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Composition or product or process of making the same

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430 - Radiation imagery chemistry: process, composition, or product thereof

430001000 - HOLOGRAPHIC PROCESS, COMPOSITION, OR PRODUCT

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DocumentTitleDate
20080261118OPTICAL RECORDING COMPOSITION AND HOLOGRAPHIC RECORDING MEDIUM - The present invention provides an optical recording composition and a holographic recording medium comprising a recording layer formed with the optical recording composition. The optical recording composition comprises a bicyclic cyclopropane derivative denoted by General Formula (1).10-23-2008
20120183888PHOTOPOLYMER FOR VOLUME HOLOGRAPHIC RECORDING AND ITS PRODUCTION PROCESS - The present invention refers to the manufacturing method of a holographic film and its development; the compositions of the films used in this invention are substantially solid and applied on a substrate in film or glass form; the photopolymerizable layer consists of a thickness of about 10 to 100 μm (microns), consisting of: a) 70% to 90% over the total weight of a thermoplastic “polymer”, b) 10% to 30% over the total weight of a preferably mono-functional photopolymerizable monomer reactive to light and, c) 1% to 10% per weight of an expansion agent that when heated at a minimum of 75° C. produces a gas in the unhardened or monomer polymerized areas of the hologram; furthermore, the composition contains a photoinitiator system sensitive to visible light, surfactants, plasticizers, etc.; photopolymerizable monomers used in this invention contains at least one part unsaturated ethylene with a boiling temperature equal or higher than 100° C.07-19-2012
20100119957VOLUME HOLOGRAPHIC DATA RECORDING MEDIA - There is provided volume holographic data recording media having a recording layer which is capable of recording interference fringes generated by interference of light having excellent coherence as fringes having different refractive indexes and undergoes holographic data recording by an amount of spatial shift distance of not more than 3 μm which is smaller than that of conventional media.05-13-2010
20100112458Photopolymerisable composition - There is described a photopolymerisable composition comprising (a) 75 to 99% by weight of an ethylenically unsaturated monomer or a monomer mixture of different ethylenically unsaturated monomers, (b) 0.5 to 25% by weight of a triglyceride or a mixture of different triglycerides and (c) 0.1 to 10% by weight of a photoinitiator system which activates the polymerisation of the ethylenically unsaturated monomer(s) upon exposure to actinic radiation, wherein the composition is a homogeneous, clear and, at 20° C., liquid mixture. Furthermore, there are described elements manufactured from such photopolymerisable compositions and methods for the formation of light-resistant holograms therefrom. The photopolymerisable compositions are useful, in particular, as recording material for optical elements having refractive index modulation, in particular, holograms.05-06-2010
20100112459POLYETHER-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 different types.05-06-2010
20130034805HOLOGRAM RECORDING MATERIAL AND HOLOGRAM RECORDING MEDIUM - A hologram recording material includes a polymerizable monomer (A) that is active in radical polymerization but is substantially inactive in cationic polymerization, a polymerizable monomer (B) that is active in cationic polymerization but is substantially inactive in radical polymerization, and an initiator system (C) that polymerizes at least one of the polymerizable monomer (A) and the polymerizable monomer (B) through irradiation with light. The polymerizable monomer (A) and the polymerizable monomer (B) each have, in its structure, a moiety selected from the group consisting of aromatic rings, halogen atoms other than a fluorine atom, and sulfur atoms not derived from a cyclic sulfide or a mercapto group. A hologram recording medium includes a recording layer composed of the hologram recording material.02-07-2013
20080311483Radiation-Crosslinking And Thermally Crosslinking PU Systems-Based On Poly(epsilon-Caprolactone) Polyester Polyols - The present invention provides polyurethane systems which cure by radiation and thermal action with crosslinking, and use thereof for the production of holographic media. The polyurethane compositions of the invention comprise A) polyisocyanates, B) polyols, comprising at least one poly(ε-caprolactone)polyester polyol, C) compounds having groups which react on exposure to actinic radiation with ethylenically unsaturated compounds with polymerization (radiation-curing groups), D) optionally free radical stabilizers and E) photoinitiators.12-18-2008
20100104952METHOD OF PRODUCING VOLUME HOLOGRAM LAMINATE - A method of producing a volume hologram laminate which can regenerate a hologram image in an arbitrary wavelength by a simple process. The method uses a volume hologram forming substrate which includes: a substrate, a volume hologram layer formed on the substrate and containing a photopolymerizable material, a resin layer, formed on the substrate so as to contact to the volume hologram layer, containing a resin and a polymerizable compound. The producing method includes processes of: a hologram recording process to record a volume hologram to the volume hologram layer, a substance transit process of transiting the polymerizable compound to the volume hologram layer, and an after-treatment process of polymerizing the polymerizable compound.04-29-2010
20110311906PHOTOPOLYMER COMPOSITIONS AS PRINTABLE FORMULATIONS - The invention relates to applying novel photo polymers based on special urethane acrylates as writing monomers in printing methods which are suitable for producing holographic media, in particular for the visual display of images.12-22-2011
20110311905METHOD FOR PRODUCING HOLOGRAPHIC PHOTOPOLYMERS ON POLYMER FILMS - The invention relates to a method for producing novel photopolymers on the basis of prepolymer-based polyurethane compositions that are suitable for producing holographic media, in particular for the visual display of images.12-22-2011
20120214090METHOD FOR PRODUCING HOLOGRAPHIC MEDIA - The invention relates to a method for producing holographic media, wherein a photopolymer formulation comprising matrix polymers, writing monomers, a photoinitiator system, and optionally auxiliary materials and additives as components is provided, the photopolymer formulation is applied as a coating on the surface of a carrier film and the photopolymer formulation is dried on the carrier film at a temperature XXYY DEG C., wherein only those compounds having TGA 95 values >100 DEG C. and at least 30 DEG C. above the temperature T are selected as components for the photopolymer formulation. The invention further relates to a holographic medium that can be obtained by means of the method according to the invention.08-23-2012
20120214089METHOD FOR PRODUCING A HOLOGRAPHIC FILM - The invention relates to a method for producing holographic films, in which a photopolymer formulation is provided which comprises as constituents matrix polymers, writing monomers, a photoinitiatior system, optionally a non-photopolymerizable component and optionally catalysts, radical stabilizers, solvents, additives and other auxiliaries and/or additives. The photopolymer formulation is applied in a planar manner and in the form of a film on a support film and the photopolymer formulation is dried on the support film at a temperature 60100 DEG C and are above the temperature T by at least 30 DEG C, and a photopolymer formulation having a plateau module of =0.030 MPa is used.08-23-2012
20090233181POROUS HOLOGRAPHIC FILM - The present invention relates to a method for the manufacture of a holographic film. The method includes a polymerizable composition that comprises monomers with high reactivity, monomers with low reactivity and a non-reactive material. The method comprises a patterned exposure to obtain a patterned polymerization of the monomers with high reactivity and a subsequent polymerization to polymerize also monomers with low reactivity to form a solid film. The method gives a holographic film with a high refractive index modulation and a modulated porosity.09-17-2009
20090123852Hard-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 plurality of multi-color pellets to compose a picture. Each of the multi-color pellets comprises the distinct coloring regions distinguishable by the eyes so that a viewer can obtain different color-varying visional feeling from the pattern when the hard-material carrier is resting and looked at from different view angles.05-14-2009
20090004571Optically Variable Security Device - A method of forming a security device comprises: 01-01-2009
20130071773HOLOGRAPHIC STORAGE MEDIUM - Disclosed herein are novel amidic nitrone and a method of manufacturing a data storage media comprising mixing the amidic nitrone, as a photochromic dye, with an organic material or an inorganic material to form a holographic composition and molding the holographic composition into holographic data storage media. Disclosed herein too is an article comprising a photochromic dye and an organic material, wherein the article is used as a data storage media. Disclosed herein too is a method for recording information comprising irradiating an article that comprises a photochromic dye, wherein the irradiation is conducted with electromagnetic energy having a wavelength of about 350 to about 1,100 nanometers; and reacting the photochromic dye.03-21-2013
20110003240Method for forming holograms - A reflection type hologram recording optical system is provided which implements a method for forming a light reflection hologram having uniform reflectivity. The method includes: focusing a first laser beam through one of a pair of objective lenses, the first beam satisfying the condition given by, 4λn/(NA)01-06-2011
