Ovd Kinegram Ag

Leonhard Kurz Stiftung & Co Kg

Max-planck-gesellschaft Zur F&#xf6;rderung Der Wissenschaften E. V.

Leica Geosystems Ag

Polyic Gmbh & Co Kg

Leonard Kurz Gmbh & Co. Kg

Adorsys Gmbh & Co. Kg

Kba-notasys Sa

Leonhard Kurz Gmbh & Co., Kg

Andreas Schilling

Wayne Robert Tompkin

René Staub

Achim Hansen

Rene Staub

John Anthony Peters

Sebastian Mader

Ludwig Brehm

Harald Walter

Olaf Krolzig

Reto Karrer Walker

Jurgen Metzger

Walter Fix

Norbert Lutz

Haymo Katschorek

Urs Vokinger

Manfred Walter

Bernhard F Gaechter

Michael Scharfenberg

Mathias Seitz

Christina Streb

Harald Burger

Andreas Hirschfelder

Philipp Schuler

Laurent Stauffer

Uwe Frieser

Bernhard Gächter

Matthias Heinrich

Vincent Moreau

Benno Schmitzer

Stéphane Bolognini

Daniel Holliger

Volker Dinkelmeyer

Stanislav N Horb

Peter Gehr

Ralf Wondratschek

Alexander Gugel

Christian Saxer

Klaus Schmidt

Rene Schaedler

Stephane Bolognini

Wayne Tompkin

Ralf Wrondratschek

Jürgen Metzger

René Schaedler

A method for producing security elements, security elements, a security document with at least one security element as well as a transfer film with at least one security element, wherein a three-dimensional object is recorded and a surface profile of the three-dimensional object, described by a function F(x,y), is determined, wherein the function F(x,y) describes the distance between the surface profile and a two-dimensional reference surface spanned by co-ordinate axes x and y at the co-ordinate points x and y. A first microstructure is determined in such a way that the structure height of the first microstructure is limited to a predetermined value smaller than the maximum distance between the surface profile and the two-dimensional reference surface, and the first microstructure provides an observer with a first optical perception which corresponds to the surface profile of the three-dimensional object described by the function F(x,y).

Method for producing security elements, and security elements

A multilayer body includes a transparent first layer. In the transparent first layer, a multiplicity of microlenses arranged in accordance with a microlens grid are impressed in a first region. Furthermore, the multilayer body includes a second layer, which is arranged below the first layer and in a fixed position with respect to the first layer and has a multiplicity of microimages arranged in accordance with a microimage grid and in each case in an at least regional overlap with one of the microlenses of the microlens grid for the purpose of generating a first optically variable information item. The grid pitches of the microimage grid and of the microlens grid in each case in at least one spatial direction are less than 300 &#x3bc;m.

Multilayer body

A method for producing a security element formed as a lenticular flip, including a micro-optical layer, a carrier substrate and an image layer, wherein the image layer includes n images for n=1 to i which are visible from an n-th observation angle allocated to the n-th image, and wherein n is at least 1. The images are imaged on a photoresist with parallel light in contact print or by means of projection. After the photoresist is developed, an image layer which includes the i images is present.

Method for producing security elements having a lenticular flip

The invention relates to a multilayer body with The invention furthermore relates to a method for producing such a multilayer body, a security element with such a multilayer body and a security document with such a security element.

Multi-layer body and method for producing same

A method for producing a volume hologram with at least one first area in a first color and at least one second area in a second color includes,

Method and master for producing a volume hologram

A method for producing security elements, security elements, a security document with at least one security element as well as a transfer film with at least one security element wherein a three-dimensional object is recorded and a surface profile of the three-dimensional object, described by a function F(x,y), is determined, wherein the function F(x,y) describes the distance between the surface profile and a two-dimensional reference surface spanned by co-ordinate axes x and y at the co-ordinate points x and y. A first microstructure is determined in such a way that the structure height of the first microstructure is limited to a predetermined value smaller than the maximum distance between the surface profile and the two-dimensional reference surface, and the first microstructure provides an observer with a first optical perception which corresponds to the surface profile of the three-dimensional object described by the function F(x,y).

Method for producing a plastic molded part (), wherein, in the method, a mold insert () with a diffractive surface relief () is provided, the mold insert () is inserted into one mold half of an injection mold () which, together with at least one further mold half, forms a cavity for producing the plastic molded part (), wherein the mold insert () is inserted into the injection mold () such that the diffractive surface relief () forms a partial area of the surface of the cavity formed by the mold half (), and the plastic molded part () is molded by injection molding by means of the injection mold (). The invention furthermore relates to a mold insert as well as an injection mold for such a method, as well as a plastic molded part produced in this way.

