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This page is updated frequently with new Hologram-related patent applications. Subscribe to the Hologram RSS feed to automatically get the update: related Hologram RSS feeds. RSS updates for this page: Hologram RSS RSS


Image display apparatus and non-planar screen

Jvc Kenwood

Image display apparatus and non-planar screen

Date/App# patent app List of recent Hologram-related patents
04/23/15
20150109895
 Optical information reproducing apparatus, optical information reproducing method, and optical information recording method patent thumbnailnew patent Optical information reproducing apparatus, optical information reproducing method, and optical information recording method
When books are densely bedded on a recording medium for recording a hologram on the medium with a high density, the books need to be positioned at a reference light irradiation position with a high precision when reproducing. An optical information reproducing apparatus for producing information from an optical information recording medium, includes: a light source that emits a reference light; an angle adjustment part that adjusts an incident angle of the reference light emitted from the light source to the optical information recording medium; a filter part that suppresses an unnecessary light of a diffracted light obtained when the optical information recording medium is irradiated with the reference light adjusted by the angle adjustment part; a light detection part that detects at least a part of the diffracted light obtained by irradiating the optical information recording medium with the reference light adjusted by the angle adjustment part; and a control part that controls the filter part, wherein at least a part of page data within an adjacent book is recorded as information on the optical information recording medium while deviating the incident angle of the reference light in an angle multiplexing direction, and wherein the control part controls the filter part on the basis of the signal detected by the light detection part..
Hitachi-lg Data Storage, Inc.
04/23/15
20150109648
 Image display apparatus and non-planar screen patent thumbnailnew patent Image display apparatus and non-planar screen
To obtain images with a higher ansi contrast compared to that of the related art. A hemispherical hologram screen includes a hologram recording medium arranged on a projection surface.
Jvc Kenwood Corporation
04/16/15
20150103140
 Volume holographic imaging system (vhis) endoscope patent thumbnailVolume holographic imaging system (vhis) endoscope
Provided are modular volume holographic imaging system (vhis) endoscopic systems, comprising: an endoscope attachment module having a microscope objective lens, a single or cascaded compensated relay system configured to preserve an optical wavefront for use with a single or multiplexed volume hologram to select wavefronts originating from different object depths, and a system aperture; and a handle module configured to be reversibly attachable for operative communication with the endoscope attachment module, and having a beam splitter; a relay having adjustable spacing for object space focus compensation, and a single or multiplexed volume hologram suitable in operation to select wavefronts originating from different object depths, and wherein the handle module is further configured for operative communication with an illumination source and imaging optics. Preferably, an illumination module and an imaging module are configured to be in operative, reversibly attachable communication with the handle module.
The Arizona Board Of Regents On Behalf Of The University Of Arizona
04/16/15
20150103011
 Holographic interaction device patent thumbnailHolographic interaction device
A holographic interaction device is described. In one or more implementations, an input device includes an input portion comprising a plurality of controls that are configured to generate signals to be processed as inputs by a computing device that is communicatively coupled to the controls.
Microsoft Corporation
04/09/15
20150098243
 Illumination device with spaced-apart diffractive media patent thumbnailIllumination device with spaced-apart diffractive media
This disclosure provides systems, methods and apparatus for an illumination system. In one aspect, the illumination system is a light guide that includes spaced-apart regions of medium containing diffractive features.
Qualcomm Mems Technologies, Inc.
04/09/15
20150098066
 Interferometric spatial light modulator for production of digital holograms patent thumbnailInterferometric spatial light modulator for production of digital holograms
A digital holographic apparatus, system, and method are disclosed. The apparatus includes an electronic display device comprising an interferometric spatial light modulator based display engine and a processor coupled to the electronic display device.
Bayer Materialscience Llc
04/09/15
20150097925
 Apparatus and  displaying hologram based on pupil tracking using hybrid camera patent thumbnailApparatus and displaying hologram based on pupil tracking using hybrid camera
Provided are an apparatus and a method for displaying a hologram based on pupil tracking using a hybrid camera, wherein a hologram display apparatus includes a pupil tracker to track a location of a pupil of a user using a depth image and a color image generated by capturing an image of the user, a viewing window controller to control a viewing window of a hologram based on the tracked location of the pupil of the user, and a hologram generator to generate a hologram based on the controlled viewing window.. .
Electronics And Telecommunications Research Institute
03/26/15
20150086907
 Photosensitive composition for volume hologram recording, volume hologram recording medium using same,  manufacturing volume hologram recording medium, and hologram recording method patent thumbnailPhotosensitive composition for volume hologram recording, volume hologram recording medium using same, manufacturing volume hologram recording medium, and hologram recording method
Provided is a photosensitive composition for volume hologram recording capable of forming a volume hologram recording medium that less shrinks upon curing in hologram recording (in hologram formation) and resists cracking. The photosensitive composition for volume hologram recording contains an alicyclic epoxy compound (a) represented by formula (i); a thermal acid generator (b); a radically polymerizable compound (c); a radical polymerization initiator (d); and at least one epoxy compound (e) selected from the group consisting of compounds represented by formula (1), epoxidized fatty acid esters, and epoxidized conjugated diene polymers..
Daicel Corporation
03/26/15
20150085331
 Wide-viewing angle holographic display apparatus patent thumbnailWide-viewing angle holographic display apparatus
A holographic display apparatus is provided. The holographic display apparatus may include an input optical unit to illuminate coherent parallel light to a spatial light modulator (slm), the slm to generate a plurality of hologram-modulated diffraction beams by illuminating the coherent parallel light in a plurality of directions, or to generate hologram-modulated higher-order diffraction beams by illuminating the coherent parallel light in a single direction, and an optical imaging unit to reproduce at least one holographic three-dimensional (3d) image with different viewpoints on a single imaging area, using the generated at least one diffraction beam..
Electronics And Telecommunications Research Institute
03/19/15
20150077819
 Synthetic optical holography patent thumbnailSynthetic optical holography
Methods and apparatus for imaging a phase or amplitude that characterizes a scattered field emanating from a physical medium. A local probe is stepped to a plurality of successive probe positions and illuminated with an illuminating beam, while a specified phase function is imposed on a reference beam relative to the illuminating beam.
The Board Of Trustees Of The University Of Illinois
03/19/15
20150077818