20090305146Optical recording medium and method for manufacturing the same - An optical recording medium includes a support substrate and an information recording layer which is supported on the support substrate and made of a photosensitive material which is irradiated with light to be refractive index modulated and amplitude modulated, thereby recording information. The information recording layer has the shape of a coating which is formed by applying a photosensitive material reversibly dissolved or dispersed in an organic solvent onto the support substrate. The photosensitive material in the shape of a coating, as a photopolymer for hologram recording material, contains the cross-linked matrix to maintain the rigidity of the recording material. The optical recording medium is retained in shape with stability, and particularly prevented from being deformed due to shrinkage, thereby facilitating manufacturing of the optical recording medium.12-10-2009
20130071774SYSTEM AND METHOD FOR PROJECTION LITHOGRAPHY WITH IMMERSED IMAGE-ALIGNED DIFFRACTIVE ELEMENT - A novel system and method and computer program product for exposing a photoresist film with patterns of finer resolution than can physically be projected onto the film in an ordinary image formed at the same wavelength. A hologram structure containing a set of resolvable spatial frequencies is first formed above the photoresist film. An illuminating wavefront containing a second set of resolvable spatial frequencies is projected through the hologram, forming a new set of transmitted spatial frequencies that expose the photoresist. The transmitted spatial frequencies include sum frequencies of higher frequency than is present in the hologram or illuminating wavefront, increasing the resolution of the exposing pattern. A further method is described for designing lithographic masks to fabricate the hologram and to project the illuminating wavefront. In other embodiments, a simple personalization based on Talbot fringes and plasmonic interference is performed.03-21-2013
20090092904HOLOGRAM RECORDING MEDIUM - The present invention provides a hologram recording medium wherein, in holographic memory recording using a blue laser as well as a green laser, a fall in light transmittance is very small even after recording. A hologram recording medium comprising at least a hologram recording material layer, wherein the hologram recording material layer (04-09-2009
20130059233PHOTOPOLYMER 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.03-07-2013
20130065159COLOR HOLOGRAPHIC OPTICAL ELEMENT - A process for producing a color holographic optical element in a real-time interactive multi-channel auto-stereoscopic color image display system, including producing light comprising at least three different monochromatic parts of the optical spectrum from one or more lasers and illuminating a holographic plate with the light from different directions and recorded on a panchromatic light sensitive recording material coated on a suitable substrate.03-14-2013
20100086860PHOTOPOLYMER 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.04-08-2010
20120237856SELECTION 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 contain at least one softener which are selected according to the claimed method. The invention also relates to the use of photopolymer formulations for producing holographic media.09-20-2012
20090181313PIGMENT LAYER AND METHOD ESPECIALLY FOR A DURABLE INSCRIPTION OF GLASS USING A HIGH ENERGY RADIATION - A pigment layer intended more particularly for the permanent marking of glass, based on a polymer matrix which reacts predominantly with pulverization to a high-energy beam, more particularly to laser irradiation, and comprising at least one titanium compound and free carbon.07-16-2009
20110287343HOLOGRAM RECORDING MATERIAL AND HOLOGRAM RECORDING MEDIUM - The present invention provides a hologram recording material and a hologram recording medium that can stably maintain the shape of a recording layer and achieve high diffraction efficiency. A hologram recording material comprising a photoradical polymerizable compound (A), a photopolymerization initiator (B), and a dispersion medium (C). The medium (C) is selected from the group consisting of: a compound of the formula (I):11-24-2011
20090286165HOLOGRAM 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 protection layer is coated on one surface of the hologram record layer. The surface protection layer is made of an energy ray curing resin.11-19-2009
20090098467Holographic Sensor Based on a Volume Hologram in a Porous Medium - A sensor for the detection of an analyte, comprising a holographic element comprising a medium and a hologram disposed throughout the volume of the medium, wherein an optical characteristic of the hologram changes as a result of a variation of a physical property occurring throughout the volume of the medium, wherein the medium is obtainable by formation in situ in the presence of a pore-forming agent, wherein the agent is not present in the sensor or does not react with the analyte and the sensor.04-16-2009
20090162756Multi-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 (06-25-2009
20090191467IMAGE-FORMED OBJECT AND METHOD FOR PRODUCING THE SAME - The present invention provides an image-formed object having security property improved, in which, even in the case where the image-formed object comprises a plurality of optical diffraction structures, the presence of each optical diffraction structure is hardly recognized.07-30-2009
20100266936PHOTOSENSITIVE COMPOSITION FOR VOLUME HOLOGRAM RECORDING, PHOTOSENSITIVE MEDIUM FOR VOLUME HOLOGRAM RECORDING AND VOLUME HOLOGRAM - The volume hologram recording photosensitive composition provided by the present invention contains at least a fluorine-contained photoreactive compound represented by the following formula (1): R10-21-2010
20100266935LOW-COST TOUGH DECORATIVE PRINTABLE FILM PRODUCTS HAVING HOLOGRAPHIC-TYPE IMAGES - Tough decorative printable film products having holographic-type images are provided that are low in cost. These film products include a relatively high temperature film that is made by continuous extrusion of the film resin onto a master film having pre-etched holographic-type imaging in order to provide a high-temperature primary film with conforming holographic imaging. This primary film provides a tough holographic-type image that is readily secured to any number of products to impart a holographic character to them. For example, this primary film is suitable for use on the surface of recreational sportsboards. When desired, sublimation printing can be used to impart indicia, text, images and colors, alone or in combination, to the primary film.10-21-2010
20110262845METHOD FOR MODULATING LIGHT OF PHOTOREFRACTIVE COMPOSITION WITHOUT EXTERNAL BIAS VOLTAGE - A method for modulating light, comprising the steps of providing a photorefractive composition containing a sensitizer and a polymer, wherein the sensitizer includes at least one selected from the group consisting of anthraquinone, -nitro-9-fluorenone and 2,7-dinitro-9-fluorenone and irradiating the photorefractive composition with a laser. The photorefractive composition provides a grating without using an external bias voltage.10-27-2011
20080268349HOLOGRAM RECORDING MATERIAL, PROCESS FOR PRODUCING THE SAME AND HOLOGRAM RECORDING MEDIUM - The present invention provides a hologram recording material which is suitable for volume hologram record and attains high refractive index change, flexibility, high sensitivity, low scattering, environment resistance, durability, low shrinkage and high multiplicity in holographic memory record using not only a green laser but also a blue laser; a process for producing the same; and a hologram recording medium having the hologram recording material. A hologram recording material comprising: a metal oxide containing at least Si and Zr as metals, wherein an aromatic carboxylic acid compound is coordinated to Zr; and a photopolymerizable compound. The aromatic carboxylic acid compound is, for example, toluic acid. A hologram recording medium (10-30-2008
20100086861SPECIAL 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 different types.04-08-2010
20090087753VOLUME PHASE HOLOGRAM RECORDING MATERIAL, PRODUCTION PROCESS THEREFOR, AND RECORDED MATERIAL - It is an object of the present invention to provide a photopolymer-based volume phase hologram recording material that can record/reproduce image information with excellent properties in terms of bit error rate (BER) or signal to noise ratio (SNR), which expresses the ratio of digital signal to noise, and that is suitable for application to holographic information recording, etc., and to provide a volume phase hologram recorded material employing the material. In accordance with the present invention, it is possible to record/reproduce a volume phase hologram with reduced noise, etc. in data hologram recording by a produced polymer that has been polymerized by means of interference fringes generated by interference between information light and reference light, the produced polymer having a weight-average molecular weight of 1,000 to 3,000,000. Furthermore, when a hologram is recorded using information light and reference light, the present invention provides a volume phase hologram recording material that comprises a chain transfer agent.04-02-2009
20100086859HOLOGRAM RECORDING MATERIAL AND HOLOGRAM RECORDING MEDIUM - The present invention provides a hologram recording material and a hologram recording medium, which are suitable for volume hologram record and can attain high refractive index change, flexibility, high sensitivity, low scattering, environment resistance, that is, storage stability, durability, low dimensional change (low shrinkage) and high multiplicity in holographic memory recording using not only a green laser but also a blue laser. A hologram recording material comprising: a radical photopolymerizable compound; and a matrix which is a dispersion medium for the radical photopolymerizable compound, wherein the radical photopolymerizable compound comprises a (meth)acrylamide derivative represented by the following general formula (I): CH04-08-2010
20110200918PHOTOSENSITIVE COMPOSITION FOR VOLUME HOLOGRAM RECORDING AND PRODUCING METHOD THEREOF - A photosensitive composition (I) for volume hologram recording includes a binder polymer (A), a photo-induced cationically polymerizable compound (B), a photoinitiator (C), and a sensitizing dye (D), in which the binder polymer (A) is a polymer containing naphthalene rings and having a weight-average molecular weight of 1×1008-18-2011
