Entries |
Document | Title | Date |
20080247009 | Optical Component Made of an Inorganic-Organic Hybrid Material for the Production of Refractive Index Gradient Layers with High Lateral Resolution and Method for the Production Thereof - An organic-inorganic hybrid material comprising (a) at least one soluble organic polymer and (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. Also disclosed is an optical component which is made by using the hybrid material. | 10-09-2008 |
20080247010 | Hologram Recording and Reproducing Apparatus and Hologram Recording Method - There is provided a hologram recording and reproducing apparatus for a hologram recording medium that stores optical interference fringes therein as a diffraction grating generated by coherent reference light and signal light. The hologram recording and reproducing apparatus includes a control circuit that is connected to a spatial light modulator and controls each pixel in such a way that the reference light is modulated according to information data to produce the signal light. The control circuit spatially classifies a plurality of pixels in the spatial light modulator into a central modulation area disposed on the optical axis and at least one annular modulation area sequentially disposed around the central modulation area in a concentric manner, and controls the pixels in the central modulation area and the pixels in the annular modulation area using respective different recording modulation methods to deliver the signal light through the central modulation area and the annular modulation area. | 10-09-2008 |
20080247011 | DATA STORAGE METHOD AND DEVICE - A method for storing data including: providing a first substrate having a plurality of micro-holograms therein, the micro-holograms being indicative of the data; providing a second hologram-supporting substrate; illuminating the plurality of micro-holograms in the first substrate through the second substrate, thereby producing a holographic pattern in the second substrate indicative of reflections of the plurality of micro-holograms in the first substrate; providing a third hologram-supporting substrate; and, illuminating the holographic pattern in the second substrate through the third substrate, thereby substantially replicating the plurality of micro-holograms in the first substrate in the third substrate. | 10-09-2008 |
20080259417 | Holographic Recording Media - This invention relates to improved holographic recording media and to related methods and apparatus for fabricating and reading holograms. | 10-23-2008 |
20080266623 | APPARATUS AND METHOD TO STORE INFORMATION IN MULTIPLE HOLOGRAPHIC DATA STORAGE MEDIA - A method is disclosed to store information in multiple holographic data storage media. The method supplies a first holographic data storage medium, defines an inner storage portion of that first holographic data storage medium, and defines an outer storage portion of that first holographic data storage medium. The method further supplies a second holographic data storage medium, defines an inner storage portion of that second holographic data storage medium and defines an outer storage portion of that second holographic data storage medium. The method provides information, encodes a hologram comprising that information into the outer storage portion of the first holographic data storage medium, and encodes the information in the inner storage portion of the second holographic data storage medium. | 10-30-2008 |
20080304120 | Hologram recording medium and manufacturing method therefor - A hologram recording medium includes a support substrate, a hologram recording material layer, a transparent gel layer, and a protective substrate. The transparent gel layer is formed of a resin material gelated by cross-linking, or more specifically, such as gelated silicone cross-linked by hydrosilylation or gelated polyurethane cross-linked by polyaddition of isocyanic ester to alcohol. The transparent gel layer serves as a filler to compensate for variations in thickness of the hologram recording material layer. The transparent gel layer fills those gaps occurring between the recording material layer of the hologram recording medium and the adjacent substrate, without having adverse effects on the recording characteristics, in a manner that allows for controlling the refractive index. | 12-11-2008 |
20080309996 | Surface Relief Volume Reflective Diffractive Structure - Disclosed is a surface relief structure. The structure includes a recording medium configured to be structurally modified when exposed to interfering and non-interfering portions of radiation beams, the structurally modified recording medium including, when viewed in a two-dimensional cross-section along one of the axes of the recording medium a plurality of equally spaced steps of fine-sized periodicity superimposed upon a plurality of deep depressions of substantially coarse-sized periodicity. The structurally modified recording medium is configured to produce in reflection single and multiple colors in a broad spectral range when illuminated by a source of light. | 12-18-2008 |
20080316555 | Hologram Recording Medium and Method for Manufacturing Same - Noise caused by scattering of an information beam and a recording and reproducing reference beam within an optical information recording medium is reduced and reliability of recording and reproduction is enhanced | 12-25-2008 |
20080316556 | VOLUME HOLOGRAM TRANSFER FOIL, VOLUME HOLOGRAM LAMINATE, AND PRODUCTION METHOD THEREOF - A major object of the present invention is to provide a volume hologram transfer foil that gives a volume hologram laminate higher in antiforgery function, | 12-25-2008 |
20090002786 | DIRECTORY HOLOGRAM FORMING AN ANCHOR LOCATION OF A PATTERN OF STORED HOLOGRAMS - A holographic storage drive and control of a holographic storage system are configured to write at least a group of holograms in a predetermined pattern in the holographic storage medium, and to write a directory hologram which relates to the holograms of the group to form an anchor location of the predetermined pattern. Further, a directory comprising the directory hologram stored in a memory, and the control is configured to initiate a read operation of at least one hologram of a group with an access for the directory hologram of the group at the anchor location; to read the accessed hologram, employing a matched filter to cross-correlate the read accessed hologram with an ideal version of the directory hologram derived from the directory stored in the memory; and to determine whether the read accessed hologram is the directory hologram of the group. | 01-01-2009 |