Converting complex holograms to phase holograms


Fast processing of information represented in digital holograms is provided to facilitate converting a complex fresnel hologram into a single phase-only hologram, which can be called a bidirectional error diffusion (berd) hologram, for displaying 3-d holographic images representative of a 3-d object scene on a display device. The berd hologram can be capable of representing a 3-d object scene and preserving favorable visual quality on the reconstructed holographic image.
City University Of Hong Kong
03/19/15
20150077514

Holographic imaging


Technologies are generally described for generating an image in a holographic imaging device by causing multiple reflections of a hologram reconstruction light on one side of a display panel in the holographic imaging device. An example device may include a display panel, a semi-transparent mirror layer on the display panel, a mirror layer at a side of the semi-transparent mirror layer opposite to the display panel, and a light irradiation unit opposite to the semi-transparent mirror layer.
Empire Technology Development Llc
03/12/15
20150070656

Led light has kaleidoscope means


The led device project colorful image incorporate kaleidoscope-means, miniatures-means, project-means, optics-means, reflective means, led(s), power means, control means, vibration-means, motor-means, adjustable focus means, circuit-means, sensor-means, ic means, display-unit(s), lens, hologram means, lenticular means, laser created means, digital data means and other related parts & accessories inside co-inventors prior filing cases as listed inside content to make the led device project the colorful splendid patterns to any desired surface(s). The said kaleidoscope means has different mirror numbers, mirror arrangement, different leds arrangement to created very pretty colorful splendid image to viewer on walls, ceiling, object surface, floor, outdoor surface further may optional add motor means, adjust means to make image changeable, adjustable means to change focus, angle, size, colorful, time period, leds matrix-arrangement on each on-time, leds number for each on-time, led brightness, led duration..
03/12/15
20150069128