Method, mold insert and injection mold for producing a plastics molding

An optically variable element has first and second diffraction gratings which are high-frequency and therefore act reflectively into the zero diffraction order. Either a first color is generated by the first diffraction grating at a particular angle of rotation and a particular angle of illumination and simultaneously a second color, different from the first color, is generated by the second diffraction grating or a visible color is generated essentially only by the first diffraction grating at a first angle of rotation and a visible color is generated essentially only by the second diffraction grating at a second angle of rotation.

Optically variable element

The invention relates to a method for inspecting a security document (), the use of an augmented reality system () for inspecting a security document () as well as an augmented reality system (). One or more first items of information of the security document () are captured by means of an augmented reality system (), in particular a pair of smartglasses. The one or more first items of information are then checked by comparison with a database (). Furthermore, one or more of the results of the check of the one or more first items of information are stored and/or one or more of the results of the check of the one or more first items of information are output by means of the augmented reality system ().

Method for inspecting a security document

The invention relates to a method for authenticating an optically variable security element (), in particular a diffractive security element, with the steps:

Method for authenticating a security element, and optically variable security element

A decorative element (), in particular in the form of a transfer film, a laminating film or a security thread, as well as a security document with a decorative element and a method for producing same is described. The decorative element () has a microstructure () which generates an optical effect in incident light and/or with light passing through. In a first area (), the microstructure () has a base surface () and several base elements () which have in each case an element surface raised or lowered compared with the base surface () and a flank arranged between the element surface and the base surface (). The base surface () of the microstructure defines a base plane spanned by coordinate axes x and y. The element surfaces of the base elements () in each case run substantially parallel to the base plane. In at least one or more first zones of the first area (), the element surfaces of the base elements () and the base surface () are spaced apart in a direction running perpendicular to the base plane () in the direction of a coordinate axis z by a first distance which is chosen such that a color is generated in the one or more first zones in particular by interference of the light reflected at the base surface and the element surfaces in incident light and/or in particular by interference of the light transmitted through the element surfaces and the base surfaces with light passing through.

Decorative element and security document comprising a decorative element

A multilayer body includes a transparent first layer. In the transparent first layer, a multiplicity microlenses arranged in accordance with a microlens grid are impressed in a first region. Furthermore, the multilayer body includes a second layer, which is arranged below the first layer and in a fixed position with respect to the first layer and has a multiplicity of microimages arranged in accordance with a microimage grid and in each case in an at least regional overlap with one of the microlenses of the microlens grid for the purpose of generating a first optically variable information item. The grid pitches of the microimage grid and of the microlens grid in each case in at least one spatial direction are less than 300 &#x3bc;m.

The invention concerns a film element having a replication layer (), wherein an optically active surface structure () is shaped in a first surface of the replication layer. The surface structure is formed in at least a first region of the film element () by a first diffractive surface relief () comprising a plurality of successive elements following a first envelope curve (), wherein the elements respectively comprise an element surface () arranged substantially parallel to a base surface and at least one flank adjoining the adjacent element surface or surfaces, the element surfaces () of adjacent elements are spaced in a direction perpendicular to the base plane, with a first optical spacing or a plurality of the first optical spacing, wherein the first optical spacing is between 150 nm and 800 nm, preferably between 150 nm and 400 nm. The first envelope curve () has a spatial frequency of between 100 L/mm and 2000 L/mm and an optical depth of more than 450 nm and the relief shape and the spatial frequency of the envelope curve () are so selected that the incident light is diffracted into one or more first directions to represent a first item of information, the color value of which is further determined by the first optical spacing.

Film element

A method for the production of a multilayer body, in particular a security element, includes: a) producing a metal layer on a substrate; b) partial demetalization of the metal layer to form a first item of optical information in a first area of the multilayer body; c) applying a partial lacquer layer in a second area of the multilayer body to form a second item of optical information, wherein the partial lacquer layer extends at least partially beyond the metal layer; d) structuring the partial metal layer in the second area using the partial lacquer layer as mask.

Multi-layer body and method for the production thereof

A multilayer body with a carrier and a layer arranged thereon which comprises electrically conductive material in such an arrangement comprises an information area and a background area () which are galvanically separated from each other. In each information area a first zone () with electrically conductive material is provided, over the entirety of which electrically conductive material is conductively connected to it. In each background area a plurality of second zones with electrically conductive material is provided, which are galvanically separated from each other. Each first zone () preferably occupies a surface area that is at least five times larger than each of the second zones. The electrically conductive material is preferably provided with an average surface coverage which varies over all information areas and background areas () by less than 25%. A homogeneous appearance of the multilayer body is thereby ensured, and an item of information provided in the information area, provided by the shape, size and/or alignment of the first zone, is not visible without aids, and therefore cannot be copied.

Capacitively readable encoded multilayer body

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Hagendorn, Switzerland

Andreas Schilling