Ovd Kinegram Ag

Leonhard Kurz Stiftung & Co Kg

Bundesdruckerei Gmbh

Kurz Digital Solutions Gmbh & Co. Kg

Sebastian Mader

Wayne Robert Tompkin

Harald Walter

Andreas Schilling

Ludwig Brehm

Rene Staub

René Staub

Jörg Fischer

Olga Kulikovska

Andre Leopold

André Leopold

Harald Burger

Uwe Frieser

Corrado Fraschina

Benno Schmitzer

Eser Alper Unal

Volker Dinkelmeyer

Hendrik Von Prince

Gina Oberbossel

Eser Alper ÜNal

A method for producing a hologram (), () for security elements () and/or security documents (). One or more virtual hologram planes () are arranged in front of and/or behind one or more virtual models () and/or one or more virtual hologram planes () are arranged such that they intersect one or more virtual models (). One or more virtual light sources () are arranged on one or more partial regions of the surface () of one or more of the virtual models (). One or more virtual electromagnetic fields () are calculated starting from at least one of the virtual light sources () in one or more zones () of the one or more virtual hologram planes (). In the one or more zones (), in each case, a virtual total electromagnetic field () is calculated on the basis of the sum of two or more, of the virtual electromagnetic fields () in the respective zone (). One or more phase images () are calculated from the virtual total electromagnetic fields () in the one or more zones (). A height profile () of the hologram () is calculated from the one or more phase images () and the height profile () of the hologram () is incorporated into a substrate () to provide the hologram ().

Method for producing a hologram, and security element and a security document

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 security element with one or more first microstructures, wherein the first microstructures are provided in each case in one or more tracks which are curved at least in sections or in one or more sections of a track which are curved at least in sections, and/or in each case run along one or more tracks which are curved at least in sections or along one or more sections of a track which are curved at least in sections, and a method, wherein at least one file containing image points of one or more image elements is provided, which includes the locational arrangement of the image points, and one or more tracks which are curved at least in sections or one or more sections of one or more tracks which are curved at least in sections are determined from the locational arrangement of the image points, and in the one or more tracks or sections of tracks in each case one or more first microstructures are provided which, when illuminated, provide a first item of optically variable information.

Security element, and method for producing a security element

A method for producing a multilayer body, with the steps of:

Multilayer body and method for producing same

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 security element () with a first area () that is transparent in transmitted light. The security element () has a substrate () which has, in the first area (), one or more transmissive diffraction structures which display one or more optical security features when observed in transmitted light.

Security element and security document

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

The invention relates to an optically variable element as well as a method for the production thereof. In a first area the optically variable element has at least one first color region which in the event of illumination generates a color dependent on the angle of observation and/or angle of illumination. The first color region has two or more zones (to) arranged next to each other. The two or more zones arranged next to each other have in each case a width and/or length dimension of less than 300 &#x3bc;m. In at least one first zone () of the zones (to) of the first color region a thin-film interference filter () is provided with at least one interference layer (). The interference layer () of the thin-film interference filter () has a first average thickness (d) in the first zone (). The first average thickness is chosen such that the thin-film interference filter () in the event of illumination at least one particular angle of observation and/or angle of illumination generates, by means of interference, a color which differs from at least one color which is generated in the event of illumination at this angle of observation and/or angle of illumination in at least one of the other zones (to) of the first color region.

The invention relates to a security element (), in particular in the form of a multi-layer flexible film body, with a top side facing an observer and a back side facing away from the observer, as well as a method for the production thereof. The security element () has one or more light-emitting elements arranged in a first area () of the security element which radiate light when activated and in particular are formed in each case of a self-luminous, electrically operated, display element. The security element () has, in the first area (), one or more transmissive diffraction structures. The one or more transmissive diffraction structures are arranged such that at least a part of the light radiated by the activated one or more light-emitting elements transmits through at least one partial area of the transmissive diffraction structures.

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Baar, Switzerland

Sebastian Mader