Optical reading device, optical reading method, and program


An optical reading device authenticates an identification medium with cholesteric liquid crystal layer, having a structure in which no movable parts are necessary for switching circular circularly polarized light filter. The optical reading device reads an image from an identification medium having a cholesteric liquid crystal layer having a hologram processed, and an ink printed pattern layer in this order, and the device includes a light emitting part in which a right circularly polarized light filter is arranged in front of an led, a light emitting part in which a right circularly polarized light filter is arranged in front of an led, and a controlling part which switches light emission between the light emitting parts..
Nhk Spring Co., Ltd.
03/05/15
20150062885

Light-emitting device with diffractive structures and a synthetic hologram


A heater of the metal layer.. .
03/05/15
20150062675

Dynamic aperture holography


Methods and systems for performing dynamic aperture holography are described. Embodiments include a method of recording multiple holograms in a photosensitive recording medium, wherein multiple signal beam angular apertures used to record the multiple holograms differ from each other.
Akonia Holographics, Llc
03/05/15
20150062592

Method and motility contrast imaging


A system for motility contrast imaging a biological target within tissue comprising a ccd array; an illumination source for generating an incoming beam; a first beam splitter for receiving the incoming beam and producing an object beam and a reference beam; a second beam splitter for illuminating a multitude of biological targets with the object beam and for directing backscattered object beams towards the ccd array; a computer-controlled delay stage for zero-path-matching the reference beam to the backscattered object beams; a reference beam that intersects the backscattered object beams at an angle to produce a series of interference fringes that modulate fourier-domain information; and a computer for receiving a time series of fourier-domain information. The interference fringes between the backscattered object beam and the reference beam are recorded by the ccd array and passed to the computer which constructs a digital hologram at successive times..
Purdue Research Foundation
03/05/15
20150062504

Identification medium


An identification medium can be affixed to cloth or leather products by sewing. A cholesteric liquid crystal layer on which an embossed surface for forming a hologram is formed, is sandwiched between a first supporting member and a second supporting member.
Nhk Spring Co., Ltd.
02/26/15
20150056538

Device for protecting crops using hologram of natural enemy eyes and fabricating the same


Disclosed are a device for protecting crops from wildlife, comprising an optical base film on both sides of which fluorescent holograms of natural enemies with both eyes and optionally claws or talons are laser printed while a composition containing a phosphorescent material and a repellent is applied to both eyes, and optionally to the claws or talons, and a method for fabricating the same. Oils and extracts from herbs are used selectively as ingredients in the repellent depending on repelling targets, that is, mammals, rodents and birds.
Bio Defense
02/05/15
20150036199

Method of computing a hologram


A method of computing a hologram by determining the wavefronts at the approximate observer eye position that would be generated by a real version of an object to be reconstructed. In normal computer generated holograms, one determines the wavefronts needed to reconstruct an object; this is not done directly in the present invention.
Seereal Technologies Gmbh
02/05/15
20150036198

Hologram transfer foil, fabrication image display element, image display element, and personal authentication medium


A hologram transfer foil according to an embodiment is thermally transferrable to a transfer base member. The hologram transfer foil has a structure configured such that a peeling layer, a diffraction structure forming layer and an adhesive layer are stacked on one surface of a substrate.
Toppan Printing Co., Ltd.
02/05/15
20150035946

Methods and systems for three dimensional optical imaging, sensing, particle localization and manipulation


Embodiments include methods, systems, and/or devices that may be used to image, obtain three-dimensional information from a scene, and/or locate multiple small particles and/or objects in three dimensions. A point spread function (psf) with a predefined three dimensional shape may be implemented to obtain high fisher information in 3d.
The Regents Of The University Of Colorado, A Body Corporate
02/05/15
20150035270