20090021811 | OPTICAL INFORMATION RECORDING APPARATUS - An optical information recording apparatus includes a light source that emits an irradiation light; a spatial light modulator that converts the irradiation light to an information light carrying information; a condenser lens that converges the information light and a reference light onto an optical information recording medium on which the information can be recorded as a hologram by an interference fringe formed by an interference between the information light and the reference light; a relay lens that propagates the information light emitted from the spatial light modulator to the condenser lens; and a permeable member, provided between the spatial light modulator and the relay lens, that has a refractive index greater than a refractive index of air and smaller than a refractive index of the relay lens, and refracts and transmits the information light. | 01-22-2009 |
20090051987 | Method and arrangement for producing a hologram - A method and arrangement for producing a hologram of an object uses light, having photon packets, to illuminate the object and to serve as a reference light. Each photon packet includes a plurality of photons correlated in a quantum-mechanical manner and jointly form a multi-photon Fock state. Some of the photon packets may be used for illuminating the object, and some may be used as a reference light. Photon packets arriving from the object may be made to interfere with the reference light in an interference field, and the brightness distribution in the interference field or a part thereof may be registered by a detector. A light source emitting a plurality of mutually coherent rays of photon packets may be used for generating the packets, some of the rays being used for illuminating the object, and some of the rays being used as a reference light or for forming same. | 02-26-2009 |
20090051988 | HOLOGRAPHIC RECORDING MEDIUM AND HOLOGRAPHIC RECORDING APPARATUS - A holographic recording medium includes at least two substrates, and a recording layer provided between the substrates. The recording layer has a property such that an average refractive index lowers as irradiation with a beam proceeds. In the recording layer, an optical compensation rate C that is defined by C=(1−(n | 02-26-2009 |
20090059327 | HOLOGRAPHIC STORAGE MATERIAL - The invention relates to holographic storage material ( | 03-05-2009 |
20090080042 | MONOCULAR HOLOGRAPHIC DATA STORAGE SYSTEM ARCHITECTURE - A monocular holographic storage device or system to provide for compact recording and/or reading of data pages in a holographic storage medium. Also provided are methods for carrying out such data storage and/or data recovery using a monocular holographic storage device or system. Further provided are articles comprising holographic storage media for recording or for reading recorded data using such devices or systems. | 03-26-2009 |
20090091810 | HOLOGRAM RECORDING MATERIAL AND HOLOGRAM RECORDING MEDIUM - The present invention provides a hologram recording material and a hologram recording medium, suitable for volume hologram recording, that are excellent in multiple recording characteristics and stability over time in holographic memory recording using a blue laser as well as a green laser. A hologram recording material comprising at least metal compound fine particles and a photopolymerizable compound, wherein the metal compound fine particles comprise organometallic fine particles which contain a metal atom, an organic group, and an oxygen atom, have a direct bond between the metal atom and a carbon atom in the organic group (a metal-carbon bond), and have a bond between the metal atoms through the oxygen atom (a metal-oxygen-metal bond); and the metal compound fine particles are not crosslinked with each other. A hologram recording medium ( | 04-09-2009 |
20090097085 | HOLOGRAM RECORDING MEDIUM - The present invention provides a hologram recording medium wherein high refractive index change, flexibility, low scattering, environment resistance, durability, low dimensional change (low shrinkage), and high multiplicity are attained in holographic memory recording using a blue laser as well as a green laser. A hologram recording medium comprising at least a hologram recording layer, wherein the hologram recording layer ( | 04-16-2009 |
20090141323 | HOLOGRAM RECORDING MEDIUM, HOLOGRAM RECORDING APPARATUS AND METHOD, AND COMPUTER PROGRAM - A hologram recording apparatus ( | 06-04-2009 |
20090153927 | HOLOGRAPHIC DATA STORAGE MEDIUM AND APPARATUS AND METHOD FOR RECORDING/REPRODUCING HOLOGRAPHIC DATA TO/FROM THE SAME - Provided are a holographic data storage medium and an apparatus and method for recording/reproducing holographic data using the same. The holographic data storage medium includes: a substrate; a holographic recording layer disposed on the substrate; and a cover layer covering the holographic recording layer. The holographic recording layer includes: a data recording region including a plurality of data layers to which data is recorded, the data recording region in which interference fringes due to first and second beams are formed in different data layers in a depthwise direction; and a layer discrimination region for providing discrimination between the data layers. | 06-18-2009 |
20090195847 | HOLOGRAPHIC RECORDING MEDIUM - A holographic recording medium is provided, which includes a recording layer containing a three-dimensional crosslinked polymer matrix, a photo-radical generating agent, and a ring-opening polymerizable compound having a radically ring-opening polymerizable alicyclic structure. | 08-06-2009 |
20090262404 | Holographic Recording Medium - In a hologram recording medium, a bleaching beam irradiated to fix recorded information is prevented from spreading and advancing into an unrecorded area. The hologram recording medium is provided with a hologram material layer for recording information to be recorded by irradiating a same area with an information beam which corresponds to the information to be recorded and a reference beam for reading out the recorded information. The hologram material layer is divided into a plurality of recording zones by a plurality of light blocking walls, and the light blocking walls are formed in the recording zone to which recording process has been performed, by using a material not passing through the bleaching beam irradiated for fixing the recorded information. | 10-22-2009 |
20090268267 | HOLOGRAM RECORDING CARRIER AND HOLOGRAM APPARATUS - A hologram recording carrier that information is recorded into or reproduced from by irradiating light, comprises a hologram recording layer to store an optical interference pattern by coherent reference light and signal light as a hologram therein; and a servo layer laid on top of the hologram recording layer in a film thickness direction, multiple marks being recorded beforehand on the servo layer. The multiple marks form lines as multiple mark rows extending in a direction parallel to a relative movement direction of a light spot of a hologram recording beam irradiated on the hologram recording carrier. | 10-29-2009 |
