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| Number | Title | Issue Date |
| 7348201 | Creation of anisotropic strain in semiconductor quantum well Methods and devices for creating an anisotropic strain in a semiconductor quantum well structure to induce anisotropy thereof are disclosed herein. Initially, a substrate is provided, and a quantum well structure formed upon the substrate. A first crystalline layer ... | 03/25/2008 |
| 7349158 | Diffraction grating-based encoded micro-particles for multiplexed experiments Microparticles 8 includes an optical substrate 10 having at least one diffraction grating 12 disposed therein. The grating 12 having a plurality of colocated pitches Λ which represent a unique identification digital code that is detected... | 03/25/2008 |
| 7317814 | Authentication system and method An authentication system using a correlator that correlates an input with a reference wherein at least one of the input and reference comprises a phase volume mask having structures, preferably points, that are each less than about six microns in size and can have a... | 01/08/2008 |
| 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 jets, and similar devices can be used to deposit one or more compone... | 09/18/2007 |
| 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 photorefractive material, wherein the optical density αL represented by the produc... | 06/26/2007 |
| 7227674 | 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 containing image information with a reference laser beam. In this manner,... | 06/05/2007 |
| 7224867 | Holographic spectral filter Method and apparatus are contemplated for receiving from an input, an optical signal in a volume hologram comprising a transfer function that may comprise temporal or spectral information, and spatial transformation information; diffracting the optical signal; and t... | 05/29/2007 |
| 7218430 | Combinatorial optical processor A Combinatorial Optical Processor and method for the architecture of optical systems utilizes one or more optical modules, each module including a number of individually addressable optical elements. The optical elements are arranged and addressed in a combinatorial... | 05/15/2007 |
| 7218429 | Digital focus lens system A digital focus lens systems that can provide an optical system with a plurality of selectable focal powers is described. The system includes a number of switchable elements, each of which is capable of being switched between a first state and a second state, whereb... | 05/15/2007 |
| 7209585 | Picture image generation and printed material production apparatus, and a method thereof A printed material production apparatus comprises: a picture image input section for inputting a picture image string; a picture image conversion section for converting an inputted picture image string inputted into a panoramic picture image; a picture image process... | 04/24/2007 |
| 7190522 | Chemical synthesis using diffraction grating-based encoded optical elements An optical identification element having a synthesized chemical attached thereto includes an optical substrate having at least one diffraction grating disposed therein, the grating having a resultant refractive variation at a grating location, said grating being emb... | 03/13/2007 |
| 7170661 | Hologram recording medium and recording and reproducing system A hologram recording medium is a hologram recording medium which is irradiated with light for recording information therein or reproducing information therefrom. The hologram recording medium has a recording layer made of a photo-sensitive material capable of preser... | 01/30/2007 |
| 7136205 | Volume-phase holographic diffraction grating optimized for the ultraviolet spectral region A volume-phase holographic diffraction grating device is provided that can be optimized for use with very short wavelength light, such as light in the ultraviolet (UV) spectral region. The device comprises a cover and a substrate, both formed of a glass material. A ... | 11/14/2006 |
| 7127138 | Apparatus and method for directing a light beam to a target An apparatus for directing light beams onto a target comprising a beam splitter for splitting a main beam into a first split beam and a second split beam; a first beam path for the first split beam, the first beam path including a first aperture, a first lens and a ... | 10/24/2006 |
| 7126755 | Method and apparatus for labeling using diffraction grating-based encoded optical identification elements A method and apparatus for labeling an item using diffraction grating-based encoded optical identification elements 8 includes an optical substrate 10 having at least one diffraction grating 12 disposed therein. The grating 12 has one or ... | 10/24/2006 |
| 7102802 | Methods for storing holographic data and articles having enhanced data storage lifetime derived therefrom The present invention provides a method for storing holographic data comprising providing an optically transparent substrate comprising a photochemically active dye; irradiating the optically transparent substrate with a holographic interference pattern, wherein the... | 09/05/2006 |
| 7102810 | Method for extra-high speed transformation of time signal into two-dimensional space signal A signal light pulse to be converted into a two-dimensional space signal and a reference ultra-short light pulse are directed to a dispersion device, a second-harmonic is generated by introducing a one-dimensional frequency light distribution obtained by a one-dimen... | 09/05/2006 |
| 7092160 | Method of manufacturing of diffraction grating-based optical identification element A method for manufacturing a diffusion grating-based optical identification element is provided. The optical identification element includes a known fiber substrate, having a diffraction grating disposed therein the grating being indicative of a code when exposed to... | 08/15/2006 |
| 7072086 | Digital focus lens system Digital focus lens systems that can provide an optical system with a plurality of selectable focal powers are described. The systems may include a number of switchable elements, each of which is capable of being switched between a first state and a second state, whe... | 07/04/2006 |
| 7027197 | Pulsed-laser systems and methods for producing holographic stereograms Pre-sensitization techniques can be used in conjunction with holographic recording materials to allow high quality holographic stereograms to be recorded in those holographic recording materials using pulsed lasers. Additional hologram production system hardware and... | 04/11/2006 |
