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Hologram patents



      
           
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


Method and apparatus for generating hologram based on multi-view image

Method and apparatus for generating hologram based on multi-view image

Holography 3d display

Holography 3d display

Holography 3d display

Holographic medium having a protective layer

Date/App# patent app List of recent Hologram-related patents
10/09/14
20140301177
 Optical information recording/reproducing apparatus and optical information recording/reproducing method patent thumbnailOptical 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 apparatus for generating hologram based on multi-view image patent thumbnailMethod and apparatus for 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 patent thumbnailHolography 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 patent thumbnailHolographic 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 patent thumbnailOptical 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 patent thumbnailGrey-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 patent thumbnailCourse 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 apparatus for holographic recording patent thumbnailMethod and apparatus for 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 patent thumbnailRandom-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 patent thumbnailImage 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 method for 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.
08/28/14
20140241140
Optical information recording apparatus, optical information recording method, optical information reproducing apparatus and optical information reproducing method
An optical information recording/reproducing apparatus and an optical information recording/reproducing method that record information using holography, wherein the optical information recording/reproducing apparatus includes a signal generation unit that generates two-dimensional data by a two-dimensional encoding method in which a lower-limit value of a number of continuous on/off pixels in an array in one direction of pixels in a two-dimensional spatial light modulator is k(k≧2, k: natural number); and a pickup that records the two-dimensional data, generated by the signal generation unit, on a hologram disc.. .
08/28/14
20140240807
Digital hologram recording system and numerical reconstruction method for hologram
The present invention provides a digital hologram recording system and a numerical reconstruction method for a hologram, which are used for capturing an image of an object and recording it as a holographic data. Said system comprises: signal light, formed after irradiating the object with a light source; an image detector, for recording interference fringes of the signal light; and a light pipe, arranged in a path of the signal light and located between the object and the image detector, wherein the light pipe has a reflection surface, and a part of the signal light enters the image detector after reflected by the reflection surface of the light pipe.
08/28/14
20140240805
Method of producing volume hologram laminate
A main object of the present invention is to provide a method of producing a volume hologram laminate which can regenerate a hologram image in an arbitrary wavelength by a simple process. To attain the object, the present invention provides a method of producing a volume hologram laminate using a volume hologram forming substrate which comprises: a substrate, a volume hologram layer formed on the substrate and containing a photopolymerizable material, a resin layer, formed on the substrate so as to contact to the volume hologram layer, containing a resin and a polymerizable compound, characterized in that the producing method comprises processes of: a hologram recording process to record a volume hologram to the volume hologram layer, a substance transit process of transiting the polymerizable compound to the volume hologram layer, and an after-treatment process of polymerizing the polymerizable compound..
08/21/14
20140233079
Hologram recording film and method of manufacturing same, and image display apparatus
A hologram recording film manufacturing method includes the steps of obtaining a laminated structure by alternately laminating m (where m≧2) photosensitive material precursor layers including a photosensitive material and at least one (m−1) resin layer on one another, obtaining m photosensitive material layers, where at least two interference fringes with a desired pitch and a desired slant angle are formed on each of the m photosensitive material layers, from the m photosensitive material precursor layers by irradiating the laminated structure with a reference laser light beam and an object laser light beam, and making the slant angles of the m photosensitive material layers different from each other while retaining the pitch value, which is defined on a face of the photosensitive material layer, by irradiating the laminated structure with an energy ray from the laminated structure's one face side, and heating the laminated structure.. .
08/21/14
20140230897
Solar concentration system using volume holograms
An electromagnetic wave concentrating system, comprising a photovoltaic material and at least one holographic concentrator. The holographic concentrator includes at least two stacked holographic optical elements (hoe).
08/07/14
20140218786
Devices and methods for achieving non-contacting white state in interferometric modulators
This disclosure provides systems, methods and apparatus for providing white light color output from an electromechanical systems (ems) device with reduced likelihood of stiction. In one aspect, interferometric modulators are configured to provide a white color output while having a non-zero modulator gap dimension.
