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Hologram patents

      

This page is updated frequently with new Hologram-related patent applications.




 Optical information device and optical information processing method patent thumbnailOptical information device and optical information processing method
An optical information device and an optical information processing method which can perform high-speed and accurate positioning are provided. An optical information device which reproduces information from and/or records information on an optical information recording medium on which interference patterns between signal light and reference light are recorded as a hologram includes: an optical system which emits an optical beam; an aperture unit which passes at least a portion of reproduced light acquired when the optical beam from the optical system is radiated onto the optical information recording medium; a first detection unit which detects at least a portion of the reproduced light; a second detection unit which detects the position of the aperture unit; and a control unit which, based on a first signal acquired from the first detection unit and a second signal acquired from the second detection unit, controls the position of the aperture unit..
Hitachi Consumer Electronics Co., Ltd.


 System for producing ultra-thin color phase hologram with metasurfaces patent thumbnailSystem for producing ultra-thin color phase hologram with metasurfaces
A device for producing a subwavelength hologram. The device comprises a metasurface layer attached to a substrate.
Purdue Research Foundation


 Image display device and image display medium patent thumbnailImage display device and image display medium
An image display device includes image cells arranged two-dimensionally. Each image cell has a hologram layer.
Toppan Printing Co., Ltd.


 Illumination apparatus using a coherent light source patent thumbnailIllumination apparatus using a 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).
Dai Nippon Printing Co., Ltd.


 Systems, devices, and methods for angle- and wavelength-multiplexed holographic optical elements patent thumbnailSystems, devices, and methods for angle- and wavelength-multiplexed holographic optical elements
Systems, devices, and methods for combined angle- and wavelength multiplexing in holographic optical elements (“hoe”) are described. An angle- and wavelength-multiplexed hoe includes multiple angle-multiplexed sets of wavelength-multiplexed holograms.
Thalmic Labs Inc.


 Holographic display apparatus and holographic display  providing enhanced image quality patent thumbnailHolographic display apparatus and holographic display providing enhanced image quality
A holographic display apparatus includes: a light source configured to emit light; a spatial light modulator configured to sequentially generate hologram patterns for modulating the light and to sequentially reproduce frames of hologram images based on the hologram patterns; and a controller configured to provide hologram data signals to the spatial light modulator, the hologram data signals being used to sequentially generate the hologram patterns. The controller is configured to further provide, to the spatial light modulator, diffraction pattern data signals for forming periodic diffraction patterns for adjusting locations of the hologram images to be reproduced on a hologram image plane, the diffraction pattern data signals being configured to move the periodic diffraction patterns on the spatial light modulator along a predetermined direction for each of the frames..
Samsung Electronics Co., Ltd.


 Apparatus and  recording fresnel holograms patent thumbnailApparatus and 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, receive the incoherent electromagnetic wave emitted toward the object, mask the received incoherent electromagnetic wave according to the displayed mask, and produce a masked electromagnetic wave. The apparatus also includes an image recording device configured to capture an image of the masked electromagnetic wave, and a processing device configured to convert the image of the masked electromagnetic wave into the hologram of the object.
Celloptic, Inc.


 System,  ultra-resolved ultra-wide field-of-view multispectral and hyperspectral holographic microscopy patent thumbnailSystem, ultra-resolved ultra-wide field-of-view multispectral and hyperspectral holographic microscopy
There is disclosed a novel system and method for achieving ultra-resolution, ultra-wide field-of-view multispectral and hyperspectral holographic microscopy and quantitative phase contrast microscopy. In an embodiment, the method comprises: providing a stationary illumination source; acquiring a plurality of low-resolution holograms of an image subject from different locations utilizing a subpixel sensor-scanning synthetic aperture mechanism whereby a detector scanning translationally, radially and/or rotationally; processing the acquired holograms utilizing a processing algorithm corresponding to the scanning motion of the detector used to acquire the holograms; and reconstructing a subpixel ultra-resolution image of the image subject based on the processed holograms; whereby, a desired synthetic aperture is achieved without loss of resolution.

 Image processing method patent thumbnailImage processing method
Calculating a sum of the plurality of spectra to obtain the synthetic spectrum; multiplying the synthetic spectrum by a weight function associated with the spectrum space to obtain a normalized synthetic spectrum, each function value of the weight function corresponding to a respective position in the spectrum space and being associated with distribution of the plurality of spectra in the spectrum space; and performing the inverse fourier transform operation on the normalized synthetic spectrum to result in a normalized synthetic hologram.. .

 Beam divergence and various collimators for holographic or stereoscopic displays patent thumbnailBeam divergence and various collimators for holographic or stereoscopic displays
A holographic display with an illumination device, an enlarging unit and a light modulator. The illumination device includes at least one light source and a light collimation unit, the light collimation unit collimates the light of the at least one light source and generates a light wave field of the light that is emitted by the light source with a specifiable angular spectrum of plane waves, the enlarging unit is disposed downstream of the light collimation unit, seen in the direction of light propagation, where the enlarging unit includes a transmissive volume hologram realising an anamorphic broadening of the light wave field due to a transmissive interaction of the light wave field with the volume hologram, and the light modulator is disposed upstream or downstream of the anamorphic enlarging unit, seen in the direction of light propagation..
Seereal Technologies S.a.


