| CPC B42D 25/29 (2014.10) [B42D 25/324 (2014.10); B42D 25/328 (2014.10); B42D 25/351 (2014.10); B42D 25/373 (2014.10); B42D 25/425 (2014.10); G02B 5/085 (2013.01); G02B 5/09 (2013.01); G02B 27/06 (2013.01)] | 16 Claims |
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1. An optically variable security element for protecting objects of value, the area extension of which defines a z-axis perpendicular thereto, with a reflective area region that shows at least two optically variable effects which can be recognized from different viewing directions, and which appear with different colors, wherein
the reflective area region includes two independent relief structures comprising micromirror arrangements with directionally reflective micromirrors, which are arranged at different height levels in the z-direction and form a lower-level and a higher-level relief structure,
the higher-level relief structure is supplied with a first reflection-enhancing coating following the relief profile, and the lower-level relief structure is supplied with a second reflection-enhancing coating following the relief profile;
the two relief structures overlap in a feature region, and
the first reflection-enhancing coating is formed in the visible spectral range with a wavelength-dependent reflection and transmission in the visible spectral range, so that
the higher-level relief structure provides a first optically variable effect visible for a viewer in a first color and in a first viewing angle range, and
the lower-level relief structure provides a second optically variable effect through the first reflection-enhancing coating, wherein the second optically variable effect is visible for the viewer in a second, different color and in a second viewing angle range different from the first viewing angle range,
wherein the first reflection-enhancing layer is present in the feature region in a non-gridded manner.
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