Thin aluminium flakes


The present invention relates to aluminium flakes having a thickness between 7 and 9 nm, coating compositions containing them and the use of the coating compositions for forming (security) products. When the compositions of the present invention are used in coating a hologram the obtained products show an extremely bright ovd image and extremely strong rainbow effect, high purity and contrast..
Basf Se
01/29/15
20150029567

Folding holographic sight for a gun


A holographic weapon sight folds for storage or to position where a portion of the sight is out of the way when not in use. Certain embodiments include a readout beam source mounted to the stationary base of the sight and the source directly illuminates a hologram plate supported in a pivotally mounted hologram support when the sight is in a position intended for use..
Optiflow, Inc.
01/29/15
20150029565

Device and feedback based digital holographic content reconstruction verification


Provided are a device and a method for feedback based digital holographic content reconstruction verification. The device may include a generator to generate a holographic content by receiving a first parameter value, a reconstructor to reconstruct a hologram from the holographic content, and a feedback based interface to adjust the first parameter value to be a second parameter value by receiving feedback on the hologram..
Electronics And Telecommunications Research Institute
01/15/15
20150015928

Novel fast fourier transform (fft) analysis using waveform-embedded or waveform-modulated coherent beams and holograms


Method of fast fourier transform (fft) analysis for collecting waveforms and other vibrational intelligence and modulating or embedding same into one or more coherent reference beams of an n-dimensional holographic recording device for producing one or more holograms of objects, including singularity points in space. The result provides wholesale differentiation of waveforms distinguishable from others based on their spectral characteristics.
01/08/15
20150009684

Surface light source device for recording/reproducing holograms


A surface light source device is provided. The surface light source device includes a light source, a beam splitter configured to split a light irradiated from the light source into a plurality of light beams each having a different path, a diffusion unit configured to diffuse the plurality of light beams split by the beam splitter into a surface light, and a collimating unit configured to arrange the plurality of light beams diffused from the diffusion unit in one direction..
Samsung Electronics Co., Ltd.
01/08/15
20150009547

Method of operating a laser and laser apparatus using intra-cavity digital holograms


Laser apparatus includes an output coupler, a gain medium for generating laser light, a rear optical element, and an input coupler. The input coupler is arranged to direct a pump beam to the gain medium and to define an optical path between the output coupler and the rear optical element.
Csir
01/08/15
20150009546

Holographic film and recording method


This invention relates to holographic film for recording multicolor volume holograms, especially full color volume reflection holograms, and to manufacturing techniques for such film, and to corresponding methods of recording multicolor and full-color volume, in particular volume reflection holograms. We describe a holographic film for recording a multicolor volume hologram, the film comprising: a carrier; a first photosensitive recording layer sensitive to one or both of red and green laser light; and a second photosensitive recording layer sensitive to blue laser light.
01/01/15
20150006387

Preventing fraud using continuous card scanning


Comparing extracted card data from a continuous scan comprises receiving, by one or more computing devices, a digital scan of a card; obtaining a plurality of images of the card from the digital scan of the physical card; performing an optical character recognition algorithm on each of the plurality of images; comparing results of the application of the optical character recognition algorithm for each of the plurality of images; determining if a configured threshold of the results for each of the plurality of images match each other; and verifying the results when the results for each of the plurality of images match each other. Threshold confidence level for the extracted card data can be employed to determine the accuracy of the extraction.
Google Inc.
01/01/15
20150006361

Extracting card data using three-dimensional models


Comparing extracted card data from a continuous scan comprises receiving, by one or more computing devices, a digital scan of a card; obtaining a plurality of images of the card from the digital scan of the physical card; performing an optical character recognition algorithm on each of the plurality of images; comparing results of the application of the optical character recognition algorithm for each of the plurality of images; determining if a configured threshold of the results for each of the plurality of images match each other; and verifying the results when the results for each of the plurality of images match each other. Threshold confidence level for the extracted card data can be employed to determine the accuracy of the extraction.
Google Inc.
01/01/15
20150006360