Method for manufacturing diffractive optic element and image display device

A method for manufacturing a diffractive optic element by exposing hologram recording material includes exposure processing that divides a coherent beam radiated from one beam source into an object beam and a reference beam, and irradiates the hologram recording material with an exposure beam by interfering the object beam with the reference beam. In the exposure processing, an optic element, which adjusts beam intensity distribution of the exposure beam with which the hologram recording material is irradiated, is arranged in a path of one or both of the object beam and the reference beam..
Seiko Epson Corporation

Display device, in particular a head-mounted display, based on temporal and spatial multiplexing of hologram tiles

The invention relates to a display device, in particular a head-mounted display or hocular, having a spatial light modulator and a controllable light-deflecting device for generating a multiple image of the spatial light modulator, which consists of segments, the multiple image being produced at least with a predefinable number of segments which determines the size of a visible area within which a 3d-scene holographically encoded in the spatial light modulator can be reconstructed for observation by an eye of an observer.. .
Seereal Technologies S.a.

Optical information reproduction device and optical information reproduction method

Provided are an optical information reproduction device and a method therefor with which the influence of reference light reflected from the surface of a disk can be reduced, thereby enabling data to be reproduced in a stable manner in an optical information reproduction device that uses holography. The information reproduction device, which reproduces from a recording medium information that has been recorded on the recording medium by the formation of a hologram, is equipped with: a light output unit that emits laser light; an optical system that generates reference light from the laser light emitted from the light output unit; an objective lens that reproduction signal light reproduced by the reference light with which the recording medium has been irradiated enters; a light detector that receives the reproduction signal light propagated by the objective lens; a medium-reflected light reduction unit that reduces the amount of medium-reflected light (generated when the recording medium reflects the reference light) with which the light detector is irradiated; and a control unit that controls the operation of the information reproduction device..
Hitachi Consumer Electronics Co., Ltd.

Hologram recording and playback device and playback position deviation detection method

A hologram recording and playback device and a playback position deviation detection method to detect the relative position deviation between the hologram and reference light during playback with high sensitivity. The hologram recording and playback device records as a servo page, signal light added with two-dimensional pattern data having a cycle induced by the spatial modulator in a least a portion of the data.
Hitachi-lg Data Storage, Inc.

Hologram for alignment

An example hologram device may include a target holographic view of an encoded holographic image representing an alignment target; and a plurality of non-target holographic views of the encoded holographic image, each non-target holographic view indicating a position relative to the target holographic view.. .
Hewlett-packard Development Company, L.p.

System and a quantitative sample imaging using off-axis interferometry with extended field of view or faster frame rate

The present invention provides a sample inspection and quantitative imaging system and method for performing off-axis interferometric imaging while enabling to record off-axis holograms in an extended field of view (fov) than possible using a given camera and imaging setup, and thus to enlarge (e.g. Double, triple, or even more than this) the interferometric fov, without changing the imaging parameters, such as the magnification and the resolution..
Ramot At Tel-aviv University Ltd.

Holographic picking picking products utilizing a holographic picking system

A holographic picking system directs a person wearing a visor capable of projecting holographic images through the process of finding items within a storage facility and placing them in a bin, cart, or pallet that is used to transport the items within the storage facility. The system uses holograms to display where the person should move, where the picking location is, how many items to pick, and the precise position where the items picked should be placed on the bin, cart, or pallet.
Real Picking, Llc

Comparing extracted card data using continuous 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.

Digital infrared holograms

Embodiments are directed to an apparatus for creating a scene comprising: a plurality of micro-mirrors configured to rotate between an off position and at least two on positions to generate a plurality of holograms, and a processor configured to select positions for the micro-mirrors based on an input specification of the scene.. .
Raytheon Company

System and holography-based fabrication

A system and method may utilize holography to facilitate fabrication techniques such as 3d printing and lithography. The system may include a light source, a hologram of an original object or lithographic pattern recorded in a holographic medium, and a target such as a reservoir of photosensitive material or a photosensitive material attached to a substrate.
Wasatch Photonics, Inc.

Advanced 4-dimensional signal and device testing using circuit-state recognition

The fast fourier transform describes functions into different dimensions or coordinates such as cartesian to spherical. For example, a function could be represented in the domains of time and frequency.
Attofemto, Inc.

Chip for transdermal emission or augmentation of energy

A hologram chip may be programmed to emit and/or augment energy tuned to interact with bodily functions through transdermal contact. The chip may be programmed by using a pair of tesla pancake coils, each coupled to a spherical electrode and driven to create an energetic field between the electrodes.

Recording holographic data on reflective surfaces

Lighting information comprising at least the reflectance data of a plurality of regions of an object surface is generated and printed out as a series of relightable holograms. Each of the printed holograms comprises the reflectance data of a corresponding region of the object.
Otoy, Inc.

Applying holographic effects to prints

Lighting information comprising at least the reflectance data of a plurality of regions of an object surface is generated and printed out as a series of relightable holograms. Each of the printed holograms comprises the reflectance data of a corresponding region of the object.
Otoy, Inc.

