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| Number | Title | Issue Date |
| 8054669 | Non-volatile programmable optical element employing F-centers A non-volatile programmable electro-optical element alters absorption characteristics of an optical medium that comprises a doped transition metal oxide material including F-centers. The F-centers are electrostatically moved into or out of the regions containing a w... | 11/08/2011 |
| 7260127 | Dual layer color-center patterned light source A thin layer of ionic crystal is grown on a substrate. The crystal could be any type of ionic crystal, such as sodium chloride or potassium chloride. The crystal is a pure form of the chosen compound and may contain contaminants which would shift the wavelength of c... | 08/21/2007 |
| 7245366 | Surface inspection method and surface inspection apparatus A surface inspection apparatus includes an LD (10 for emitting a laser beam (L0), an irradiation optical system for entering the emitted laser beam (L0) onto an inspection surface (210) of a wafer at predetermined depression angle (α), a... | 07/17/2007 |
| 7235195 | Method for making opthalmic devices The present invention provides a method for producing an ophthalmic device by means of stereolithography. The method comprises the steps of: depositing (i) an essentially solvent-free liquid or melt of a device-forming material, or (ii) a solution of said device-for... | 06/26/2007 |
| 7233739 | Optical bit stream reader system An all optical fiber bit stream reader system for examining the data contents of an optical fiber involving the conversion of a temporal timing signal into a spatially located signal is provided. The invention generally comprises generating and detecting a signal in... | 06/19/2007 |
| 7193879 | Techniques for multiple frequency chirp readout of material with inhomogeneously broadened absorption spectrum Techniques for reading the spectral content of a spatial-spectral grating in an inhomogeneously broadened transition (IBT) material include directing multiple probe waveforms to probe a spatial mode of the IBT material. Each probe waveform is a linear frequency modu... | 03/20/2007 |
| 7133734 | Method for creating a sculpture A method for sculpting art including preparing an artistic line drawing of interconnected lines having varying widths. The artistic line drawing is converted to a format suitable for computer numeric controls for guiding cutting means. The sculpture is cut out of a ... | 11/07/2006 |
| 7046271 | Method and system for the three-dimensional representation A method for three-dimensional display in which a plurality of individual image elements αij are made visible simultaneously in a raster of columns i and lines j, wherein the image elements αij reproduce partial information from a plurality o... | 05/16/2006 |
| 7023887 | Method and system for controlling optical wavelength based on optical frequency pulling Optical wavelength control method and apparatus which are capable of controlling an optical wavelength of a light source with a central wavelength which is uncertain and unstable at nanometer order is disclosed. In the optical wavelength control apparatus, the contr... | 04/04/2006 |
| 6961296 | Spatially-spectrally swept optical memories and addressing methods An optical data storage system directs a reference beam and a data beam to a storage material having an inhomogeneous linewidth. The data beam is modulated to contain data to be stored in the storage material. The reference beam and the data beam illuminate storage ... | 11/01/2005 |
| 6937379 | Molecular architecture for molecular electro-optical transistor and switch Observable changes in electrical and optical characteristics of individual molecules adsorbed on a conductor or semi-conductor caused by electrical and/or optical excitation or de-excitation of electrons within such molecules can be used as signals which in turn can... | 08/30/2005 |
| 6931294 | Method for generating three-dimensional CAD models of complex products or systems A process for generating one or more three-dimensional computer CAD solid models for a complex product. The process includes evaluating the complex product, and selecting one or more three-dimensional modeling methods for the components of the complex product based ... | 08/16/2005 |
| 6914921 | Optical filter, laser module, and wavelength locker module On a second thermo-module there are disposed a prism, an optical filter, and a sub-mount, via a base respectively. On the front side of the sub-mount, there are disposed a first photodetector and a second photodetector. The optical filter is structured with a crysta... | 07/05/2005 |
