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| Number | Title | Issue Date |
| 8187771 | 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 multi-layer body is directly or with the interposition of a transparent... | 05/29/2012 |
| 8173329 | Molded product and method for manufacturing same A molded product having a phase separation structure formed by photopolymerization of a photopolymerizable composition and imparting a sharp diffraction spot at a high diffraction efficiency, and a method for manufacturing same are provided. The molded product (1... | 05/08/2012 |
| 8163443 | Photosensitive 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 ph... | 04/24/2012 |
| 8021800 | Hologram 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... | 09/20/2011 |
| 7998639 | Holographic sensor The invention relates to a sensor comprising a medium and, disposed therein, a hologram, wherein an optical characteristic of the medium changes as a result of a variation in a physical property of the medium, wherein the fringes of the hologram are formed by silver... | 08/16/2011 |
| 7932000 | Hologram recording medium The present invention provides a hologram recording medium which can attain high refractive index change, flexibility, high sensitivity, low scattering, environment resistance, durability, low dimension change (low shrinkage) and high multiplicity in holographic mem... | 04/26/2011 |
| 7923174 | Holographic 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... | 04/12/2011 |
| 7879509 | Radiation-crosslinking and thermally crosslinking PU systems based on isocyanate-reactive block copolymers 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) isocyanate-react... | 02/01/2011 |
| 7625674 | Switchable holographic gratings The present invention includes systems and compositions of holographic grating structures devices and methods for fabricating such holographic grating structures. The method comprises the steps of preparing a composite mixture comprising a polymerizable matrix, a li... | 12/01/2009 |
| 7439009 | Three-dimensional optical data storage in fluorescent dye-doped photopolymer A host matrix—normally a binder such as cellulose acetate propionate in a solvent such as acetone—contains a radiation-polymerizable photopolymer—normally a monomer like dipentaerythritol pentaacrylate in combination with a crosslinker like 1-vinyl-2-pyrrolidi... | 10/21/2008 |
| 7429437 | Diffractive optical element and method of manufacture A diffractive optical element such as a diffuser, diffraction grating, and/or hologram, can be manufactured by using a surface relief pattern on a surface of a surface relief tool. A layer of curable material is physically contacted with the surface relief pattern o... | 09/30/2008 |
| 7424185 | Stretching and compression of laser pulses by means of high efficiency volume diffractive gratings with variable periods in photo-thermo-refractive glass High efficiency reflective volume Bragg gratings with chirped gratings recorded in photo-thermo-refractive glass having an absolute diffraction efficiency exceeding 95% in transmitting and reflecting modes are used to stretch and/or compress ultrashort laser pulses ... | 09/09/2008 |
| 7416818 | Switchable volume hologram materials and devices A new photopolymerizable material allows single-step, fast recording of volume holograms with properties that can be electrically controlled. Polymer-dispersed liquid crystals (PDLCs) in accordance with the invention preferably comprise a homogeneous mixture of a ne... | 08/26/2008 |
| 7414240 | Particle remover, exposure apparatus having the same, and device manufacturing method A particle remover includes an irradiation unit for irradiating plural lights onto a target from different directions, and for scanning the lights on the target, and a collector for collecting particles carried as a result of scanning of the lights. ... | 08/19/2008 |
| 7413830 | Lithograph with one-dimensional trigger mask and method of producing digital holograms in a storage medium The present invention relates to a method of producing digital holograms in a storage medium, in which the technical problem of writing computer-generated holograms by means of optical lithography as quickly as possible and with little effort with simultaneous accur... | 08/19/2008 |
| 7413678 | Electrically switchable polymer-dispersed liquid crystal materials A new photopolymerizable material allows single-step, fast recording of volume holograms with properties that can be electrically controlled. Polymer-dispersed liquid crystals (PDLCs) in accordance with the invention preferably comprise a homogeneous mixture of a ne... | 08/19/2008 |
| 7384709 | Lithograph with a trigger mask and method of producing digital holograms in a storage medium A lithograph for producing digital holograms in a storage medium includes a light source for producing a write beam, the light source having drive means for the two-dimensional movement of the write beam relative to the storage medium and having a first objective fo... | 06/10/2008 |
| 7384724 | Method for fabricating optical devices in photonic crystal structures A method for manufacturing optical components in a three-dimensional photonic crystal lattice. A first resist (9) is coated on a substrate (10) and exposed to an e-beam (11), to produce an imaged area (12). Another resist coating is appli... | 06/10/2008 |
| 7378219 | Optical information carrier comprising immobilized proteorhodopsin The present invention relates to materials comprising hydrophilic polymers and immobilized proteorhodopsin and the use of such materials as an optical information carrier. The material comprises one or more hydrophilic polymers that are capable to form a homogeneous... | 05/27/2008 |
| 7362523 | Method for producing holographic recording medium A method for producing a holographic recording medium having a holographic recording layer between a first substrate and a second substrate including the steps of: providing a holographic recording layer forming composition onto the first substrate, forming the holo... | 04/22/2008 |
