SECURITY DOCUMENT WITH SECURITY FEATURE

摘要

A security element for a security document comprises a first, second, third and fourth line grid which contrasts with the substrate surface, each of said grid being associated with a pattern comprising an embossed structure of the substrate. A first, second, third and fourth pattern angle differ from one another. A first security information item is coded as a first localized distribution of the first and second pattern, a second security information item is coded as a localized distribution of the third and the fourth pattern. The first and the second security information items overlap one another in the process. By disposing the first and second pattern in first grid cells and by disposing the third and fourth pattern in second grid cells and by arranging the first and second grid cells in alternating fashion, specific intensity distributions occur in different viewing directions of the security document, the intensity distributions being useful for examining the authenticity of the document.

主权项

1. A security element for a security document, the security element comprising
a substrate with a surface, at least a first, a second, a third and a fourth pattern with a first, a second, a third and a fourth pattern angle, each pattern comprising an embossed structure on the substrate, wherein the embossed structures are designed such that when the substrate surface is viewed straight on, the patterns are visible and when the substrate surface is viewed at an oblique angle from at least one predetermined viewing direction, at least a part of at least one of the patterns is occluded by at least a part of at least one of the embossed structures such that a visual latent image effect occurs when the viewing of the substrate surface is changed between straight on and oblique, a first security information item configured as a first localized distribution of the first and second patterns, the first distribution comprising a first area and a second area of the substrate, wherein the first pattern is disposed in at least part of the first area and wherein the second pattern is disposed in at least part of the second area, a second security information item configured as a second localized distribution of the third and fourth patterns, the second distribution comprising a third area and a fourth area of the substrate, wherein the third pattern is disposed in at least part of the third area and wherein the fourth pattern is disposed in at least part of the fourth area, wherein the first security information item and the second security information item are arranged at least partially overlapping, wherein the security element further comprises: first grid cells, wherein the first pattern and the second pattern are exclusively arranged in the first grid cells, second grid cells, wherein the third pattern and the fourth pattern pattern are exclusively arranged in the second grid cells, wherein the first grid cells and the second grid cells are arranged next to one other in a non-overlapping fashion on the substrate, wherein the first grid cells and the second grid cells are arranged in a first and in a second direction parallel to the substrate on at least a part of the substrate in a mutually alternating fashion, wherein the first grid cells and the second grid cells each comprise first grid cell types and second grid cell types, and wherein the first grid cell types are designed such that they surround the second grid cell types.