| 6909732 | Method and apparatus for controlling optical wavelength based on optical frequency pulling Optical wavelength control method and apparatus which are capable of controlling an optical wavelength of a light source with a central wavelength which is uncertain and unstable at nanometer order is disclosed. In the optical wavelength control apparatus, the contr... | 06/21/2005 |
| 6850092 | Low latency FIFO circuits for mixed asynchronous and synchronous systems A FIFO design interfaces a sender subsystem and a receiver subsystem operating on different time domains. The sender subsystem and the receiver subsystem may be synchronous or asynchronous. The FIFO circuit includes a put interface configured to operate in accordanc... | 02/01/2005 |
| 6770524 | Method to enhance performance of thermal resistor device An apparatus including a contact on a substrate, a dielectric material overlying the contact, a phase change element overlying the dielectric material on a substrate, and a heater element disposed in the dielectric material and coupled to the contact and the phase c... | 08/03/2004 |
| 6747145 | Photochromic bis-naphthopyran compounds and methods for their manufacture The invention provides photochromic bis-naphthopyran compounds as well as methods for their manufacture and their use. The bis-naphthopyran compounds of the invention exhibit a wide range of color, i.e., from pink to purple to blue gray, upon activation by a source ... | 06/08/2004 |
| 6680860 | Optical coherent transient continuously programmed continuous processor Techniques for continuously programming a coherent transient spatial-spectral optical signal processor involve the repeated application of two or more spatially distinct optical programming pulses to a non-persistent hole-burning material to write an accu... | 01/20/2004 |
| 6608774 | Two-photon four-dimensional optical memory Selected domains, normally 2×103×2×10.sup.3 such domains arrayed in a plane, within a three-dimensional (3-D) volume of radiation-sensitive medium, typically 1 cm3 of spirobenzopyran containing 2×103 such planes, are t... | 08/19/2003 |
| 6528234 | II-VI compounds as a medium for optical data storage through fast persistent high density spectral holeburning High density, photon-gated persistent spectral holeburning is effectuated in rare earth doped II-VI compounds such as MgS, CaS, BaS and SrS. Two-photon ionization of rare earth ions is performed, selected by a narrow band laser, producing narrow regions o... | 03/04/2003 |
| 6514435 | High density and fast persistent spectral holeburning in II-VI compounds for optical data storage High density, photon-gated persistent spectral holeburning is effectuated in rare earth doped II-VI compounds such as MgS, CaS, BaS and SrS. Two-photon ionization of rare earth ions is performed, selected by a narrow band laser, producing narrow regions o... | 02/04/2003 |
| 6483735 | Two-photon, three-or four-dimensional, color radiation memory Three-, and four-dimensional ("3-D" and "4-D") volume radiation memories store multiple binary bits of information--typically about five to ten and more typically eight such bits--in the same physical volumes on several different photochromic chemicals co... | 11/19/2002 |
| 6407831 | Coherent interaction of optical radiation beams with optical-electronic materials of generalized crystal symmetry A method for optimizing the interaction of a resonant material having generalized crystal symmetry with a beam or beams of radiation. The invention includes determining a special direction relative to the axes of crystal symmetry of the material and polar... | 06/18/2002 |
| 6280904 | Photo-chemical generation of stable fluorescent derivatives of rhodamine B The present invention relates to the field of optical recording materials, in particular, fluorescent compounds and matrices suitable for use in optical memory systems, including three dimensional optical memory systems for READ ONLY MEMORY (ROM). In part... | 08/28/2001 |
| 6067246 | Method for writing data to and reading multiple bit data words from a DNA optical storage device An optical memory system includes memory cells which utilize synthetic DNA as a component of the information storage mechanism. In the preferred embodiment, memory cells contain one or more chromophoric memory units attached to a support substrate. Each c... | 05/23/2000 |
| 6027855 | Photo-chemical generation of stable fluorescent derivatives of Rhodamine B The present invention relates to the field of optical recording materials, in particular, fluorescent compounds and matrices suitable for use in optical memory systems, including three dimensional optical memory systems for READ ONLY MEMORY (ROM). In part... | 02/22/2000 |
