摘要:
According to one aspect, the invention relates to an optical safety component having a plasmonic effect intended to be observed by transmission, including two layers (101, 103) made of a transparent dielectric material, a metal layer (102) that is arranged between said layers made of dielectric material to form two dielectric-metal interfaces (105, 106), and is structured to form on at least a portion thereof corrugations (104) that are capable of coupling surface plasmon modes supported by said dielectric-metal interfaces with an incident light wave. The corrugations are arranged in a first coupling area in a first main direction and in at least one second coupling area separate from said first coupling area, in a second main direction that is substantially perpendicular to said first main direction, said metal layer being continuous on each one of said coupling areas.
摘要:
An optically variable security element, for security papers, value documents and other data carriers, includes a single or multilayer central body having opposing first and second main surfaces, an arrangement of microlenses on the first main surface of the central body, the microlenses having a refractive effect defining a focal plane, a laser-sensitive recording layer arranged on the second main surface of the central body, a mask layer arranged between the arrangement of microlenses and the laser-sensitive recording layer and outside of the focal plane of the microlenses, and a plurality of micromarks produced in the laser-sensitive recording layer by the action of laser radiation, each micromark being associated with a microlens and being visible when the security element is viewed through the associated microlens. The mask layer comprises a macroscopic gap region that is in register with the plurality of micromarks.
摘要:
Dynamically-variable graphic displays, including a panel comprised of a plurality of electrostatic particles and a plurality of electrodynamic contacts supported within a nonconductive substrate, wherein each electrostatic particle is situated within a channel in the nonconductive substrate such that the nonconductive substrate comprises a plurality of channels oriented in one direction. Also included within the invention are dynamically-variable graphic display panels comprising electrostatic particles that each comprise a plurality of sectors, each having a different color and a fixed magnetic polarity relative to said sectors, and a plurality of electrodynamic contacts, each contact located adjacent to an electrostatic particle and positioned for interaction with one of the electrostatic particles.
摘要:
A light control film is described that is formed with at least one security feature therein. The security feature is not visible when the film is viewed at an incorrect angle. The security feature only becomes visible when the film is viewed at the correct viewing angle or range of viewing angles. A plurality of security features can be formed in the film at substantially the same location(s), but at different angles, so that each security feature only becomes visible when the film is viewed at the correct respective viewing angle or range of viewing angles. The light control film can be integrated into any type of document where resistance to counterfeiting and fraudulent alteration are important, such as plastic identification or credit cards, or passports.
摘要:
A security device for verifying an authenticity of a security document comprises an at least partially transparent substrate with a first surface and a second surface. A first pattern is arranged on the first surface. A second pattern is arranged on said second surface. The first and the second pattern each comprise a plurality of pixels with at least three different gray levels visible from a macroscopic perspective. The first and second pattern cover only gray levels in a range between 20% black and 80% black, in particular between 35% black and 65% black. The first pattern is inverted with respect to the second pattern.
摘要:
The present invention concerns a data carrier having—a central portion covered by at least one translucent protective layer on at least one of its sides,—at least one see-through portion with an orifice filled with a translucent plug, going at least partially through of the central portion. The central portion has a colored core and at least one opaque layer colored in a color different from the colored core in order to show a layered structure of different colors on the edge of the data carrier. The invention also concerns the method of production of such a data carrier.
摘要:
A security feature is formed in a window region in which an ablatable foil element is disposed. The security feature can be a portrait image of the intended holder of the identification document or any other personal data of the intended holder. The security feature is added to the foil element at the time of personalization of the document using a laser to ablate (i.e. remove) metal from the foil. The resulting security feature can be transparent. In addition, a variable data security feature is provided that extends across the boundary between the window region and the remainder of the card body.
摘要:
A security element is provided for a document of value. The security element includes an array of apertures through at least a portion of the document of value, the arrangement of apertures relative to one another forming an observable data item. The array of apertures includes apertures of at least two different shapes or orientations, the occurrence of the different shapes or orientations within the array representing an encoded data item. Also provided is a method of manufacturing a security element on a document of value, including: obtaining a first data item and generating an aperture array template; obtaining a second data item and encoding the second data item within the aperture array template; and perforating at least a portion of the security document according to the encoded aperture array template.
摘要:
A method is for examining a sheet-shaped or card-shaped value document with a security feature having one or more cavities configured in the value document. The width of the cavity or cavities is in at least one respectively specified direction exceeding 10 μm. Transmission values are established in a locally resolved manner for the transmission of ultrasound in a specified frequency range. In employing the transmission values, it is checked whether a specified number of transmission values is greater than a specified transmission threshold value.
摘要:
Payment devices and methods for forming payment devices are provided. A payment device may include a front cover, a back cover, and at least one insert, and at least one payment mechanism. The at least one insert may be disposed or situated between the front cover and the back cover, and the front cover, back cover, and the at least one insert may be hinged together along a respective common edge. The at least one payment mechanism may be integrated into one or more of the front cover, the back cover, or the at least one insert.