20090290202 | HOLOGRAM RECORDING MEDIUM AND HOLOGRAM RECORDING/REPRODUCTION DEVICE - A hologram recording medium has a substrate and a hologram recording layer into or from which information is recorded or reproduced by a hologram, and a concavo-convex pattern having a reflection layer that transmits hologram recording/reproducing light and reflects light having a longer wavelength than the hologram recording/reproducing light is formed inside the hologram recording medium. | 11-26-2009 |
20090310196 | VOLUME PHASE HOLOGRAM RECORDING MATERIAL AND OPTICAL INFORMATION RECORDING MEDIUM - Disclosed is a volume phase hologram recording material of high sensitivity, high contrast, and excellent record retention properties and also disclosed is a volume phase hologram recording medium using the said material. The volume phase hologram recording material mainly contains a three-dimensional crosslinked polymer matrix, a radically polymerizable monomer, and a photoradical polymerization initiator. The three-dimensional crosslinked polymer matrix is formed from a matrix-forming compound having two photoradically polymerizable unsaturated groups and two non-photoradically polymerizable hydroxyl groups represented by the following general formula (1) and another matrix-forming compound having no photoradically polymerizable group. | 12-17-2009 |
20100007932 | Optical recording medium and method for manufacturing the same - An optical recording medium has a recording layer formed of a plurality of reflection hologram layers. A spacer layer is interposed between the respective reflection hologram layers. The reflection hologram layer is made of a material having a thermal threshold value which allows, when being irradiated with a recording laser beam, local absorbed heat to vary hologram diffraction conditions at a focal position, and allows the hologram to be retained at non-focal positions. The spacer layer is made of a material which is insensitive to a laser beam of a recording wavelength and which has a smaller extinction coefficient than that of the reflection hologram layer. | 01-14-2010 |
20100014133 | METHOD TO MODIFY AND APPLY EDGE SEAL MATERIALS IN LAMINATED MEDIA - An article with a pair of substrates made from a thermoplastic and each having an outer edge; a holographic storage medium positioned between the substrates such that the holographic storage medium has an exposed outer edge area proximate the outer edges of the substrates; and an environmental barrier seal protecting the exposed outer edge area; wherein (1) the environmental barrier seal includes a temperature-responsive stress-relieving structure; or (2) the substrates, holographic storage medium, and environmental barrier seal have materials with compatible coefficients of thermal expansion. Also a process which forms a temperature-responsive stress-relieving structure in a portion of the environmental barrier seal for relieving such temperature induced stress. | 01-21-2010 |
20100020372 | HOLOGRAPHIC RECORDING MEDIUM AND OPTICAL INFORMATION RECORDING/REPRODUCING APPARATUS - A holographic recording medium is provided. The medium includes a recording layer. The recording layer includes a polymer matrix, a polymerizable monomer and a photopolymerization initiator. The polymerizable monomer includes a monomer being expressed in the following general formula (M1), (M2), or (M3). | 01-28-2010 |
20100020373 | HOLOGRAPHIC STORAGE MEDIUM AND METHOD FOR GATED DIFFUSION OF PHOTOACTIVE MONOMER - An optical medium is provided. The optical medium comprises: a diffusion-controlling matrix framework; at least one photoactive monomer attached to the diffusion-controlling matrix framework in a first state of the optical medium, wherein the at least one photoactive monomer is released from the diffusion-controlling matrix framework by photo cleavage, producing a second state of the optical medium, in which diffusion of the photoactive monomer through the optical medium is possible; and wherein the at least one photoactive monomer is then polymerized or reattached to the diffusion-controlling matrix, giving a third state of the optical medium, when exposed to photo-polymerizing light. | 01-28-2010 |
20100039684 | SENSITIZER DYES FOR PHOTOACID GENERATING SYSTEMS USING SHORT VISIBLE WAVELENGTHS - Photosensitizing dyes are often used in conjunction with a photoacid generator in photopolymerizable materials and in holographic recording media. Typical dyes for these materials are used in the region of the visible spectrum for wavelengths greater than about 450 run. The present invention discloses a number of new 1,4-alkynyl substituted napthalene photosensitizing dyes that have suitably low extinction coefficients coupled with good sensitizing properties for use in such materials at wavelengths in the visible spectrum region of about 400 nm. | 02-18-2010 |
20100039685 | VOLUME HOLOGRAM OPTICAL RECORDING MEDIUM, COMPOSITION FOR FORMING VOLUME HOLOGRAM RECORDING LAYER, VOLUME HOLOGRAM RECORDING MATERIAL, AND VOLUME HOLOGRAM OPTICAL RECORDING METHOD - Disclosed is a volume hologram optical recording medium having a recording layer with low moisture absorption. Specifically disclosed is a volume hologram optical recording medium having a multi-layer structure including a transparent substrate and a recording layer. The recording layer contains a resin matrix (A) and/or a resin matrix (B) and a photosensitive compound (C). The resin matrix (A) is obtained by reacting a polyisocyanate (A1) and a polyol (A2) having a —(C═O)O— group and/or a —O(C═O)O— group, while the resin matrix (B) is obtained by reacting an epoxy compound (B1) having two or more epoxy groups in one molecule and a curing agent (B2). In addition, the recording layer has a moisture absorption rate of 1.5 wt % or less. | 02-18-2010 |
20100053710 | APPARATUS FOR RECORDING/REPRODUCING HOLOGRAPHIC DATA AND METHOD OF ADJUSTING POSITION OF RECORDING LAYER - An apparatus for recording/reproducing holographic data and a method of adjusting a position of a recording layer. While an objective lens focusing first and second lights having different wavelengths on a holographic data storage medium including first and second reflective layers reciprocatingly moves in a direction of an optical axis, a focus movement unit, which moves a focus of the second light in the direction of the optical axis until a time difference between a first detection signal generated when the first light is reflected from the first reflective layer and a second detection signal generated when the second light is reflected from the second reflective layer becomes a value corresponding to a position of a desired recording layer, is controlled to move a focal position of the second light so that the focal position of the second light can be adjusted to the position of a desired recording layer. | 03-04-2010 |
