| 摘要 |
<p>A security element including: a plurality of focusing elements,a plurality of image regions where each image region is associated with a focusing element,each image region is printed with at least two layers, the first layer is offset by a first predetermined amount from a reference axis in the image region,the second layer is offset by a second predetermined amount from a reference axis in the image region,each layer being in different colours, and each image region includes at least a first and second sub-region, wherein a first image is formed in a first range of viewing angles from the first sub-region and a second image is formed in a second range of viewing angles from the second sub-region.</p> |