| 7006167 | Fixing structure for an LCD panel An LCD panel fixing structure for fixing and holding an LCD panel has a first holding member, which holds the LCD panel and a second holding member, which holds the LCD panel, the LCD panel being housed, fixed, and held between the first and second holding members, ... | 02/28/2006 |
| 6999397 | Holographic digital data storage system compatible with holographic and reflective medium In a holographic digital data storage system, a light source generates a reference beam, a holographic optical element saves a plurality of interference patterns between the reference beam and a plurality of beams of specific sizes and a beam splitter splits each re... | 02/14/2006 |
| 6965464 | Optical processor Method and apparatus are disclosed for optical packet decoding, waveform generation and wavelength multiplexing/demultiplexing using a programmed holographic structure. A configurable programmed holographic structure is disclosed. A configurable programmed holograph... | 11/15/2005 |
| 6921624 | Optical recording medium Disclosed is an optical recording medium comprising a recording layer. The recording layer contains: a charge generation material generating an electron and a hole by light irradiation; a charge transport material transporting one of the electron and the hole; a cha... | 07/26/2005 |
| 6904201 | Phase-controlled fiber Bragg gratings and manufacturing methods A fiber Bragg grating may be written at an arbitrary wavelength without extensive recalibration or reconfiguration of the writing equipment in some embodiments. A pair of writing beams may be used to expose the fiber. The crossing angles of the writing beams may be ... | 06/07/2005 |
| 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 containing image information with a reference laser beam. In this manner,... | 02/22/2005 |
| 6761999 | Nondegenerate four-wave mixing using photoinduced charge-transfer materials Charge-transfer materials are demonstrated to be useful for generating femtosecond holographic gratings. Using semiconducting polymers sensitized with varying concentrations of C60, absorption holographic gratings with diffraction efficiencies of 1.6% wer... | 07/13/2004 |
| 6710901 | Method and apparatus for two-photon, volumetric spatially resolved holographic data storage in photosensitive glass A method for the generation of volume spatially-resolved holographic data storage within a photosensitive glass sample that incurs changes of optical properties in response to two-photon absorption, the method including directing non-ultraviolet pulsed laser radiati... | 03/23/2004 |
| 6687030 | Method and apparatus for illuminating a display Disclosed is a device for producing colored light and an image generating apparatus including such a device. The device includes a switchable light-directing apparatus configured to receive light and a first control circuit coupled to the switchable light... | 02/03/2004 |
| 6558851 | Optical medium for registration of holographic interferograms This invention relates to the photo-sensitive thermoplastic top-layer of optical media for registration of holograms, where the media consists of three transparent layers where the bottom layer is a glass substrate, the mid layer is an electro-conductive ... | 05/06/2003 |
| 6504629 | Method and apparatus for illuminating a display Disclosed is a device for producing colored light and an image generating apparatus including such a device. The device includes a switchable light-directing apparatus configured to receive light and a first control circuit coupled to the switchable light... | 01/07/2003 |
| 6473208 | Two-color holographic recording apparatus A two-color holographic recording apparatus reduces error signals possibly included in reproduced digital data signals. The two-color holographic recording apparatus has first, second and third light shutters for passing or blocking gate light, signal lig... | 10/29/2002 |
| 6373603 | Image generating system including compensation for chromatic dispersion A system and method for generating a system are disclosed. The system includes a display device comprising a plurality of display regions, each region configured for displaying a color component of the image. A display controller is coupled to the display... | 04/16/2002 |
| 6323970 | Method of producing switchable holograms A method of producing a switchable hologram generally comprises providing a substrate comprised of a liquid crystal material and having two generally opposed surfaces and recording a plurality of holographic fringes composed of liquid crystal droplets in ... | 11/27/2001 |
| 6322932 | Holographic process and media therefor High storage densities using a holographic system are achievable using a stratified medium while maintaining a relatively high selectivity upon reconstruction of the stored images. Such combination of high density and high selectivity is achievable by emp... | 11/27/2001 |
| 6301027 | Holographic desktop monitor A projection monitor and a method of displaying an output image on a viewing screen of the monitor utilize a number of reconfigurable holographic optical elements (HOEs), allowing the components of the monitor to be physically arranged in a compact config... | 10/09/2001 |
| 6175431 | Projection systems based on reconfigurable holographic optics A projection system and a method of displaying a projected input image on a projection screen of the system utilize one or more reconfigurable holographic optical elements (HOEs) to optically manipulate propagating light in the system. The reconfigurable ... | 01/16/2001 |
| 6115151 | Method for producing a multi-layer holographic device A method of making a holographic device comprising sensitizing a plurality of layers and stacking the layers to form a composite structure. Each layer is sensitized to at least one color wavelength. The method further includes directing at least two laser... | 09/05/2000 |
| 6046830 | Dynamic refresh for optical data storage A method for dynamically refreshing a holographic data storage medium wherein data is stored in a plurality of data pages, each of which comprises a two dimensional pattern of pixel data. Each data page is stored by interfacing an image or a Fourier trans... | 04/04/2000 |
| 6040928 | Holographic desktop monitor A projection monitor and a method of displaying an output image on a viewing screen of the monitor utilize a number of reconfigurable holographic optical elements (HOEs), allowing the components of the monitor to be physically arranged in a compact config... | 03/21/2000 |