Threshold confidence levels for extracted card data


Comparing extracted card data from a continuous scan comprises receiving, by one or more computing devices, a digital scan of a card; obtaining a plurality of images of the card from the digital scan of the physical card; performing an optical character recognition algorithm on each of the plurality of images; comparing results of the application of the optical character recognition algorithm for each of the plurality of images; determining if a configured threshold of the results for each of the plurality of images match each other; and verifying the results when the results for each of the plurality of images match each other. Threshold confidence level for the extracted card data can be employed to determine the accuracy of the extraction.
Google Inc.
01/01/15
20150002840

Method for measuring an angle between two spatially separated elements


Some embodiments of the invention relate to a method for measuring an angle between two spatially separated elements having the steps: preparing a multiplex hologram having a plurality of interference patterns, at least two having different angles of incidence of an object light wave onto a hologram plane; arranging the multiplex hologram in a first element plane on a first element; lighting the multiplex hologram with a reference light wave; arranging a light detector in a second element plane on a second element; detecting a reference light wave refracted on an interference pattern with a light detector; creating an intensity pattern from the detected refracted reference light wave; assigning the angle of incidence stored as machine readable data to the intensity pattern; and/or calculating an angle between the first element plane and the second element plane from the assigned angle of incidence.. .
Hexagon Technology Center Gmbh
12/11/14
20140360088

Fish shaped lure for trolling


Transfer sheets on which an image quite closely resembling an external appearance of a bait fish is color printed on the surface of a hologram sheet are adhered to back sides of bilaterally symmetrical body-half segments made of a flexible transparent thermoplastic resin in a state that the image can be viewed perspectively from the surface side. Only front head sides which occupy at least half in both the body-half segments are adhered and remaining rear end sides are kept open, by which a line equipped with a hook is guided out and wired to the front from the rear end sides via an interior hollow of a lure body..
12/04/14
20140355086

Display device using computer generated hologram


The instant application discloses a display device including a pattern generator configured to generate a diffraction pattern from an image; a light source configured to emit emission light; an optical condenser which condenses the emission light to generate illumination light; and a spatial light modulator which diffracts the illumination light according to the diffraction pattern to generate diffracted light. The diffracted light passes through the optical condenser..
11/27/14
20140347858

Illuminating device using coherent light source


A laser beam (l50) generated by a laser light source (50) is reflected by a light beam scanning device (60), and irradiated onto a hologram recording medium (45). On the hologram recording medium (45), an image (35) of a scatter plate is recorded as a hologram by using reference light that converges on a scanning origin (b).
11/27/14
20140347715

Illuminating method using coherent light source


A laser beam (l50) generated by a laser light source (50) is reflected by a light beam scanning device (60), and irradiated onto a hologram recording medium (45). On the hologram recording medium (45), an image (35) of a scatter plate is recorded as a hologram by using reference light that converges on a scanning origin (b).
11/27/14
20140347713

Image reading device


An image reading device having a conveying unit for conveying an irradiated member that has a hologram area in a conveying direction; a first light source for applying light to an irradiated part in the hologram area; and a second light source separated from the first light source along the conveying direction and applying light to an irradiated part in the hologram area when the hologram area is conveyed by a prescribed distance. An irradiation angle at which the irradiated part is irradiated with the light of the first light source is made to be different from an irradiation angle at which the irradiated part is irradiated with the light of the second light source when the hologram part is conveyed by the prescribed distance.
11/27/14
20140347391

Hologram anchoring and dynamic positioning


A system and method are disclosed for displaying virtual objects in a mixed reality environment in a way that is optimal and most comfortable for a user to interact with the virtual objects. When a user is moving through the mixed reality environment, the virtual objects may remain world-locked, so that the user can move around and explore the virtual objects from different perspectives.
11/20/14
20140340723

Volume hologram, manufacturing method thereof, and shift wavelength spectrum of diffracted light


A manufacturing method of the volume hologram includes a step of hologram recording for recording information to a hologram recording layer and a pressing step of the hologram recording layer for pressing at least a portion of the hologram recording layer recorded with the information. In the step of pressing the hologram recording layer, the hologram recording layer recorded with information may change..
11/20/14
20140340651

