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8179579 |
HROM replication methods, devices or systems, articles used in same and articles generated by same
HROM replication methods, devices or systems are disclosed herein. Also disclosed herein are articles comprising conical reference (reconstruction) beam hologram elements to generate conical or...
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8169676 |
Holographic storage system with multiple reference beams
An apparatus for reading from and/or writing to holographic storage media is described, and more specifically an apparatus for reading from and/or writing to holographic storage media with two or...
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8135219 |
Method of detecting and compensating fail pixel in hologram optical storage system
A method of detecting and compensating fail pixels in a holographic storage system. The method includes steps of: providing a plurality of image frames to show on a data plane for all pixels on the...
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8094185 |
Three-dimensional image display method and apparatus
A three-dimensional image display method, includes: displaying a three-dimensional image including a left eye image signal and a right eye image signal displayed at a display focus angle;...
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8054519 |
Wavelength-multiplex and space-multiplex holographic storage device
The present invention discloses a wavelength-multiplex and space-multiplex holographic storage device, which comprises a storage medium, a plurality of signal light beams and at least one reference...
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8049942 |
Multiplexed holographic recording apparatus and method and holographic reproduction apparatus and method
A multiplexed holographic recording apparatus records multiplexed holograms in a plurality of recording regions that are formed on a holographic recording medium. In particular, the apparatus first...
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7995257 |
Holographic storage medium, recording and/or reproducing apparatus, and recording and/or reproducing method
A holographic storage medium includes a hologram including data recorded in a plurality of pages in a superimposed fashion by interference of a signal beam and a reference beam, and an additional...
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7936491 |
Hologram recording medium, hologram recording apparatus and method, and computer program
A hologram recording apparatus (300) is provided with: a recording device (100) for recording record information into a hologram recording medium (1); a measuring device (325) for measuring a time...
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7920311 |
Holographic storage medium and method and apparatus for recording and/or reproducing data to and/or from a holographic storage medium
A method and apparatus for recording and/or reproducing data to and/or from a holographic storage medium and a holographic storage medium therefor are provided. The method of reproducing data from...
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7869106 |
Holographic recording method, holographic recording apparatus, holographic recording and reproducing method, holographic recording and reproducing apparatus, and holographic recording medium
A holographic recording method, a holographic recording apparatus, a holographic recording and reproducing method, a holographic recording and reproducing apparatus, and a holographic recording...
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7822304 |
Laser beam multiplexer
A laser beam multiplexer capable of easily multiplexing a plurality of laser beams is provided. A laser beam multiplexer includes a multiplexing element having a hollow portion with a sectional...
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7813017 |
Method and system for increasing holographic data storage capacity using irradiance-tailoring element
A method and system is disclosed for increasing the holographic storage capacity of a holographic recording medium using an irradiance-tailoring (e.g., optical) element by changing the irradiance...
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7808687 |
Hologram reconstructing apparatus and hologram reconstructing method
A hologram reconstructing apparatus is disclosed. The apparatus includes: unnecessary light removing means for causing the imaging means to receive necessary light only included in the...
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7804633 |
Hologram recording film with additional information and recording method therefor
A hologram recording film has an image of a three-dimensional object, e.g. a three-dimensional model, recorded in a volume hologram photosensitive material and further has a hologram image of a...
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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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7791779 |
Hologram recording apparatus, hologram recording medium and hologram recording method
A hologram recording apparatus that records a hologram on a recording layer of a hologram recording medium by causing interference between signal light modulated in accordance with record data and...
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7787165 |
High density, high bandwidth multilevel holographic memory
A holographic memory system and apparatus, and a method provide the ability to store multibit holograms in a photorefractive crystal. A single laser diode is configured to emit a collimated laser...
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7760408 |
Hologram recording device and hologram recording method
A hologram recording device for irradiating a recording beam (S) to a hologram recording medium (B) at a fixed incident angle (θs) and irradiating a reference beam (R) to an illuminated region (p) ...
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7715074 |
Holographic recording device
A holographic recorder can vary the optical distance between an object lens and a relay lens near the object lens. This arrangement allows defocus-multiplexing utilizing state variations in the...
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7715073 |
Hologram recorder
A hologram recorder is provided, in which coherent light from a light source is split into a signal beam and a reference beam, and the signal beam is modulated by a spatial light modulator to be...
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7710622 |
Color hologram display and its fabrication process
The invention relates to a color hologram display an image of a three-dimensional object and a hologram image of a pattern of plane characters, images or the like are recorded in the same volume...
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7697191 |
Generation of a desired three-dimensional electromagnetic field
The present invention relates to a method and a system for synthesizing a prescribed three-dimensional electromagnetic field based on generalized phase contrast imaging. Such a method and apparatus...
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7656564 |
Apparatus and method for compensating for pixel distortion in reproduction of hologram data
An apparatus for compensating for pixel distortion while reproducing hologram data includes an extraction unit, a determination and calculation unit, a table, and a compensation unit. The...
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7636185 |
Hologram recording device and hologram recording method
A hologram recorder records a hologram in a hologram recording medium by interference of a recording beam irradiated at a predetermined incident angle to the medium via a spatial light modulator...
