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7616618 |
Code cycle modulation in optical code division multiple access systems
An optical code division multiple access (OCDMA) system includes an optical transmitter system configured to transmit data from a plurality of users through a shared optical channel by encoding the...
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7557970 |
Hologram recording method, hologram recording device, hologram playback method, and optical recording medium
A hologram recording method, which records signal light onto an optical recording medium as a hologram, includes: placing a signal light region, which generates signal light, and a reference light...
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7554732 |
Wavefront coded imaging systems
A singlet imaging system for imaging an object onto a detector includes a lens configured for producing transverse ray intercept curves which are substantially straight, sloped lines. A wavefront...
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7554706 |
Holographic recording method, apparatus therefor, and holographic recording and reproducing apparatus
A holographic recording method and apparatus capable of performing phase code multiplex recording without employing a phase spatial light modulator. The holographic recording apparatus 10 ...
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7548358 |
Phase conjugate reconstruction of a hologram
Methods and systems are provided for obtaining a phase conjugate reconstruction beam for use in retrieving holographic information from a holographic storage medium. These methods and systems...
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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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7511725 |
Apparatus and method for providing a three-dimensional moving image from a non-fixed pixel display
Embodiments of the invention provide a system and method for providing a three-dimensional moving image from a non-fixed pixel display. In one embodiment, a display having a plurality of pixels is...
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7492691 |
Supplemental memory having media directory
Disclosed is a holographic data storage device including holographic media for containing data, writing data to and reading data from. The storage device also includes at least one supplemental...
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7492501 |
Optical element
A complex amplitude type spatial optical modulation element, with which the amount of generation of 0th-order diffraction light is low. An optical element is arranged by aligning a plurality of...
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7482573 |
Optical head, optical reproduction apparatus and optical record and reproduction apparatus
Beams of light emitted from a light source are incident on a polarizer. The direction of a transmission axis of the polarizer can be adjusted in advance such that the polarizer transmits P...
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7477588 |
Apparatus for and method of recording and reproducing holograms
The number M of a plurality of multiplexed recording mediums to be recorded in a projected area S on the surface of a recording medium satisfies the equation (1′) where n represents the...
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7469058 |
Method and system for a maskless lithography rasterization technique based on global optimization
Provided are a method and system for determining states of spatial light modulator (SLM) pixels in a lithography system configured to print a desired pattern. The method includes determining...
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7421414 |
Split machine learning systems
Split machine learning systems can be used to generate an output for an input. When the input is received, a determination is made as to whether the input is within a first, second, or third range...
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7411708 |
Method and apparatus for phase-encoded homogenized Fourier transform holographic data storage and recovery
An apparatus for writing and reading holograms, comprising a spatial light modulator (SLM) operable in phase mode, having a plurality of pixels for generating an object beam that overlaps with a...
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7385741 |
Holographic recording system and optical chopper
A holographic recording system with a simple structure is provided that can make a holographic recording beam follow a recording medium traveling even at high speed. The holographic recording...
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7362482 |
Inline type speckle multiplexed hologram recording apparatus and inline type speckle multiplexed hologram recording method
An inline type speckle multiplexed hologram recording apparatus and method is disclosed which can condense signal light and reference light in a sufficiently overlapping relationship with each...
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7324255 |
Spatial optical modulator
A spatial light modulator, in which light modulation elements are arranged in a same plane. In the spatial light modulator, a plurality of the light modulation elements are arranged such that there...
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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...
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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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7289253 |
System and methods for shearless hologram acquisition
Systems and methods for shearless digital hologram acquisition, including an apparatus incorporating an illumination source configured to produce a first beam of light, which is then split by a...
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7274432 |
Radiation system, lithographic apparatus, device manufacturing method, and device manufactured thereby
A radiation system for multiplexing radiation includes two radiation sub-sources. The sub-sources each provide a certain amount of radiation. The system further includes a member with reflecting...
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7254106 |
Method and equipment for storing holographic data
A method for storing holographic data in a medium having a reflection layer and a recording layer comprises: recording, rotating and repeating. An interference pattern is recorded at a recording...
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7202919 |
Holographic data storage with PDLC spatial light modulator generating reference and object beams
The invention is directed to a holographic data storage system including a spatial light modulator device (SLM) that comprises optical elements in the form of polymer dispersed liquid crystal...
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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...
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7184183 |
Hologram recording/reproducing apparatus and hologram recording/reproducing method
This invention provides a hologram recording apparatus for recording an interference fringe, generated by interference of a first light beam subjected to spatial light modulation by recording data...
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7172288 |
Display device including a spatial light modulator with plural image regions
A display device includes a spatial light modulator and a light generator. The spatial light modulator may have an array of modulating elements with a plurality of image regions. The light...