08/07/14
20140218779
Image display device
An image display device includes an image forming device, collimating optical system, and optical device, with the optical device including a light guide plate, first diffraction grating member and second diffraction grating member which are made up of a volume hologram diffraction grating, and with central light emitted from the pixel of the center of the image forming device and passed through the center of the collimating optical system being input to the light guide plate from the near side of the second diffraction grating member with a certain angle. Thus, the image display device capable of preventing occurrence of color irregularities, despite the simple configuration, can be provided..
08/07/14
20140218778
Hologram
A substrate includes a diffracting structure providing a hologram (20, 6). The diffracting structure encodes a holographic image so that thatholographic image is produced in response to reference light being incident on a major surface of the substrate at an angle of incidence with respect to the said major surface of the substrate, wherein the angle of incidence is no more than 20°..
08/07/14
20140218422
Display device and operating method thereof
A display device according to embodiments of the present disclosure includes a determination unit to determine a display mode, a light generator to selectively irradiate a 2d light or a hologram 3d light, a spatial light modulator to selectively display a 2d image or a hologram 3d image, and a control unit that controls the light generator to selectively irradiate the 2d light or the hologram 3d light and controls the spatial light modulator to modulate the 2d light or the hologram 3d light irradiated from the light generator to display the 2d image or the hologram 3d image according to the display mode determined by the determination unit.. .
07/31/14
20140211287
Apparatus and method for displaying transmission and reflection holograms
There is herein described apparatus and methods for displaying holograms. At least one aspect of the invention is to provide a compact and self-contained lighting system for a display hologram, which can produce high quality images and which is substantially insensitive to stray light..
07/31/14
20140211286
Apparatus and method for generating digital hologram
Disclosed are an apparatus and a method for generating a digital hologram for reproducing a 3d stereoscopic image, and more particularly, an apparatus and a method for generating a digital hologram, which generate the digital hologram by receiving a depth information pre-processing process of generating first depth map information constituted by a first depth level and second depth map information constituted a second depth level by receiving color image information from an imaging unit.. .
07/31/14
20140210942
Fast processing of information represented in digital holograms
Techniques for fast processing of information represented in digital holograms to facilitate generating and displaying 3-d holographic images representative of a 3-d object scene are presented. A holographic generator component (hgc) can receive or generate information representing a 3-d object scene.
07/24/14
20140204437
Dynamic aperture holographic multiplexing
Systems and methods for dynamic aperture holographic multiplexing are disclosed. One example process may include recording a set of holograms in a recording medium by varying both the reference beam angular aperture and the signal beam angular aperture.
07/17/14
20140198364
Three-dimensional imaging system based on stereo hologram
A three-dimensional imaging system based on a stereo hologram is disclosed. Images composed of sub-images having the same vertical-horizontal resolutions which are generated at plural image projection modules having a two-dimensional arrangement structure are projected to a prism array plate or a transmission-type diffusion plate, and are converted into light points, i.e., image points through a microlens array unit.
07/17/14
20140198363
Method for generating a point light source in a plane at an arbitrary location using a dynamic hologram
This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for providing a display device. In one aspect, the display device may include a light source system, a programmable hologram system, a light-turning layer and a control system.
07/10/14
20140193748
Visible light photoinitiating system for preparing high diffraction efficiency hologram optical polymer material
The present invention provides a visible light photoinitiating system for preparing a holographic photopolymer material with high-diffraction efficiency. The photoinitiating system comprises a photosensitizer and a co-initiator, and its mechanism is that the photosensitizer transforms from ground state to excited state after absorbing photons, and then interacts with the co-initiator through transfer of electrons and protons, which produces an alkyl (or aryl) free radical r and a ketyl radical k; wherein the free radical r initiates the addition polymerization of monomers that are capable of free radical polymerization, whereas the radical k inhibits the chain propagation of the macromolecular free radicals to a certain degree due to the steric hindrance effect, and thus delays the gelation time of the photopolymerization, which helps to increase the phase separation between the polymer and the functional components.
