Security element, value document comprising such a security element, and method for producing such a security element
AssigneeGiesecke+Devrient Currency Technology GmbH
InventorsChristian FUHSE, Michael RAHM, Andreas RAUCH, Wittich KAULE
Life of this patent
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Abstract
A security element (1) for a security paper, value document or the like, having a carrier (8) which has an areal region (3) which is divided into a multiplicity of pixels (4) which respectively includes at least one optically active facet (5), whereby the majority of the pixels (4) respectively have several of the optically active facets (5) of identical orientation per pixel (4), and the facets (5) are so oriented that the areal region (3) is perceptible to a viewer as an area that protrudes and/or recedes relative to its actual spatial form.
Claims27
A security element for a security paper, comprising:
- a carrier having a first areal region which is divided into a multiplicity of pixels which respectively comprise at least one optically active facet,
- the majority of said pixels respectively having several optically active facets of identical orientation per pixel, wherein the dimensions of the optically active facets are between 3 μm and 300 μm, and
- said facets being so oriented that the areal region is perceptible to a viewer as an area that protrudes and/or recedes relative to its actual spatial form,
- wherein the security element presents a multi-channel image that results in different images being perceptible by the viewer by the carrier having, besides the first areal region, a second areal region interlaced with the first areal region,
- wherein the second areal region is configured as a further security feature.
A method for making a security element for security papers comprising the steps:
- forming a surface of a carrier to be height-modulated in first areal region such that the first areal region is divided into a multiplicity of pixels respectively having at least one optically active facet,
- wherein the majority of the pixels respectively are formed to have several optically active facets of identical orientation per pixel, wherein the dimensions of the optically active facets are between 3 μm and 300 μm, and
- said facets are formed to be so oriented that the first areal region is perceptible to a viewer of the security element as an area that protrudes and/or recedes relative to its actual spatial form,
- wherein the security element is formed to present a multi-channel image that results in different images being perceptible by the viewer by the carrier being formed to have, besides the first areal region, a second areal region interlaced with the first areal region, and
- wherein the second areal region is configured as a further security feature.
Dependencies are inferred from the claim text.