| 5849403 | Organic thin film device Disclosed is an organic thin film device having an organic thin film consisting of a mixed-stacked charge-transfer complex, wherein the organic thin film contains n species of donor molecule D1 . . . Dn and m species of acceptor mole... | 12/15/1998 |
| 5835404 | DNA optical storage device utilizing non-radiative energy transfer An optical memory system includes memory cells which utilize synthetic DNA as a component of the information storage mechanism. In the preferred embodiment, memory cells contain one or more chromophoric memory units attached to a support substrate. Each c... | 11/10/1998 |
| 5812318 | Apparatus and methods for routing of optical beams via time-domain spatial-spectral filtering Apparatus and methods are disclosed for spatially routing an optical pulse (data pulse) of an electromagnetic radiation and containing a specific address temporal profile and possibly additional data. Routing generally involves a unit of active material t... | 09/22/1998 |
| 5636195 | Optical recording method and reproducing method and recording apparatus and reproducing apparatus utilizing stimulated photon echo The recording method and apparatus according to this invention is an "optical recording method utilizing a simulated photon echo" in which information is recorded by irradiating data a.d record excitation lights at the same time or at different times on t... | 06/03/1997 |
| 5581499 | Micro information storage system A device for optically storing and retrieving information incorporating a cadmium fluoride crystal. Using focused ionizing radiation, patterns can be formed in the crystal by the creation of color centers and/or intrinsic luminescence quenched areas. The ... | 12/03/1996 |
| 5568460 | Optical recording and/or reproducing apparatus and method utilizing stimulated photon echo The recording method and apparatus according to this invention is an "optical recording method utilizing a simulated photon echo" in which information is recorded by irradiating data and record excitation lights at the same time or at different times on t... | 10/22/1996 |
| 5438561 | Method for recording and reproducing information using an optical memory A method for recording and reproducing information using an optical memory device being constituted by a transparent substrate, a recording film formed on the substrate and made of a resin containing a photochromic material dispersed therein, the photochr... | 08/01/1995 |
| 5424974 | Optoelectric memories with photoconductive thin films Methods and apparatii are described for information storage in photoconductive film of single layer composition by irradiation of memory elements simultaneously with application of an electric field. Information is stored as trapped charge accumulations i... | 06/13/1995 |
| 5371698 | Random access optical memory The multi-dimensional optical memory utilizes the wavelength and intensity dimensions to effect a high density record. With incorporation of a broadband light source, scanning monochromator and photo detector array, a high speed random access optical memo... | 12/06/1994 |
| 5369665 | Coherent time-domain data storage with spread-spectrum data pulse A method and apparatus for coherent time-domain optical data storage utilizing a randomizing phase modulation to increase storage capacity. A laser (10) generates write. read, and data pulses which are applied to an acousto-optic modulator (11), which mod... | 11/29/1994 |
| 5339201 | Optical computing element The invention relates to an optical computing element for use in an optical computer utilizing computing light rays having a plurality of wavelength components. The optical computing element comprises a photo-chemical hole burning element which functions ... | 08/16/1994 |
| 5327373 | Optoelectronic memories with photoconductive thin films Methods and apparatii are described for information storage in photoconductive film of single layer composition by irradiation of memory elements simultaneously with application of an electric field. Information is stored as trapped charge accumulations i... | 07/05/1994 |
| 5325324 | Three-dimensional optical memory Selected domains, normally 103 ×103 such domains arrayed in a plane, within a three-dimensional (3-D) volume of active medium, typically 1 cm3 of spirobenzopyran containing 102 such planes, are temporally and s... | 06/28/1994 |
| 5317453 | Optical computer element The invention relates to an optical computing element for use in an optical computer utilizing computing light rays having a plurality of wavelength components. The optical computing element comprises a photo-chemical hole burning element which functions ... | 05/31/1994 |