20090142672OPTICAL RECORDING COMPOSITION AND HOLOGRAPHIC RECORDING MEDIUM - The present invention provides an optical recording composition comprising a compound denoted by general formula (I) and a holographic recording medium comprising a recording layer, wherein the recording layer comprises a compound denoted by general formula (I).06-04-2009
20120295185Holographic Reticle and Patterning Method - A hologram reticle and method of patterning a target. A layout pattern for an image to be transferred to a target is converted into a holographic representation of the image. A hologram reticle is manufactured that includes the holographic representation. The hologram reticle is then used to pattern the target. Three-dimensional patterns may be formed in a photoresist layer of the target in a single patterning step. These three-dimensional patterns may be filled to form three-dimensional structures or else used in a multi-surface imaging composition. The holographic representation of the image may also be transferred to a top photoresist layer of a top surface imaging (TSI) semiconductor device, either directly or using the hologram reticle. The top photoresist layer may then be used to pattern an underlying photoresist layer with the image. The lower photoresist layer is used to pattern a material layer of the device.11-22-2012
20090274961Photosensitive 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 curing shrinkage. The photosensitive composition for volume type hologram memory of the present invention comprises a photo-curable volume expansion compound and a photoinitiator. According to the photosensitive composition for volume type hologram memory of the present invention, a composition of superior photosensitivity and large differences in reflective index before and after photo-curing and controllable curing shrinkage with photo-curable volume expansion composition can be provided.11-05-2009
20100129734Polypropylene Providing Improved Surface Properties - Propylene based films and methods of forming the sate are described herein. The propylene based films generally include a core layer formed of an olefin polymer, an embossing layer disposed on an exterior surface of the core layer and entirely formed of a metallocene formed propylene based polymer selected from propylene homopolymers, propylene based random copolymers formed of of polypropylene and polyethylene and combinations thereof, wherein the embossing layer includes an outer surface having a marking formed thereon and wherein the film is capable of retaining the marking thereon.05-27-2010
20080311482Radiation-crosslinking and thermally crosslinking PU systems comprising iminooxadiazinedione - The present invention relates to polyurethane compositions which cure by radiation and thermal action with crosslinking, and use thereof for the production of holographic media. The polyurethane compositions of the invention comprise A) one or more iminooxadiazinedione-group-containing polyisocyanates, B) one or more polyfunctional, isocyanate-reactive compounds, C) one or more compounds having groups which on exposure to actinic radiation with ethylenically unsaturated compounds with polymerization (radiation-curing groups), D) optionally one or more free radical stabilizers and E) one or more photoinitiators.12-18-2008
20110207029MEDIA FOR VOLUME-HOLOGRAPHIC RECORDING BASED ON SELF-DEVELOPING POLYMER - The present invention relates to novel self-developing films for incorporation of volume holograms by exposure, a method for production thereof and the use thereof.08-25-2011
20090170008HOLOGRAPHIC RECORDING COMPOSITION AND HOLOGRAPHIC RECORDING MEDIUM - The present invention provides a holographic recording composition comprising a compound denoted by general formula (I) and a holographic recording medium comprising a recording layer, wherein the recording layer comprises a compound denoted by general formula (I).07-02-2009
20080241706HOLOGRAPHIC DATA STORAGE MEDIUM AND FABRICATION METHOD THEREOF - A holographic data storage medium and a fabrication method thereof are provided. First, a precursor solution including an ultraviolet curable adhesive composition including a monomer having at least one (meth)acryloyl group in the molecule and an oligomer having at least two (meth)acryloyl groups in the molecule, a photopolymerizable organic compound and a photoinitiator including 2, 4, 6 trimethyl benzoldiphenyl phosphine oxide is provided. Next, a first substrate and a second substrate are attached to one another such that a gap is formed between the first and second glass substrates. Next, the precursor solution is filled into the gap. Next, the precursor solution between the first and second substrates is irradiated with a light in an atmosphere of an inert gas to induce photo-polymerization reaction to form the recording layer.10-02-2008
20080286658HOLOGRAPHIC RECORDING MEDIUM AND METHOD OF MANUFACTURING HOLOGRAPHIC RECORDING MEDIUM - A holographic recording medium with a plurality of layers including a recording layer, on which are recorded interference patterns generated by interference of information light and reference light. The recording layer is attached to at least one adjacent layer with adhesive.11-20-2008
20080305405OPTICAL RECORDING COMPOSITION, HOLOGRAPHIC RECORDING MEDIUM, AND METHOD OF RECORDING AND REPRODUCING INFORMATION - The present invention provides an optical recording composition comprising a radical polymerizable monomer having a wavelength λ12-11-2008
20100003606PROCESS FOR PRODUCING HOLOGRAMS - In a process for processing a hologram, a holographic image is formed in a photopolymer layer carried on a substrate. A colour tuning film is applied to the opposed photopolymer layer to form a laminate. The temperature of the laminate is raised and is subsequently cooled and is then exposed to a source of curing electromagnetic radiation.01-07-2010
20080305404Hologram Recording Material - The present invention provides a hologram recording material which can modulate its refractive index effectively with visible light laser and is excellent also in transparency after this modulation. The present invention relates to a hologram recording material comprising a polymer (A) having a radically polymerizable side chain vinyl group in the molecule thereof, said polymer (A) being a polymer of monomers comprising as an essential component an acryl-vinyl monomer represented by the following formula (1):12-11-2008
20100143827Methods of Making Holographic Devices - A method of making a holographic device (06-10-2010
20090297955OPTICAL RECORDING COMPOSITION, HOLOGRAPHIC RECORDING MEDIUM, AND METHOD OF RECORDING AND REPRODUCING INFORMATION - The present invention relates to an optical recording composition comprising at least one optical recording compound, wherein the optical recording compound is denoted by general formula (I) and exhibits a molar absorbance coefficient of equal to or greater than 5,000 mole·l·cm12-03-2009
20090246642HOLOGRAPHIC DETECTION OF ANALYTE BY ACTIVE DYE - We propose a method of detecting the presence of certain chemical and biochemical substances by virtue of the fact that they are, or have attached to them, either a dye molecule which acts as a photosensitizer for a holographic recording process, or another essential molecular component of the holographic recording material such as a monomer or a free radical generator. A recording material used in the process utilizes a photopolymer system consisting of a monomer and a crosslinking monomer, a free radical generator, a photosensitizer and, additionally, a polymeric binder when dry formulations are required and specifically lacks the substance to be detected. Subsequent holographic exposure records an interference pattern only where the complementary substance is present. Applications are broad ranging. Examples in diagnostics, printing, security, and environmental monitoring are given.10-01-2009
20090246643PHOTOSENSITIVE 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 method of a pattern.10-01-2009
20090325078HOLOGRAPHIC RECORDING MEDIUM - A holographic recording medium including an optically transparent substrate is provided. The optically transparent substrate includes an optically transparent plastic material and a photochemically active dye. The optically transparent substrate has an absorbance of greater than 1 at a wavelength that is in a range of from about 300 nanometers to about 1000 nanometers. The holograms recorded in the optically transparent substrate are capable of having diffraction efficiencies of greater than about 20 percent. The holographic recording medium may include a photo-product. A method of making the holographic recording medium, an optical writing and reading method, a method for using a holographic recording article, and a method of manufacturing the holographic recording medium are provided.12-31-2009
20090325079Data storage medium comprising colloidal metal and preparation process thereof - Disclosed is a photopolymerizable holographic recording medium for data storage that comprises colloidal metal, and which exhibits a threshold for a second stage polymerization which is substantially insensitive to the light used for both forming holograms and interrogating the medium during servo and/or read events. Also disclosed is a method of preparing said photopolymerizable holographic recording medium. Also disclosed is a method for preparing a colloidal without additives in a viscous medium.12-31-2009
20090081560COMPOSITIONS AND METHODS FOR STORING HOLOGRAPHIC DATA - The present invention provides a method for storing holographic data comprising providing a holographic storage medium comprising an optically transparent substrate including a photochemically active dye having at least two nitrone groups; and irradiating the optically transparent substrate with a holographic interference pattern, wherein the pattern has a first wavelength and an intensity both sufficient to convert, within a volume element of the substrate, at least some of the photochemically active dye into a photo-product, and producing within the irradiated volume element concentration variations of the photo-product corresponding to the holographic interference pattern, thereby producing a first optically readable datum corresponding to the volume element.03-26-2009
