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President Rutherford B. Hayes ; Said in 1876, after Alexander Graham Bell demonstrated the telephone to him at the White House
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| Number | Title | Issue Date |
| 8174745 | Optical unit, method for controlling drive, and holographic apparatus An optical unit includes an acousto-optic deflector and a drive control unit. The drive control unit controls the acousto-optic deflector by changing a frequency of a voltage applied to an acousto-optic medium of the acousto-optic deflector to a frequency in a first... | 05/08/2012 |
| 8064116 | Apparatus and method for producing a hologram A holographic recording system (1) includes a transparent or semi-transparent holographic recording medium (6), a source of coherent optical radiation (7), and an optical system (10). The recording medium has a first side (25) pres... | 11/22/2011 |
| 8009341 | Holographic information recording and reproducing apparatus for the same In a holographic information recording and reproducing apparatus, an optical fiber guides a reference beam toward a recording medium for holographic recording, and a precision rotator is turned, so that the reference beam is incident on the recording medium at diffe... | 08/30/2011 |
| 7961367 | Method and system for producing multiple images in a single image plane using diffraction Methods create images viewable under different selected angels on optical storage devices and other photosensitive surfaces and optical storage devices with super-imposed images. Generally, a photosensitive surface is exposed with multiple diffraction patterns creat... | 06/14/2011 |
| 7929191 | Spatial light modulator and light sensing device provided on the same substrate A holographic memory system includes a spatial light modulator having multiple modulators for spatially modulating at least a portion of a light beam emitted from a light source and rendering it as an information light beam, and a light sensing device for reading th... | 04/19/2011 |
| 7903310 | Hologram recording/reproducing apparatus, hologram multiplex recording method, and hologram recording medium utilizing reaction rate information and a recording interval time based on the reaction rate information An object is to prevent lowering of a dynamic range of a hologram recording medium without lowering an average data transfer rate, and to provide stabilized recording sensitivity. A scheduler determines a recording interval time from the point of time when light is ... | 03/08/2011 |
| 7830573 | 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 photosensitive surface is exposed with multiple diffraction patterns creat... | 11/09/2010 |
| 7800803 | 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 multiple 2-D camera images taken of a real 3-D (moving) object or sc... | 09/21/2010 |
| 7719735 | Hologram recorder A hologram recorder (A) records holograms in a selected unit recording area (B1) of a hologram recording medium (B) by interference between a recording beam (Lr) which is applied vertically to the unit recording area (B1) and a reference beam (Lr) whic... | 05/18/2010 |
| 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 head assembly mounting structure and a plurality of holographic drive h... | 12/15/2009 |
| 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 object may comprise a component which is variable, such as a counter... | 11/10/2009 |
| 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 multiple 2-D camera images taken of a real 3-D (moving) object or sc... | 06/16/2009 |
| 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 generator has a substrate and a plurality of light emitting units provide... | 04/07/2009 |
| 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 light source among the various discrete light beams used in a hologr... | 01/20/2009 |
| 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 acquisition station is designed to maximize customer convenience, and may be th... | 10/14/2008 |
| 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 than 900 femtoseconds to 100 picoseconds and a laser power of 10 μJ/pul... | 09/23/2008 |
| 7423792 | 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 multiple 2-D camera images taken of a real 3-D (moving) object or sc... | 09/09/2008 |
| 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 as quickly as possible and with little effort with simultaneous accur... | 08/19/2008 |
| 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 article can be identified by way of an intensity profile corresponding t... | 07/29/2008 |
| 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 of micro-holograms each contained in a corresponding one of the volume... | 06/17/2008 |
| 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 write beam relative to the storage medium and having a first objective fo... | 06/10/2008 |
| 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 projecting a signal beam and a reference beam thereonto and a servo lay... | 05/13/2008 |
| 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 separation and polarization separation in an optical system where a referenc... | 05/06/2008 |
| 7365858 | Systems and methods for phase measurements Preferred embodiments of the present invention are directed to systems for phase measurement which address the problem of phase noise using combinations of a number of strategies including, but not limited to, common-path interferometry, phase referencing, active st... | 04/29/2008 |
| 7366378 | Ultrafast laser machining system and method for forming diffractive structures in optical fibers An ultrafast laser machining system and method to form diffractive structures in optical fibers. The fiber is mounted with its longitudinal axis perpendicular to the beam path of the laser pulses. A region of the fiber is illuminated and then imaged with two cameras... | 04/29/2008 |
| 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 attaching unit for attaching a hologram recording medium in which a hologram ... | 04/22/2008 |
| 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 the holographic recording layer, a control electrode for controlling a ... | 03/18/2008 |
| 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 recording beam and a reference beam. The transparent substrate layer h... | 03/11/2008 |
| 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) and reference light (L2); and a cont... | 03/04/2008 |
| 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 as a record angle and a focal dep... | 02/19/2008 |
| 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 means of two-step illumination followed by thermal development. This disc... | 02/05/2008 |
| 7324248 | Holographic printer A method and apparatus for producing holograms may use a computer generated 3-D model or data generated using multiple 2-D camera images taken of a real 3-D object or scene. The data is digitally processed and displayed on a high resolution spatial light modulator (... | 01/29/2008 |
| 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 compliant with the Schimpflug and hinge Rules containing: two identical lense... | 01/15/2008 |
| 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 defining an imaging chamber, camera, hologram light source, document... | 12/11/2007 |
| 7304933 | Optical recording apparatus using scanning mirror for generating two-dimensional beam The present invention relates to an optical recording apparatus, which converts a one-dimensional signal beam into a two-dimensional signal beam using a scanning mirror at the time of recording data on a holographic recording medium, etc., thus greatly reducing requ... | 12/04/2007 |
| 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 production environments. The inventive device utilizes a division-of... | 12/04/2007 |
| 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 improve the quality of any and all recorded holograms. In high-densit... | 11/13/2007 |
| 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 hologram recording material or picking up an image of reproduction sig... | 10/30/2007 |
| 7286764 | Reconfigurable modulator-based optical add-and-drop multiplexer An optical add and drop multiplexer system comprising a first module for providing a first signal; a second module for providing a second signal; and a modulator for receiving a channel of the first signal at a first location, the first location configured to actuat... | 10/23/2007 |
| 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 the laser light source, the signal light and the reference light trave... | 10/16/2007 |