07/10/14
20140192389
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.
07/10/14
20140192146
Apparatus and method for displaying hologram image
Provided is an apparatus and method for displaying a hologram image that may display a hologram image created by tracking a position of a pupil of a user using an acquired user image, tracking a position of a light source of a reflection hologram image that is reflected from appearance of the user, and by correcting a position of a light source of a display hologram image based on the position of the pupil of the user.. .
07/03/14
20140185421
Optical information reproducing apparatus and optical information reproducing method
A method of calculating a reliability effective in a decoding process of hologram. An optical information reproducing apparatus that reproduces information with the use of the holography includes an image acquisition unit that reproduces two-dimensional data from a hologram disc, an image equalization unit that makes the two-dimensional data equal to target data having a target pr characteristic, a soft output decoding unit that decodes output data of the image equalization unit on the basis of the pr characteristic, and outputs a decoded result having a reliability, and an error correction unit that conducts an error correction of the data on the basis of the decoded result..
07/03/14
20140185115
Integrated hologram optical device
An integrated hologram optical device, a method of manufacturing the same, and an integrated hologram recording apparatus are provided. The integrated hologram optical device includes a two-dimensional (2d) array of a plurality of hogels.
06/26/14
20140177018
Projection-type footage display device
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).
06/26/14
20140177017
Image display device
The image display device includes an output unit which outputs an image information light including image information; and a hologram element on which the image information light is incident, and projects the image information light via the hologram element on a retina to make a user visually recognize an image. The hologram element includes a first hologram area and a second hologram area.
06/26/14
20140176671
Apparatus for displaying a hologram
An apparatus for displaying a hologram comprises: a hologram display panel that represents light having the hologram images to an observer; a detecting camera that decides a position of the observer; a deflector that forms a prism pattern to refract the light corresponding to the detected position of the observer; and a deflector driver that supplies a driving voltage corresponding to a inclined angle for forming the prism pattern, wherein the deflector includes: a plurality of first electrodes running to a first direction and divided into a plurality of electrode groups; a plurality of connection electrodes running to a second direction crossing with the first direction, and connecting same numbered first electrodes of the electrode groups, wherein each end of the connection electrodes forms a pad portion; and a second electrode facing to the plurality of the first electrodes with a liquid crystal cell therebetween.. .
06/26/14
20140176661
System and method for surgical telementoring and training with virtualized telestration and haptic holograms, including metadata tagging, encapsulation and saving multi-modal streaming medical imagery together with multi-dimensional [4-d] virtual mesh and multi-sensory annotation in standard file formats used for digital imaging and communications in medicine (dicom)
The invention relates generally to a medical apparatus and method of using the same for receiving and transmitting streaming medical imagery and audio signals in real time, and allowing remote operators to annotate and telestrate with same. The invention acquires streaming medical imagery and audio signals through a telestreamer input device, allowing users to electronically collaborate, generally by telestrating, annotating, and sketching image overlays on streaming medical imagery.
06/19/14
20140168735
Multiplexed hologram tiling in a waveguide display
Embodiments related near-eye display devices having angularly multiplexed holograms are disclosed. One disclosed embodiment provides a near-eye display device including an image source, a waveguide, and a controller.
06/19/14
20140168213
Single pass hogel rendering
A system and method are provided for rendering a hogel in a single rendering pass. Data representative of a geometric shape having multiple vertices are processed to determine if the geometric shape has at least one vertex on a first side and at least one vertex on a second side of a hologram plane.
06/19/14
20140166762
Foil composite card
Composite cards formed in accordance with the invention include a security layer comprising a hologram or diffraction grating formed at, or in, the center, or core layer, of the card. The hologram may be formed by embossing a designated area of the core layer with a diffraction pattern and depositing a thin layer of metal on the embossed layer.