Relightable holograms

Lighting information comprising at least the reflectance data of a plurality of regions of an object surface is generated and printed out as a series of relightable holograms. Each of the printed holograms comprises the reflectance data of a corresponding region of the object.
Otoy, Inc.

Light diffraction layer laminated sheet and producing card

Provided are: a light diffraction layer laminated sheet which enables easy production of a card that has a light analysis structure; and a card. A light diffraction layer laminated sheet material (20a) which forms a part of a laminated structure of a card (1) by being laminated on top of a card base material (10).
Dai Nippon Printing Co., Ltd.

Methods for improving performance of holographic glasses

The improvement of the performance of holographic glasses with recorded holograms as measured by a figure of merit of the holographic glasses is disclosed. The improvement in the figure of merit of the holographic glasses is obtained at least in part with the addition of arsenic in the formation of the holographic glasses.
Pd-ld, Inc.

Sensor with high-sensitivity optical fiber

An optical fiber sensor for locating an excitation in proximity to an optical fiber assembly comprises: a laser assembly configured to emit n laser beams indexed i with n>1, of respective emission wavelength λi, an optical fiber assembly comprising n successive sections indexed i, an optical system configured to: inject the laser beams, receive n signal beams indexed i respectively of wavelengths λi, generate n reference beams indexed i respectively of wavelengths λi, produce n interference areas indexed i, a holographic detector comprising: a liquid crystal light valve that it at least partially covers the interference areas, and is configured to produce n holograms indexed i from, respectively, n interference areas, at least one optical detector configured to detect n output optical signals indexed i, a processing unit adapted to identify the section of the fiber assembly situated in proximity to the excitation to be located.. .
Centre National De La Recherche Scientifique

Holographic high power illumination distribution system

An illumination distribution system for distributing high power illumination to a set of projectors. The system includes a display element, such as a spatial light modulator (slm), receiving light from a laser.
Disney Enterprises, Inc.

Laminated body having hologram

A card 1 includes: a card substrate 10; a transparent hologram layer 20 on a part of the substrate 10; and a surface layer 30 comprising a print layer 40 on the substrate 10 and the layer 20, is formed by a transparent material, and is printed with a color similar to the upper surface of the substrate 10. When a card surface 1a is viewed from the normal line, the layer 40 has the same color shading compared to the upper surface of the substrate 10, at the edge portion 22 of the layer 20.
Dai Nippon Printing Co., Ltd.

Hologram recording and reproducing apparatus

A disk conveyance mechanism for a hologram recording and reproducing apparatus includes a first conveyance mechanism for conveying a disk medium 2 to a position where a spindle motor 4 is situated with the disk medium 2 loaded onto a tray 6, a second conveyance mechanism in which the spindle motor 4 is held and moved in the rotational axis direction of the spindle motor 4 to take out the disk medium 2 from the tray 6 and load the disk medium 2 onto spindle motor 4, a third conveyance mechanism for conveying the disk medium 2 to the position where recording and reproducing are performed by the pickup 1 with the disk medium 2 loaded onto the spindle motor 4. The first and third conveyance mechanisms convey the disk medium 2 in a direction substantially parallel to the surface of the medium..
Hitachi-lg Data Storage, Inc.

Illumination device, projection apparatus and projection-type image display apparatus

An optical device including a hologram recording medium that can reproduce an image of a reference member and an irradiation unit that emits a coherent light beam to the optical device. The irradiation unit includes a light source for emitting a coherent light beam and a scanning device capable of adjusting a reflection angle of the coherent light beam emitted from the light source and that makes a reflected coherent light beam scan the hologram recording medium.
Dai Nippon Printing Co., Ltd.

Projector provided with hologram screen

The purpose of the present invention is to project a hologram screen to one of a variety of projectors by adjusting the hologram screen to an image size of the one of the variety of projectors so as to approximately correspond to each other so that the hologram screen is formed in front of the one of the variety of projectors, and a hologram projector is separately turned on or off for general use.. .

Projection type image display apparatus

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).
Dai Nippon Printing Co., Ltd.

User-based context sensitive hologram reaction

A system and method are disclosed for displaying virtual content. When a user is settled in a given geographic area, a full version of the content may be displayed at user-defined or processor-defined location.

Method and forming a visible image in space

A device that creates visible light in space comprises of a light source and optics system that result in irradiated visible spectrum light rays with a low intensity such that the light is not visible by the normal observer. Multiple rays of visible-spectrum low-intensity non-visible light intersect.

Holographic microscope and data processing high-resolution hologram image

The present invention can realize both a transmission type and a reflection type, and provides a holographic microscope which can exceed the resolution of the conventional optical microscope, a hologram data acquisition method for a high-resolution image, and a high-resolution hologram image reconstruction method. In-line spherical wave reference light (l) is recorded in a hologram (ilr) using spherical wave reference light (r), and an object light (oj) and an illumination light (qj) are recorded in a hologram (ijoqr) using a spherical wave reference light (r) by illuminating the object with an illumination light (qj, j=1, .
cj

Hologram recording and reproducing apparatus

A disk conveyance unit 3 conveys the disk medium 2 to a position where recording and reproducing are performed by the pickup 1 with the spindle motor 4 held. The disk conveyance unit 3 includes first movement mechanisms 22 and 24 for moving a first conveyance frame 30 with respect to fixed frames 10 and 20 and second movement mechanisms 34 and 36 for moving a second conveyance frame 40 holding a spindle motor 4 with respect to the first conveyance frame 30.
Hitachi-lg Data Storage, Inc.

