christoph

Classifications

• G02B6/0076

  Stacked arrangements of multiple light guides of the same or different cross-sectional area · CPC title

• F21S48/2281 Primary

  Mechanical Engineering · mapped topic

• B60Q3/004

  Operations & Transport · mapped topic

• B60Q3/044

  Operations & Transport · mapped topic

• B60Q9/008

  for anti-collision purposes · CPC title