Projection apparatus and hologram recording medium


A projection apparatus has a hologram recording medium configured to be capable of diffusing coherent light beams, an irradiation unit configured to irradiate coherent light beams to the hologram recording medium so that the coherent light beams scan the hologram recording medium, a light modulator that is illuminated by coherent light beams incident on and diffused at respective points of the hologram recording medium from the irradiation unit, a projection optical system configured to project a modulated image generated by the light modulator onto a scattering plane, and an imaging optical system provided between the hologram recording medium and the light modulator, configured to converge the coherent light beams diffused at respective points of the hologram recording medium to illuminate the light modulator.. .
11/13/14
20140333977

Display device


Provided is a display device. The display device includes a backlight unit generating a plurality of flat lights and a spatial light modulator (slm) unit generating an interference pattern by using the plurality of lights according to hologram data and displaying a hologram based on the generated interference pattern.
11/06/14
20140327944

Hologram processing method and system


The invention relates to a hologram, or holographic intensity data, processing method and system. The system implements the method which comprises receiving holographic intensity data comprising at least a holographic intensity pattern or image at a discrete location in a propagation space, the propagation space comprising the three-dimensional space over which light waves or illumination forming the holographic intensity pattern propagates.
11/06/14
20140327943

System, extracting image cross-sections of an object from received electromagnetic radiation


An apparatus and method to produce a hologram of a cross-section of an object includes an electromagnetic radiation assembly configured to receive a received electromagnetic radiation, such as light, from the object. The electromagnetic radiation assembly is further configured to diffract the received electromagnetic radiation and transmit a diffracted electromagnetic radiation.
11/06/14
20140327942

Method for preparing a hologram recording medium


Two original images to be recorded are prepared as data (s10). A plurality of unit regions, each having an adequate area to record interference fringes of visible light, are defined and positioned on a hologram recording surface (s20).
11/06/14
20140327735

Portable digital holographic probe for the inspection of optical fiber connectors, and inspection the same


A portable inspection probe for the inspection of a recessed mating surface of an optical fiber connector is provided. In one variant, the portable inspection probe includes a digital holographic detection module operable to digitally record a hologram of the recessed mating surface, and a rigid probe tip configured to be optically coupled to the digital holographic detection module and shaped to provide optical access to the recessed mating surface.
10/30/14
20140320942

Apparatus for producing a hologram


An apparatus for producing a hologram includes a collimation lens configured to receive incoherent light emitted from an object; a spatial light modulator (slm) that includes at least one diffractive lens which is configured to receive the incoherent light from the collimation lens and split the incoherent light into two beams that interfere with each other; and a camera configured to record the interference pattern of the two beams to create a hologram, wherein a ratio between a distance from the slm to the camera and a focal length of the diffractive lens is greater than 1.. .
10/23/14
20140313874

Optical head device and optical disc device


An optical component, a hologram, and a photodetector are configured in an optical head device of an optical disc device such that a +1-order beam or a −1-order beam of diffracted light generated from light reflected from an information track in the intended information recording layer strikes the interior of the light-receiving surfaces of the tracking error detection light-receiving sections, a +1-order beam or a −1-order beam of diffracted light generated from light reflected from an information track in an information recording layer one layer deeper than the intended information recording layer strikes outside the light-receiving sections, and a +1-order beam or a −1-order beam of diffracted light that is generated from light reflected from an information track in an information recording layer one layer shallower than the intended information recording layer strikes outside the light-receiving sections.. .
10/23/14
20140313555

Digital hologram synthesis method and apparatus


Provided are a digital hologram synthesis method and apparatus based on an angular spectrum. The digital hologram synthesis method includes representing an input digital hologram as at least one angular spectrum region by applying fourier transformation to the input digital hologram, registering the at least one angular spectrum region by projecting the at least one angular spectrum region onto a spherical surface, and generating a synthesis digital hologram based on the registered at least one angular spectrum region.
10/23/14
20140313225