Microscope, method and computer program for obtaining quantitative phase images by means of digital holographic microscopy

A microscope, method and computer program for obtaining quantitative phase images by digital holographic microscopy. The microscope includes: a coherent light source (1) and a beam splitter (3) for generating an object beam (lo) for illuminating a sample, and a reference beam (lr); an optical system with a main optical path making up a telecentric afocal system, and a reference optical path; and recording means (12) recording a hologram of said sample in the image plane of the optical system.
Universidad Nacional De Colombia

Incoherent fluorescence digital holographic microscopy using transmission liquid crystal lens

A new optical arrangement that creates high efficiency, high quality fresnel incoherent correlation holography (finch) holograms using transmission liquid crystal grin (tlcgrin) diffractive lenses has been invented. This is in contrast to the universal practice in the field of using a reflective spatial light modulator (slm) to separate sample and reference beams.

Method for measuring three-dimensional profile of specular object by fringe projection

A method using fringe projection to describe the three-dimensional profile of a specular object is presented and has steps of: providing a diffraction grating formed by exposing and developing a hologram and having at least two sets of interference fringes; guiding a conjugate of the reference light generated from a conjugate light source to pass through the diffraction grating, in order to generate a real image with a long depth of field, a wide convergent angle, and a sinusoidal distribution light intensity; projecting this real image onto an inspected specular object; using an image capture device to capture the intensity distribution of the real image on the inspected specular object so as to obtain an image signal; and using an image processor to analyze the image signal so as to identify the profile of the inspected specular object.. .
National Sun Yat-sen University

Hologram reproducing apparatus and hologram reproducing method

The purpose of the present invention is to provide a hologram reproducing apparatus and a hologram reproducing method, which are suitable for reproducing hologram. The purpose can be achieved by means of a hologram reproducing apparatus, which reproduces information signals by irradiating an optical information recording medium with reference light, and a hologram reproducing method for the hologram reproducing apparatus.
Hitachi Consumer Electronics Co., Ltd.

Hologram module, display device having the same and wearing device having the same

A hologram module includes a phosphor layer and a rainbow hologram sheet. The phosphor layer has a phosphor array structure.
Wistron Corp.

System and generating occlusion-culled hologram at high speed using omnidirectional angular spectrum

A system and method for generating an occlusion-culled hologram at a high speed using an omnidirectional angular spectrum in which it is possible to uniformly maintain a hologram generation speed regardless of the sampling number of an object and increase the three-dimensional (3d) effect of a hologram image. The system includes a omnidirectional angular spectrum generation module configured to receive geometric information of an object and generate an occlusion-culled omnidirectional angular spectrum based on the received geometric information, and a hologram generation module configured to generate a hologram based on the omnidirectional angular spectrum provided from the omnidirectional angular spectrum generation module and the positional information and the directional information of a hologram provided from the outside..
Electronics And Telecommunications Research Institute

Illuminator for multi-focus confocal imaging and optimized filling of a spatial light modulator for microscopy

One exemplary aspect relates to an optical system for illuminating a multi-focus confocal imager. This new illuminator has benefits such as improved throughput and field flatness.
Intelligent Imaging Innovations, Inc.

Nonlinear optical dye, photorefractive material composition, photorefractive substrate and hologram recording medium

In the above general formula (1), each of x1, x2, x3 and x4 independently represents a hydrogen atom, an alkyl group having a carbon number of 1 to 6, a halogen atom, a hydroxyl group, a nitro group, a cyano group, or a methylsulfonyl group. In the present invention, it is preferred that each of x1, x2, x3 and x4 independently represents a hydrogen atom, an alkyl group having a carbon number of 1 to 6, or a halogen atom.

Method for manufacturing a tool plate for treating a printing substrate, tool plate and embossing die

A method for manufacturing a tool plate for treating a printing substrate includes pressing a master die having a surface structure and a tool plate blank coated with a cured layer against one another in a pressing nip, trapping a curable layer therebetween. As a consequence, the curable layer is applied to the cured layer of the blank and receives a negative of the surface structure in a molding process.
Heidelberger Druckmaschinen Ag

Table-top type hologram projection apparatus using aspheric mirror

Provided is a hologram projection apparatus using an aspheric mirror, the apparatus including a spatial light modulator (slm), a first mirror, a motor, and a second mirror, wherein the first mirror is configured to reflect modulated light output by the slm, the motor is configured to rotate the first mirror, the second mirror is configured to reflect the modulated light reflected from the rotated first mirror, and the modulated light reflected from the second mirror, based on a degree of rotation of the first mirror, forms a consecutive viewing window in a horizontal direction.. .
Electronics And Telecommunications Research Institute

