Multi-layered body, and security document
AssigneeOVD Kinegram AG
InventorsRene Staub, Sascha Mario Epp, Orvy Emanuel Toberer, John Anthony Peters
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Abstract
A multilayer body with a functional layer which includes an antenna element as well as with an optical security element which includes at least one electrically conductive partial region which is galvanically connected to the antenna element. A security document with such a multilayer body, as well as a method for the authentication thereof.
Claims32
A multilayer body with a functional layer which comprises an antenna element as well as with an optical security element which comprises at least one electrically conductive partial region which is galvanically connected to the antenna element, wherein the security element further comprises an optically variable structure, the optically variable structure comprising a surface relief producing an optical effect dependent on illumination or viewing angle, and
- wherein the antenna element comprises at least one winding, the at least one winding comprising an outermost winding enclosing an area, and
- wherein the electrically conductive partial region of the security element covers a maximum proportion of 20% of the area enclosed by the outermost winding of the antenna element, and
- wherein the surface relief is formed in the electrically conductive partial region or in a replication layer of the security element.
A multilayer body with a functional layer which comprises an antenna element as well as with an optical security element, the optical security element comprising:
- at least one electrically conductive partial region which is galvanically connected to the antenna element;
- and
- an optically variable structure, the optically variable structure comprising a surface relief producing an optical effect dependent on illumination or viewing angle,
- wherein the multilayer body comprises a covering layer which has at least one transparent partial region and at least one non-transparent partial region, and
- wherein the at least one non-transparent partial region at least partially overlaps the antenna structure viewed in the direction of the surface normals onto the plane spanned by the multilayer body, and
- wherein the antenna element comprises at least one winding, the at least one winding comprising an outermost winding enclosing an area, and
- wherein the electrically conductive partial region of the security element covers a maximum proportion of 20% of the area enclosed by the outermost winding of the antenna element, and
- wherein the surface relief is formed in the electrically conductive partial region or in a replication layer of the security element.
Dependencies are inferred from the claim text.