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9001401 Fabrication process of multi-image type hologram, and multi-image type hologram fabricated by that process  
A process by which a multi-image type hologram, wherein one 3D image changes over to another depending on a viewing direction, can be fabricated in a simple construction, and a multi-image type...
8842351 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...
8828624 Method and device for fabricating volume Bragg gratings  
A system for recording multiple volume Bragg gratings (VBGs) in a photo thermo-refractive material is configured to implement a method which provides for irradiating the material by a coherent...
8797382 Dynamically reconfigurable holograms for generating color holographic images  
Various embodiments of the present invention are directed to negative refractive index-based holograms that can be electronically controlled and dynamically reconfigured to generate one or more...
8717650 Method and system for producing multiple images in a single image plane using diffraction  
Methods create images viewable under different selected angles on optical storage devices and other photosensitive surfaces and optical storage devices with super-imposed images. Generally, a...
8642231 Hologram fabrication process and fabricated hologram  
A volume hologram recording material is located on the side of a reflection type volume hologram master onto which copying illumination light is incident, and the copying illumination light...
8630032 Method for preparing hologram recording medium  
Two adjacent images are recorded in a state smoothly blended at a boundary portion. On a recording plane Rec, provided is a region M1 in which an original image Pic(A) is recorded, a region M2 in...
8625183 Three dimensional holographic volumetric display  
A holographic volumetric display comprises a pattern generation unit (20), a programmable lighting device and a holographic screen (28). The holographic screen contains one or more pre-recorded...
8450029 Multi-layer body and process for the production of a multi-layer body  
A multi-layer body having a partially shaped first layer and a diffractive first relief structure shaped in a first region of a replication layer. The first layer is applied to the replication...
8294965 Holographic reconstruction system and method with a sequence of visibility regions  
A holographic reconstruction system and method for the three-dimensional reconstruction of object light points of a scene. The system includes spatial light modulation means which modulate light...
8279507 Hologram and holgraphic viewing device incorporating it  
The invention relates to a hologram that enables two or more different images to be simultaneously reconstructed even in a state where the hologram is fixed in terms of relative position with...
8264757 Method and system for producing multiple images in a single image plane using diffraction  
Methods create images viewable under different selected angles on optical storage devices and other photosensitive surfaces and optical storage devices with super-imposed images. Generally, a...
8247139 Volume holographic data recording media  
There is provided volume holographic data recording media having a recording layer which is capable of recording interference fringes generated by interference of light having excellent coherence...
8228574 Holographic data storage medium and apparatus and method for recording/reproducing holographic data to/from the same  
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...
8218213 Narrow angle hologram device and method of manufacturing same  
A method of manufacturing a master for producing a hologram device. A first master is produced with a compensating angle. The second master is produced from the first master with an index matching...
8187771 Multi-layer body with volume hologram  
Described is a process for the production of a multi-layer body having a volume hologram with at least two different items of image information, wherein a photosensitive layer (46) of the...
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...
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...
8120829 System and method for real time holographic data recording and readout  
A method for holographic data recording and simultaneous data readout without requiring additional optical power for readout illumination is provided. The method comprises reflecting a transmitted...
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...
8081360 Light-collecting device, light-collecting device array, exposure device and image-forming apparatus  
A light-collecting device is provided, a light-collecting device, including: a first volume hologram recorded in a hologram recording layer by interference of a first spherical wave and a planar...
7847993 Hologram element, illuminator, and projector  
The disclosure is directed to hologram elements, illuminators, and projectors. In one example, a hologram element comprises a relief structure configured to diffract incident light to form a first...
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...
7760407 Multilayer holographic recording medium and manufacturing method of the same, multilayer holographic recording and reproducing method, multilayer holographic memory reproducing apparatus, and multilayer holographic recording and reproducing apparatus  
A multilayer holographic recording medium that improves recording density and data transfer rates. The multilayer holographic recording medium, from which information is reproduced by a multilayer...
7679797 Hologram and holographic viewing device incorporating it  
The invention relates to a hologram that enables two or more different images to be simultaneously reconstructed even in a state where the hologram is fixed in terms of relative position with...
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...
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...
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...
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...
7312907 Hologram apparatus and hologram recording and playback method  
A hologram recording and playback method comprises establishing in advance a test region adapted to record a piece of test data for each of a reference incidence angle and a plurality of stepped...
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...
7301683 Hologram and holographic viewing device incorporating it  
The invention relates to a hologram that enables two or more different images to be simultaneously reconstructed even in a state where the hologram is fixed in terms of relative position with...
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...
7271944 Electro-optical device and electronic apparatus having the same  
An electro-optical device includes: a first optical panel having a pair of substrates with an electro-optical material interposed therebetween; a second optical panel that has a pair of substrates...
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...
7259899 Narrow angle hologram device and method of manufacturing same  
A method of manufacturing a master for producing a hologram device. A first master is produced with a compensating angle. The second master is produced from the first master with an index matching...
7244532 Holographic recording medium  
A holographic recording medium includes a holographic recording carrier including a first light transmittable substrate, a second light transmittable substrate and a holographic recording layer...
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...
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...
7229720 Hologram film having identification information recorded thereon and method for manufacturing the same  
A simplified method is provided for recording identification information, such as a serial number or the like, in a hologram-recorded film simultaneously with hologram duplication. The method...
7193757 Angle multiplexing holographic storage device and method  
In an angle multiplexing holographic storage device, a movable beam splitter is used for splitting a source beam into an object beam and a reference beam. An encoding device is used for encoding...
7184183 Hologram recording/reproducing apparatus and hologram recording/reproducing method  
This invention provides a hologram recording apparatus for recording an interference fringe, generated by interference of a first light beam subjected to spatial light modulation by recording data...
7167286 Polytopic multiplex holography  
Disclosed is a multiplexing method and apparatus that allows holograms to be spatially multiplexed with partial spatial overlap between neighboring stacks of holograms. Each individual stack can...
7149015 Obliquity correction scanning using a prism mirror  
Disclosed are optical systems and methods of producing obliquity corrected light beams, for example, holographic recording and retrieval systems that utilize an obliquity corrected reference beam....
7095539 Method of forming a three-dimensional orthoscopic image from its pseudoscopic image  
A method of forming a three-dimensional orthoscopic image from a pseudoscopic image comprising preparing an integral photograph representing the pseudoscopic image, and reconstructing a...
7092133 Polytopic multiplex holography  
Disclosed is a multiplexing method and apparatus that allows holograms to be spatially multiplexed with partial spatial overlap between neighboring stacks of holograms. Each individual stack can...
7046406 Hologram plate and its fabrication process  
The invention provides a hologram plate which is used with the double-focus replication process, and which is integrated with a spacer to impart marring resistance thereto, and is integrated with...
6970292 Beam shaping element for use in a lithographic system  
A beam homogenizer that minimizes undesired intensity variations at the output plane caused by sharp breaks between facets in previous embodiments. The homogenizer includes a hologram made up of...
6859293 Active digital hologram display  
Certain types of holographic recording materials can be used to updateably record holographic stereograms formed when fringe patterns are generated through interference of an object laser beam...
6852452 Method of fabricating hologram screen and hologram imaging apparatus  
A method of fabricating a hologram screen having a large visual range and a hologram imaging apparatus used for the particular method of fabricating the hologram screen are disclosed. A plurality...

Matches 1 - 50 out of 241 1 2 3 4 5 >