Hologram projection apparatus using risley prism

A hologram projection apparatus using risley prism is provided, the apparatus including a spatial light modulator (slm) configured to output light incident from a light source through modulation into a hologram image, a light deflector configured to deflect the light output by the slm according to a location of a pupil of a user, and a fixed-focus lens configured to project the hologram image on a focal plane using the deflected light.. .
Electronics And Telecommunications Research Institute

Method and correcting distortion of 3d hologram

Provided is a method and an apparatus for correcting a distortion of a three-dimensional (3d) hologram, in which the method is performed by the apparatus and includes generating a sliced two-dimensional (2d) section of a hologram by slicing the hologram while performing translation in an optical axis direction, obtaining a sharp sliced image of the hologram from a sequence of images of generated sliced 2d sections using a focusing function of a camera, and analyzing a distortion of the obtained sliced image, and using such a method and apparatus may enable correction of a distortion of a 3d hologram independently from a display structure.. .
Electronics And Telecommunications Research Institute

Sensor unit

A sensor unit (100) provided with a substrate (101), a plurality of light-receiving units (102) that are provided on the substrate (101) and detect light, and a diffraction grating layer (103) that is provided on the substrate (101) and the light-receiving units (102) and has at least two diffraction means for diffracting light of corresponding wavelengths and condensing the light onto the light-receiving units, wherein at least two of the diffraction means are composed from holograms formed on a first diffraction grating layer and at least a portion of the plurality of holograms formed on the first diffraction grating layer overlap at least partially with another adjacent hologram.. .
Nec Corporation

Holographic display device

Provided is a holographic display device. The holographic display device includes a light source unit configured to emit a light, and a spatial light modulator (slm) configured to modulate at least one of a phase and amplitude of the light emitted from the light source unit to output a hologram image, and including a plurality of pixel groups that are arranged in a first direction, wherein each of the plurality of pixel groups includes: first pixels arranged in a matrix x1×y1 and providing an image having a first wavelength, and second pixels adjacent to the first pixels in the first direction, arranged in a matrix x2×y2, and providing an image having a second wavelength that is different from the first wavelength..
Electronics And Telecommunications Research Institute

Three-dimensional thermal or photovoltaic solar panel with incorporated holography

The present invention relates to a solar panel with three-dimensional (3d) unitary structures or cavities that is made entirely of plastic materials and applicable to both a thermal solar panel and a photovoltaic solar module. The difference between both cases is that in the first case, the structure incorporates pipes (6) for a heat-carrying fluid, whereas in the second case it is provided with photovoltaic solar cells (8).
Instituto HologrÁfico Terrasun, S.l.

Hologram generation method and apparatus

Provided is a hologram generation method including receiving three-dimensional (3d) data information, determining a first projection position onto which the 3d data information is projected on a hologram plane corresponding to a first spatial light modulator (slm), and a second projection position onto which the 3d data information is projected on a hologram plane corresponding to a second slm, generating a first fresnel zone plate (fzp) pattern corresponding to the first projection position, and determining the first fzp pattern to be an fzp pattern corresponding to the second projection position.. .
Electronics And Telecommunications Research Institute

Method of producing collar stays from identification cards

The present invention comprises a method of using a punch for cutting one or more collar stays directly from an identification card. The punch includes a holding portion positioned on one side of the identification card and a die or blade portion aligned with the held identification card.
Pick Punch Llc

Hologram display controlling the same

Provided is a hologram display apparatus according to an exemplary embodiment of the present invention. The hologram display apparatus includes: a detector configured to detect a position of a viewer; and a spatial light modulation panel that modulates a light to display a hologram.

Data format for hologram, and holographic video system

A holographic image processing method and a holographic image display method are provided. The holographic image processing method performed by a holographic image processing apparatus may include acquiring a holographic image, encoding the holographic image by quantizing the holographic image to improve at least one of a temporal correlation, a spatial correlation, and a channel correlation of the acquired holographic image, and generating the encoded holographic image..

Projection device and projection-type video display device

An illumination device includes an optical element including a hologram recording medium capable of diffusing a coherent light beam, the hologram recording medium comprising a plurality of regions, each region diffusing a coherent light beam to an illuminated region corresponding to that region, and an irradiation device configured to irradiate the optical element with the coherent light beam so as to allow the coherent light beam to scan the hologram recording medium. The coherent light beam incident to a position existing in each region of the hologram recording medium is diffused to an entire region of the illuminated region corresponding to the region in order to illuminate the entire region of the illuminated region..

Scalable and tileable holographic displays

A holographic display system for generating a super hologram with full parallax in different fields of view in the horizontal and vertical directions. The display system includes assemblies or subsystems each adapted to combine holographic displays and coarse integral displays to produce or display a coarse integral hologram.
Disney Enterprises, Inc.

Integrated medical record system using hologram technology

In one aspect of the invention, a computer-implemented method may include maintaining in a computer system, a plurality of relationships among users in an aggregated data network. A user may receive a plurality of data points, where at least one of the data points, was requested via a relationship inquiry, made using a health insurance portability and accountability act (hipaa) compliant security clearance user interface.

