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US20100321784 Optical Elements with Gradient Structure  
The invention relates to optical elements with gradient structure, in particular for holographic applications, wherein the gradient structure is formed by a refractive index gradient and a method...
US20110236804 Composition for Producing Optical Elements Having Gradient Structure  
A composition for producing optical elements has a gradient structure, particularly for holographic applications, wherein the gradient structure is formed by a refractivity gradient. The...
US20120052415 STAMPS WITH MICROMETER-AND NANOMETER-SCALE FEATURES AND METHODS OF FABRICATION THEREOF  
Stamps and methods of making stamps for applications in anti-counterfeiting and authentication. The stamps are relatively small in size and feature nanoscale and microscale identification regions...
US20120237856 SELECTION METHOD FOR ADDITIVES IN PHOTOPOLYMERS  
The invention relates to a method for selecting compounds which can be used as additives in photopolymer formulations for producing light holographic media, and to photopolymer formulations which...
US20150125784 PHOTOPOLYMER FORMULATIONS HAVING THE ADJUSTABLE MECHANICAL MODULUS GUV  
The subject matter of the invention is a method for producing illuminated, holographic media comprising a photopolymer formulation having the adjustable mechanical modulus GUV. A further subject...
US20120219884 PHOTOPOLYMER FORMULATIONS HAVING THE ADJUSTABLE MECHANICAL MODULUS GUV  
The subject matter of the invention is a method for producing illuminated, holographic media comprising a photopolymer formulation having the adjustable mechanical modulus GUV. A further subject...
US20120044549 Hybrid Reflection Hologram  
Hybrid white-light viewable holograms and methods for making them. The holograms are hybrid reflection holograms made using the diffractive structures or gratings of a holographic object such as a...
US20150056538 Device for protecting crops using hologram of natural enemy eyes and method for fabricating the same  
Disclosed are a device for protecting crops from wildlife, comprising an optical base film on both sides of which fluorescent holograms of natural enemies with both eyes and optionally claws or...
US20130148181 PHOTOREFRACTIVE COMPOSITE, SPATIAL LIGHT MODULATOR, AND HOLOGRAM DISPLAY DEVICE USING THE SAME  
A photorefractive composite, a spatial light modulator and a hologram display device using the same include at least one carborane compound expressed as the following Chemical Formulae 1A through...
US20130148180 PHOTOREFRACTIVE COMPOSITE, SPATIAL LIGHT MODULATOR, AND HOLOGRAM DISPLAY DEVICE USING THE SAME  
A photorefractive composite, a spatial light modulator and a hologram display device using the same include at least one carborane compound expressed as the following Chemical Formulae 1A through...
US20110236803 PHOTOPOLYMER FORMULATION FOR PRODUCING VISIBLE HOLOGRAMS  
The present invention relates to a photopolymer formulation containing chemically crosslinked matrix polymers, writing monomers and a photoinitiator system, wherein the photoinitiator system...
US20120231377 PHOTOPOLYMER FORMULATION HAVING DIFFERENT WRITING COMONOMERS  
The invention relates to a photopolymer formulation comprising matrix polymers, writing monomers, and photo initiators, comprising a combination of at least two different writing monomers. The...
US20100086860 PHOTOPOLYMER COMPOSITIONS FOR OPTICAL ELEMENTS AND VISUAL DISPLAYS  
The invention relates to novel photopolymers based on specific urethane acrylates as writing monomers, which are suitable for producing holographic media, in particular for visual display of images.
US20080145765 Metal Identification Platelet and Method of Producing Thereof  
A metal identification platelet equipped with an identification code, while the identification code comprises a hologram. A method of producing the identification platelet with the identification...
US20090123852 Hard-material object comprising visional color-varying surface  
A hard-material object comprising a visional color-varying surface comprises a hard-material carrier and a pattern disposed on the surface of the hard-material carrier. The pattern comprises a...
US20120231376 FLUOROURETHANE AS AN ADDITIVE IN A PHOTOPOLYMER FORMULATION  
The invention relates to a photopolymer formulation comprising matrix polymers, writing monomers, and photoinitiators, to the use of the photopolymer formulation for producing optical elements, in...
US20090103150 Object Having a Holographic Security Feature and Method for Manufacturing Such a Feature  
An optical security feature, e.g. for a banknote or other security documents, comprises a first and a second holographic layer arranged on top of each other. Each layer comprises a comparatively...