20100067073 | VOLUME HOLOGRAM OPTICAL RECORDING MEDIUM, COMPOSITION FOR VOLUME HOLOGRAM RECORDING LAYER FORMATION, AND VOLUME HOLOGRAM RECORDING MATERIAL - This invention provides, for example, a highly stable and reliable volume hologram optical recording medium which can suppress an intensity variation, for example, in diffraction efficiency after signal recording and can stably develop a high S/N ratio. The volume hologram optical recording medium includes a recording layer containing at least one compound selected from compounds (A1) having a terpenoid structure, compounds (A2) represented by a formula (I), and cyclic or noncyclic compounds (A3) having at least two double bonds two of these double bonds are located at 1,4-position relatively, wherein R1 and R2 each independently represent an organic group having 1 to 20 carbon atoms, and R1 and R2 may combine to form a cyclic structure. | 03-18-2010 |
20100067074 | 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, information on a thermal expansion characteristic of a recording material contained in the recording layer and/or information on temperature dependency of the refractive index of the recording material are recorded within the holographic recording medium in advance. | 03-18-2010 |
20100097670 | Holographic storage system with improved beam overlap - An apparatus and a method for reading from and/or writing to holographic storage media using a coaxial arrangement of an object beam and one or more reference beams or a coaxial arrangement of a reconstructed object beam and one or more reference beams is proposed. A focus of the one or more reference beams within a holographic storage medium is shifted along the optical axis relative to a focus of the object beam or the reconstructed object beam. | 04-22-2010 |
20100128333 | HOLOGRAM RECORDING AND REPRODUCING SYSTEM - A hologram recording and reproducing system for recording information to or reproducing information from a recording medium which stores an optical interference pattern of a reference beam and a signal beam as a diffraction grating, the system comprising: a light source for generating a coherent beam; and a light generation section which is disposed on an optical axis, has a signal beam region and a reference beam region that are in a rotary inversion with respect to the optical axis in a cross-section of the coherent beam, and spatially splits the coherent beam into a signal beam and a reference beam which propagate in the signal beam region and the reference beam region respectively; a light interference section which is disposed on the optical axis, has a signal beam region and a reference beam region that are in a rotary inversion with respect to the optical axis, corresponding to the signal beam region and the reference beam region to transmit the reference beam and the signal beam respectively, and condenses the reference beam and the signal beam at different focal points on the optical axis so as to allow the reference beam and signal beam to interfere; a recording medium comprising a hologram recording layer at least positioned between the different focal points; and image detection means which is disposed on the optical axis and receives light returning from the hologram recording layer when the reference beam is irradiated on the hologram recording layer via an objective lens optical system. | 05-27-2010 |
20100142015 | HOLOGRAM RECORDING FILM AND METHOD OF MANUFACTURING SAME, AND IMAGE DISPLAY APPARATUS - A hologram recording film manufacturing method includes the steps of obtaining a laminated structure by alternately laminating M (where M≧2) photosensitive material precursor layers including a photosensitive material and at least one (M−1) resin layer on one another, obtaining M photosensitive material layers, where at least two interference fringes with a desired pitch and a desired slant angle are formed on each of the M photosensitive material layers, from the M photosensitive material precursor layers by irradiating the laminated structure with a reference laser light beam and an object laser light beam, and making the slant angles of the M photosensitive material layers different from each other while retaining the pitch value, which is defined on a face of the photosensitive material layer, by irradiating the laminated structure with an energy ray from the laminated structure's one face side, and heating the laminated structure. | 06-10-2010 |
20100157398 | 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, information on a thermal expansion characteristic of a recording material contained in the recording layer and/or information on temperature dependency of the refractive index of the recording material are recorded within the holographic recording medium in advance. | 06-24-2010 |
20100165426 | IMAGE RECORDING MEDIUM, HOLOGRAM REPLICATING DEVICE AND HOLOGRAM REPLICATING METHOD - An image recording medium in which a refractive index modulation is recorded in a material in a layer such that, when the hologram recording medium is illuminated from a predetermined angle and a viewpoint is moved horizontally with respect to a normal line, a hologram image having continuous parallax in at least the horizontal direction is reproduced and that, when the viewpoint is moved in a direction with respect to the normal line different from the horizontal direction, another image that is different from and thus is not continuous with the hologram image is reproduced. | 07-01-2010 |
20100182662 | RECORDING/REPRODUCTION METHOD AND HOLOGRAM RECORDING MEDIUM - A recording/reproduction method of performing recording/reproduction of a hologram by illuminating a hologram recording medium, which has a recording layer in which information is recorded by interference fringes between signal light and reference light, with the signal light and/or the reference light as recording/reproduction light through an objective lens includes the step of: setting a focal position of the recording/reproduction light such that a distance from a surface of the hologram recording medium to the focal position of the recording/reproduction light is larger than a distance from the surface to a lower-layer-side surface of the recording layer and illuminating the hologram recording medium including an angle-selective reflective layer, which is formed below the recording layer and has a selective light reflection/transmission characteristic depending on a light incidence angle, with the recording/reproduction light the focal position of which has been set. | 07-22-2010 |
20100188716 | HOLOGRAM RECORDING DEVICE - A hologram recording device includes a spatial light modulator having an informational light modulation region modulating part of light from a light source into informational light corresponding to information to be recorded and a reference light emission region emitting the remaining light as reference light, and records a hologram onto a recording medium (B) by causing the informational the reference lights to interfere on the recording medium while the informational and the reference lights are traveling along the same optical path. The hologram recording device includes: a light modulation controller for dividing the informational light modulation region into a plurality of light modulation blocks and controlling a modulation status of the informational light in each light modulation block respectively; and a light emission controller for dividing the reference light emission region into a plurality of light emission blocks and controlling an emission status of the reference light in each light emission block respectively, in conjunction with control of the modulation status in each light modulation block. | 07-29-2010 |