20090053617HOLOGRAPHIC RECORDING MEDIUM - A holographic recording medium includes: a recording layer in which is recordable an interference pattern formed by interference of a plurality of laser beams; a pair of substrates between which is arranged the recording layer; and a spacer positioned between the substrates so as to cover an outer perimetrical surface of the recording layer. Each substrate and the spacer have mating faces at which the substrate and the spacer are interengageable and bonded together with an adhesive agent. A cross-sectionally recessed portion is formed in the mating face of one of the substrate and the spacer, whereas a corresponding cross-sectionally protruding portion is formed on the mating face of the other one of the spacer and the substrate, allowing one mating face to be fitted into another.02-26-2009
20090253050HOLOGRAPHIC STORAGE MEDIA - Described are holographic storage mediums and method of making holographic storage mediums. The holographic storage mediums may have write components that bind to the matrix to form a pattern in the media. The holographic storage mediums may also be rewriteable.10-08-2009
20110236803PHOTOPOLYMER 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 contains a HABI, a dye attuned to the HABI and having an absorption maximum in the range of 400-800 nm and a hydrogen donor. The present invention further relates to a process for producing exposed holographic media with the above photopolymer formulation.09-29-2011
20100216060METHOD AND SYSTEM FOR PRODUCING MULTIPLE IMAGES IN A SINGLE IMAGE PLANE USING DIFFRACTION - Methods create images viewable under different selected angles on optical storage devices and other photosensitive surfaces and optical storage devices with super-imposed images. Generally, a photosensitive surface is exposed with multiple diffraction patterns creating super-imposed images. These diffraction patterns create super-imposed images on the photosensitive surfaces, which can be read by either a human or a computer.08-26-2010
20100035163Fabrication of nanostructured devices - Embodiments of the invention relate to methods useful in the fabrication of nanostructured devices for optics, energy generation, displays, consumer electronics, life sciences and medicine, construction and decoration. Instead of nanostructuring using colloids of particles, special vacuum deposition methods, laser interference systems (holography), and other low-throughput limited surface area techniques, we suggest to use nanotemplate created by novel nanolithography method, “Rolling mask” lithography. This method allows fast and inexpensive fabrication of nanostructures on large areas of substrate materials in conveyor-type continuous process. Such nanotemplate is then used for selective deposition of functional materials. One of embodiments explains deposition of functional materials in the exposed and developed areas of the substrate. Another embodiment uses selective deposition of the functional material on top of such template. Alternatively, nanotemplate is deposited and patterned on functional material, and then used as an etch mask to transfer nanostructure into the functional material using dry or wet etching process.02-11-2010
20100239962TWO-PHOTON ABSORBING OPTICAL RECORDING MATERIAL AND TWO-PHOTON ABSORBING OPTICAL RECORDING AND REPRODUCING METHOD - A two-photon absorbing optical recording material comprising at least one two-photon absorbing compound and a recording component is provided. Recording is made on it by utilizing the two-photon absorption of the two-photon absorbing compound in the material, and then the material is irradiated with light to thereby detect the difference in the reflectance between the recorded area and the unrecorded area thereof, and the recorded information is thereby reproduced from the material, and also provided are a photosensitive polymer composition and a photon-mode recording method for the material.09-23-2010
20100221646HOLOGRAPHIC RECORDING MEDIUM - A holographic recording medium includes a recording layer. The recording layer includes a framework being expressed with the following general formula (1),09-02-2010
20100216058BLOCK TERPOLYMER WITH CONFINED CRYSTALLIZATION - A polyester block terpolymer comprising an amorphous block comprising a polystyrene dicarboxylate; a crystallizable block comprising a polyethylene glycol; and an aliphatic diol block; wherein the amorphous block is a continuous phase and the crystallizable block is a dispersed phase, and wherein the dispersed phase is less than about 200 nanometers in size.08-26-2010
20090042105Sensitizer dyes for photoacid generating systems - Photosensitizing dyes are often used in conjunction with a photoacid generator in holographic recording media. Conventional photosensitizing dyes typically are limited by having an appreciable absorption of light when used in a sufficient concentration, such that the intensity of light decreases significantly with penetration into a recording medium. The present invention discloses a number of new 5-alkynyl substituted napthacene photosensitizing dyes that have low extinction coefficients coupled with good sensitizing properties, such that the problems associated with the photosensitizing dyes absorbing light are significantly reduced.02-12-2009
20100221645FILM HAVING HOLOGRAM PATTERN AND CONTAINER HAVING HOLOGRAM PATTERN - There is provided a film having hologram pattern and a container having hologram pattern which prevents the hologram pattern from disappearing by liquid droplets, sebum, and sweat being adhered to the hologram pattern, and in which, the hologram pattern can be checked visually, without selecting a state and a condition of storage, transportation, and arrangement, during a period after manufactured till consumed. The film having hologram pattern of the present invention which is to be used by disposing on an outer surface of an object includes a hologram-pattern forming layer, on one surface of which, a hologram pattern is formed, and a thin-film layer is formed along that shape, on the hologram pattern, and at least one layer which is disposed at an outer side of the hologram-pattern forming layer.09-02-2010
20090053616HOLOGRAPHIC RECORDING MEDIUM - A holographic recording medium is provided, which includes a recording layer. The recording layer comprises a radical polymeric monomer having an aromatic ring-containing group and a polymeric group, a polymer matrix having the aromatic ring-containing group, and a photo-radical polymerization initiator.02-26-2009
20090130568Photosensitive Resin Composition for Volume Phase Hologram Recording and Optical Information Recording Medium Using the Same - Disclosed is a volume phase hologram recording material characterized by excellent photosensitivity, low cure shrinkage, high transparency, and particularly good storage stability and also disclosed is a recording medium prepared therefrom. Further disclosed is a photosensitive resin composition for volume phase hologram recording that comprises a soluble aromatic copolymer (A), a photoradically polymerizable compound (B) capable of copolymerizing with the soluble aromatic copolymer (A), a photopolymerization initiator (C), and a polymer binder (D). The soluble aromatic copolymer (A) has a structural unit of a divinyl aromatic compound and a structural unit of a monovinyl aromatic compound, comprises 10 to 90 mol % of a structural unit represented by the following formula (a1), has a hydroxyl equivalent of 100 to 30,000 g/equiv, a number average molecular weight (M05-21-2009
20100216059POLYMER COMPOSITES WITH CONFINED CRYSTALLIZATION - A polymer composite prepared by melt blending, comprising an amorphous polymer; and a crystallizable polymer; wherein upon cooling the polymer composite, the amorphous polymer forms a continuous phase and the crystallizable polymer forms a dispersed phase, and wherein the dispersed phase is less than 200 nanometers in size.08-26-2010
20090258301Fabricating and using hidden features in an image - Some implementations of the invention provide hidden static images. Some such images can only be perceived when viewed from an angle to the normal to a surface. Such images may appear as a solid color when viewed along an axis perpendicular to a surface, but may reveal a hidden image when viewed from an angle relative to that axis. The hidden image may be defined according to interfaces between areas that pass substantially the same wavelength when viewed along the axis, but which pass noticeably different wavelengths when viewed from an angle relative to that axis. The hidden images may or may not be discernable to a human observer. The hidden image may comprise a code that is not readable by an optical scanner positioned to read along an axis normal to a surface, but that is readable by an optical scanner positioned to read along another axis.10-15-2009
20110081602OPTICAL DATA STORAGE MEDIA AND METHODS FOR USING THE SAME - An optical data storage medium is provided. The optical data storage medium includes a polymer matrix; a reactant capable of undergoing a change upon triplet excitation, thereby causing a refractive index change; and a non-linear sensitizer capable of absorbing actinic radiation to cause upper triplet energy transfer to said reactant. The refractive index change capacity of the medium is at least about 0.1. The reactant comprises polyvinyl chlorocinnamate, polyvinyl methoxycinnamate, or a combination thereof.04-07-2011
20080254375HOLOGRAM RECORDING MATERIAL AND HOLOGRAM RECORDING MEDIUM - The present invention provides a hologram recording material which is suitable for volume hologram record and can attain high refractive index change, flexibility, high sensitivity, low scattering, environment resistance, that is, storage stability, durability, low dimensional change (low shrinkage) and high multiplicity in holographic memory record using not only a green laser but also a blue laser. A hologram recording material comprising: a metal oxide matrix; and a photopolymerizable compound which has at least one (meth)acrylamide group as a photo-reactive group, and has a polyalkylene glycol unit represented by the following formula:10-16-2008
