VISUALLY VARIABLE SECURITY ELEMENT
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Accused Products
Abstract
An optically variable security element having an areal motif region provided in a depiction region with a plurality of reflective, planar facets. Each planar facet is characterized by an inclination angle against the plane of the areal motif region, which inclination angle has, as inclination components, a parallel component parallel to a target curve in a center position, and a normal component perpendicular to the target curve in the center position. For the planar facets in the depiction region, a first of the two inclination components are chosen dependent on the distance of the respective facet from the target curve, and a second of the two inclination components being chosen in a predetermined spreading range independently of the distance of the respective facet from the target curve.
18 Citations
34 Claims
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1-17. -17. (canceled)
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18. An optically variable security element for securing valuable articles that viewing-angle-dependently displays a motif having at least one curve depiction that, from a first viewing direction, is visible as a target curve in a center position within a depiction region and that, when the security element is tilted about two different predetermined axes, moves within the depiction region in different directions away from the center position, having
an areal motif region that is provided in the depiction region with a plurality of reflective, planar facets, each planar facet being characterized by an inclination angle against the plane of the areal motif region, which inclination angle has, as inclination components, a parallel component parallel to the target curve in the center position, and a normal component perpendicular to the target curve in the center position, and for the planar facets in the depiction region, a first of the two inclination components being chosen dependent on the distance of the respective facet from the target curve, and a second of the two inclination components being chosen in a predetermined spreading range independently of the distance of the respective facet from the target curve.
Specification