20100188717 | METHOD AND DEVICE FOR MANUFACTURING A HOLOGRAM RECORDING MEDIUM - Arrangements are made to enable different original images to be reproduced upon observation from different positions and yet enable reproduced images of high resolution to be obtained. In a case of recording two original images, each of the two original images Ia and Ib is defined as a set of point light sources in an XYZ global coordinate system, and two propagation spaces Sa and Sb, each enabling propagation of light emitted from an origin Q of an αβγ local coordinate system, are defined. A predetermined recording plane and a reference light are set in the XYZ coordinate system, and an interference fringe pattern, which is formed on the recording plane by object light components from the point light sources constituting the respective original images and the reference light, is determined by computation. In this process, the computation is performed upon deeming that a light from a point light source belonging to the original image Ia spreads only within the propagation space Sa, with the origin Q of the αβγ coordinate system being overlappingly set at the position of the point light source, and that a light from a point light source belonging to the original image Ib spreads only within the propagation space Sb, with the origin Q of the αβγ coordinate system being overlappingly set at the position of the point light source. | 07-29-2010 |
20100208314 | HOLOGRAM RECORDING MEDIUM - Disclosed herein is a hologram recording medium, wherein in a volume hologram, the hologram recording medium is covered with a partially patterned optical functional film on the side closer to the viewer than a hologram recording layer without the medium of air, and wherein the hologram recording medium maintains its appearance approximately unchanged irrespective of the presence or absence of the optical functional film. | 08-19-2010 |
20100231997 | DYNAMIC TIME MULTIPLEXING FABRICATION OF HOLOGRAPHIC POLYMER DISPERSED LIQUID CRYSTALS FOR INCREASED WAVELENGTH SENSITIVITY - Described herein is a new holographic polymer dispersed liquid crystal (HPDLC) medium with broadband reflective properties, and a new technique for fabrication of broadband HPDLC mediums. The new technique involves dynamic variation of the holography setup during HPDLC formation, enabling the broadening of the HPDLC medium's wavelength response. Dynamic variation of the holography setup may include the rotation and/or translation of one or more motorized stages, allowing for time and spatial, or angular, multiplexing through variation of the incident angles of one or more laser beams on a pre-polymer mixture during manufacture. An HPDLC medium manufactured using these techniques exhibits improved optical response by reflecting a broadband spectrum of wavelengths. A new broadband holographic polymer dispersed liquid crystal thin film polymeric mirror stack with electrically-switchable beam steering capability is disclosed. | 09-16-2010 |
20100231998 | MONOCULAR HOLOGRAPHIC DATA STORAGE SYSTEM ARCHITECTURE - A monocular holographic storage device or system to provide for compact recording and/or reading of data pages in a holographic storage medium. Also provided are methods for carrying out such data storage and/or data recovery using a monocular holographic storage device or system. Further provided are articles including holographic storage media for recording or for reading recorded data using such devices or systems. | 09-16-2010 |
20110013243 | DATA STORAGE ASSEMBLY WITH DIAMOND LIKE CARBON ANTIREFLECTIVE LAYER - A data storage assembly is presented. The data storage assembly comprises a bi-layered antireflective coating. An inner layer of the antireflective coating comprises diamond like carbon. An outer layer is disposed over the inner layer. | 01-20-2011 |
20110199658 | System and method for synchronizing a spatial light modulator with a pulsed laser to record a hologram at the repetition rate of the pulsed laser - A system and method that synchronizes a spatial light modulator (SLM) with a pulsed laser to record a hologram at the repetition rate of the pulsed laser for applications including holographic displays and data storage. The color channel capability of a SLM is utilized to effectively increase the write throughput when the pulsed laser repetition rate LR exceeds the SLM's image refresh rate R. The hogels are encoded on the color channels and concatenated to form a sequence of color images such that the write throughput is equal to the repetition rate LR up to a maximum of N*R. The invention effectively extends the capability and continued viability of existing inexpensive SLMs. | 08-18-2011 |
20110199659 | EXPOSURE DEVICE AND IMAGE FORMING DEVICE - There is provided an exposure device including: a light-emitting element array in which plural light-emitting elements are arrayed in a predetermined direction; and a hologram element array in which plural hologram elements are multiplex-recorded, in correspondence with the plural light-emitting elements, at a recording layer that is disposed above the light-emitting element array such that collected-light points, that are formed on a surface to be exposed by converging of diffracted lights that exit due to illumination of lights from the plural light-emitting elements, are aligned in the predetermined direction, and such that intersection points between optical axes of reference lights and optical axes of signal lights that record the plural hologram elements respectively are not aligned in the predetermined direction. | 08-18-2011 |
20110199660 | Hologram recording medium - A hologram recording medium includes: a hologram recording layer; and a light scattering layer, wherein a material having a reflection characteristic different from that of a main material forming the light scattering layer is arranged in the light scattering layer. | 08-18-2011 |
20110216382 | HOLOGRAM RECORDING MEDIUM, HOLOGRAM RECORDING APPARATUS AND METHOD, AND COMPUTER PROGRAM - A hologram recording apparatus ( | 09-08-2011 |
20110249308 | Collinear Holographic Storage Medium - In the specification and drawings, a collinear holographic storage medium is described and shown with a recording layer, wherein the lateral linear thermal expansion coefficient of the recording layer is substantially the same as the linear thermal expansion coefficient of the material of the recording layer. | 10-13-2011 |