20090142671OPTICAL RECORDING COMPOSITION AND HOLOGRAPHIC RECORDING MEDIUM - The present invention provides an optical recording composition comprising a compound denoted by general formula (I) and a holographic recording medium comprising a recording layer, wherein the recording layer comprises a compound denoted by general formula (I).06-04-2009
20090081561PHOTOSENSITIVE COMPOSITION, OPTICAL RECORDING MEDIUM AND METHOD FOR MANUFACTURING SAME, OPTICAL RECORDING METHOD, AND OPTICAL RECORDING APPARATUS - The present invention provides a photosensitive composition containing (A) a photoreactive material, (B) an epoxy compound having an average epoxy equivalent of 230 g/eq. or less and having two or more epoxy groups in the molecule thereof, and (C) a thiol group-containing compound, which is used for forming a recording layer which records information using holography. In the photosensitive composition, preferably, (B) the epoxy compound reacts with (C) the thiol group-containing compound to form a polymerized product. The present invention also provides an optical recording medium having a recording layer formed of the photosensitive composition.03-26-2009
20080213675Interrogation of a Light-Sensitive Sensor - A sensing method comprises irradiating a sensor having a medium including a light-sensitive holographic element, and observing a change in the holographic image.09-04-2008
20080254373Method of making PDR and PBR glasses for holographic data storage and/or computer generated holograms - Methods of making volume phase holograms and/or making computer-generated holograms using silver ion-exchanged silicate glass articles that include a photo-darkenable-refractive (PDR) glass plate and/or a photo-bleachable-refractive (PBR) glass plate. In one embodiment, a method of forming a volume phase hologram includes the steps of making a PBR glass plate that has at least one photosensitive glass layer of a silver ion-exchanged holographic recording (SIHR) glass, and of exposing the photosensitive glass layer to the bleaching-light radiation of laser write beams, causing the volume phase hologram to form in the photosensitive glass layer of the PBR glass plate. The base glass composition of the SIHR glass has been ion-exchanged in an aqueous ion-exchange solution containing silver ions. The SIHR glass is then uniformly darkened with darkening-light radiation. This process causes the photosensitive glass layer of the PBR glass plate to show a change in refractive index upon exposure to the bleaching-light radiation without any post-exposure treatment.10-16-2008
20080254372PDR and PBR glasses for holographic data storage and/or computer generated holograms - Silicate glasses for storing holographic data and for producing computer-generated holograms, including photo-darkenable-refractive (PDR) and photo-bleachable-refractive (PBR) glasses. In one embodiment, a PBR glass plate contains a photosensitive glass layer of a silver ion-exchanged holographic recording (SIHR) glass, with a base glass composition that has been ion-exchanged in an aqueous ion-exchange solution containing silver ions. The SIHR glass is uniformly darkened with darkening-light radiation, causing a refractive index change in the photosensitive glass layer upon exposure to bleaching-light radiation without any post-exposure steps. In another embodiment, an optical information recording medium includes a PDR glass plate containing SIHR glass optimized for multiplex recording and for reproducing information, which utilizes holography with darkening-light radiation as recording beams. In still another embodiment, an optical information recording medium includes a PBR glass plate containing SIHR glass optimized for multiplex recording and for reproducing information, which utilizes holography with bleaching-light radiation as recording beams.10-16-2008
20110020736METHOD OF PRODUCING HOLOGRAPHIC IMAGES OF IC TOPOLOGIES - The invention is aimed at producing a layout with high technological characteristics including a reduction of departure of an obtained layout geometry from a given layout geometry, an increase of a contrast of the obtained layout and a decrease of noise levels in illuminated and not illuminated areas of the layout. This is achieved by converting an initial layout image into a digital pattern; recording an amplitude and phase information, which characterizes each dot of the pattern as an extended or a point radiator; computing a diffraction picture in each dot of the future hologram created from the whole set of radiators—elements of this pattern and its interference with a calculated reference wavefront; employing the obtained result for hologram creation; and obtaining the hologram as a set of discrete elements, which differ by their optical properties.01-27-2011
20110053055COMPOSITIONS, OPTICAL DATA STORAGE MEDIA AND METHODS FOR USING THE OPTICAL DATA STORAGE MEDIA - There are provided compositions, optical data storage media and methods of using the optical data storage media. The compositions comprise a non-linear sensitizer comprising one or more subphthalocyanine reverse saturable absorbers capable of absorbing actinic radiation to cause upper triplet energy transfer to a reactant that undergoes a photochemical change upon triplet excitation.03-03-2011
20110053054COMPOSITIONS, OPTICAL DATA STORAGE MEDIA AND METHODS FOR USING THE OPTICAL DATA STORAGE MEDIA - There are provided compositions, optical data storage media and methods of using the optical data storage. The compositions comprise a non-linear sensitizer comprising one or more platinum ethynyl complexes capable of absorbing actinic radiation to cause upper triplet energy transfer to a reactant that undergoes a photochemical change upon triplet excitation.03-03-2011
20110027697Holographic Recording Medium - A composition for holographic recording is provided, comprising an inert polyphenyl ether binder capable of supporting radical polymerization, wherein the inert binder is substantially transparent in visible light, and is viscous at room temperature; a photopolymerizable part comprising a matrix forming component comprising at least one radically photopolymerizable multifunctional (meth)acrylic oligomer or monomer, and a radically polymerizable recording component; and a photoinitiation system capable of initiating radical polymerization.02-03-2011
20100285398TAMPER INDICATING ARTICLE - Tamper indicating articles that include a surface-feature image-generating layer and an adhesive layer are described. The surface-feature image-generating layer generates a visible, surface-feature-generated image upon exposure to light. The intensity of the surface-feature-generated image is reduced when taped-over. Single-image and dual-image tamper indicating articles are also described, including buried dual-image and adjacent dual-image tamper indicating articles.11-11-2010
20110262844Fabrication of high efficiency, high quality, large area diffractive waveplates and arrays - The objective of the present invention is providing a method for fabricating high quality diffractive waveplates and their arrays that exhibit high diffraction efficiency over large area, the method being capable of inexpensive large volume production. The method uses a polarization converter for converting the polarization of generally non-monochromatic and partially coherent input light beam into a pattern of periodic spatial modulation at the output of said polarization converter. A substrate carrying a photoalignment layer is exposed to said polarization modulation pattern and is coated subsequently with a liquid crystalline material. The high quality diffractive waveplates of the present invention are obtained when the exposure time of said photoalignment layer exceeds by generally an order of magnitude the time period that would be sufficient for producing homogeneous orientation of liquid crystalline materials brought in contact with said photoalignment layer. Compared to holographic techniques, the method is robust with respect to mechanical noises, ambient conditions, and allows inexpensive production via printing while also allowing to double the spatial frequency of optical axis modulation of diffractive waveplates.10-27-2011
20100167180Photosensitive Film for Holographic Recording and Production Method Thereof - A photosensitive film for holographic recording and its production method thereof are disclosed. The film comprises a base film, a buffer layer coated on one side of the base film, a photosensitive polymer coating layer formed by applying a photosensitive coating on the other side of the buffer layer, and a surface protective film covering the surface of the photosensitive polymer coating layer. Interference fringe patterns of a holographic image or an amphichronic graph are recorded in the photosensitive polymer coating layer. The film according to the present invention is a photosensitive material composed of two polymers of different refractive indexes, when coherent light beams intersect in its recording medium and produce an interference fringe pattern in the medium, monomers therein are excited accordingly and undergo free radical polymerization, thereby forming a hologram.07-01-2010
20100167179METHOD OF MAKING A REFLECTION HOLOGRAM AND A REFLECTION HOLOGRAM - The present application provides a method of manufacturing a reflection hologram. The method comprises the steps of placing a first pattern of activating material upon a layer of inactive holographic recording material to selectively activate the layer and exposing the layer to holographic recording process for producing a reflection hologram.07-01-2010
20120208110HOLOGRAPHIC STORAGE MEDIUM AND METHOD OF MAKING HOLOGRAPHIC STORAGE MEDIUM - Articles for recording a holographic image are described. The articles include a holographic recording medium having a plurality of surfaces, having a transparent polymeric binder and a photochemically active dye, the holographic recording medium having a holographic image recorded therein formed by exposed areas of the photochemically active dye and unexposed areas of the photochemically active dye; and a first light-blocking layer or material over a first surface of the holographic recording medium from which surface the holographic image is viewed, the light blocking layer or material absorbing light in the wavelength range to which the photochemically active dye is sensitive and allowing transmission of light in a different wavelength range for viewing the holographic image.08-16-2012
