Light deflection device, method for manufacturing a light deflection device and illumination device
Assigneetemicon GmbH
InventorOliver Humbach
Life of this patent
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Abstract
A light deflection device including a flat, transparent light guide and a microstructure provided at least in regions on the light guide for decoupling light coupled into the light guide. The microstructure has microstructure elements and the microstructure elements in each case have a substantially point-like or line-like geometry for contact with the light guide. Further, a method for manufacturing a light deflection device, an illumination device, and use of a light deflection device or an illumination device are disclosed.
Claims20
A light deflection device, comprising:
- a flat, transparent light guide
- a microstructure provided at least in regions on the light guide for decoupling light coupled into the light guide, and
- a transparent cover layer applied flat at least in regions on the light guide,
- wherein the microstructure has microstructure elements and wherein the microstructure elements in each case have a substantially point-like geometry for contact with the light guide, wherein the width of the effective contact region of the microstructure elements with the light guide in the region of the substantially point-like geometry viewed in cross-section is at most 20 μm, wherein the microstructure is provided between the cover layer and the light guide, wherein the cover layer has the microstructure for decoupling light coupled into the light guide on the surface facing the light guide and wherein at least a part of the microstructure elements of the microstructure are convexly curved at least in sections viewed in cross-section.
A method for manufacturing a light deflection device, the method comprising the steps:
- providing a flat, transparent light guide
- providing the light guide with a microstructure for decoupling light coupled into the light guide, and
- applying a flat, transparent cover layer at least in regions on the light guide, wherein the microstructure is provided between the light guide and the cover layer,
- wherein the microstructure has microstructure elements, wherein the microstructure elements in each case have a substantially point-like or line-like geometry for contact with the light guide, wherein the width of the effective contact region of the microstructure elements with the light guide in the region of the substantially point-like geometry viewed in cross-section is at most 20 μm, wherein the cover layer has the microstructure for decoupling light coupled into the light guide on the surface facing the light guide and wherein at least a part of the microstructure elements of the microstructure are convexly curved at least in sections viewed in cross-section.
Dependencies are inferred from the claim text.