Optical device for reproducing three-dimensional lighting images

An optical device includes a hologram recording member on which a hologram image is recorded, a light source for reproducing the hologram image, a first reflecting surface for projecting the hologram image ahead of the hologram recording member by reflecting a light from the light source into a rear side of the hologram recording member at a predetermined angle, and a second reflecting surface for generating a backlight by reflecting the light from the light source into the rear side of the hologram recording member.. .
Sl Corporation

Method of fabricating large area birefringent grating films

A method of fabricating large area birefringent grating films requires directing a uv beam through a large-scale lc polymer film alignment template on which a predetermined periodic alignment pattern has been imprinted and onto a photo-alignment layer such that the pattern is transferred thereon. The alignment template is fabricated by directing a collimated linearly polarized uv beam through a birefringent prism to produce two uv beams, which are directed onto a photo-alignment layer through a uniform quarter-wave plate to create a uv hologram which imprints the desired pattern onto the photo-alignment layer.
Teledyne Scienlific & Imaging. Llc

Flexible photovoltaic module

A flexible and/or bendable photovoltaic (pv) module including a plurality of pv cell based units, the immediately-adjacent of which are chained together by a flexible joint. A segment of flexible electrically-conductive member runs through the flexible joint to establish electrical communication between the pv cell based units.
Prism Solar Technologies Incorporated

System, 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. The electromagnetic radiation assembly is further configured to diffract the received electromagnetic radiation and transmit a diffracted electromagnetic radiation.
Celloptic, Inc.

Full-color incoherent digital holography

In one embodiment, a color holographic image is created by generating a separate complex hologram for each of multiple different colors of an object field illuminated with incoherent light, combining the separate complex holograms to obtain a color complex hologram, and generating a reconstructed color holographic image of the object field.. .
University Of South Florida

Comparing extracted card data using continuous 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.

Device and calculating holographic data

An apparatus and a method for optimized calculation of 2d sub-holograms for object points of a three-dimensional scene and a pipeline for real-time calculation of holograms are provided. The invention shortens the calculation time of a hologram for representing a three-dimensional scene and/or to reduce the calculation complexity of such a hologram.
Seereal Technologies S.a.

Hologram reproducing device and hologram reproducing method

A hologram reproducing device which reproduces information from a recording medium having information recorded by interfering a signal beam and a reference beam, provided with a first light-angle change unit which changes an irradiation angle of the reference beam; a second light-angle change unit which changes the irradiation angle of the reference beam; a photodetector which detects a reproduction beam; a first light-angle drive-signal output unit which outputs a drive signal of the first light-angle change unit; a first light-angle control unit which controls the first light-angle change unit on the basis of the output of the photodetector; a second light-angle drive-signal output unit which outputs a drive signal of the second light-angle change unit; a second light-angle control unit which controls the second light-angle change unit; and a light-angle interpolation processing unit which controls a control target value of the second light-angle control unit.. .
Hitachi-lg Data Storage, Inc.

Optical information recording/reproducing apparatus

A hologram apparatus and hologram optical system includes: a light source which emits a light beam; a splitter which splits the light beam emitted from the light source into a first light beam and a second light beam; a first lens for exposing an optical information recording medium to convergent light of the first light beam; an optical path angle varying device which causes the second light beam to become incident at substantially the same position as the first light beam in the optical information recording medium and changes an angle of incidence of the second light beam incident on the optical information recording medium; and an optical path shifting element which shifts a position of a light beam incident on the optical information recording medium, according to an angle to the optical information recording medium of the light beam incident on the optical information recording medium.. .
Hitachi-lg Data Storage, Inc.

Optical information recording/reproduction device and adjustment method

The optical information recording/reproduction device for recording information by irradiating an optical information recording medium with signal light and reference light to form a hologram, and reproducing the information by irradiating the hologram with the reference light, wherein the optical information recording/reproduction device is provided with a branching element for branching laser light from a laser light source into signal light and reference light, a spatial light modulation unit for adding two-dimensional information to the signal light, an objective lens for irradiating an optical information recording medium with the signal light, a photodetector for detecting diffracted light from the optical information recording medium when irradiated with the reference light, and an optical axis adjustment unit disposed between the laser light source and the branching element, the optical axis adjustment unit adjusting the optical axis of the laser light.. .

Holographic encryption of multi-dimensional images

Cryptographic techniques for encrypting images, and decrypting and reconstructing images, are provided to facilitate preventing unauthorized access to images. A holographic cryptographic component (hcc) can generate a global image comprising a scaled version of a source image and random content, generate a phase hologram representing the global image, and encrypt the phase hologram to generate an encrypted hologram based on a random phase mask, which can be the private encryption key.

Neural control holography

Neural control of holograms is provided to facilitate improving the viewing pleasure of a viewer. A holographic processor component can generate holograms representing a multi-dimensional object scene.

Optical information apparatus and information processing apparatus

An rf hologram is divided in a direction perpendicular to a tangent line of an information track of an information recording surface of an optical disc, and includes a central region including an optical axis of laser light as well as a first end portion region and a second end portion region which sandwich the central region, the central region is formed by a binary diffraction grating and generates ±1 order diffracted light, the first end portion region is formed by a blazed diffraction grating and generates first +1 order diffracted light, the second end portion region is formed by a blazed diffraction grating and generates second +1 order diffracted light, and an rf light receiving element receives both the ±1 order diffracted light, the first +1 order diffracted light, and the second +1 order diffracted light.. .