20090202921OPTICAL RECORDING COMPOSITION AND HOLOGRAPHIC RECORDING MEDIUM - The present invention provides an optical recording composition comprising at least one compound denoted by general formula (I) and a holographic recording medium comprising a recording layer, wherein the recording layer comprises at least one compound denoted by general formula (I).08-13-2009
20090202920OPTICAL RECORDING COMPOSITION AND HOLOGRAPHIC RECORDING MEDIUM - The present invention provides an optical recording composition comprising at least one optical recording compound selected from the group consisting of cyanine compounds having specific structures and a holographic recording medium comprising a recording layer, wherein the recording layer comprises at least one optical recording compound selected from the group consisting of cyanine compounds having specific structures.08-13-2009
20090197186OPTICAL DEVICES RESPONSIVE TO BLUE LASER AND METHOD OF MODULATING LIGHT - An optical device comprising a photorefractive composition configured to be photorefractive upon irradiation by a blue laser. The photorefractive composition comprises a polymer comprising a repeating unit including at least a moiety selected from the group consisting of the formulas (Ia), (Ib) and (Ic), as defined herein.08-06-2009
20090197187HOLOGRAM FABRICATION PROCESS AND FABRICATED HOLOGRAM - The invention provides a hologram in which a visually unidentifiable microtext or other micropattern of the order of 10 μm is recorded, and a process for the fabrication of the same. A volume hologram recording material 08-06-2009
20110189591PREPOLYMER-BASED POLYURETHANE FORMULATIONS FOR PRODUCING HOLOGRAPHIC MEDIA - The present invention relates to a polyurethane composition comprising 08-04-2011
20120308918Photosensitive Recording Material - The present application provides an improved photosensitive holographic recording composition. In particular, the improvement comes from adding glycerol.12-06-2012
20110117478HOLOGRAM PREPARATION METHOD, HOLOGRAM AND SECURITY MEDIUM USING SUCH HOLOGRAM - A method of preparing a hologram where an original image is recorded as interference fringes on a predetermined recording surface by arithmetic operations using a computer, the method including: a step of defining an original image formed as a three-dimensional image, a hologram recording plane for recording the original image, and reference light to be irradiated onto the hologram recording plane, a step of defining a large number of arithmetic operation points on the hologram recording plane and arithmetically determining the intensity of the interference wave formed by an object light beam emitted from each object and the reference light for each of the arithmetic operation points and a step of preparing physical interference fringes on a medium on the basis of the intensity distribution of interference wave obtained on the recording plane in the arithmetically determining step, the front-most part of the three-dimensional image being arranged near the hologram recording plane at the time of defining the original image.05-19-2011
20110117477Photopolymerizable Compositions - Currently known holographic recording media and sensors have a number of disadvantages, for example, silver halide-based recording media is expensive to produce and unsuitable for use in certain sensor applications, and photopolymer-based recording media make it difficult to record multiple holographic images, thus, generally, rendering them unsuitable for use in sensors. Holographic recording media according to an embodiment of the present invention may comprise a polymer matrix and a chemical group that dimerizes by forming a cyclic bridge through photocycloaddition. These holographic recording media are cost-effective, allow recording of multiple holographic images, and enable production of sensors with controlled observable response to an external stimulus.05-19-2011
20090186281METHOD FOR PRODUCING SILICON-CONTAINING COMPLEX OXIDE SOL, METHOD FOR PRODUCING SILICON-CONTAINING HOLOGRAM RECORDING MATERIAL, AND HOLOGRAM RECORDING MEDIUM - The present invention provides a method for producing a homogeneous complex oxide sol comprising Si and a metal other than Si as metal elements, and a method for producing a Si-containing hologram recording material using a homogeneous complex oxide sol. A method for producing a complex oxide sol comprising Si and a metal other than Si as metal elements, the method comprising: mixing a silanol compound with an alkoxide compound of a metal other than Si so that the silanol compound is reacted with the alkoxide compound, thereby yielding a precursor of a complex oxide, and adding water to the complex oxide precursor so as to hydrolyze an alkoxyl group bonded to the metal other than Si, and then making the resulting hydrolysate undergo a condensation reaction, thereby forming a complex oxide. A hologram recording medium (07-23-2009
20120009508LASER MARKING HOLOGRAM HAVING A VOLUME HOLOGRAM WITH INTERFERENCE FRINGES USING SELECTIVE IRRADIATION - The present invention is provided to enhance security of a volume hologram by recording therein individualized information such as information of character, numerical character, picture pattern, biometric matter and/or the like by irradiating laser light to the volume hologram thereby modifying the same physically or chemically, and is related to a laser marking hologram comprising a volume hologram layer 01-12-2012
20100112460COMPOSITION FOR FLUORINE-CONTAINING VOLUME HOLOGRAPHIC DATA RECORDING MATERIAL AND FLUORINE-CONTAINING VOLUME HOLOGRAPHIC DATA RECORDING MEDIA MADE OF SAME - The present invention provides a fluorine-containing volume holographic data recording material making it unnecessary to provide a step of eliminating a specific solvent even in the case of a thick film, and having high hologram performance and good dynamic range. There is provided a composition comprising a base polymer (a), a liquid monomer (b) and a photo-initiator (c), wherein the base polymer (a) is an amorphous polymer comprising a fluorine-containing monomer as a structural unit and having a fluorine content of 26 to 80% by mass, the liquid monomer (b) comprises at least one liquid monomer (b1) initiating polymerization by means of activated species generated from the photo-initiator (c), the photo-initiator (c) is a compound causing the liquid monomer (b1) to initiate polymerization by exposure to light having excellent coherence and, and a refractive index of the liquid monomer (b) is higher than an average refractive index of a mixture of the base polymer (a) and the photo-initiator (c).05-06-2010
20120058418THREE-DIMENSIONAL HOLOGRAPHIC DISPLAY DEVICE - A three-dimensional holographic display device includes a holographic display medium constituted by a photorefractive organic composition, and an optical system for recording and reproducing a holographic image using the holographic display medium. The photorefractive organic composition includes a photorefractive organic polymer having a tri-alkyl amino side-chain group.03-08-2012
20120208109REFLECTION HOLOGRAM STORAGE METHOD - A method is described for recording a volume reflection holographic image that is viewable when illuminated by light at a wavelength W08-16-2012
20120122021METHOD OF FORMING HOLOGRAM IMAGE, ELECTROSTATIC IMAGE DEVELOPING TONER AND HOLOGRAM IMAGE FORMING APPARATUS - A method of forming a hologram image comprising the steps of forming an electrophotographic image by forming an electrophotographic image area on an image support via an electrophotographic image forming method using a toner containing at least a thermoplastic resin; laminating an emboss hologram transferring member over the electrophotographic image so that a surface on which a corrugation profile is formed of the emboss hologram transferring member is in contact with the electrophotographic image area heating the electrophotographic image and the emboss hologram transferring member at a temperature not lower than a softening temperature of the toner while pressurizing the emboss hologram transferring member onto the electrophotographic image; cooling the electrophotographic image and the emboss hologram transferring member, and peeling the emboss hologram transferring member from the electrophotographic image, whereby the corrugation profile of the emboss hologram transferring member is transferred onto the electrophotographic image area.05-17-2012
20110129764Sensitive Liquid Crystalline Polymeric Material Suitable for Reflective Hologram Recording and the Preparing Method Thereof - A sensitive liquid crystalline polymeric material suitable for the reflective hologram recording and the preparing method thereof are disclosed. The material includes a base film, a buffer layer coated on one side of the base film, a sensitive polymeric layer coated on the other side of the buffer layer and a protective layer coated on the surface of the sensitive polymeric layer.06-02-2011
20100248088PHOTOPOLYMERISABLE 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 matrix compound being polymer or capable of forming a polymer upon polymerisation, and a photoinitiator system adapted to initiate the polymerisation of the photopolymerisable subunits. The molecules of the organic-inorganic compound are distributed on a molecular level in the photopolymerisable system.09-30-2010
20120219883METHOD FOR PRODUCING A HOLOGRAPHIC FILM - The invention relates to a method for producing a holographic film, wherein a photopolymer formulation comprising matrix polymers, writing monomers, photoinitiator system, and optionally auxiliary materials and additives is provided, the photopolymer formulation is applied as a film to the surface of a substrate, and the film is dried, wherein a photopolymer formulation having a plateau module G08-30-2012
20100173229SHRINKABLE LABEL HAVING A HOLOGRAM LAYER AND CONTAINER WITH THE LABEL - Provided is a shrinkable label having a hologram layer that suffers no whitening even after shrink processing with relatively large shrinkage. The label therefore fits even complicated dimensions of an article and, in addition, provides a superior holographic expression.07-08-2010
