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7618750 |
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...
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7601465 |
Holographic recording medium
A holographic recording medium has a recording layer including a radical-polymerizable compound, a first photo-radical polymerization initiator (A) containing a titanocene compound, and a second...
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7588863 |
Hologram recording method and hologram recording material
To provide a hologram recording method capable of satisfying high sensitivity and at the same time, satisfying high diffraction efficiency, good preservability, low shrinkage percentage, dry...
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7582392 |
Hologram-recording material, hologram-recording medium, and hologram-recording method
A hologram-recording material, including a photoresponsive molecule, a reactive molecule having an intrinsic birefringence, and a photopolymerization initiator that accelerates polymerization...
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7582391 |
Two-photon absorption decolorizable material, two-photon absorption refractive index modulation material, two-photon absorption polymerization material, two-photon absorption polymerization method and three-dimensional optical recording material
A two-photon absorption decolorizable material comprising: a two-photon absorption dye executing a two-photon absorption; and a decolorizable dye having a molar absorption coefficient equal to or...
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7582390 |
Two-photon absorbing polymerization method, two-photon absorbing optical recording material and two-photon absorbing optical recording method
(1) A two-photon absorbing polymerization method comprising a first step of irradiating light absorbable by two-photon absorption to form a latent image and a second step of exciting the latent...
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7579119 |
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...
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7572555 |
Hologram recording material, hologram recording method and optical recording medium
A hologram recording material is provided and includes at least a sensitizing dye capable of absorbing light having a hologram recording wavelength to generate an excited state thereof, and an...
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7563545 |
Hologram transfer sheet and intermediate transfer recording medium
It is an object of the invention is to provide a hologram transfer sheet comprising: at least, a peelable layer; a relief formation layer having a relief; and a metal thin layer, which are...
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7550234 |
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...
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7542186 |
3-D holographic recording method and 3-D holographic recording system
A method of 3D holographic recording by using a very simple optical system includes dividing a femto-second laser pulse into a plurality of light beams by a diffraction beam splitter, focusing four...
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7542185 |
Holographic recording medium, holographic record erasing method, and holographic recording and reproducing apparatus
A holographic record erasing method and a holographic recording and reproducing apparatus in which data reproduction can be disabled without irradiating a holographic recording medium with a high...
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7524590 |
Methods for storing holographic data and articles having enhanced data storage lifetime derived therefrom
The present invention provides a method for storing holographic data comprising providing an optically transparent substrate comprising a photochemically active dye and a photo-acid generator;...
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7524589 |
Holographic recording medium and recording method
The present invention provides a holographic recording medium comprising: an optical recording layer, which optical recording layer includes one of a polymer compound having photoisomerizable...
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7522323 |
Method and apparatus for printing a pattern with improved focus correction and higher throughput
A method for printing a pattern from a hologram mask into a photosensitive layer on a substrate, which method includes arranging the hologram mask on a coupling element, arranging the substrate so...
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7521155 |
Volume hologram layer and volume hologram transfer foil
It is a main object of the present invention to provide a volume hologram layer with good foil cutting property which is used for a volume hologram transfer foil and the like. The present invention...
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7521154 |
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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7520216 |
Method for manufacturing laser hologram paper
A method for manufacturing water-based laser hologram papers has acts of entirely or partially coating water-based varnish on a printed paper substrate, subjecting the paper substrate to a mirror...
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7511247 |
Method of controlling hole shape during ultrafast laser machining by manipulating beam polarization
A method for controlling the shape of the area machined by a pulse of laser light on a surface, such that the shape has a desired elliptical shape with its major axis aligned in a desired direction...
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7507504 |
Optical storage system
The present invention includes an optical system to control and optimize molecular reorientation for information storage. A preferred embodiment of the invention utilizes light sources emitting at...
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7502151 |
Holographic recording and reconstructing apparatus and method
A holographic recording and reconstructing apparatus includes a light source having a variable oscillation wavelength; a temperature sensing unit operable to sense temperature; and a control unit...
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7501210 |
Photo-responsive high-molecular compound, photo-responsive high-molecular composition, dicarboxylic acid monomer, polyester, optical recording medium and optical record reproducing device
In the present invention, a photosensitive layer of an optical recording medium includes a photo-responsive high-molecular compound comprising a photo-responsive group (e.g., an azobenzene...
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7498103 |
Holographic recording medium and method of manufacturing the same
Disclosed is a holographic recording medium and methods of manufacturing the holographic recording medium. The example of the medium has a recording layer containing a three dimensionally...
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7497970 |
Chiral agent for liquid crystal, liquid crystal composition and polymer, as well as filter for optical recording medium, optical recording medium and color filter liquid for crystal
The chiral agent used for liquid crystal according to the present invention comprises a phosphoric acid amide represented by General Formula (1) below:
in General Formula (1), the binaphthyl...
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7494747 |
Holographic recording medium
Disclosed is a holographic optical recording medium, comprising a recording layer containing a three dimensionally cross-linked polymer matrix, a radically polymerizable compound, and a photo...
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7491472 |
Volume hologram transfer foil
The main object is to provide a volume hologram transfer foil showing an excellent foil cutting property and capable of being transferred easily to a transferred body. This object is solved by...
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7490548 |
Method for manufacturing water-based laser hologram paper
A method for manufacturing water-based laser hologram papers has acts of entirely or partially coating water-based varnish on a printed paper substrate, subjecting the paper substrate to a mirror...
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7479354 |
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...
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7459241 |
Rotary apertured interferometric lithography (RAIL)
A rotary apertured interferometric lithography (RAIL) system that includes interferometric lithography tools, a mask with a slit preferably with an arc shape, and a rotating stage is disclosed. The...
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7445873 |
Lithograph with beam guidance and method of producing digital holograms in a storage medium
Producing a digital hologram-in a storage medium includes: (i) focusing a write beam onto the storage medium; (ii) moving the write beam two-dimensionally relative to the storage medium; (iii)...
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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...
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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...
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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...
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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...
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7385740 |
Hologram recording medium
There is provided a hologram recording medium having: a recording layer at which a hologram can be recorded by illumination of writing light; and a protective layer provided on the recording layer...
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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...
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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...
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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...
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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...
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7319551 |
Maskless optical interferometric lithography
An optical device generated by interferometric lithography, in the form of a surface relief pattern that diffracts light, to be used mainly in optical security, produced by optical systems...
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7304775 |
Actively stabilized, single input beam, interference lithography system and method
An interference lithography system is described that is capable of exposing high resolution patterns in photosensitive media and employing yield increasing active stabilization techniques needed in...
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7304774 |
Holographic recording medium
A holographic recording medium 10 includes: a recording layer 12 ; two substrates 14 and 16 sandwiching the same; and a photosensitive protective layer 18 covering these recording layer ...
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7298532 |
Single beam write and/or replay of spatial heterodyne holograms
A method of writing a spatially heterodyne hologram having spatially heterodyne fringes includes: passing a single write beam through a spatial light modulator that digitally modulates said single...
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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...
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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...
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7286293 |
Method of fabricating diffractive optical element
A diffractive optical element is fabricated to have a first element and a second element of different materials bonded to each other with a diffraction grating formed between the elements. In...
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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...
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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...
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7271940 |
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...
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7268927 |
Tunable optical filter array and method of use
According to an exemplary embodiment of the present invention, an optical apparatus includes an optical filter array which comprises a plurality of optical filter elements, wherein at least one of...
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