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7633662 |
Holographic drive head alignments
Structures, subassemblies, devices, systems, and subsystems selected from: (1) a unitary holographic drive head assembly mounting structure; (2) an assembly including a unitary holographic drive...
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7625674 |
Switchable holographic gratings
The present invention includes systems and compositions of holographic grating structures devices and methods for fabricating such holographic grating structures. The method comprises the steps of...
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7619808 |
Light wave front construction
A method for producing a 3D image includes providing a pixel-by-pixel map over a preselected aperture of relative phases for coherent light scattered by or transmitted through a desired scene. The...
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7616363 |
Method and apparatus for mass production of holograms
A device and method for mass producing reflection holograms. Photosensitive material is drawn across an object to be copied and coherent radiation is scanned across the material and the object. The...
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7548360 |
Holographic printer
A single method and apparatus for producing many of the most common types of hologram from digital data is disclosed. The data are generated entirely by a computer as a 3-D (animated) model or from...
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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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7538921 |
Hologram reproducing apparatus
A compact and low-cost hologram reproducing apparatus with a simple mechanism is provided. A light source 1 and a lens 11 for generating parallel light are provided on an inner surface of a...
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7538920 |
Hologram reproduction apparatus and hologram reproduction method
A reproduction apparatus is provided which reproduces, from a hologram recording medium on which digital data are recorded as an element hologram formed from interference fringes generated by...
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7529008 |
Hologram recording method and hologram recording device
A hologram recording method for recording information of signal light as holograms in an optical recording medium, which includes illuminating signal light at the optical recording medium;...
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7525706 |
Data page pixel shaping for holographic recording
The shaping of pixels of a data page for holographic recording, a holographic recording medium including data pages with shaped pixels, and apparatuses for writing to or reading from such...
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7515320 |
Holographic device
There is provided a holographic device that reproduces information by irradiating light beams emitted from a light beam generator onto a recording medium formed with a hologram. The light beam...
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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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7489427 |
Hologram recording device, hologram reproduction device, hologram recording method, and hologram reproducing method
In recording of an interference fringe of a reference beam and a signal beam in a hologram recording medium, at the time of multiple recording of holograms in the same recording region by varying...
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7480085 |
Operational mode performance of a holographic memory system
Aspects of the present invention are generally directed to a holographic system. Generally, aspects of the present invention are directed to allocating power of a light beam generated by a coherent...
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7477433 |
Hologram recording method, optical recording medium, and hologram-recording device
A hologram-recording method including recording a reflection-type volume hologram onto an optical recording medium by irradiating the optical recording medium with a modulated beam obtained by...
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7471431 |
Hologram device and hologram recording/reproducing method
A hologram device records information of an interference fringe of signal light and reference light onto a hologram recording medium and reproduces the recorded information by emitting the...
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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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7436537 |
Distributed system for producing holographic stereograms on-demand from various types of source material
A distributed system for producing holographic stereograms (holograms). A data acquisition station is typically remote from image processing, printing, and replicating stations. The data...
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7428085 |
Method for producing hologram by pico-second laser
Disclosed is a method of producing a hologram through a two-beam laser interfering exposure process, which comprises emitting a coherent laser light with a pulse width (τ) ranging from greater...
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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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7405851 |
Method for identifying articles
The invention relates to a method for identifying articles, wherein article identification data are made available and the article is provided with a hologram representing said data so that the...
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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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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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7372602 |
Method for recording and reproducing holographic data and an apparatus therefor
A holographic recording and reproducing method for recording data in a holographic recording medium comprising a recording layer in which data are to be recorded as phase information of light by...
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7369286 |
Hologram recording medium, and recording apparatus and reproducing apparatus for the same
A hologram recording medium, and a recording apparatus and a reproducing apparatus for the same, by which scattered beam noise is minimized and recording capacity is increased using spatial...
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7362483 |
Postprocessing apparatus and postprocessing method
A postprocessing apparatus for conducting postprocessing on an image forming member, including a receiving unit for receiving an image forming member having an image formed thereon, and an...
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7345799 |
Optical recording medium and its use
An optical recording medium which comprises a holographic recording layer on which information is recorded by means of holography, a light shield member fixed to at least one of main surfaces of...
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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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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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7307770 |
Hologram imaging device and method of using same
A hologram imaging device for obtaining hologram images and associated document markings which are commonly being used for document verification is disclosed. The imaging device comprises a housing...
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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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7295356 |
Method for improved holographic recording using beam apodization
An apodization system for achieving a substantially uniform intensity profile of a modulated reference beam on a holographic recording medium. The substantially uniform intensity profile serves to...
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7289255 |
Hologram apparatus, positioning method for spatial light modulator and image pickup device, and hologram recording material
The present invention provides a hologram apparatus for recording interference fringes formed from reference light and signal light optically spatially modulated by a spatial light modulator on a...
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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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7277208 |
Hologram recording medium, hologram recording and reproduction apparatus and method of producing a hologram recording medium
A hologram recording medium is provided which can prevent sensitization of a region thereof other than a data recording region thereby to prevent deterioration of a characteristic of the hologram...
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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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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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7258957 |
Method for aligning exposure mask and method for manufacturing thin film device substrate
A method for aligning an exposure mask, comprises: using a plurality of hologram masks, on which alignment marks are formed,; aligning position of the hologram masks toward an object, which is...
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7255968 |
Alignment method of exposure mask and manufacturing method of thin film element substrate
A method for aligning an exposure mask comprises: using a plurality of hologram masks, on which an alignment mark is formed; aligning position of the hologram masks toward an object to be exposed...
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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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7230747 |
Hologram retention method
Information recorded as a hologram in a predetermined position of an optical recording medium is reproduced, and subsequently the reproduced information is re-recorded and retained in the same...
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7227675 |
Hologram recording medium, recording/reproducing apparatus and method therefor
A hologram recording medium in which data is recorded at a high density, the input of a reference beam to an area to which data is not to be recorded of a recording layer is prevented when...
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7209270 |
Method and apparatus for phase correlation holographic drive
A holographic storage apparatus for recording data in a holographic medium includes at least one light source for generating a reference beam and a signal beam. The reference beam is preferably a...
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7206105 |
Hologram recording device and hologram reproduction device
A hologram record apparatus ( 100 ) includes a spatial light modulator ( 15 ) and a control device ( 18 ). The spatial light modulator ( 15 ) is arranged on an optical path of signal light (L 1 )...
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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...
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7190496 |
Enhanced environment visualization using holographic stereograms
Hologram production techniques can combine source data representing realistic information describing an environment with source data providing representational information describing a feature of...
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7187481 |
System and method for providing gain and thresholding to a holographic data parallel recording and replication system incorporating independent angular address assignment
System and method for providing gain and thresholding to a holographic data parallel recording and replication system incorporating independent angular address assignment. A plurality of...
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7161723 |
Scheme capable of providing gain and thresholding to the parallel recording and replication of holographic media
A system and method capable of providing high data rate data copying and recording in holographic data storage while maintaining the copied data's signal-to-noise ratio. This is achieved by using...
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