06/12/14
20140160913
Optical information recording and reproduction device, optical information recording device, method for recording and reproducing optical information and optical information recording medium
The present invention provides a technology which estimates the most suitable cure time which changes with the environment when recording a hologram and adjusts the cure time in real time, thereby enabling a suitable pre-cure or post-cure. When irradiating an optical information recording medium with cure light, the light transmitted from the optical information recording medium is detected by a detector and the irradiation time is adjusted by continuing irradiation until the intensity of the transmitted light detected exceeds a prescribed reference value..
06/12/14
20140160588
Image displaying apparatus and optical apparatus
The image displaying apparatus includes an image production apparatus, a first light conduction section and a second light conduction section. The first light conduction section includes a first light conduction plate which propagates part of incident light thereto by total reflection in the inside thereof and emits the propagated light, and a reflection type volume hologram diffraction grating disposed on the first light conduction plate.
06/12/14
20140160543
Holographic imaging optical device
In relation to a field of creating and processing a digital image, a compact portable device for generation and observation of dynamic and static holograms is provided. A system including a holographic display may be based on reconstruction and transmission of a wavefront encoded with a spatial light modulator while preserving information about a wave amplitude and a phase.
06/12/14
20140160542
Novel method of 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.
06/12/14
20140160541
Holographic image identification apparatus and method, and holographic image selective reconstruction apparatus, method and system
Disclosed is an apparatus for identifying authenticity of a holographic image, which is capable of identifying the authenticity by comparing a holographic image reconstructed by irradiating light having the same characteristic as an irradiation characteristic of a first reference beam used in generating the holographic image with an original image. Accordingly, since an image or a pattern is recorded by using a reference beam having a specific angle and a specific laser wavelength band in making a hologram, replication or copying for forgery is prevented from being easy..
06/12/14
20140160540
Identification medium
An identification medium cannot be reused when an attempt has been made to remove it from an object by using solvent. A cholesteric liquid crystal layer subjected to a hologram processing is formed while contacting a cop (cycloolefin polymer) layer.
06/05/14
20140154614
Method for preparing colorful three-dimensional hologram based on holographic polymer dispersed liquid crystal grating
A method for preparing a colorful three-dimensional hologram based on holographic polymer dispersed liquid crystal gratings comprises: first, in a 441.6 nm laser interference field, preparing with holography a holographic master (7) which stores the reflected (or transmitted) light wave information (amplitude and phase) of an object captured; then using an object light (6) to irradiate the holographic master at a bragg angle to generate a diffraction light (8); and using the diffraction light and a reference light (10) to simultaneously irradiate a holographic base board (9) comprising a photosensitizer, a co-initiator, a monomer capable of free radical polymerization , and a liquid crystal so that, when total optical paths of the two laser beams reaching the holographic base board are equivalent to each other, optical coherence occurs between the two laser beams on the holographic base board, thereby obtaining a colorful three-dimensional hologram based on holographic polymer dispersed liquid crystal gratings from which an image of the captured object can be observed in the sunlight.. .
06/05/14
20140152558
Direct hologram manipulation using imu
Methods for controlling an augmented reality environment associated with a head-mounted display device (hmd) are described. In some embodiments, a virtual pointer may be displayed to an end user of the hmd and controlled by the end user using motion and/or orientation information associated with a secondary device (e.g., a mobile phone).
05/29/14
20140146373
Apparatus and method for generating hologram pattern
Provided is an apparatus and method for generating a hologram pattern with a reduced amount of computation. The apparatus may include a reference depth layer setting unit configured or having a capacity to set a reference depth layer using data associated with a three-dimensional (3d) object, a first hologram pattern generating unit configured to generate a first hologram pattern corresponding to the 3d object in the reference depth layer, and a second hologram pattern generating unit configured to generate a second hologram pattern in a hologram plane using the first hologram pattern..