| 7361432 | Composition for hologram-recording material, hologram-recording medium, and process for producing the same An object of the present invention is to provide a hologram recording material composition comprising a radical polymerizable compound being solid at an ordinary temperature and having a 9,9-diarylflourene skeleton, a polymeric binder and a plasticizer, the composit... | 04/22/2008 |
| 7354692 | Photoresists for visible light imaging A class of lithographic photoresist combinations is disclosed which is suitable for use with visible light and does not require a post-exposure bake step. The disclosed photoresists are preferably chemical amplification photoresists and contain a photosensitizer hav... | 04/08/2008 |
| 7349158 | Diffraction grating-based encoded micro-particles for multiplexed experiments Microparticles 8 includes an optical substrate 10 having at least one diffraction grating 12 disposed therein. The grating 12 having a plurality of colocated pitches Λ which represent a unique identification digital code that is detected... | 03/25/2008 |
| 7332249 | Holographic storage medium comprising polyfunctional epoxy monomers capable of undergoing cationic polymerization Disclosed is a holographic recording medium. The novel holographic recording mediums disclosed herein comprises: a) at least one polyfunctional epoxide monomer or oligomer which undergoes acid initiated cationic polymerization. Each epoxide in the monomer or oligome... | 02/19/2008 |
| 7326500 | Sensitization of photo-thermo-refractive glass to visible radiation by two-step illumination Photo-thermo-refractive (PTR) glass is a multi-component silicate glass having photosensitivity in rear UV region. A novel process is disclosed for PTR glass sensitization to visible region by means of two-step illumination followed by thermal development. This disc... | 02/05/2008 |
| 7324248 | Holographic printer A method and apparatus for producing holograms may use a computer generated 3-D model or data generated using multiple 2-D camera images taken of a real 3-D object or scene. The data is digitally processed and displayed on a high resolution spatial light modulator (... | 01/29/2008 |
| 7323275 | Photosensitive 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 organome... | 01/29/2008 |
| 7317814 | Authentication system and method An authentication system using a correlator that correlates an input with a reference wherein at least one of the input and reference comprises a phase volume mask having structures, preferably points, that are each less than about six microns in size and can have a... | 01/08/2008 |
| 7315068 | Interface layer for the fabrication of electronic devices The present invention is directed to methods for making electronic devices with a thin anisotropic conducting layer interface layer formed between a substrate and an active device layer that is preferably patterned conductive layer. The interface layer preferably pr... | 01/01/2008 |
| 7312021 | Holographic 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 hologr... | 12/25/2007 |
| 7312906 | Switchable polymer-dispersed liquid crystal optical elements Transmission and reflection type holograms may be formed utilizing a novel polymer-dispersed liquid crystal (PDLC) material and its unique switching characteristics to form optical elements. Applications for these switchable holograms include communications switches... | 12/25/2007 |
| 7297751 | Photocontrolled photochromic electroluminescent and electroconductive polymers for photonics The invention relates to photochromic monomers based on benzothiophenes and a method for preparing them, and to photochromic polymers-polyazomethines that are reversibly photocontrollable due to the introduction of photochromic fragments from the class of dihetaryle... | 11/20/2007 |
| 7297448 | Data 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 inter... | 11/20/2007 |
| 7297449 | Optical recording medium and optical recording apparatus There is provided an optical recording medium comprising a recording layer containing a charge-generating material capable of generating a first electric charge and a second electric charge by beam irradiation, the second electric charge having a different polarity ... | 11/20/2007 |
| 7288495 | Photorefractive glass and optical elements made therefrom The present invention provides an alkali alumino-silicate Na—F-containing glass material and a method of making the alkali alumino-silicate Na—F-containing glass material, with the glass material capable of being made photosensitive and thus formed into optical ... | 10/30/2007 |
| 7289693 | System and method for producing optical circuits A method of fabricating a plurality of composite optical assemblies is disclosed. Each optical assembly includes a first optical element and a second optical element. The method includes the steps of providing a first composite substrate that may be divided into a p... | 10/30/2007 |
| 7286764 | Reconfigurable modulator-based optical add-and-drop multiplexer An optical add and drop multiplexer system comprising a first module for providing a first signal; a second module for providing a second signal; and a modulator for receiving a channel of the first signal at a first location, the first location configured to actuat... | 10/23/2007 |
| 7282322 | Long-term high temperature and humidity stable holographic optical data storage media compositions with exceptional high dynamic range A novel photoimageable system for a two-chemistry system containing liquid photoreactive asymmetric acrylate compound containing sulfur, aromatic moieties, and optionally bromine, and an aluminum salt compound is disclosed. The photoimageable system has high dynamic... | 10/16/2007 |
| 7273683 | Fiber optic devices having volume bragg grating elements Fiber optic devices including volume Bragg grating (VBG) elements are disclosed. A fiber optic device may include one or more optical inputs, one or more VBG elements, and one or more optical receivers. Methods for manufacturing VBG elements and for controlling filt... | 09/25/2007 |
| 7270916 | Recording medium Disclosed is a recording medium comprising a recording layer including a photo-acid generating agent that generates an acid upon irradiation with an actinic radiation and a polymer having a polymerizable substituent group bonded to a main chain of the polymer via a ... | 09/18/2007 |