20120013961 | EXPOSURE APPARATUS AND IMAGE FORMING APPARATUS - There is provided an exposing device including a light emitting element array of light emitting elements arrayed in a row along a predetermined first direction; a hologram recording layer in which hologram elements are multiplex recorded such that each of the hologram elements corresponds to one of the light emitting elements and diffracts an emission beam from the light emitting element and converges the light onto a light exposure plane, such that a focused beam spots are formed on the light exposure plane in a row along the first direction; and a first transmission control section, disposed at the light incident side of the hologram recording layer, provided with a structure in which light blocking sections and light transmitting sections are alternately arrayed along a second direction intersecting with the first direction, and selectively transmitting in the second direction light passing along the optical path of the reference beam. | 01-19-2012 |
20120026564 | COMPLEX HOLOGRAMS, METHOD OF MAKING AND USING COMPLEX HOLOGRAMS - A method of making a hologram includes recording a first hologram in a holographic recording medium at a first deformation ratio; changing the first deformation ratio to a second deformation ratio that is different from the first deformation ratio; and recording a second hologram in the holographic recording medium at the second deformation ratio to form a recorded holographic medium. | 02-02-2012 |
20120044550 | TRANSMISSION TYPE VOLUME HOLOGRAM RECORDING MEDIUM AND MANUFACTURING METHOD THEREOF - Provided is a transmission-type volume hologram recording medium for use in a two-beam hologram recording system, which has a high diffraction efficiency and is capable of significantly reducing the intensity of higher-order diffracted light, which causes a noise, than first-order diffracted light. | 02-23-2012 |
20120086993 | PHOTOPOLYMER MEDIUM FOR COLOR HOLOGRAM IMAGE RECORDING AND COLOR HOLOGRAM IMAGE RECORDING METHOD - A photopolymer medium | 04-12-2012 |
20120099170 | SEE-THROUGH DISPLAY AND HEAD-UP DISPLAY - A see-through display including a light source for emitting light, a projection optical system for projecting the light emitted by the light source, and a volume hologram for deflecting the light projected by the projection optical system. The volume hologram has a linear expansion coefficient of α (/° C.) and interference fringes recorded with recording light having a wavelength of Λ (nm). The wavelength of the light emitted by the light source has a temperature dependency of K (nm/° C.), and the wavelength Λ (nm) and the temperature dependency K (nm/° C.) satisfy the relationship of 0≦K/Λ≦2α. | 04-26-2012 |
20120127548 | MONOCULAR HOLOGRAPHIC DATA STORAGE SYSTEM ARCHITECTURE - A monocular holographic storage device or system to provide for compact recording and/or reading of data pages in a holographic storage medium. Also provided are methods for carrying out such data storage and/or data recovery using a monocular holographic storage device or system. Further provided are articles comprising holographic storage media for recording or for reading recorded data using such devices or systems. | 05-24-2012 |
20120188618 | OPTICAL INFORMATION REPRODUCING METHOD AND OPTICAL INFORMATION REPRODUCING APPARATUS - An optical information reproducing method and apparatus using an angle-multiplex recording type holographic memory. An optical information recording medium is exposed to a reference beam, the intensity of a diffracted beam diffracted in the medium is detected by a photodetector, an error signal is generated based on a value obtained by differentiating the detected intensity of the diffracted beam based on an angle of the reference beam, so that a reference beam angle control element is subjected to a feedback control. | 07-26-2012 |
20120250119 | HOLOGRAPHIC STORAGE METHOD - A method of recording a volume holographic image is described in which a holographic recording medium containing a photoreactive dye is exposed to a plurality of coherent light sources emitting at a wavelength to which the dye is sensitive, thereby forming an interference fringe pattern therein. The photoreaction occurring in the areas of constructive interference generates a periodic array of photoreacted areas of the dye and unreacted areas of the dye. This generated interference fringe pattern may contain, but does not have to contain any image or other encoded information. Selected areas of the interference fringe pattern are then exposed to actinic radiation in such a manner to partially or fully bleach, remove, or deactivate the photoreactive dye fringe pattern, thereby producing a holographic pattern, shape, or image formed by areas of the interference fringe pattern that were not bleached, removed, or deactivated. | 10-04-2012 |
20120250120 | MULTI-WAVELENGTH- HOLOGRAPHIC SYSTEMS AND METHODS - A holographic system for recording and reading information is provided. The system includes at least one laser for providing a laser beam. The system also includes a subsystem configured for multi-wavelength operation of said holographic system and recording micro-holograms at different wavelengths in substantially non-overlapping volumes of a holographic medium. | 10-04-2012 |
20120300272 | SURFACE RELIEF VOLUME REFLECTIVE DIFFRACTIVE STRUCTURE - Disclosed is a surface relief structure. The structure includes a recording medium configured to be structurally modified when exposed to interfering and non-interfering portions of radiation beams, the structurally modified recording medium including, when viewed in a two-dimensional cross-section along one of the axes of the recording medium a plurality of equally spaced steps of fine-sized periodicity superimposed upon a plurality of deep depressions of substantially coarse-sized periodicity. The structurally modified recording medium is configured to produce in reflection single and multiple colors in a broad spectral range when illuminated by a source of light. | 11-29-2012 |
20120327489 | SYSTEM, METHOD AND APPARATUS FOR WAVELENGTH-CODED MULTI-FOCAL MICROSCOPY - A volume holographic imaging system, apparatus, and/or method enables the projection of a two-dimensional (2D) slice of a four-dimensional (4D) probing object. A 4D probing source object is illuminated to emit or scatter an optical field. A holographic element having one or more recorded holograms receives and diffracts the optical field into a diffracted plane beam having spectral information. A 4-f telecentric relay system includes a pupil filter on the relayed conjugate plane of the volume hologram and images the pupil of the volume hologram onto the front focal plane of the collector lens. A collector lens focuses the diffracted plane beam to a 2D slice of the 4D probing source object. The focused 2D slice is projected onto a 2D imaging plane. The holographic element may have multiple multiplexed holograms that are arranged to diffract light from the corresponding slice of the 4D probing source object. | 12-27-2012 |