05/29/14
20140146133
Transparent holographic display with dynamic image control
Generally, this disclosure provides systems and methods for generating three dimensional holographic images on a transparent display screen with dynamic image control. The system may include a transparent display screen that includes an array of pixels; a driver circuit configured to control each of the pixels in the array of pixels such that the transparent display screen displays an interference fringe pattern, the interference fringe pattern associated with a hologram; and a coherent light source configured to illuminate the transparent display screen with coherent light, wherein transformation of the coherent light by the interference fringe pattern generates a three dimensional holographic image..
05/22/14
20140141181
Process for forming rainbow and hologram images on papers
A process is provided for embossing a fibrous sheet with rainbow or hologram images, without the use of elevated temperatures, or the use of pre-wetting or softening agents.. .
05/15/14
20140133000
Photorefractive polymer composite, and photorefractive device and hologram display device including the same
Provided are a photorefractive polymer composite, and a photorefractive devices and hologram display device including the same. The photorefractive polymer composite includes a photoconductive polymer matrix, a nonlinear optical chromophore, a plasticizer, and a graphite-based photocharge generator..
05/15/14
20140132999
Optical head for hologram optical apparatus and method of operating the same
An optical head for a hologram optical apparatus and a method of operating the same are provided. The optical head for the hologram optical apparatus includes a reference light unit for guiding reference light, a signal light unit for guiding signal light, and a light source unit for providing 1 the reference light and the signal light to the reference light unit and the signal light unit, wherein the reference light unit and the signal light unit are stacked.
05/15/14
20140132998
Holographic imaging
Technologies are generally described for generating a holographic image on a transparent screen such that a user can view another scenery image though the screen along with the generated holographic image. Example devices may include an ultraviolet light irradiation unit configured to irradiate an ultraviolet light towards a hologram generating unit.
05/15/14
20140132710
Holographic image generation and reconstruction
Technologies are generally described for generating and recording holograms of an object using a plurality of light sources and an array of image sensors arranged to surround the object. In various examples, an apparatus may be configured to irradiate a plurality of light beams from multiple light sources to a corresponding number of beam splitters, which are configured to generate a first portion of the light beams that can be irradiated on the object, and a second portion of the light beams that can be reflected by a mirror unit to generate reference beams.
05/15/14
20140131990
Method of processing a security item
There is disclosed a method of processing a security item 1. The security item comprises a holographic security feature 2 having at least one metallised layer.
05/08/14
20140127611
Photopolymer composition for recording hologram, and photopolymer layer and hologram recording media including the same
A photopolymer composition includes a polymer binder; a monomer for holographic recording; a photoinitiation system including an electron acceptor, at least one of an electron donor and a hydrogen atom donor, and a dye-sensitizer; and a solvent. The monomer for holographic recording includes n-acryloylthiomorpholine..
05/08/14
20140125763
3d led output device and process for emitting 3d content output for large screen applications and which is visible without 3d glasses
Some embodiments of the invention include a novel process for emitting 3d content that is visible without 3d eye-wear. In some embodiments, the process utilizes a 3d led output device which emits 3d content that is visible without 3d eye-wear.
05/01/14
20140118807
Holographic reconstructing device and application adapted to portable electronic products
Disclosed are a holographic reconstructing device and its application for portable electronic products. The holographic reconstructing device includes a compound hologram (9), a hologram seat (91), and a rebuilding light source (12).
05/01/14
20140118508
Digital hologram display device
The present disclosure relates to a digital hologram display device displaying 3d image as a hologram by using a complex modulation. The digital hologram display device comprising a spatial light modulator including a first pixel outputting a first modulation light by modulating a phase of a first plane-polarized light and a second pixel outputting a second modulation light by modulating the phase of the first plane-polarized light, wherein the second pixel is adjacent to the first pixel; and a light combiner changing a path of the first modulation light outputted from the first pixel so that the path of the first modulation light corresponds to a path of the second modulation light outputted from the second pixel for combining the first modulation light with the second modulation light, wherein a phase of the first modulation light is different from a phase of the second modulation light..
