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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...
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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...
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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...
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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...
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8144379 |
Recording and reproducing device and polarization direction controlling method
Disclosed herein is a recording and reproducing device including: a light source; an intensity modulating section; a polarization beam splitter; a selective polarization direction controlling...
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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...
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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...
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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...
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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...
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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,...
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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...
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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...
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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...
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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,...
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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...
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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,...
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8009339 |
Holographic recording medium, holographic writing system and holographic reading system
A holographic recording medium including a recording layer on a substrate, which records data information in a light interference pattern. In the holographic recording medium, information on a...
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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...
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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...
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7990593 |
Holographic storage material
The invention relates to holographic storage material (1) comprising at least one polymer film (3) and one metallic first layer (4) which is applied to the polymer film (3). In order to provide a...
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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,...
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7973989 |
System and method using a voltage kick-off to record a hologram on a photorefractive polymer for 3D holographic display and other applications
An updateable system and method of recording a hologram on a media simultaneously reduces the writing time and increases persistence without sacrificing diffraction efficiency. A voltage kick-off...
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7955785 |
Method for forming fine concavo-convex patterns, method for producing optical diffraction structure, and method for copying optical diffraction structure
A method for forming fine concavo-convex patterns by using a relief formation material 3 having a relief formation layer 2 composed of a resin having thermoplasticity and a relief pattern sheet 6...
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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,...
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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...
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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...
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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...
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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...
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7920309 |
Holographic recording medium, holographic writing system and holographic reading system
A holographic recording medium including a recording layer on a substrate, which records data information in a light interference pattern is provided. In the holographic recording medium,...
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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...
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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...
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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...
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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...
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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...
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7872787 |
Holographic multiplex recording method, holographic recording apparatus and holographic recording medium employing the method using interference fringes
A holographic multiplex recording method which can keep a recording data rate constant and equalize nonuniformity in recording due to vibrations or the like, and a holographic recording apparatus...
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7852537 |
Optical recording medium and method of manufacturing the same
An optical recording medium includes a first substrate having a groove on the side of an outer peripheral portion thereof; a second substrate in contact with the first substrate in the outer...
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7847991 |
Holographic storage medium
Holographic storage medium which avoids the interference between a reference beam and a reconstructed object beam, wherein the holographic storage medium has a holographic storage layer on top of a...
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7848204 |
Holographic storage and regeneration system having servo mechanism
A holographic storage and regeneration system includes a holographic recording medium, a light source, a spatial light modulator, and a conjugate servo light guidance portion. The light source...
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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...
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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):...
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7820263 |
Volume hologram laminate
The present invention relates to a volume hologram laminate with low generation of spotty hologram flaws in the volume hologram layer even when kept under pressurized conditions during storage, and...
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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...
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7813016 |
Method of nonlinear harmonic holography
A harmonic holography (H2) technique and system that combines holography and nonlinear optics that enables holographic recording of 3D images with femtosecond framing time are provided. The H2...
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7800802 |
Hologram recording medium and method for manufacturing same
A hologram recording medium including a substrate, a hologram recording layer that records an interference pattern formed by a first wavelength beam, a wavelength selecting reflection layer...
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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)...
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7790361 |
Methods of producing diffractive structures in security documents
Various methods of producing a security document or article including a diffractive optical microstructure are disclosed. One method includes applying an opacifying layer (102) to at least one...
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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...
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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...
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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...
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7755818 |
High-integrity seal for optical elements, dichromated gelatin holographic optical elements in particular
A method and apparatus for encapsulating optical elements, particularly dichromated gelatin (DGC) holographic optical elements (HOEs), exhibits a very high degree of environmental integrity. In...
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