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"Transmission of documents via telephone wires is possible in principle, but the apparatus required is so expensive that it will never become a practical proposition."
Dennis Gabor, British physicist
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| Number | Title | Issue Date |
| 8187770 | High performance, crosslinked polymeric material for holographic data storage An optical recording material and methods of making such material is provided. The material comprises of a dewar benzene monomer, with at least two cross-linkable groups, a sensitizer, a cross-linker, and an initiator. The material does not require a binder or a co-... | 05/29/2012 |
| 8182967 | Optical data storage media and methods for using the same There are provided optical data storage media and methods of optical data storage using the same. The optical data storage media comprises a non-linear sensitizer capable of absorbing actinic radiation to cause upper triplet energy transfer to a reactant that underg... | 05/22/2012 |
| 8182966 | Data storage devices and methods A data storage device including: a plastic substrate having a plurality of volumes arranged in tracks along a plurality of vertically stacked, laterally extending layers therein; and, a plurality of micro-holograms each contained in a corresponding one of the volume... | 05/22/2012 |
| 8178261 | Optical 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 acti... | 05/15/2012 |
| 8133639 | Holographic 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 co... | 03/13/2012 |
| 8133638 | All-polymer grating microstructure An all-polymer grating microstructure device that exhibits a zero-order reflection under white light comprises a first polymer having a first refractive index and configured as a microstructure embedded within a second polymer having a second refractive index, each ... | 03/13/2012 |
| 8124299 | Methods for using 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 tripl... | 02/28/2012 |
| 8084168 | Holographic storage devices with complementary data layer and use thereof A data storage device including: a plastic substrate having a plurality of data volumes arranged along tracks in a plurality of stacked layers; a plurality of micro-holograms each contained in a corresponding one of the data volumes; a plurality of complementary vol... | 12/27/2011 |
| 8080348 | Hologram 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 ... | 12/20/2011 |
| 8071260 | Thermoplastic holographic media The present invention provides an article comprising: a binder component, a polymerizable component; and a photoinitiator component comprising at least one photoinitiator that causes the polymerizable component to form a polymer or co-polymer when a portion of the p... | 12/06/2011 |
| 8062809 | Holographic 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.... | 11/22/2011 |
| 8053145 | Method for manufacturing holographic recording medium and method for manufacturing semiconductor device To provide a method for manufacturing a holographic recording medium and a method for manufacturing a semiconductor device, by which effects of distortion or irregularities of the surface of an exposure object can be reduced. The method includes the steps of: splitt... | 11/08/2011 |
| 8053147 | Advantageous recording media for holographic applications High performance media suitable for recording with a blue laser is disclosed. The blue-sensitized holographic media provides greater dynamic range and higher sensitivity than previously disclosed blue-sensitized holographic media. These media can be used for diverse... | 11/08/2011 |
| 8053146 | Multi-layer body including a diffractive relief structure and method for producing the same There are described a process for the production of a multi-layer body (100) having a partially shaped first layer (3m) and a multi-layer body produced in that way. It is provided that a diffractive first relief structure (4) is shaped in... | 11/08/2011 |
| 8034514 | Photosensitive 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 ... | 10/11/2011 |
| 8026022 | Long-length fiber Bragg creating sequential UV writing by probing phase mask A new fiber position monitoring method for sequential FBG UV-writing processes with a reference phase mask as the phase reference is proposed. Also, the new method by probing a reference phase mask can overcome the optical alignment difficulties in using reference f... | 09/27/2011 |
| 8026021 | Film forming material and preparation of surface relief and optically anisotropic structures by irradiating a film of the said material The present invention is directed to a film forming, photoactive, homogeneously mixed material comprising a complex prepared from (a) at least one ionic photosensitive compound which may undergo a photoreaction, selected from photoisomerizations, photocycloadditions... | 09/27/2011 |
| 8003280 | System and method for holographic lithographic production of a photonic crystal A system and method for holographic lithography is disclosed, including interferometeric alignment of laser sources. This includes creation of the volumetric holographic pattern around wire and other planar and non-planar substrates. This template is further process... | 08/23/2011 |
| 7993799 | Optical components made from photosensitive inorganic/organic hybrid materials An organic-inorganic hybrid material comprising (a) at least one soluble organic polymer, (b) at least one mono- or polynuclear metal complex having at least one ligand which comprises at least one photochemically and/or thermally polymerizable functional group and ... | 08/09/2011 |
