| 摘要 |
The invention relates to a multi-layer body (1) comprising a first layer (13) having a multiplicity of first zones (21), which are respectively separated from one another by one or a plurality of transparent second zones (22). The multi-layer body has a second layer (14) composed of a transparent material, said second layer being arranged below the first layer (13), and a reflection layer (15) arranged below the second layer (14). The second layer (14) has a multiplicity of third zones (23), in each of which a microstructure (17) is impressed into the interface—facing away from the first layer—between the second layer (14) and the reflection layer, which is covered with the reflection layer (15). Each of the microstructures (17) is configured such that it reflects back and/or diffracts back light incident perpendicularly with respect to the plane spanned by the first layer from the direction of the first layer in the region of the respective third zone (23) onto a region of the first layer whose area is smaller than the area of the respective third zone (23) by at least a factor of 10. The microstructures (17) are arranged in accordance with a microstructure grid having a distance between adjacent microstructures in a second spatial direction of less than 300 μm. |
