摘要:
A light-diffractive binary grating structure has a microscopic mesa structure (2) whose plateaux (5) are separated by valleys (4) of substantially rectangular cross-section, wherein the arrangement of the valleys (4) is periodically repeated. Within a period (T) of the mesa structure (2) at least N valleys (4) separate the plateaux (5), N being an integer and greater than 2. The mesa structure (2) is an additive superimposition of N phase-shifted rectangular structures which have the same period (T) of the mesa structure (2). Each of the rectangular structures has a phase shift such that the plateaux (5) of the one rectangular structure fall into the valleys (4) of the N−1 other rectangular structures. In addition the resulting mesa structure (2) has only a single valley between two plateaux (5), which is of a width greater than a seventh of the period (T). The binary grating structures are suitable for use in optically diffractive security elements as the binary grating structures cannot be copied with holographic means.
摘要:
Described is a process for the production of a multi-layer body comprising a first layer which is formed from micro-optical structures and which at least partially covers over one or more further layers having image regions and/or effect regions which produce an optical effect, wherein the micro-optical structures are arranged in register relationship with the image regions and/or effect regions. The micro-optical structures (6a, 6b) as well as the image regions and/or effect regions are applied by means of intaglio printing. There are also described a multi-layer body produced with that process and a security document having that multi-layer body.
摘要:
A security element (1), in particular value document, and a process for producing same are described. The security element has a pattern area (21), consisting of one or more design elements (22), the shape of which provides a first optically perceptible item of information. It furthermore has a background area (20) surrounding the one or more design elements of the pattern area at least in areas. The security element (1) has an opaque reflective layer which is not provided in the background area (20), and in the pattern area (21) is provided in first zones (31), but not in second zones. The first zones (31) are spaced apart from each other by less than 300 μm and have a minimum dimension of less than 300 μm.
摘要:
Described are processes for enlarging the surface area of a polymer-based solar cell relative to a flat surface and/or for enlarging the active surface area of the organic semiconductor layer of the solar cell in relation to a flat surface. There is further described a polymer-based solar cell (1) in which the active surface of the organic semiconductor layer (13) has a surface profile which enlarges the surface area in relation to a flat surface profile. The surface has raised portions and/or depressions.
摘要:
A method for visually displaying and/or evaluating measurement data from imaging methods involve the following acts: a) calculating a parameterized statistical model from example voxel data sets that map different objects of an identical object class; b) carrying out at least one imaging method on an object to be examined of the object class in order to extract real measurement data; c) setting a set of model parameters of the parameterized statistical model; d) determining a difference between the real measurement data and the parameterized statistical model; e) repeating steps c) and d) while changing the model parameters until the difference between the real measurement data and the parameterized statistical model is minimal; and f) visually displaying and/or evaluating the statistical model parameterized in aforementioned manner.
摘要:
The invention concerns multi-layer films for back-molding with a liquid plastic material in an inmold process for the production of a decorated injection molded article of high optical quality and utilitarian suitability, in particular having curved surfaces, wherein the multi-layer film has at least one replication lacquer layer which at least on one of its surfaces has a spatial structure producing a visually perceptible and/or technical effect, wherein a contrast layer which is preferably in the form of a reflection layer is arranged in adjoining relationship with at least one surface with a spatial structure at least in region-wise manner. The invention further concerns an injection molded article which is decorated with a multi-layer film and a process for the production of the article.
摘要:
Described is a body, comprising an elastomeric material or having an outer elastomeric layer, wherein a surface structure which enhances the friction behavior is formed into the surface of the elastomeric body or into the outer elastomeric layer of the body. The surface structure (1) has a pattern made up of protuberances (11) which are prismatically, frusto-pyramidally, cylindrically, frusto-conically or mushroom-shaped, are spaced apart by passages (12) and the surfaces of which define a common plane, the maximum surface area of the protuberance (11) being in the range of from 100 nm to 5 mm.
摘要:
The invention concerns a security document comprising a flexible carrier and a multi-layer flexible film body which is applied to the flexible carrier and which provides one or more optical security features. The flexible multi-layer film body has an electrically controller display element for generating an optical security feature with associated electrical current source for operation of the display element in combination with an optically active diffractive structure.
摘要:
Light-diffracting microstructures are produced by the superimposition of at least two relief structures, wherein the first relief structure is produced mechanically while at least one second relief structure is a photomechanically generated diffraction structure. A process for the production of light-diffracting microstructures which are additive superimpositions comprising a relief structure and at least one diffraction structure, is distinguished by the following steps: a) producing a layer of photoresist on a substrate whose free surface has the relief structure, b) producing an interference pattern with coherent light over the relief structure, c) orienting the relief structure in relation to the interference pattern, d) exposing the relief structure by means of the interference pattern, e) developing the photoresist, wherein material of the photoresist which is changed by the exposure operation is removed and recesses, for example grooves, of the diffraction structure are produced on the relief structure, and f) drying the photoresist.
摘要:
The invention relates to an apparatus for imbricating sheets and depositing them on a stack (23), having a braking device, which is arranged upstream of the stacking region and acts in each case on the trailing edge of a supplied sheet (5) and having at least one transporting-air bar (19), which extends into the stacking region above the supply plane and has nozzles which expel compressed air.