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7362523 |
Method for producing holographic recording medium
A method for producing a holographic recording medium having a holographic recording layer between a first substrate and a second substrate including the steps of: providing a holographic recording...
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7339710 |
Holographic recording medium, holographic reading system, and data reading method from the holographic recording medium
A holographic disc recording medium records a hologram over the entire holographic disc recording medium by using a conical reference beam for recording. A hologram recorded image includes recorded...
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7307767 |
Methods for calculating multilayer holograms, method for producing multilayer holograms and storage medium comprising a multilayer hologram
A method for the calculation and storage of a computer-generated multilayer hologram with more than or equal to 2 holograms includes the following steps. Field A O of a readout beam and field A R ...
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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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7298534 |
Off-axis holographic light concentrator and method of use thereof
A light receiving apparatus comprises a holographic optical device having a plurality of holograms recorded in a light receiving surface thereof. The holographic optical device is configured to dif...
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7298532 |
Single beam write and/or replay of spatial heterodyne holograms
A method of writing a spatially heterodyne hologram having spatially heterodyne fringes includes: passing a single write beam through a spatial light modulator that digitally modulates said single ...
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7290803 |
Reflective article and method of manufacturing same
A reflective printed article includes a substrate having a top surface and a bottom surface with a graphic image printed thereon. A reflective or glossy ink layer is printed over the entire top sur...
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7286291 |
Show-through security packaging system for digital media
A system of visual authentication of digital media. A visual means is provided at the point of purchase for a user to verify that the source of software is genuine. An authentication image is embed...
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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 ...
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7259897 |
System, method and apparatus for direct imaging in ultrasonic holography
An acoustical holographic imaging method and apparatus for introducing a reference wave into a hologram surface such that the reference wave does not interfere with an object placed adjacent to or ...
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7251077 |
Diffuse reflector and method
A diffuse reflector comprises a substrate ( 20 ) having an asymmetric, reflective, periodic surface relief microstructure formed such that, under illumination by a multiplicity of wavelengths in a ...
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7230746 |
3D display
A method of generating a Computer Generated Hologram (CGH) using the diffraction specific algorithm allows a curved wavefront to be produced from a single hogel, rather than the planar waves of the...
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7227530 |
Assembly of independent mouse or track ball device using keyboard as an operational relay with keyboard
An independent mouse or trackball device assembly uses a keyboard as an operational relay providing for the wired or wireless coupling of the mouse or trackball device to the keyboard assembly.
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7209270 |
Method and apparatus for phase correlation holographic drive
A holographic storage apparatus for recording data in a holographic medium includes at least one light source for generating a reference beam and a signal beam. The reference beam is preferably a p...
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7197160 |
Geographic information systems using digital watermarks
The present invention relates to systems and methods for managing images and related information. In one implementation, geographic information system (GIS) layer information is registered or align...
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7151623 |
Holographic data-storage medium
In an example holographic data storage medium, which has a polymer film which serves as a storage layer and can be changed locally by heating, the polymer film is set up as a top layer of the data ...
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7149014 |
Holographic memory using beam steering
A method, apparatus, and system provide the ability for storing holograms at high speed. A single laser diode emits a collimated laser beam to both write to and read from a photorefractice crystal....
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7148468 |
Mirror angle measurement and servo control apparatus for holographic digital data storage system
A mirror angle measurement and a servo control apparatus for a Holographic Digital Data Storage (HDDS) system is disclosed. The mirror angle measurement apparatus includes a first mirror having a f...
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7142336 |
Recording medium and hologram reader
A recording medium including a storage part to hold a medium identifier intrinsic to each recording medium, and a hologram generated using a reference beam modulated with the medium identifier. Pre...
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7136206 |
Method and apparatus for implementing a multi-channel tunable filter
The present invention provides a multi-channel tunable filter and methods for making such a filter. In one embodiment, the filter comprises a bank of gratings imprinted into a filter material, such...
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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 fiel...
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7112359 |
Method and apparatus for multilayer optical articles
The present invention provides a method and apparatus for a multilayer optical articles. A method comprises forming a first multilayer article with a first substrate and a second substrate with a f...
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7102803 |
Apparatus and method of using a thermal design for wavelength division multiplexed holographic filters
A temperature compensated apparatus for filtering light is comprised of a holographically recorded grating defined in a photosensitive layer for providing optical filtration for light incident on t...
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7094502 |
Methods for transferring holographic images into metal surfaces
A method for impressing holographic images or holograms in the surface of metal objects such as aluminum cans, sheet metal or metal foil. The surfaces of metal shims and print rolls bearing hologra...
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7072538 |
Planar reconfigurable optical add/drop module
A reconfigurable optical add/drop module (ROADM) for dynamically adding or dropping various wavelengths of an optical signal without having to physically replace the module with a wavelength-specif...