US20120321997 URETHANES USED AS ADDITIVES IN A PHOTOPOLYMER FORMULATION  
The invention relates to a photopolymer formulation comprising matrix polymers, writing monomers and photo initiators, to a method for producing said photopolymer formulation, a photopolymer...
US20120321998 PHOTOPOLYMER FORMULATION HAVING TRIAZINE-BASED WRITING MONOMERS  
The invention relates to a photopolymer formulation comprising polyurethane matrix polymers, writing monomers, and photoinitiators, wherein the writing monomers comprise compounds of formula (I),...
US20100086861 SPECIAL POLYETHER-BASED POLYURETHANE FORMULATIONS FOR THE PRODUCTION OF HOLOGRAPHIC MEDIA  
The present invention relates to novel polyurethane compositions which are advantageous for the production of holographic media, inter alia for data storage, but also for optical applications of...
US20100020373 HOLOGRAPHIC STORAGE MEDIUM AND METHOD FOR GATED DIFFUSION OF PHOTOACTIVE MONOMER  
An optical medium is provided. The optical medium comprises: a diffusion-controlling matrix framework; at least one photoactive monomer attached to the diffusion-controlling matrix framework in a...
US20110249307 HOLOGRAM AND ASSOCIATED METHODS OF FABRICATION THEREOF AND USE IN SECURITY/AUTHENTICATION APPLICATIONS  
A hologram (and related hologram element) contains and exhibits a holographic image when illuminated and viewed on angle and with the holographic image gradually fading when viewed increasingly...
US20050244720 Recto/verso copy-protected security document  
The invention concerns a security document comprising, as security element against recto/verso copying, indicia present on both sides and capable of being viewed under reflected lighting and...
US20080130074 Anti-Counterfeit Security and Methods for Its Production and Verification  
The security object comprises a substrate, a surface structure and a hologram layer. A volume hologram is arranged in the hologram layer. The hologram layer is deformed in homogeneously by the...
US20060019172 Volume hologram resin composition, surface relief hologram resin composition, and hologram layer, hologram transfer foil and brittle hologram label using the same  
The major object of the invention is to provide a volume-type hologram resin composition and a surface relief-type hologram resin composition having a high effect of preventing forgery and...
US20080316556 VOLUME HOLOGRAM TRANSFER FOIL, VOLUME HOLOGRAM LAMINATE, AND PRODUCTION METHOD THEREOF  
A major object of the present invention is to provide a volume hologram transfer foil that gives a volume hologram laminate higher in antiforgery function, The present invention achieves the...
US20050219669 Method of forming a rainbow security hologram  
The present invention relates to a method of forming and validating a color-assigned rainbow security hologram of an object, where different parts of the recreated image of the object is presented...
US20090286165 HOLOGRAM LAMINATE, HOLOGRAM COPY METHOD, AND HOLOGRAM PRODUCING METHOD  
A hologram laminate is provided. The hologram laminate includes a hologram record layer, and a surface protection layer. The hologram record layer is made of a photosensitive material. The surface...
US20070092804 Photopolymerizable medium comprising siloxane compounds that support cationic polymerization for holographic storage  
Compound represented by structural formulas (XII) and (XV): and polymerizable and holographic recording media comprising same. Variables for structural formulas (XII), (XIIA), and (XV) are defined...
US20080299464 LENGTHY VOLUME HOLOGRAM LAYER TRANSFER FOIL, METHOD OF PRODUCING VOLUME HOLOGRAM LAMINATE USING THE SAME AND VOLUME HOLOGRAM LAMINATE  
The present invention provides a lengthy volume hologram layer transfer foil capable of transferring a volume hologram layer continuously to a specified position of a transfer-receiving member....
US20140133000 PHOTOREFRACTIVE POLYMER COMPOSITE, AND PHOTOREFRACTIVE DEVICE AND HOLOGRAM DISPLAY DEVICE INCLUDING THE SAME  
Provided are a photorefractive polymer composite, and a photorefractive devices and hologram display device including the same. The photorefractive polymer composite includes a photoconductive...
US20100291474 COMPOSITIONS AND COATINGS CONTAINING FLUORESCENT, INORGANIC NANOPARTICLES  
Compositions and coatings are described that contain fluorescent, inorganic nanoparticles that can fluoresce when excited with actinic radiation. The compositions and coatings can be used for...
