| 摘要 |
According to one aspect, the invention relates to an optical safety component (60) that is to be controlled during reflection in a controlling spectral band. The optical safety component includes a reflective layer (602) in said controlling spectral band. Said reflective layer has a structured area. The structured area includes microstructures spatially distributed in a uniform manner over the entire area so as to form an optical structure at least partially diffusing in said controlling spectral band. The heights of said microstructures are distributed, according to a modulated random structure, on said area by means of a modulation function so as to form, after lighting the component at a given angle, an image that is identifiable by observing the reflection thereof. |