20130003151 | HOLOGRAPHIC STORAGE METHOD AND ARTICLE - A method of recording a holographic record is described. According to this method, a holographic recording medium is exposed to a desired pattern, shape, or image from a coherent light source emitting light at one or more wavelengths to which the holographic recording medium is sensitive. In this method, light having the desired pattern, shape, or image to which the holographic recording medium is exposed is diffracted by a spatially homogeneous optical diffraction element so that the holographic recording medium is exposed to a plurality of interfering light beams, thereby forming a holographic record in the holographic recording medium. Holographic recording articles are described that include a holographic recording medium and a spatially homogeneous optical diffraction element. | 01-03-2013 |
20130094069 | SPATIAL LIGHT MODULATORS, HOLOGRAPHIC 3-DIMENSIONAL DISPLAY APPARATUSES INCLUDING THE SPATIAL LIGHT MODULATORS, AND METHODS OF MODULATING SPATIAL LIGHT - A spatial light modulator may include a refraction layer including first and second regions with refractive indices different from each other; and/or a metal thin film on a lower face of the refraction layer configured to generate surface plasmons due to light incident on the metal thin film via the refraction layer. When first light is incident on the refraction layer, a phase difference between light reflected by the first and second regions may occur. A spatial light modulator may include a metal thin film and a refraction layer on the metal thin film. The refraction layer may include a first region with a first refractive index and a second region with a second refractive index different from the first refractive index. When first light is incident on the refraction layer, there may be a phase difference between light reflected from the first and second regions. | 04-18-2013 |
20130308170 | HIGH SPEED HOLOGRAM RECORDING APPARATUS AND METHOD - A high speed hologram recording apparatus and method. The hologram recording apparatus includes: a light source for emitting coherent light; a beam splitter for splitting the coherent light emitted from the light source into a signal beam and a reference beam; a signal beam transfer unit comprising an angular deflector that changes a direction of the signal beam according to time, and irradiating the signal beam onto a hologram recording medium; and a reference beam transfer unit irradiating the reference beam at a location of the hologram recording medium where the signal beam is also irradiated. | 11-21-2013 |
20140016167 | VOLUME HOLOGRAM TRANSFER FOIL, VOLUME HOLOGRAM LAMINATE, AND PRODUCTION METHOD THEREOF - A major object of the present invention is to provide a volume hologram transfer foil that gives a volume hologram laminate higher in antiforgery function. | 01-16-2014 |
20140036328 | STACKED FILM THRESHOLD COMPONENT, DEVICE, AND METHOD OF MANUFACTURE - A component includes a micro-hologram layer, where the micro-hologram layer includes layers inert to light interleaved with layers of functional film. The functional film layers are made of a material that undergoes a change in its refractive index when illuminated by a light beam, yet undergoes no change in its refractive index when illuminated by a different light beam. The components may further include interleaved spacer films with multiple micro-hologram layers and other elements (e.g., servo layer, coatings, and the like) so as to comprise a data storage device. Methods of manufacturing the component and device are also disclosed. | 02-06-2014 |
20140126029 | METHOD AND DEVICE FOR THE LAYERED PRODUCTION OF THIN VOLUME GRID STACKS, AND BEAM COMBINER FOR A HOLOGRAPHIC DISPLAY - The layered generation of at least one volume grating in a recording medium by way of exposure, the recording medium having at least one photosensitive layer which is sensitised for a presettable wavelength oft the exposure light. Each volume grating is generated in the recording medium by at least two wave fronts of coherent light capable of generating interference, the wave fronts being superposed in the recording medium at a presettable depth, at a presettable angle and with a presettable interference contrast. The depth and the thickness of the refractive index modulation and/or transparency modulation of a volume grating in the recording medium is controlled by depth-specific control of the spatial and/or temporal degree of coherence of the interfering wave fronts in the direction of light propagation. | 05-08-2014 |
20140160542 | Novel method of fast fourier transform (FFT) analysis using waveform-embedded or waveform-modulated coherent beams and holograms - Method of Fast Fourier Transform (FFT) Analysis for collecting waveforms and other vibrational intelligence and modulating or embedding same into one or more coherent reference beams of an n-dimensional holographic recording device for producing one or more holograms of objects, including singularity points in space. The result provides wholesale differentiation of waveforms distinguishable from others based on their spectral characteristics. When said holograms are presented with reference beams of vibrational waveforms having similar characteristics to those which were present during recording of the original objects, phantoms of the original objects or subjects will reconstruct themselves in space with an energy glow of intensity that varies thusly with the degree of similarity between the waveform modulations of the reconstructing wavefronts and those of that same which were used to originally record said objects. Said n-dimensional description space can be sampled of the said glowing phantoms. | 06-12-2014 |
20140168734 | SYSTEM AND METHOD FOR AUTOSTEREOSCOPIC IMAGING USING HOLOGRAPHIC OPTICAL ELEMENT - Systems and methods for creating an autostereoscopic display include a holographic optical element (HOE) recorded using coherent light divided into diverging reference and object beams that illuminate the HOE from opposite sides. The object beam passes through first and second diffusers with one diffuser being a directional diffuser to more uniformly illuminate the HOE. Optic elements may be used to more closely match beam diameters and/or profiles of the recording wavelengths. Baffles may be positioned on opposite sides of the HOE with openings aligned proximate the reference beam and object beam paths, respectively, to reduce stray reflections and provide ambient air flow attenuation or damping. One or more edges of the HOE are masked to reduce or prevent stray light from entering and reflecting within the HOE during recording. | 06-19-2014 |
