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8179578 |
System, apparatus and method for extracting three-dimensional information of an object from received electromagnetic radiation
An apparatus and method to produce a hologram of an object includes an electromagnetic radiation assembly configured to receive a received electromagnetic radiation, such as light, from the object....
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8174744 |
Video hologram and device for reconstructing video holograms
The invention relates to video holograms and devices for reconstructing video holograms, comprising an optical system having a light source, lens and the video hologram having cells arranged in a...
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8159733 |
Method of forming an image and image projection device
A method of forming an image comprising providing a device for imparting respective phase shifts to different regions of an incident wavefront, wherein the phase shifts give rise to an image in a...
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8154781 |
Compact holographic display device
A holographic display device comprises a first OLED array writing onto a first OASLM, the first OLED array and the first OASLM forming adjacent layers, and a second OLED array writing onto a second...
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8154780 |
Holographic image projection systems
A holographic image projection system for projecting an image at an acute angle onto a surface includes: a spatial light modulator (SLM) to display a hologram; an illumination system to illuminate...
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8146808 |
Card which can be authenticated by hologram chip
A card authentication is performed. An authentication chip for performing authentication by a copy-disabled hologram chip is attached to a card and when or after the card is introduced into a...
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8149485 |
Dynamically reconfigurable holograms with electronically erasable programmable intermediate layers
Dynamically reconfigurable holograms with electronically erasable programmable intermediate layers are disclosed. An example apparatus includes first nanowires, each of the first nanowires having...
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8132923 |
Cooling device and image projection apparatus having the same
A cooling device which prevents ambient persons from being exposed to an unpleasant feeling as much as possible by properly controlling an exhausting direction of the air which is used for cooling...
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8107144 |
Method and device for manufacturing a hologram recording medium containing multiple objects that are reproduced when observed from different positions
A method and a device for manufacturing a hologram recording medium that has an arrangement by which different original images are reproduced when observed from different positions. The method...
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RE43088 |
Computation of computer generated holograms
A method of computing a computer generated hologram (CGH) for use in displaying a holographic image of a replay object. The method of generating a first computer generated hologram corresponding to...
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8089683 |
Optical processing
A modular routing node includes a single input port and a plurality of output ports. The modular routing node is arranged to produce a plurality of different deflections and uses small adjustments...
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8085452 |
Holographic imaging systems with DC balance
A holographic imaging system includes an electrical addressable spatial light modulator (EASLM) and an optically addressable spatial light modulator (OASLM). A read light is configured to...
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8085453 |
Phase retrieval and phase hologram synthesis
A method of retrieving phase information from input intensity information, representative of a target image, in which a Fourier transform is performed on data and the result used in forming a phase...
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8077365 |
Holographic image display system
This invention relates to holographic image display systems, and to related methods and processor control code. We describe a method of displaying an image holographically, the method including:...
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8072488 |
Holographic apparatus and method
The invention relates to a method of and apparatus for displaying a holographically generated video image having plural video frames. For each frame there is provided and computed (20) a respective...
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8049941 |
Method for the compensation of an inhomogeneous brightness perception in holographically reconstructed scenes
To compensate for an inhomogeneous brightness perception in a holographic reconstruction of 3D-scenes (4), a computing means encodes modulator cells of a SLM with a hologram point data pattern....
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8045244 |
Holographic projection method and holographic projection device
Video image data is converted into spatial frequency information using Fourier transformation. The spatial frequency information is provided to an information display unit. The spatial frequency...
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8045267 |
Optical element that enables recording and reproduction of a stereoscopic image as a hologram
An optical element having a set of a plurality of three dimensional cells. Each cell with a specific amplitude and a specific phase are defined and which has optical characteristics such that when...
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8031382 |
Displaying an image
A target image 60 is multiplied by an appropriate phase pattern to provide a phase modified image 61 to which an inverse Fourier transform is applied to generate a source hologram 62. A set of...
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8027071 |
Video hologram and device for reconstructing video holograms for large objects
A video holographic display device operates so that the size of a reconstructed three dimensional scene is a function of the size of the hologram-bearing medium; the reconstructed three dimensional...
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8022344 |
Optical wavefront control pattern generating apparatus and optical wavefront control pattern generating method
An optical wavefront control pattern generating apparatus (1) relating to the present invention includes: a target image detector unit (60) configured to detect spatial information of the object...
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8019233 |
Method and apparatus for using a hologram to control the optical field distribution of light generated by a light source and launched into an end of an optical waveguide
A diffractive coupling element based on a computer-generated hologram is used in an optical coupling system of a transmitter to control the launch of laser light from a laser light source onto an...
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8009340 |
Apparatus and method for recording fresnel holograms
An apparatus for producing a hologram of an object includes a light source that emits an incoherent electromagnetic wave toward the object, and a masking device configured to display a mask,...
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8002413 |
Light source unit and projector
There is provided a light source unit which includes a luminescent light source which receives excitation light so as to emit light of a predetermined wavelength band, excitation light sources...
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7999981 |
Method and device for manufacturing a hologram recording medium
Arrangements are made to enable different original images to be reproduced upon observation from different positions and yet enable reproduced images of high resolution to be obtained. In a case of...
