| 摘要 |
The invention relates to a security system, based on the optical identification of highly specific, spatially appearing microstructures in a substrate using a micro-optical magnification system that is integrated in the substrate. Known systems disclose a microlens array having a plurality of optical axes, which is disposed over a micro-image array and generates only a virtual spatial overall image. For a highly complex spatial image, which cannot be imitated or only with extreme effort, the invention is characterized in that the micro-optical magnification system (05) has a single optical axis (15) and the micro-structure is formed directly by the spatially configured surface of at least one individual micro-particle or nano-particle (02), which is embedded in a transparent embedding medium (03) on the optical axis (15) of the micro-optical magnification system (05). With the invention, thus the real three-dimensional nature of special micro-particles or nano-particles (02) having highly specific micro-structure patterns on the surfaces thereof, which cannot be imitated, are used and provided as a public security feature due to the microlens magnification. |