Augmented reality auction platform


An augmented reality submission includes a hologram to virtually augment a world space object and a compensation offer for presenting the hologram to a viewer of the world space object. The augmented reality submission is selected as a winning submission if the submission satisfies a selection criteria..
10/16/14
20140307298

Apparatus and generating hologram pattern


A method and apparatus for generating a hologram pattern using depth quantization may generate a hologram pattern corresponding to a three-dimensional (3d) object in a hologram plane using color image information of the 3d object and a point of the 3d object included in a quantized depth layer.. .
10/09/14
20140301177

Optical information recording/reproducing apparatus and optical information recording/reproducing method


An optical information recording/reproducing apparatus for recording an interference pattern between signal light and reference light information-multiplexed as a hologram in an optical information recording medium and for reproducing information recorded in the optical information recording medium on the basis of the recorded hologram with use of the reference light. The apparatus includes a light source for emitting light and a coherency controller for controlling a coherency of the light source.
10/09/14
20140300941

Method and generating hologram based on multi-view image


Disclosed are a method and apparatus for generating a hologram based on a multi-view image. The method of generating a hologram image may include receiving a multi-view image and calculating depth information about an image at each view of the multi-view image, calculating an integrated 3-d space datum based on the multi-view image and the pieces of depth information, and generating hologram information from the integrated 3-d space datum.
10/09/14
20140300839

Holography 3d display


The present disclosure relates to a holography three dimensional display in which no 3d cross-talk problem is arisen. The present disclosure suggests an apparatus for displaying hologram images comprising: a display panel displaying a hologram image; a back light unit disposed at one side of the display panel for supplying a back light; a first light path deflecting cell disposed at another side of the display panel facing away from the back light unit for forming a first prism pattern along a first direction rotating by a predetermined angle from a horizontal axis of the display panel; and a second light path deflecting cell disposed in front of the first light path deflecting cell for forming a second prism pattern along a second direction perpendicular to the first direction..
10/02/14
20140295329

Holographic medium having a protective layer


This invention relates to a holographic medium comprising a protective layer and a photopolymer film which is bonded to the protective layer and contains polyurethane matrix polymers, acrylate writing monomers and photoinitiators, wherein the protective layer is impermeable to the constituents of the photopolymer film, is optically clear and is transparent to electromagnetic radiation having a wavelength in the range of from 350 to 800 nm. The invention further provides the use of a holographic medium according to the invention in the production of holograms, and a process for the production of a holographic medium according to the invention..
10/02/14
20140293389

Optical device and virtual image display


An optical device includes: a light guide plate receiving, for each of n types of wavelength bands, a plurality of parallel light beams with different incident angles each corresponding to view angles, and guiding the received parallel light beams; a first and a second volume hologram gratings of reflection type having a diffraction configuration which includes n types of interference fringes each corresponding to the n types of wavelength bands, and diffracting/reflecting the parallel light beams. The optical device satisfies for each wavelength band, a relationship of ‘p>l’, where ‘l’ represents a central diffraction wavelength in the first and second volume hologram gratings, defined for a parallel light beam corresponding to a central view angle, and ‘p’ represents a peak wavelength of the parallel light beams..
10/02/14
20140293387

Grey-scale holographic structure and system for generating a millimeter-wave collimated wavefront in a compact range


Embodiments of a grey-scale holographic structure and system for generating a collimated wavefront in a compact range are generally described herein. In some embodiments, the grey-scale holographic structure comprising millimeter-wave transmissive material having a surface arranged to provide differing amounts of phase-delay to an incident millimeter-wave wavefront as the incident wavefront passes through the material.
10/02/14
20140293385

Course integral holographic display


A holographic display system for generating a super hologram with full parallax in different fields of view in the horizontal and vertical directions. The system includes an array of holographic display devices, e.g., spatial light modulators (slms), operable to provide a plurality of holographic images of a scene from differing viewpoints of the scene.
09/25/14
20140285863