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7633660 |
Hologram recording apparatus and method
A hologram recording apparatus includes a laser light source for emitting laser light, a light splitter for splitting the laser light emitted from the laser light source into a signal beam and a...
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7595923 |
Optical head and multiplexing methods for reflection type holographic storage using spatial filtering
The invention describes a collinear optical head for a reflection-type holographic recording medium, which is capable of obtaining an increased capacity. The optical head presented here allows for...
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7589876 |
Holographic memory reproduction method and apparatus
A method and apparatus for performing reproduction position servo-control without reducing the recording capacity of a holographic recording medium. Upon the reproduction of a holographic recording...
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7589877 |
Short stack recording in holographic memory systems
The present invention provides one or more books of holograms recorded in a recording medium, wherein two or more short stacks of the one or more books have locations that differ from each other by...
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7583424 |
Hologram information reproducing device
A hologram information reproducing device is described which can reproduce information from a recording medium on which hologram information is recorded, and which can be downsized. In one aspect,...
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7557971 |
System and method for managing multiple write sessions to holographic storage media
A holographic storage system records digital data to a holographic recording medium at recording locations that are strategically left open. A controller determines whether or not a predetermined...
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7542639 |
Holographic pump coupler and laser grating reflector
In the present invention, a volume holographic optical element is used as a pump coupler. The holographic coupler allows at least one pump wavelength to be coupled into the laser medium. The...
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7532373 |
Holographic recording method, holographic recording apparatus, holographic memory reproducing method, holographic memory reproducing apparatus, holographic recording and reproducing apparatus, and holographic recording medium
The pitch of light beam spots on a light receiving surface of an address detector upon search of information recorded on a holographic recording medium is decreased to reduce a distance between the...
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7480084 |
Holographic filter with a wide angular field of view and a narrow spectral bandwidth
A holographic optical filter that includes an optical recording medium for storing several multiplexed reflection holograms that are formed by successive interference between two or more collimated...
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7443553 |
Holographic sensors and their production
An array of discrete sensors disposed on a substrate, each sensor comprising a holographic support medium and a hologram disposed throughout the volume of the medium, whereby interaction with an...
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7388695 |
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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7382508 |
Holographic recording medium and writing method therefor
A holographic recording medium having a recording layer on which holograms are formed by interference between an object beam and a reference beam to thereby record information. The recording layer...
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7367705 |
Long curved wedges in an optical film
The invention relates to a light redirecting polymeric film comprising a plurality of polymeric individual optical elements wherein the elements comprise curved wedge shaped features in the plane...
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7362482 |
Inline type speckle multiplexed hologram recording apparatus and inline type speckle multiplexed hologram recording method
An inline type speckle multiplexed hologram recording apparatus and method is disclosed which can condense signal light and reference light in a sufficiently overlapping relationship with each...
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7342697 |
Hologram recording medium
A hologram recording medium includes a hologram recording layer and a transparent substrate layer stacked on the hologram recording layer. The recording layer records an interference pattern of a...
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7339711 |
Angle-multiplexing hologram recording device, method, hologram reproduction device, and method
A hologram recording apparatus (100) includes a record angle change device (19) capable of relatively changing the record angle of a hologram recording medium (200) relative to signal light (L3)...
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7333253 |
Multiplex recording type hologram recording device, method, hologram reproduction device, and method
A hologram record apparatus (100) includes a parameter set device (19), a move device (20), and a control device (18). The parameter set device (19) modifies parameters for multiple recordings such...
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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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7307769 |
Hologram recording medium, recording/reproducing method and recording/reproducing apparatus
A hologram recording medium is for recording or reproducing information with light irradiated thereto. The medium has a recording layer made of a photo-sensitive material, a reflective layer...
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7283286 |
Hologram recording/reproducing device and optical unit
A hologram recording/reproducing device includes a laser light source emitting laser light; a spatial light modulator generating signal light and reference light from the laser light emitted from...
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7277211 |
Hologram recording and reproduction apparatus, hologram recording and reproduction method and hologram recording medium
An apparatus and method is disclosed wherein, even if the multiplicity in multiplexing of recording data is increased, positioning of data upon reproduction can be performed with a high degree of...
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7262893 |
Data read/write device for holographic WORM and method thereof
A data writing and reading device is capable of writing and reading data with respect to a holographic storage medium. The data writing and reading device includes a light source which emits a...
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7248389 |
Holographic recording and reconstructing apparatus and holographic recording and reconstructing method
A holographic recording and reconstructing apparatus includes a laser light source for emitting a laser beam, a beam splitting element for splitting the emitted laser beam into a signal beam and a...
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7245408 |
Systems and methods for producing wide field-of-view holographic displays
Hologram recording devices and techniques can be employed to produce wide-field-of-view holograms. In one embodiment, a specialized lens is used to couple an object beam into a holographic...
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7236277 |
Holographic recording medium and holographic recording method using the same
A holographic recording medium has at least a recording layer with a thickness of L which comprises a recording layer material having an absorption coefficient of α and containing a ...
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7215451 |
Reflection type diffuse hologram, hologram for reflection hologram color filters, etc., and reflection type display device using such holograms
A method of fabricating a hologram having a pattern made up of pixels in which a photosensitive material for forming a hologram is stacked on either a reflection-type hologram or a transmission...
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