| 7977015 | Polymerizable compound, optical recording composition, holographic recording medium and method of recording information The present invention provides a polymerizable compound denoted by general formula (1). In general formula (1), A denotes an oxygen atom, sulfur atom, or NR, R denotes a hydrogen atom, alkyl group, aryl group, or heterocyclic... | 07/12/2011 |
| 7939220 | Proton-translocating retinal protein The invention relates to proton-translocating retinal proteins which exhibit a photocycle which is retarded as compared with the wild type and whose all-trans retinal contents in the light-adapted and dark-adapted states do not differ from each other by more than 10... | 05/10/2011 |
| 7939221 | 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... | 05/10/2011 |
| 7923173 | Photo definable polyimide film used as an embossing surface An embossing surface and a method for creating that surface is provided by a polyimide material which has photodefinable characteristics. One benefit is that the embossing surfaces do not have to be made by data transfer from the photo-definable surface. The polyimi... | 04/12/2011 |
| 7901839 | Compositions 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 optica... | 03/08/2011 |
| 7897296 | Method for holographic storage Disclosed herein is a method of manufacturing a data storage media comprising mixing 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. ... | 03/01/2011 |
| 7892702 | Sensitizer 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 th... | 02/22/2011 |
| 7883821 | Process for producing titanium-containing metal oxide, hologram recording material, process for producing the same, and hologram recording medium The present invention provides a process for producing a titanium-containing metal oxide the coloration of which is decreased; a hologram recording material suitable for holographic memory recording using a blue laser, wherein a titanium-containing metal oxide the c... | 02/08/2011 |
| 7871741 | Method of producing diffractive structures in security documents A method of producing a security document or article including a substrate (100), which is transparent at least to visible light, and a diffractive optical microstructure (112). The method includes applying an opacifying layer (102) to at least ... | 01/18/2011 |
| 7846615 | Hologram 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). in formula (1), L1 representing a bivalent linking gr... | 12/07/2010 |
| 7824822 | Photosensitive compositions 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): R1—R3—(CF2)n-R4—R | 11/02/2010 |
| 7816059 | Hologram recording material, hologram recording medium and hologram recording method A hologram recording material is used for recording information by at least irradiation with light. The hologram recording material includes photoresponsive molecules, liquid crystal molecules, and particles having an average particle diameter of one tenth or less o... | 10/19/2010 |
| 7794896 | Methods for making holographic data storage articles A method of making a holographic data storage medium is provided. The method comprises: (a) providing an optically transparent substrate comprising at least one photochemically active dye; and (b) irradiating the optically transparent substrate at least one waveleng... | 09/14/2010 |
| 7781124 | Hologram 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 comp... | 08/24/2010 |
| 7767361 | Hologram recording material, process for producing the same and hologram recording medium The present invention provides a hologram recording material which attains high refractive index change, high sensitivity, low scattering, environment resistance, durability, low dimensional change and high multiplicity, and is suitable for volume hologram recording... | 08/03/2010 |
| 7767362 | Deposition of photosensitive media for digital hologram recording Hologram production devices can include holographic recording material deposition systems to deposit holographic recording material as needed by the hologram production device. Various nozzles, ink jets, and similar devices can be used to deposit one or more compone... | 08/03/2010 |
| 7759020 | Multi-color holographic optical traps A method and system for providing multi-color holographic optical traps and patterns. The method and system employs a laser beam which interacts with a diffractive optical element with a hologram and for optics which acts to selectively pass or attenuate different l... | 07/20/2010 |
| 7745065 | Volume hologram transfer foil, and volume hologram multilayer structure The invention provides (1) a volume hologram transfer foil comprising a substrate and protective layer, a volume hologram layer and a heat seal layer stacked on the substrate in this order, wherein a multilayer structure comprising the protective layer, the volume h... | 06/29/2010 |
| 7745066 | Method for preparing solid materials 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... | 06/29/2010 |
| 7736818 | Holographic recording medium and method of making it A laminated holographic recording medium having (a) a first substrate having a through-hole and (b) a solid polymer matrix layer that records holographic data laminated to the first substrate and a method of manufacturing thereof are disclosed. The method of manufac... | 06/15/2010 |
| 7727680 | Hologram recording sheet, holographic optical element using said sheet, and its production process The hologram recording sheet according to the invention is made up of a base film and hologram sensitive materials sensitive to different wavelength regions formed therein in a desired pattern, or a film and at least two hologram recording sensitive materials sensit... | 06/01/2010 |