20120219885NOVEL 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 the invention as well as to use of said photopolymer formulation for producing holographic media.08-30-2012
20120178019METHOD OF MAKING HOLOGRAPHIC RECORDING MATERIALS AND ARTICLES FORMED THEREBY - A method of manufacturing an article for display of a holographic image is described that includes thermally fusing a holographic recording medium containing a photochemically active dye dispersed in a transparent thermoplastic polymer binder to another layer or material; and then exposing the holographic film to intersecting beams of coherent light to form a holographic image therein formed by photoreacted areas of the photochemically active dye and unreacted areas of the photochemically active dye.07-12-2012
20100273096PHOTOPOLYMER 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.10-28-2010
20100009269HOLOGRAPHIC RECORDING MEDIA - A holographic recording medium includes an optically transparent substrate. The optically transparent substrate includes an optically transparent plastic material, a photochemically active dye, and a protonated form of the photochemically active dye. The protonated form of the photochemically active dye is a composition having a structure as shown in formula I01-14-2010
20120219884PHOTOPOLYMER 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 matter of the invention is an illuminated, holographic medium that can be obtained by means of the method according to the invention.08-30-2012
20120231377PHOTOPOLYMER 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 invention further relates to the use of the photopolymer formulation for producing optical elements, in particular for producing holographic elements and images, to a method for producing the photopolymer formulation and to a method for illuminating holographic media made of the photopolymer formulation.09-13-2012
20120231376FLUOROURETHANE 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 particular for producing holographic elements and images, to a method for illuminating holographic media made of the photopolymer formulation, and to special fluorourethanes.09-13-2012
20110123911HOLOGRAPHIC RECORDING MEDIUM WITH CONTROL OF PHOTOPOLYMERIZATION AND DARK REACTIONS - The present invention relates to a system, as well as articles and holographic recording medium comprising the system, where the system comprises: a polymerizable component comprising at least one photoactive polymerizable material; and a photoinitiator component comprising at least one photoinitiator for causing the polymerizable component to polymerize to thereby form a plurality of holographic gratings when activated by exposure to a photoinitiating light source; wherein when a portion of the polymerizable component has been polymerized to form at least one holographic grating, the unpolymerized portion of the polymerizable component is resistant to further polymerization when not exposed to the photoinitiating light source. The present invention also provides methods for forming at least one holographic grating in a holographic recording medium having such a photopolymerizable system.05-26-2011
20100297538Holographic Reticle and Patterning Method - A hologram reticle and method of patterning a target. A layout pattern for an image to be transferred to a target is converted into a holographic representation of the image. A hologram reticle is manufactured that includes the holographic representation. The hologram reticle is then used to pattern the target. Three-dimensional patterns may be formed in a photoresist layer of the target in a single patterning step. These three-dimensional patterns may be filled to form three-dimensional structures or else used in a multi-surface imaging composition. The holographic representation of the image may also be transferred to a top photoresist layer of a top surface imaging (TSI) semiconductor device, either directly or using the hologram reticle. The top photoresist layer may then be used to pattern an underlying photoresist layer with the image. The lower photoresist layer is used to pattern a material layer of the device.11-25-2010
20080299464LENGTHY 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. The above problem can be solved by a lengthy volume hologram layer transfer foil according to the present invention, the transfer foil is formed lengthwise and comprises: a substrate, a volume hologram layer which is formed on the substrate and in which a volume hologram is recorded, and a heat seal layer which is formed on the volume hologram layer and which contains a thermoplastic resin, the transfer foil being characterized in that it is provided with a cut portion formed so as to penetrate through the heat seal layer and to cut at least a part of the volume hologram layer, on at least a part of the full width in a direction perpendicular to the longitudinal direction thereof.12-04-2008
20120321997URETHANES 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 formulation obtained according to said method, a sheeting, a film, a layer, a layer structure or a moulded body made from said photopolymer formulation and to the use of said photopolymer formulation for producing optical elements, in particular for producing holographic elements and images.12-20-2012
20120321998PHOTOPOLYMER 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), where R1, R2, R3 independent of each other are each a halogen atom or an organic radical, wherein at least one of the radicals is an organic radical comprising a radiation hardening group. The invention further relates to the use of the photopolymer formulation for producing holographic media.12-20-2012
20110236802METHOD FOR FABRICATING THE HOLOGRAPHIC GRATING - This invention discloses a method for fabricating a holographic grating with low diffractive wave aberrations on a substrate with aberrations. Forming a interference recording field from two coherent beams, where one is a parallel beam and the other is a beam whose wave-front can be controlled, recording the holographic field on the substrate with aberrations, fabricating the holographic grating with low diffractive wave aberrations, setting a deformable minor into one of the coherent recording beams, and controlling the shape of said deformable minor so as to obtain a compensated interference recording field. Expose the recoding plate under the holographic interference recording field which has been adjusted by the deformable minor to record the grating. After developing, the fabrication of holographic grating with low diffractive wave aberration is finished.09-29-2011
20090053615Photosensitive Resin Composition for Volume Phase Hologram Recording and Optical Information Recording Medium Using the Same - The present invention relates to a volume phase hologram recording material excellent in transparency, sensitivity, low curing shrinkage, and transparency, a volume phase hologram recording medium, and a volume phase hologram. A photosensitive resin composition for volume phase hologram recording contains a low-molecular-weight solvent-soluble aromatic copolymer (A) having a structural unit of a divinyl aromatic compound and a structural unit of a monovinyl aromatic compound, a photoradical polymerizable compound (B) which is copolymerizable with the soluble aromatic copolymer (A), and a photopolymerization initiator (C) as essential components. The photosensitive resin composition further contains, one kind or more of a polymer binder (D) and a plasticizer (E), and the soluble aromatic copolymer (A) is incorporated in an amount of 5 to 60% by weight.02-26-2009
20120328973METHOD OF RECORDING DATA IN AN OPTICAL DATA STORAGE MEDIUM AND AN OPTICAL DATA STORAGE MEDIUM - In accordance with one aspect of the present invention, a method for recording holographic data in an optical data storage medium is provided. The method includes (i) providing an optical data storage medium including: (a) a thermoplastic polymer matrix, (b) a latent acid generator, (c) a non-linear sensitizer, and (d) a reactant including a latent chromophore. The method further includes (ii) irradiating a volume element of the optical data storage medium with an interference pattern, said interference pattern including an incident radiation having a wavelength and an intensity sufficient to cause upper triplet energy transfer from the non-linear sensitizer to the latent acid generator, thereby generating an acid, wherein the latent acid generator is substantially non-responsive to said incident radiation. The method furthermore includes (iii) reacting at least one protected chromophore with the acid generated to form at least one chromophore, thereby causing a refractive index change within the volume element; and (iv) producing within the irradiated volume element refractive index variations corresponding to the interference pattern, thereby producing an optically readable datum. An optical data storage medium is also provided.12-27-2012
20100203429VOLUME PHASE HOLOGRAM RECORDING MATERIAL AND OPTICAL INFORMATION RECORDING MEDIUM USING THE SAME - Disclosed are a volume phase hologram recording material having high sensitivity, high contrast, and excellent multiple recording and record holding properties and a volume phase hologram recording medium using the same. The volume phase hologram recording material comprises mainly a polymer matrix (a), a radically photopolymerizable compound (b), and a radical photopolymerization initiator (c) and the polymer matrix is a three-dimensionally crosslinked or linear polymer matrix formed from a polymer matrix-forming material containing 0.5-50 wt % of an episulfide compound (f), an epoxy compound (g), and a curing agent (h).08-12-2010
20120288785HOLOGRAPHIC SENSOR - A sensor device comprising a holographic element comprises a grating or hologram recorded in a holographic recording medium wherein at least one physical and/or chemical and/or optical characteristic of the holographic element or the image produced by it varies as a result of variation in relative humidity or moisture content in the air surrounding the element. Also provided is an acrylamide-based photopolymer and an acrylamide-based reflection hologram.11-15-2012