05/01/14
20140117260
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.
04/24/14
20140111837
Multi-layer body, method for producing it, and production of forgery-proof documents using said multi-layer body
A multi-layer body (1, 21) is described, having a carrier film (7), a release layer (8), an embossed hologram layer (9) and a vapour-deposited reflection layer (10), a uv-activatable adhesive layer (4) with at least one partially activated uv adhesive-layer zone (5, 6) and a lower layer, wherein the cured adhesive regions (5) connect the lower layer and parts of the embossed hologram layer to one another inseparably, the lower layer being a transparent polycarbonate film (2), while the cured adhesive region (5) is arranged on the periphery of the uncured adhesive region (6) of the respective adhesive-layer zone (4) and surrounds it in a frame-like manner. In addition, the production of forgery-proof documents using the multi-layer body (1, 21) is described, in which the uncured adhesive-layer region (6) of said multi-layer body (1, 21) is partially cured with light through an information-carrying optical mask (13) at the user's premises, after which the carrier film is pulled off together with the release layer and the non-bonded embossed hologram layer regions (11), an upper protective film (18) is applied to the individualized embossed hologram layer (9), and said film composite is hot-pressed together with further films (19)..
04/24/14
20140110931
Printing diffraction gratings on paper and board
A method and an apparatus for forming a surface relief microstructure, especially an optically variable image on a paper substrate are provided, the method comprising the steps of: a) applying a curable composition to at least a portion of the frontside of the paper substrate; b) contacting at least a portion of the curable composition with surface relief microstructure, especially optically variable image forming means; c) curing the composition by using at least one uv lamp (1, 2, 3) which is arranged on the backside of the paper substrate; d) optionally depositing a layer of a transparent high refractive index material and/or a metallic layer on at least a portion of the cured composition, wherein the lamp (1, 2, 3) having emission peak(s) in the uv-a and near vis range and the curable composition comprises at least a photoinitiator which absorbs in the uv-a region and preferably in the near vis range. A paper product obtainable uses the method and an apparatus for forming a surface relief microstructure on a paper substrate.
04/24/14
20140110886
Method of production of a holographic sensor
A method for the production of a holographic sensor which comprises a support medium supporting a reflection hologram wherein the support medium interacts with its physical or chemical environment to create an optical response which is a change in one or more optical properties of the hologram, the method comprising the steps of: a) introducing a colloidal dispersion of a recording material into the support medium; and b) ablating the colloidal particles of the recording material using a pulsed laser to form the holographic element in the support medium. The method of production can be used to introduce a reflection holographic grating into a hydrophobic support medium, in particular, polydimethylsiloxane (pdms), which possesses an extraordinary ability to swell in the presence of both liquid and/or gaseous low molecular weight hydrocarbons and organic solvents and thus has many applications as a holographic sensor..
04/17/14
20140104664
Optically addressable spatial light modulator divided into plurality of segments, and holographic three-dimensional image display apparatus and method using the light modulator
Provided are an optically addressable spatial light modulator (oaslm) divided into a plurality of segments, and an apparatus and method for displaying a holographic three-dimensional (3d) image using the oaslm. The holographic 3d image display apparatus includes a first light source which emits a write beam, an electric addressable spatial light modulator (easlm) which modulates the write beam emitted from the first light source according to hologram information regarding a 3d image, a second light source which emits a read beam, an oaslm which receives the write beam modulated by the easlm and modulates the read beam emitted from the second light source according to hologram information included in the modulated write beam, a scanning optical unit which projects the write beam modulated by the easlm onto the oaslm, and a fourier lens which focuses the read beam modulated by the oaslm onto a predetermined space to form the 3d image..


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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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