| 摘要 |
The invention relates to a security element for security papers, valuable documents, identity cards or similar, which consist of a grid-like arrangement of focusing optical elements. Each of the focusing optical elements has a focal point or a focal line, so that the grid-like arrangement of focusing optical elements produces recognizable images of imaging elements located at the focal point or on the focal line of the focusing optical elements. According to the invention, the position of the focal points or focal lines of at least some of the focusing optical elements in relation to the imaging elements can be influenced by outside influences. The outside influences are for example mechanical pressure and/or changes in the temperature and/or and electric current and/or and electromagnetic field Said influence is such that the imaging elements which are located initially outside of the focal points or the focal lines of the focusing optical elements, are arranged in the focal point or the focal line of at least one focusing optical element after the effect of the outside influences. Alternatively or additionally, the influence is such that the imaging elements which are located initially in the focal point or in the focal line of at least one focusing optical element, are arranged outside the focal point or the focal line of the focusing optical element after the effect of the outside influences. The moire magnifier security element can also comprise a transparent, electrically conductive coating (2), a transparent, mechanically compressible intermediate layer (8) or a displaceable viscose intermediate layer (10). |