Holographic display apparatus and holographic display method

A holographic display apparatus includes a spatial light modulator configured to generate hologram patterns to modulate light; an illuminator configured to emit the light to the spatial light modulator; and a controller configured to control operations of the spatial light modulator and the illuminator, the spatial light modulator being configured to generate, from among the hologram patterns, a first hologram pattern and a second hologram pattern according to the control operations of the controller, the first hologram pattern and the second hologram pattern being configured to form a first hologram image and a second hologram image having different viewpoints, and the controller being configured to set a first phase modulation value of the first hologram pattern and a second phase modulation value of the second hologram pattern to be different from each other such that hologram images having different viewpoints are formed.. .

Security elements and their manufacture

The present invention relates to complex security elements based on liquid crystal coatings which are subsequently coated with specific metallic nano-shaped metal particles, a method for their manufacture, in particular on a glass, paper or on a plastic substrate and a security product obtainable using the security element. The security element may contain additionally an embossed surface relief microstructure, especially an optically variable image (an optically variable device, ovd), such as a hologram.

Optical information recording/reproducing apparatus, optical information recording/reproducing method and data archiving system

In a hologram recording/reproducing apparatus where a wavelength-variable laser diode having the external resonator structure is used as its light-source, stable recording/reproducing quality is ensured with respect to a change in the recording/reproducing wavelength against the expansion or contraction of a hologram medium caused by the hologram recording and the temperature change. When the output wavelength from the wavelength-variable laser diode is changed to a predetermined target wavelength, the temperature of the laser light-emission part of the wavelength-variable laser diode is controlled by a temperature control element so that the wavelength band, within which the light-emission power of the laser light-emission spectrum is higher than a predetermined light-emission power, includes the above-described predetermined target wavelength..
Hitachi-lg Data Storage, Inc.

Interferometric apparatus with computer-generated hologram for measuring non-spherical surfaces

Method and system of interferometrically measuring, in reflection, a non-spherical surface with two diffracted beams (of different diffraction orders) formed by a diffractive element positioned transversely to the axis of a common-path interferometer. The first diffracted beam substantially maintains the wavefront of a beam incident onto the diffractive element, while the second diffracted beam has a wavefront profile corresponding to the profile of the measured surface.
Dmetrix, Inc.

Method of laser illumination with reduced speckling

Proposed is a method of laser illumination with reduced speckling for in optical microscopy, machine vision systems with laser illumination, fine optical metrology, etc. The method comprises forming a net of planar ridge waveguides into an arbitrary configuration and providing them with a plurality of holograms having holographic elements formed into a predetermined organization defined by the shape of a given light spot or light field which is to be formed by light beams emitted from the holograms on the surface of the object or in a space at a distance from the planar ridge waveguide.

Compact projection light engine for a diffractive waveguide display

The technology provides a waveguide display having a compact projection light engine and a diffractive waveguide. The diffractive waveguide includes input diffraction gratings with rolled k-vectors.

Position measuring device

A position measuring device of the invention includes a light emitter configured to emit a laser light, a hologram configured to generate a reconstructed image of an inclined surface relative to an optical axis, a light receiver disposed on a reconstructed image forming surface of the hologram, and a measurement unit configured to measure a position of an object based on a position of light received by the light receiver. In the position measuring device of the invention, the light emitter may emit a linear laser light and the light receiver may include an image sensor having a two-dimensional array of pixels..
Mitutoyo Corporation

Security element comprising a volume hologram

The present invention relates to a security element (20) to be built into an item, particularly a document (10), said security element comprising a holographic layer, enabling a volume hologram to be generated, and a non-holographic variable opacity structure generated by the presence of: a) one or more cutout(s) and/or at least partially translucent areas and moreover at least partially opaque area(s); and/or b) oriented platelet pigments. The variable opacity structure is at least partially placed over the hologram within a region of the security element observable in transmitted light..
Arjowiggins Security

Hologram recording and reproducing device, and angular multiplexing recording and reproducing method

A hologram recording and reproducing device and an angular multiplexing recording and reproducing method capable of detecting an angular error signal for which, in a two-beam angle multiplexing method, high-speed reproducing can be achieved with a superior recovered signal. A branch element branches a light beam, emitted from a light source, into a signal light and a reference light.
Hitachi Consumer Electronics Co., Ltd.

Photopolymer formulations for producing holographic media having highly crosslinked matrix polymers

The invention relates to a photopolymer formulation comprising a polyol component, a polyisocyanate component, a writing monomer, and a photoinitiator, containing a coinitiator and a dye having the formula f an, where f stands for a cationic dye and an″ stands for an anion, wherein the dye having the formula f an comprises a water absorption of =5%. The invention further relates to a holographic medium, in particular in the form of a film, containing a photopolymer formulation according to the invention, to the use of such a medium for recording holograms, and to a special dye that can be used in the photopolymer formulation according to the invention..
Bayer Intellectual Property Gmbh

Live teleporting system and apparatus

A telepresence system includes a projector for generating an image, a projection screen for reviewing the image generated by the projector and generating a reflected image and a foil for reviewing the reflected image generated by the projection screen. The foil generates and directs partially reflected image toward an audience, the partially reflected image being perceived by the audience as a virtual image or hologram located on a viewing stage.
Musion Ip Ltd.