20120135338HOLOGRAPHIC RECORDING MEDIUM WITH CONTROL OF PHOTOPOLYMERIZATION AND DARK REACTIONS - The present invention relates to a system, as well as articles and holographic recording medium comprising the system, where the system comprises: a polymerizable component comprising at least one photoactive polymerizable material; and a photoinitiator component comprising at least one photoinitiator for causing the polymerizable component to polymerize to thereby form a plurality of holographic gratings when activated by exposure to a photoinitiating light source; wherein when a portion of the polymerizable component has been polymerized to form at least one holographic grating, the unpolymerized portion of the polymerizable component is resistant to further polymerization when not exposed to the photoinitiating light source. The present invention also provides methods for forming at least one holographic grating in a holographic recording medium having such a photopolymerizable system.05-31-2012
20100167178Oxime sulfonates and the use thereof as latent acids - Compounds of the formula (I), (II) or (III), wherein R07-01-2010
20110159409DECORATED DEVICE AND METHOD OF FABRICATING THE SAME - A decorated device including a body, a hologram layer, and an adhesion layer and a method of fabricating the same are provided. The hologram layer is disposed on the body and includes a transparent base layer having an uneven structure and a reflective layer substantially conformable covering the uneven structure to form a plurality of holographic patterns, wherein the reflective layer is located between the adhesion layer and the transparent base layer. The adhesion layer is disposed between a surface of the body and the hologram layer.06-30-2011
20080254374HOLOGRAPHIC RECORDING COMPOSITION AND HOLOGRAPHIC RECORDING MEDIUM - The present invention provides a holographic recording composition and a holographic recording medium comprising a recording layer formed with the holographic recording composition. The holographic recording composition comprises a bifunctional or greater isocyanate, a polyfunctional alcohol comprising a bifunctional alcohol and a trifunctional or greater alcohol, a titanocene-based radical polymerization initiator, a bifunctional or greater acrylate monomer, and an amidine salt denoted by General Formula (1).10-16-2008
20080254371Method For Producing an Image on a Material Sensitive to a Used Radiation, Method For Obtaining a Binary Hologram (Variants) and Methods For Producing an Image by Using Said Hologram - The aim of said invention is to principally simplify a production process for producing high-resolution images on a material sensitive to a used radiation and to substantially increase a resolution while forming the obtainable image. The inventive method consists in producing images on the sensitive material in the form of a plurality of summarised areas overlapping flashing exposure spots, wherein the irradiation dose is equal to or greater than a threshold value, in displacing, during exposing, radiator matrixes and/or the sensitive material in a direction parallel to sensitive material surface at a distance which is equal to or less than the maximum size (d) of the exposure spots by discretely modifying the size of the overlapping area, wherein said discrete is defined by a displacement path ranging from 0.01 to d. The method for producing binary holograms consists in placing the sensitive material on the surface of an opaque film, in producing an image thereon by means of said method, in photolithographically forming a plurality of transmission regions in the film, in forming a holographic image on the sensitive material surface with the aid of the binary hologram, in arranging the hologram in such a way that it is possible to perform a step-by-step displacement in a direction perpendicular to the sensitive material at a path ranging from 0.01 nm to Δs, wherein Δs is a variation value of a distance between the material and the binary hologram at which the resolution of the image formed thereby is reduced by 20%.10-16-2008
20080248402PHOTOSENSITIVE COMPOSITION FOR VOLUME HOLOGRAM RECORDING AND PHOTOSENSITIVE MEDIUM FOR VOLUME HOLOGRAM RECORDING - A photosensitive composition and A photosensitive medium for volume hologram recording comprises a photopolymerization reactive compound (a monomer) and any one of the following binder: (a) an organic-inorganic hybrid polymer obtainable by copolymerizing an organometallic compound of the formula 1 “R10-09-2008
20080248401Transferring Method for Transferring Hologram or Diffraction Grating Laminated in a Thermal Transfer Sheet and a Transfer Object - A transferring method for transferring a hologram with stable quality including on-demand information by using a thermal transfer sheet where the hologram is laminated. The transferring method transfers a thermal transfer sheet in which a hologram or a diffraction grating is laminated on a base material film, wherein a direction of heating sequentially by a heat source of a minute area unit and a direction of recorded information for enhancing optical effects of the hologram or the diffraction grating coincide with each other.10-09-2008
20090202919Apparatus and methods for threshold control of photopolymerization for holographic data storage using at least two wavelengths - A polymerizable media, including holographic recording media, and methods of use of the same. The media comprises at least one monomer or oligomer which undergoes polymerization to form a polymer; a compound, which absorbs actinic radiation of a first wavelength and forms a sensitizer which absorbs actinic radiation of a second wavelength; and an initiator, which, in combination with the sensitizer, initiates polymerization of the at least one monomer or oligomer when said sensitizer is exposed to actinic radiation of the second wavelength.08-13-2009
20080220339Film Forming Photosensitive Materials for the Light Induced Generation of Optical Anisotrophy - This invention relates to a self supporting or substrate-supported film or layer of a photosensitive material comprising a water insoluble complex having one of the following sum formulae (I) to (IV) n [R—P—R′]09-11-2008
20120251927HOLOGRAM-RECORDING MEDIUM - A hologram-recording medium containing: a recording layer containing a polymerizable monomer containing a structural framework represented by the following general formula (1).10-04-2012
20130130156METHODS OF FABRICATING OPTICAL ELEMENTS ON SUBSTRATES AND RELATED DEVICES - In a method of fabricating an optical element, an alignment surface is photolithographically patterned using a birefringent mask having a holographic pattern therein to create an alignment condition in the alignment surface based on the holographic pattern. A layer is formed on the alignment surface such that local optical axes of the layer are oriented according to the alignment condition in the alignment surface. For example, the layer may be a liquid crystal layer having respective molecular axes aligned according to the alignment condition. Related fabrication methods and polarization gratings are also discussed.05-23-2013
20090170009HOLOGRAPHIC RECORDING COMPOSITION AND HOLOGRAPHIC RECORDING MEDIUM - The present invention provides a holographic recording composition comprising a compound denoted by general formula (I) and a holographic recording medium comprising a recording layer, wherein the recording layer comprises a compound denoted by general formula (I).07-02-2009
20110212387Volume Hologram Comprising Expansion Agent Layer or Contraction Agent Layer for Creating Color Patterns - The invention concerns a security element in the form of a multi-layer film body having a volume hologram layer with two different items of optical information and a process for the production of such a security element.09-01-2011
20080199782Hologram recording material, hologram recording medium and hologram recording method - A hologram recording material contains a molecule having intrinsic birefringence and a photoresponsive macromolecule represented by the following formula (1).08-21-2008
20110236804Composition 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 composition is produced from a polymer and a light- and/or temperature-sensitive metal complex and the light- and/or temperature-sensitive metal complex is decomposed upon changing the local refractivity. The result is the formation of a refractivity gradient.09-29-2011
20090068569Resin composition for hologram recording material, hologram recording material, and method for producing hologram recording medium - The sensitivity, diffraction efficiency, etc. of hologram recording materials is improved. Disclosed is a resin composition for a hologram recording material, the resin composition comprising: a photosensitive component comprising (a) a monomer having a vinyloxy group, (b) a compound having a (meth)acryloxy group, and (c) a photopolymerization initiator; and a prepolymer component, wherein the component (a) is designed so as to be relatively higher or lower in refractive index than the prepolymer component.03-12-2009
20100291474COMPOSITIONS 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 marking purposes, particularly for providing a mark that is invisible to the unaided human eye but that can be detected as a fluorescence signal when exposed to a suitable wavelength of actinic radiation.11-18-2010
20130183608HOLOGRAPHIC RECORDING MEDIUM AND METHOD OF MAKING HOLOGRAPHIC RECORDING MEDIUM - Articles for recording a hologram are described. The articles include a holographic recording medium having a transparent polymeric binder and a photoreactive dye dispersed therein. The articles also include a first compound, dispersed in the holographic recording medium or disposed over a first surface of the holographic recording medium from which surface the hologram is viewed, that is transparent to light in the wavelength range to which the photoreactive dye is sensitive and which is capable of being converted to a converted compound that is opaque to light in the wavelength range to which the photoreactive dye is sensitive and transparent to light in a different wavelength range for viewing the hologram.07-18-2013

Patent applications in class Composition or product or process of making the same