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| Number | Title | Issue Date |
| 7999983 | Lens material, optical electronic component and optical electronic device An optical material includes lithium tantalate, and a molar composition ratio of lithium oxide and tantalum oxide (Li2O/Ta2O5) in the lithium tantalate is in the range of 0.975 to 0.982. Since an optical material having a high refrac... | 08/16/2011 |
| 7532372 | Method for creating a holographic screen that reconstructs uniformly magnified three-dimensional images from projected integral photographs A method of producing a holographic screen for reconstruction of uniformly magnified three-dimensional images from projected integral photographs. The screen is produced as an array of holographic imaging elements whose center distances and focal lengths have been s... | 05/12/2009 |
| 7515319 | Lens-less spectrometer A lens-less system for analyzing an optical spectrum includes a sophisticated volume hologram for separating an incident diffuse optical signal into wavelength channels without aid of an external collector lens and a detector for receiving and detecting light disper... | 04/07/2009 |
| 7436561 | Hologram laser unit and optical pickup apparatus A laser light beam of a first wavelength which is polarized in a first polarizing direction, emitted from first and second semiconductor laser elements and reflected by an information recording surface of an optical recording medium, is made to be transmitted by a s... | 10/14/2008 |
| 7418170 | Optical device and virtual image display device A virtual image display device is provided which displays a two-dimensional image for viewing a virtual image in a magnified form by a virtual optical system. The virtual image display device includes an optical waveguide (13) to guide, by internal total refl... | 08/26/2008 |
| 7388696 | Diffuser, wavefront source, wavefront sensor and projection exposure apparatus A wavefront source having a wavefront formation structure (4a) and a diffuser with a scattering structure (2b) in the beam path in front of or at the level of the wavefront formation structure; also a diffuser configured to be used theref... | 06/17/2008 |
| 7369726 | Optical communication between face-to-face semiconductor chips One embodiment of the present invention provides a system that communicates between a first semiconductor die and a second semiconductor die through optical signaling. During operation, the system converts an electrical signal into an optical signal using an electri... | 05/06/2008 |
| 7355768 | Wavelength tunable holographic filter with broad acceptance angle and narrow spectral bandwidth A narrowband, tunable filter with a wide acceptance angle utilizes two holographic filter elements connected in series. The filter blocks light outside of a narrow spectral band of interest, while enabling light to be seen over a wide range of angles incident on the... | 04/08/2008 |
| 7343069 | Optical element and system using the same An optical element may include a first diffractive structure having a radially symmetric amplitude function and a second diffractive structure having a phase function. The second diffractive structure may serve as a vortex lens. A system employing the optical elemen... | 03/11/2008 |
| 7321466 | High dispersion diffraction grating including multiple holographic optical elements A diffraction grating having multiple holographic optical elements (HOEs), including a Dickson grating and at least one other volume phase grating (VPG). In typical embodiments, the multi-HOE grating is implemented to provide high dispersion, at least substantially ... | 01/22/2008 |
| 7317417 | Methods for detection and tracking of targets The present invention relates to active sensor applications, and more particularly is directed to efficient systems and methods for detection and tracking of one or more targets. The invention provides a method for receiving signals reflected from one or more target... | 01/08/2008 |
| 7298535 | Digital situation indicator A personal monitoring system to be worn by an individual in a hazardous situation comprises an enclosed face mask which includes a transparent shield over at least the eves a sensor module secured to the individual which includes a plurality of sensors, a microproce... | 11/20/2007 |
| 7298553 | Element for the combined symmetrization and homogenization of a bundle of beams The invention relates to an element for the combined symmetrization and homogenization of a beam of rays and to a method for designing an element of this type. One object of this invention is to propose an element and a corresponding design method by means of which ... | 11/20/2007 |
| 7289400 | Optical disc drive having a movable aberration correcting lens An optical disc drive includes an optical head having a stationary portion and a movable portion. The movable portion supports an objective lens for converging a beam emitted from the stationary portion on an optical disc. The movable portion moves radially across a... | 10/30/2007 |
| 7286285 | Surgical microscope having an object field illumination system The invention concerns a surgical microscope (2, 3, 5) having a novel laser illumination system (11) and, in a preferred embodiment, an arrangement in which a diffractive element (7) produces an additional illuminating beam and a measurement bea... | 10/23/2007 |
| 7286197 | Liquid crystal display having high brightness and enhanced viewing angle A liquid crystal display (LCD) realizes a high brightness by using cholesteric liquid crystal (CLC) in a color filter and a polarizer, and improves viewing angles by using a hologram diffuser. The LCD includes a back light unit to produce and supply light, and a col... | 10/23/2007 |
| 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 laser beam, a focusing lens unit having a multi-focal lens which splits t... | 08/28/2007 |
| 7261421 | Optical projector and image display apparatus using the same Image disturbance called speckle noise occurs when an image generator has a small effective screen size and a projection lens has a small effective diameter. The present invention is intended to reduce speckle noise. In an optical projector, a viewing angle enlargin... | 08/28/2007 |
| 7262914 | Method and apparatus for generating and detecting duality modulated electromagnetic radiation A generator of duality modulated radiation, of which the irradiance, the wave intensity, or both, are varied from ordinarily equivalent levels, either for purposes of providing energy depleted or energy enriched radiation or for purpose of encoding an information si... | 08/28/2007 |
| 7260047 | Optical pickup that uses light sources with different wavelengths for each of multiple recording mediums An optical pickup includes: a first projector for projecting a first light beam of a first wavelength so as to record and reproduce information with respect to an optical disk having a first light transmissive layer; a second projector for projecting a second light ... | 08/21/2007 |