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7154646 |
Optical recording apparatus and optical recording/reproducing apparatus
An optical recording/reproducing apparatus having excellent resistance against vibration and noise. In recording, coherent light is polarization-modulated with a spatial light modulator to generate...
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7154645 |
Holographic recording method and apparatus
A holographic recording method and a holographic recording apparatus capable of selectively rewriting or erasing only desired data without degrading data other than the desired data are provided....
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7145710 |
Optical processing
To operate an optical device comprising an SLM with a two-dimensional array of controllable phase-modulating elements groups of individual phase-modulating elements are delineated, and control data...
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7130092 |
Apparatus and method for recording and reproducing optical information
An optical information recording/reproducing apparatus generates information light by modulating light emitted by a light source device with a light modulator depending on the information to be...
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7106510 |
Wavefront coded imaging systems
The present invention provides improved Wavefront Coding imaging apparatus and methods composed of optics, a detector, and processing of the detected image. The optics are constructed and arranged...
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7088482 |
Holographic recording techniques using first and second portions of a spatial light modulator
The invention is directed to holographic recording techniques that generate a data encoded object beam and a reference beam using a spatial light modulator of the holographic recording system. An...
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7088481 |
Holographic recording techniques using reference zone of spatial light modulator
The invention is directed to holographic recording techniques that generate a data encoded object beam and a reference beam using a spatial light modulator of the holographic recording system. An...
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7085025 |
Apparatus for recording optical information
Optical information is stored in an optical information recording medium having an information recording layer utilizing holography with an optical information recording apparatus which includes...
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7081977 |
Angular multiplexing apparatus for holographic storage medium
An angular multiplexing apparatus for a holographic storage medium. The angular multiplexing apparatus includes a reconstructing reference beam generator, translated in parallel to a number of...
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7064875 |
Optical recording apparatus and optical recording/reproducing apparatus
An optical recording/reproducing apparatus having excellent resistance against vibration and noise is provided. In recording, coherent light is polarization-modulated with a spatial light modulator...
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7042643 |
Interferometric modulation of radiation
An Interferometric Modulator (IMod) is a microelectromechanical device for modulating light using interference. The colors of these devices may be determined in a spatial fashion, and their...
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7035006 |
Screen for image display apparatus, method for manufacturing screen for image display apparatus, and image display apparatus
A screen for image display apparatus according to the present invention has a base member, a light absorption layer formed on the base member and adapted for absorbing light of a visible light...
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7012722 |
Holographic recording apparatus
A holographic recording apparatus which can stably record data to be recorded onto a recording medium. The holographic recording apparatus of the present invention includes: a light source for...
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6995882 |
Apparatus for recording optical information
The present invention makes it possible to reduce the size of an optical system for multiplex recording or reproduction of information utilizing holography. A pick-up ( 11 ) of an optical...
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6987592 |
Spatial light modulator and holographic recording/reproducing apparatus
A spatial light modulator (SLM) 101 has a multiplicity of pixels 101 a arranged in a lattice form for selecting a transmission state (on) and a blocking state (off) of light on each pixel...
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6980337 |
Apparatus and method for recording digital data on a holographic storage system
A holographic apparatus includes a mask for modulating a signal beam to generate a modulated signal beam; a conical prism, which has a cone portion and a base portion, for refracting a reference...
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6943924 |
Apparatus and method for digital holographic imaging
The present invention is related to a method for performing digital holographic imaging (DHI), said DHI being characterized by the fact that images of a sample are obtained by applying numerical...
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6940653 |
Radiation conditioning system
A holographic imaging system and method includes a radiation source for generating radiation. A data base has a set of elements, each element is indicative of a trajectory of a light ray exiting a...
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6934074 |
Optical element and manufacturing method thereof
An optical element has of a set a plurality of three-dimensional cells. A specific amplitude and a specific phase are defined in each individual cell. Each cell has a concave part formed by...
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6900914 |
Optical information recording and reproducing apparatus having volume holographic memory
A description is provided of an optical information recording and reproducing apparatus having a volume holographic memory. The apparatus is capable of recording an interference pattern in the...
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6873444 |
Volume holograms in transparent materials
This invention discloses a method of producing, in a solid transparent material ( 3 ), a hologram of an object; the method includes the steps of: developing a three-dimensional mathematical model...
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6862121 |
Method and apparatus for holographic recording of fast phenomena
Holographic methods for recording fast movies whose speed is limited by the laser pulse duration if the recording material has sufficient sensitivity to reliably record a frame of the fast event...
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6862120 |
Hologram recording medium, hologram recording method and hologram recording and reproducing apparatus
In a hologram recording method for forming a plurality of areas of a refractive index light interference pattern of a coherent signal light beam in accordance with information data within a...
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