20140192388 | METHOD AND APPARATUS FOR QUANTUM HOLOGRAPHIC INFORMATION PROCESSING - Encoding of quantum algorithm and devices therefrom are provided. The encoding includes receiving a unitary matrix operator representing the quantum algorithm, each row of the unitary matrix operator defining a superposition of basis state vectors for transforming input states to output states. The encoding also includes recording rows of the unitary matrix operator by applying, to a volume holographic element, a combination of an i | 07-10-2014 |
20140204436 | METHODS AND APPARATUSES FOR MANUFACTURING ULTRALONG FIBER BRAGG GRATINGS WITH ARBITRARY REFLECTION WAVELENGTH - Described are methods and apparatuses for manufacturing ultralong fiber Bragg gratings with arbitrary reflection wavelength. The method may include: generating two holographic beams entering a fiber with a certain intersection angle there-between from one side of the fiber and forming holographic interference fringes in the fiber, driving the two holographic beams to scan along the fiber by a motorized translation stage controlled by a computer; and adjusting the intersection angle between the two beams by motorized rotation stages or motorized mirror mounts controlled by the computer. The present disclosure can be applied in manufacturing ultralong fiber Bragg gratings with arbitrary reflection wavelength, such as narrow-reflection-band gratings, chirped gratings, and apodized gratings, etc. | 07-24-2014 |
20140218778 | Hologram - A substrate includes a diffracting structure providing a hologram ( | 08-07-2014 |
20140233079 | HOLOGRAM RECORDING FILM AND METHOD OF MANUFACTURING SAME, AND IMAGE DISPLAY APPARATUS - A hologram recording film manufacturing method includes the steps of obtaining a laminated structure by alternately laminating M (where M≧2) photosensitive material precursor layers including a photosensitive material and at least one (M−1) resin layer on one another, obtaining M photosensitive material layers, where at least two interference fringes with a desired pitch and a desired slant angle are formed on each of the M photosensitive material layers, from the M photosensitive material precursor layers by irradiating the laminated structure with a reference laser light beam and an object laser light beam, and making the slant angles of the M photosensitive material layers different from each other while retaining the pitch value, which is defined on a face of the photosensitive material layer, by irradiating the laminated structure with an energy ray from the laminated structure's one face side, and heating the laminated structure. | 08-21-2014 |
20140240805 | METHOD OF PRODUCING VOLUME HOLOGRAM LAMINATE - A main object of the present invention is to provide a method of producing a volume hologram laminate which can regenerate a hologram image in an arbitrary wavelength by a simple process. To attain the object, the present invention provides a method of producing a volume hologram laminate using a volume hologram forming substrate which comprises: 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, characterized in that the producing method comprises 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. | 08-28-2014 |
20150309473 | High Resolution Projection Micro Stereolithography System And Method - A high-resolution PμSL system and method incorporating one or more of the following features with a standard PμSL system using a SLM projected digital image to form components in a stereolithographic bath: a far-field superlens for producing sub-diffraction-limited features, multiple spatial light modulators (SLM) to generate spatially-controlled three-dimensional interference holograms with nanoscale features, and the integration of microfluidic components into the resin bath of a PμSL system to fabricate microstructures of different materials. | 10-29-2015 |
20150331167 | Direct Write Lithography for the Fabrication of Geometric Phase Holograms - A direct-write lithography apparatus includes a polarization selector stage configured to vary a polarization orientation angle of light from a light source, a focusing element configured to focus the light from the light source into a spot at a focal plane thereof, and a scanning stage configured to scan the spot in at least two dimensions along a surface of a polarization-sensitive recording medium that is arranged proximate to the focal plane such that neighboring scans substantially overlap. The polarization selector stage and the scanning stage are configured to be operated independently of one another. Related fabrication methods of and optical elements fabricated thereby are also discussed. | 11-19-2015 |
20150362734 | TRANSFLECTIVE HOLOGRAPHIC FILM FOR HEAD WORN DISPLAY - A display panel assembly comprises a transflective holographic screen, i.e., a transparent screen that reflects light from a projection system, comprising at least a volume hologram, a first protective element and a second protective element, each arranged in contact with the volume hologram such that the volume hologram is sandwiched between the first protective element and the second protective element. The display panel assembly further comprises a projection system focusing an image on the volume hologram comprising at least projection optics, mounting means arranged to fixedly mount the projection system relatively to the transflective holographic screen. The volume hologram comprises a plurality of diffractive patterns disposed in sequence across the volume hologram, each of the plurality of diffractive patterns being configured to diffuse the light rays from the projection system in a determined direction corresponding to the specific diffractive pattern and oriented towards a position of an intended eye of a user wearing the display panel assembly. | 12-17-2015 |
20150378307 | HOLOGRAPHIC REPRODUCING APPARATUS AND METHOD, HOLOGRAPHIC IMPLEMENTING DEVICE AND METHOD - A holographic reproducing apparatus includes: a photorefractive crystal configured to have holographic images recorded in a plurality of different angles respectively; and a light source configured to supply a plurality of reproducing light beams to be incident to the photorefractive crystal in different angles, wherein the reproducing light beams have a same frequency and a same optical length as a reference light beam used when the holographic images are formed. In the holographic reproducing apparatus, each of the holographic images can be presented in different angles without interference therebetween, so that observers in a plurality of orientations can view the holographic images recorded in the photorefractive crystal, thus the problem that the viewing angle is unique in the holographic reproducing procedure is addressed. | 12-31-2015 |
20160116656 | LARGE BANDWIDTH VOLUME HOLOGRAPHIC PHASE CONVERTER APPARATUS, METHODS, AND APPLICATIONS - A volume Bragg grating (VBG) containing one or more controlled phase profiles holographically embedded therein that is operable over a broad wavelength range, methods for making such controlled phase profile-embedded VBGs, and applications thereof. | 04-28-2016 |