US20120219885 NOVEL NON-CRYSTALLIZING METHACRYLATES, PRODUCTION AND USE THEREOF  
The invention relates to a novel non-crystallizing methacrylate and a method for the production thereof. The invention further relates to a photopolymer formulation comprising the methacrylate of...
US20130059233 PHOTOPOLYMER MEDIA WITH ENHANCED DYNAMIC RANGE  
Dynamic range enhancing dopants for photopolymeric media are described. Also described are optical articles using these dopants and methods for making such optical articles.
US20150220056 POLYCARBONATE-BASED SECURITY DOCUMENTS AND/OR DOCUMENTS OF VALUE WITH A HOLOGRAM IN THE CARD BODY  
The invention relates to polycarbonate-based or copolycarbonate-based security documents and/or documents of value which contain at least one hologram integrated in the card body, and to a method...
US20140002873 Security Element and Method for Producing a Security Element  
A method for producing a security element (55) and a security element (55) in the form of a multilayered film body having a top side facing the observer. The security element (55) has a volume...
US20070009807 Volume hologram photosensitive composition  
This invention provides a volume hologram photosensitive composition, which can realize a hologram having an excellent brightness and, at the same time, having excellent heat resistance and...
US20110134496 Security Element and Method for Producing a Security Element  
The invention relates to a method for producing a security element (55) and to a security element (55) in the form of a multilayered film body having a top side facing the observer. The security...
US20090274961 Photosensitive composition for volume type hologram memory  
To provide photosensitive composition for volume type hologram memory with superior photosensitivity and large differences in reflective index before and after photo-curing and with controllable...
US20090246643 PHOTOSENSITIVE COMPOSITION CONTAINING ORGANIC-ZIRCONIA COMPOSITE FINE PARTICLES  
[Problems] The present invention provides a photosensitive composition capable of permanently forming a hologram having a low light scattering loss and high diffraction efficiency, and a forming...
US20140255824 SULPHUR-CONTAINING CHAIN TRANSFER REAGENTS IN POLYURETHANE-BASED PHOTOPOLYMER FORMULATIONS  
The present invention relates to photopolymer formulations comprising: matrix polymers (A), obtainable by reacting at least one polyisocyanate component (a) and one isocyanate-reactive component...
US20140295328 CHAIN TRANSFER REAGENTS IN POLYURETHANE-BASED PHOTOPOLYMER FORMULATIONS  
The present invention relates to photopolymer formulations comprising: matrix polymers (A), obtainable by reacting at least one polyisocyanate component (a) and one isocyanate-reactive component...
US20150241845 SECURITY ELEMENTS AND METHOD FOR THEIR MANUFACTURE  
The present invention relates to complex security elements based on recording materials for optical elements with refractive index modulation, in particular, holograms, which are subsequently...
US20100248088 PHOTOPOLYMERISABLE SYSTEM FOR HOLOGRAM FORMATION  
A photopolymerisable system comprises an organic-inorganic compound with a metal and an organic unit having a organic photopolymerisable subunit capable of undergoing a polymerisation, a support...
US20140038084 PHOTOPOLYMER FORMULATION FOR PRODUCING HOLOGRAPHIC MEDIA  
The invention relates to a photopolymer formulation, comprising at least one polyol component, a polyisocyanate component, a write monomer, a photoinitiator, and a catalyst, wherein the...
US20060121357 Large pattern printing  
A method for printing a large pattern onto a substrate which includes decomposing the large pattern into a plurality of pattern segments; providing a mask in which is arranged one of each...
US20100037954 FLAT LIGHT CONCENTRATION DEVICE WITH REDUCED THICKNESS  
A light concentration device includes: a plate including two principal faces and an edge between the two principal faces, a refractive index gradient existing between the two principal faces, and...
US20070284768 Manufacturing Method Of Lens With Built-In Hologram Element  
A method for manufacturing a hologram optical substrate having a hologram element includes: a cutting process that employs a laminate sheet having a pair of protective sheets with a hologram...
US20090162756 Multi-Layer Body With Volume Hologram  
Described is a process for the production of a multi-layer body having a volume hologram with at least two different items of image information, wherein a photosensitive layer (46) of the...
US20080309997 Hologram Screen  
The present invention provides a holographic screen having high durability and high diffraction efficiency due to a modulated refractive index structure having a large refractive index change Δn....

Matches 1 - 50 out of 287 1 2 3 4 5 6 >