| 7226185 | Illumination system with alignment mechanism and method An illumination system including a plurality of light source modules each including a light-emitting surface and a dome lens, an illumination target and at least one optical device disposed between at least one of the light source modules and the illumination target... | 06/05/2007 |
| 7227688 | Apparatus for applying optical gradient forces An apparatus and method for manipulating small dielectric particles. The apparatus and method involves use of a diffractive optical element which receives a laser beam and forms a plurality of light beams. These light beams are operated on by a telescope lens system... | 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 |
| 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 |
| 7212323 | Methods and apparatus for mass manufacturing two-dimensional binary information on transparent substrates using phase contrast modulated templates Methods and apparatus for making, encoding, and encrypting binary patterns for storing recorded information. One of the methods includes the steps of providing an original image, fragmenting the original image into at least two parts including a first part and a sec... | 05/01/2007 |
| 7209269 | Displaying holographic three dimensional images Holographic three dimensional images of objects can be displayed via a device comprising micro holographic optical elements (MHOEs). A device for displaying holographic three dimensional images of objects can comprise a laser source, a spatial filter using a micro h... | 04/24/2007 |
| 7183640 | Method and structures for enhanced temperature control of high power components on multilayer LTCC and LTCC-M boards A multilayer ceramic circuit board comprises a core of high conductivity material such as metal and an overlying layer of electrically insulating ceramic having an outer surface. In accordance with the invention, a circuit board for receiving a high power component ... | 02/27/2007 |
| 7180668 | Optical pickup device and optical disc device This invention is an optical pickup device having a composite optical element (32) which has a first diffraction grating (45) for splitting a light beam emitted from a light source (31) into zeroth-order light, plus-first-order light and minus-f... | 02/20/2007 |
| 7180669 | Method and system for generating substantially uniform speckle patterns A diffractive optical element is positioned in an optical path between a coherent light source and a surface. The diffractive optical element is designed to disperse the light across one or more spots on the surface in a manner designed to create speckle patterns ha... | 02/20/2007 |
| 7177550 | On-axis laser receiver wavelength demultiplexer with integral immersion lensed detectors The present invention is directed to a laser communication receiver for wireless optical communication. A laser communication receiver includes a diffractive optical element to permit detectors at different spatial locations to detect different wavelengths of the op... | 02/13/2007 |
| 7171827 | System and method for automated casting of infrared glass optical components In accordance with the present invention, a system and method for the automated casting of infrared glass optical components is provided. The system includes a mold for casting infrared glass into lenses, a mold chamber operable to heat the mold to a temperature abo... | 02/06/2007 |
| 7161131 | Multiple wavelength quadrant detection A quadrant detector includes a holographic optical element and a plurality of detector elements. The holographic optical element is designated to have four quadrants, each of which directs radiation incident thereon to an associated detector element. Signals from th... | 01/09/2007 |
| 7159419 | System and method for vapor pressure controlled growth of infrared chalcogenide glasses A system and method for preparing chalcogenide glass are provided that allow for larger quantities of glass to be produced with lower production costs and less risks of environmental hazards. The system includes a reaction container operable to hold chalcogenide gla... | 01/09/2007 |
| 7159420 | System and method for forming infrared glass optical components A system and method for forming infrared glass optical components are provided. The system includes first and second mold halves having first and second respective faces. The first and second mold halves are configured to be removably coupled such that the first fac... | 01/09/2007 |
| 7142484 | Optical information processing system using optical aberrations and information medium having recording layer protected by transparent layer having thickness irregularity A thickness servo system using optical aberrations is provided. In this servo system, a photodetector detects an aberration amount corresponding to thickness irregularity, and a thickness irregularity correction section operates to minimize the detected aberration a... | 11/28/2006 |
| 7133172 | Variable hologram element, and optical device using the same The invention relates to an optical element with variable optical properties, which ensures that the amount of light available is increased, and an optical device using the same. In a liquid crystal variable hologram element 3, polymer layers 18 and li... | 11/07/2006 |
| 7126730 | Electro-holographic lens An electro-holographic lens device comprising: an active layer made from a transparent photo-refractive material, whose refractive index may be locally modified by locally applying an electric field; an array of electrodes in a predetermined density, provided adjace... | 10/24/2006 |
| 7120109 | Optical pickup with improved collimating lens for use with long and short wavelength laser beams An optical pickup capable of effectively reducing chromatic aberration that includes a collimating lens, which includes a diverging lens with diverging power and a focusing lens with focusing power, arranged on the optical path between a light source and an objectiv... | 10/10/2006 |
| 7106681 | Optical head arrangements with single substrate lasers An optical head with a plurality of semi-conductor laser chips for use in reducing inclination or gradient of more than one beam presently falling onto a focusing lens is disclosed. To this end, a double mirror or alternatively beam reshaping means is disposed which... | 09/12/2006 |
| 7099057 | In-line holographic mask for micromachining A method of fabricating a holographic mask includes the steps of providing an illumination source and a non-opaque object mask. The source is for generating a coherent illumination beam directed along an axis. The object mask is capable of transmitting a portion of ... | 08/29/2006 |