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7978386 |
Generation of holographic diffraction patterns
A method of generating a holographic diffraction pattern and a holographic lithography system. The method involves defining at least one geometrical shape; generating at least one line segment to...
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7969633 |
Method and device for computing computer-generated video holograms
The data defining an object to be holographically reconstructed is first arranged into a number of virtual section layers, each layer defining a two-dimensional object data sets, such that a video...
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7967445 |
Image projecting apparatus and image projecting method
An image projecting apparatus enables the formation of a projected image faithful to original image information by reducing degradation in the projected image due to decrease in imaging performance...
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7969632 |
Fabrication method for a computer-generated hologram in which a three-dimensional object having visualized cross-sectional surfaces is recorded, and computer-generated hologram in which a three-dimensional object having visualized cross-sectional surfaces is recorded
A method for fabricating a computer generated hologram or holographic stereogram can reconstruct a three-dimensional object having visualized cross-sectional surfaces, wherein three-dimensional...
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7961367 |
Method and system for producing multiple images in a single image plane using diffraction
Methods create images viewable under different selected angels on optical storage devices and other photosensitive surfaces and optical storage devices with super-imposed images. Generally, a...
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7940437 |
Computer-generated hologram for reconstructing a full-color image with high resolution and its fabrication method
A computer-generated hologram that is capable of reconstructing a full-color image and achieving a high resolution is provided. A recording plane of the hologram is divided by a multiplicity of...
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7929189 |
Video hologram and device for reconstructing video holograms using geometrical calculation
A geometrical method for working out how to encode a hologram onto a hologram bearing medium is disclosed. The method involves (a) selecting a point on the three dimensional scene to be...
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7924484 |
Video hologram and device for reconstructing video holograms with small region encoding
In a video hologram that enables a three dimensional scene to be reconstructed, a specific region in the hologram encodes information for a particular, single point in the reconstructed scene. This...
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7910869 |
Laser processing apparatus using distinct horizontal and vertical data sets
A laser processing apparatus includes a laser source (11), a spatial phase modulator (13) configured to modulate a phase of a laser beam emitted from the laser source, a synthetic data generator...
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7911666 |
Apparatus for reading a hologram
An apparatus for reading a hologram, in particular a computer-generated hologram, that includes a radiation source for irradiation of the hologram with a read beam composed of electromagnetic...
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7894121 |
Light valve assembly with a holographic optical element and a method of making the same
A light valve assembly comprises a holographic optical element and a light valve that comprises an array of individually addressable pixels. The light valve assemblies can be fabricated on the die...
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7889406 |
Apparatus and method to align the elements of a holographic information data storage system
A method to align the write channel portion of a holographic data storage system. The method establishes a write threshold correlation factor, provides a reference beam, and illuminates a...
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7880944 |
Computer-generated hologram
To prepare very high resolution computer-generated hologram having many numbers of parallaxes, a computer-generated holographic stereogram, with virtual point light source group set up spatially on...
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7852538 |
Hologram recording apparatus and hologram recording method
At the time of varying the angle of a scan mirror for varying the angle of incidence of a reference beam on a hologram recording material, the angle of a slit is also varied in conjunction, whereby...
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7847238 |
Holographic microfabrication and characterization system for soft matter and biological systems
A method and system for micromanipulation of objects of any shape. The method and system creates various forms of holographic optical traps for a variety of commercial purposes. Some alternate...
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7847992 |
Method and apparatus for recording one-step, full-color, full-parallax, holographic stereograms
Methods and devices for creating and printing variable size and variable resolution holographic stereograms and holographic optical elements can generate one-step, full-color, full-parallax...
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7839548 |
Video hologram and device for reconstructing video holograms
The invention relates to video holograms and devices for reconstructing video holograms, comprising an optical system that consists of a light source, lens and the video hologram that is composed...
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7830573 |
Method and system for producing multiple images in a single image plane using diffraction
Methods create images viewable under different selected angles on optical storage devices and other photosensitive surfaces and optical storage devices with super-imposed images. Generally, a...
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7800035 |
Optical wavefront control pattern generating apparatus and optical wavefront control pattern generating method
An optical wavefront control pattern generating apparatus includes: a reconstructed image detector unit configured to detect a reconstructed image displayed on the reconstructed image display; and...
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7782510 |
Computer generated hologram
A three dimensional display apparatus includes a diffraction panel for displaying a computer generated hologram and a look-up table. The look-up table includes a plurality of phase entries...
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7768683 |
Apparatus and method to align the elements of a holographic information data storage system
A method to align the write channel portion of a holographic data storage system, wherein the method establishes a write threshold correlation factor, provides a reference beam, and illuminates a...
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7768684 |
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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7738151 |
Holographic projector
A projection device having a coherent light beam-generator that generates a light beam and a beam expander disposed to receive the light beam and to emit an expanded light beam. The projection...
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7706038 |
Method and device for manufacturing a hologram recording medium
Arrangements are made to enable different original images to be reproduced upon observation from different positions and yet enable reproduced images of high resolution to be obtained. In a case of...
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7692131 |
Imaging system and methodology with projected pixels mapped to the diffraction limited spot
An imaging system, methodology, and various applications are provided to facilitate optical imaging performance. The system contains a sensor having one or more receptors and an image transfer...
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