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7072114 |
Optical pickup using an optical phase plate and which is compatible with optical recording media of different types
An optical pickup apparatus having laser light sources emit a first light beam having a relatively shorter wavelength for a DVD and a second light beam having a longer wavelength for a CD-R, an obj...
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7048689 |
Ultrasonic receiving apparatus and ultrasonic receiving method
To reduce the cost while maintaining the real time environment in receiving ultrasonic waves in an ultrasonic receiving apparatus which is capable of reducing changes in detection sensitivity due t...
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7034970 |
Optical recording medium and method for producing such an optical recording medium
The present invention relates to a method for producing an optical recording medium. In the method, on the surface of a recording layer formed by spin-coating a first coating solution containing a ...
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7023592 |
Band-pass filter and image display apparatus
A band-pass filter has a reflecting optical element having a fixed reflection angle selection region for wavelengths of a given region, and has an optical path such that reflection is performed at ...
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6995883 |
Security document with an optical security area
A security document, such as a banknote, includes an optical security area having a first periodic optical structure and a security sign provided on the security area and configured to circumscribe...
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6987591 |
Volume hologram
A volume hologram for modifying a characteristic of an input microwave beam and a method for manufacturing thereof are disclosed. The hologram is fabricated from a multi-layer artificial dielectric...
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6985293 |
Optical pickup using an optical phase plate and which is compatible with optical media for different types
An optical pickup apparatus having laser light sources emit a first light beam having a relatively shorter wavelength for a DVD and a second light beam having a longer wavelength for a CD-R, an obj...
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6967755 |
Holographic ROM system including an alignment apparatus for aligning a holographic medium and a mask
A holographic ROM system includes an alignment apparatus for aligning a holographic medium for storing data and a mask with patterns of the data. The alignment apparatus has a beam irradiating unit...
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6961161 |
Holographic recording and reproducing apparatus
An image detected by a CCD image sensor 108 when only a non-modulated signal light is applied to a holographic memory 120 in which data is not recorded is ensured as a noise pattern. When data ...
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6961160 |
Recording material for holograms, manufacturing method thereof, recording medium for holograms, hologram recording method and hologram reproduction method
A recording material for holograms includes a metal oxide porous body with an oxygen donor substance in the pores. In addition, a method manufactures a recording material for holograms that include...
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6961159 |
Holographic viewing device, and computer-generated hologram for the same
The invention relates to a holographic viewing device that enables a given pattern to be properly viewed in place of light sources in a scene and is easy to fabricate and assemble with consistent c...
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6958836 |
Hologram carrier
The invention relates to a hologram carrier having a hologram surface and a reference surface to facilitate the acquisition of the hologram surface by a device. In this case, provision is made for ...
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6956681 |
Integrated reading and writing of a hologram with a rotated reference beam polarization
A method for monitoring diffraction while recording a hologram includes: generating a source beam; generating a data beam by projecting a first component of the source beam through a data source, t...
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6952295 |
Hologram screen and hologram display
A hologram screen 1 displays an image by diffracting and scattering image light 31 projected from an image projection apparatus 2 . An upward/downward light scattering device 13 , which scatt...
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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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6924912 |
Holographic screen
A holographic screen for displaying images by diffracting and dispersing an image beam projected by an image projector comprises a main hologram for diffracting and dispersing an incident image bea...
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6909529 |
Method and apparatus for phase correlation holographic drive
A holographic storage apparatus for recording data in a holographic medium includes at least one light source for generating a reference beam and a signal beam. The reference beam is preferably a p...
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6900904 |
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 acquisitio...
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6894815 |
Reference beam absorbers-blockers
In accordance with teachings of the present invention, a device accomplishes the task of reducing or preventing reflections of the reference beam off a diffuser from striking the holographic record...
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6870649 |
Holographic viewing device, and computer-generated hologram for the same
The invention relates to a holographic viewing device that enables a bright reconstructed pattern to be viewed in place of light sources in a scene while a spot due to zero-order transmitted light ...
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6854850 |
Multiple images from a single projector
An image projection system capable of projecting images to multiple screens or viewing surfaces. The system uses a moveable mirror to direct the projected images to the screens. The moveable mirror...
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6850346 |
Method and apparatus for storing and retrieving a sequence of digital page data
In a storing mode of an apparatus for storing and retrieving a sequence of digital page data, a first/second complex reference beam and a modulated signal beam converge on a storing location to gen...
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6850345 |
Sandwich holographic disk construction with thin molded substrates
In one embodiment, holographic data storage medium includes a first thermoplastic substrate portion having a thickness less than approximately 2 millimeters and a second thermoplastic substrate por...
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6849149 |
Hologram laminates
There are provided a hologram laminate and a hologram label which do not involve any problem in the production process per se of forging preventive labels using a volume hologram, can provide a rel...
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6844949 |
Method and apparatus for storing and retrieving digital page data
In a storing mode of an apparatus for sequentially storing and retrieving digital page data, a first and second complex reference beams and a modulated and second signal beams converge on a first/s...
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