Method and holographic recording


Provided is a holographic recording method in which an interference fringe between a reference beam and a signal beam, modulated according to information regarding a plurality of hologram pixels, is recorded on a holographic recording medium, the holographic recording method including multiplexing-recording the interference fringe of the plurality of hologram pixels such that at least a part of the interference fringe recorded of neighboring hologram pixels of the plurality of hologram pixels is overlapped.. .
09/25/14
20140284382

Random-type multilayer identification, and system using same


A random-type multilayer identifier uses an identification pattern that is formed by irregularly-dispersed identification particles as unique information and is configured in such a manner that two or more identification layers made out of a transparent material are stacked each other, and besides, has an advantage that significantly reduces the duplication possibility of an existing identifier provided in a printed manner, such as a qr code, a barcode, a hologram, etc., because multiple identification layers having the irregularly-dispersed identification particles are stacked each other and recognized as two-dimensional data.. .
09/18/14
20140270456

Image recovery from single shot digital hologram


Techniques described herein are generally related to high resolution image recovery of objects from digital holograms. The various described techniques may be applied to methods, systems, devices or combinations thereof.
09/18/14
20140268096

Time-gated image reconstruction using phase conjugation


A method and system are described for illuminating a target with a laser source with a wide-area illuminating beam. A conjugator can receive a reflected, imprinted wavefront from the target that is imprinted with effects from beam distortions and obstructions between the laser source and the target.
09/18/14
20140267597

Apparatus and generating interference fringe pattern


An apparatus for generating holograms includes a laser source configured to emit a laser beam with a frequency of v; an acoustic optical modulator configured to generate, from the laser beam, a first beam with a frequency of v1 and a second beam with a frequency of v2; a first beam splitter configured to split the first beam into a first reference beam and a first object beam, the first object beam being led to a sample; a second beam splitter configured to split the second beam into a second reference beam and a second object beam, the second object beam being led to the sample; and a detector configured to detect an image composed of a first fringe, based on the first reference beam and the first object beam, and a second fringe, based on the second reference beam and the second object beam.. .
09/11/14
20140253990

Light shaping for imaging using holography


A plurality of light sources of different wavelength bands can be provided. An imaging device can be configured to modulate incoming light according to video image data and output modulated light.
09/11/14
20140253988

Hologram generating apparatus


A hologram generating apparatus and method. In one embodiment of the apparatus includes a base and a rigid platform.
09/11/14
20140253986

Image photography method, image photography play method, spatial lighting modulator, image play device, and digital hologram forming device


Submitted is an image photography play method which is suited to playing a stereoscopic video. The image photography method comprises: a step of forming a hologram pattern from a reference light and a subject light; a step of digitally processing the obtained hologram pattern; a step of writing the digitized hologram pattern as a magnetized vector pattern to a spatial lighting modulator which is formed from a magneto-optical material; and a step of inputting linearly polarized light into the spatial lighting modulator and playing an image according to the digitized hologram pattern..
09/11/14
20140253985

System for order alignment of diffractively produced images


A system for order alignment of diffractively produced images is provided. The system comprises: a diffractive spatial light modulator (dslm) configured to provide a computer generated hologram of an image; a substantially coherent light source configured to illuminate the dslm which responsively produces the image along each of different diffractive order paths; and, at least one set of optical components located along respective diffractive order paths of the dslm, the at least one set of optical components configured to align at least one respective image diffracted from the dslm with at least another diffracted image at a common image plane..
09/11/14
20140253432

Sensor-monitored, 3d, interactive holographic freespace control unit (hfcu) and associated components


A sensor/camera-monitored, virtual image or holographic-type display device is provided and called a sensor-monitored, 3d, interactive holographic freespace control unit (hfcu). This invention allows user interactions with the virtual-images or holograms without contacting any physical surface; it is achieved via the use of a visually bounded freespace both with and without holographic-type assistance.


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Hologram topics: Holographic, Modulation, Visibility, Holographic Data Storage, Control Unit, Phase Modulation, Spatial Modulation, Contrast Ratio, Imaging System, Processing Device, Recording Device, Calibration, Data Storage, Reproduction, Light Guide

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