| 摘要 |
The invention relates to a security structure (3), for at least partial incorporation, or fixing in or on an article, for example, a security and/or value document, said structure comprising: at least one first fluorescent zone, which may emit a visible light of a first colour by fluorescence under given illumination conditions, at least one second fluorescent zone, which may emit a visible light of a second colour by fluorescence under given illumination conditions, different from the first, the first and second fluorescent zones being observable from opposing faces (19) of the structure. |