Optical information recording and reconstructing device

During reconstruction, the hologram cannot be reconstructed at high speed. In the present invention, the distance between the optical system base point, which is associated with a recording medium address during recording, and the recording medium is measured, and said distance is recorded in a memory.
Hitachi Consumer Electronics Co., Ltd.

Apparatus for reducing data volumes

Apparatus for reducing data volumes, which apparatus comprises: (1) a source systems data profiler and extractor subsystem comprising: a. A fuzzy logic controller comprising fuzzyfier, inference, and output handling, b.
Penteract28 Limited

Hologram recording and playback device and hologram playback method

A hologram recording and playback device is provided with: a medium rotation unit which rotates a hologram recording medium around a predetermined rotational axis; a movement unit which is capable of moving the position of the medium rotation unit within a plane that is perpendicular to the rotational axis; an orthogonal incident angle modification unit which is capable of modifying an orthogonal incident angle; a medium rotation control unit which controls the medium rotation unit so as to rotate the hologram recording medium; an eccentricity compensation unit which performs positioning control of the movement unit; an orthogonal incident angle control unit which controls the orthogonal incident angle modification unit; and an orthogonal incident angle calculation unit which calculates the orthogonal incident angle.. .
Hitachi Consumer Electronics Co., Ltd.

Method and generating hologram

A method of generating a hologram includes receiving three-dimensional (3d) image data, dividing 3d image data into data groups which are independent from one another, by a first processor; calculating, from at least one of the data groups, hologram values to be displayed at respective positions on a hologram plane, by the first processor; calculating, from at least another one of the data groups, hologram values to be displayed at the respective positions on the hologram plane by a second processor, and summing the calculated hologram values for each of the respective positions on the hologram plane, by the first processor or the second processor, or by the first processor and the second processor in parallel.. .
Samsung Electronics Co., Ltd.

System and applying orthogonal limitations to light beams using microelectromechanical systems

A system for generating a light beam having a plurality of orthogonal function modes includes a light source for generating a plane wave light beam. A microelectromechanical (mem) system including an array of micro-mirrors for generating the light beam having the plurality of orthogonal function modes applied thereto responsive to the plane wave light beam and control signals for controlling the array of micro-mirrors.
Nxgen Partners Ip, Llc

Video display device and head-mounted display

A video display device is provided with: a display element which modulates light from an illumination optical system, and displays video; and an ocular optical system for guiding video light from the display element into a pupil of an observer. The ocular optical system is provided with: an ocular prism which guides the video light therein; and a holographic optical element (hoe).
Konica Minolta, Inc.

Light extracting diffusive hologram for display illumination

This disclosure provides systems, methods and apparatus for illumination, such as for illuminating displays, including reflective displays. An illumination device may include a light-extracting, diffusive holographic medium.
Qualcomm Mems Technologies, Inc.

Apparatus and measuring quality of holographic image

An apparatus and a method for measuring quality of a holographic image are disclosed. The apparatus for measuring the quality of the holographic image may include an obtaining unit to obtain a hologram, a reconstruction unit to reconstruct a three-dimensional (3d) holographic image by irradiating the hologram with a light source, a measuring unit to measure depth of the reconstructed holographic image, and an analysis unit to analyze depth representation quality of the holographic image base on the measured depth of the holographic image..
Electronics And Telecommunications Research Institute

Lamp for vehicle

A lamp for a vehicle may include a hologram reproducing apparatus reproducing a written image to an outside when light is input, a light source provided to one end side of the hologram reproducing apparatus, and a reflecting apparatus provided to another end side of the hologram reproducing apparatus and reflecting light of the light source to the hologram reproducing apparatus at a same incident angle as an incident angle when an image is written on the hologram reproducing apparatus.. .
Sl Corporation

Holography reproducing apparatus and holography reproducing method

A holography reproducing apparatus and a holography reproducing method are provided. The holography reproducing apparatus includes: a backlight configured to emit light, and a spatial light modulator configured to modulate light input from the backlight and transmit the modulated light to generate a transmissive hologram image, wherein at least one of a wave front of light emitted from the backlight and the spatial light modulator has a curved surface..
Samsung Electronics Co., Ltd.

Hologram generation apparatus and method

Provided is a hologram generation apparatus based on a hologram imaging system, which includes an object space, where an object is situated, and a retina space or region, where an image is formed within an eyeball of an observer. The hologram generation apparatus comprises: a modeling unit for generating first graphic data by transforming a 3d image of a 3d object to a set of polygonal facets; a data transformation unit for generating second graphic data by transforming the first graphic data from the modeling unit to normal/reference coordinates in the retina region; a hologram generation unit for generating a first computer generated hologram (cgh1), which is light wave analysis data for the second graphic data; and a hologram transformation unit for transforming the first computer generated hologram (cgh1) in the retina region to a second computer generated hologram (cgh2) in the object space..
Korea University Research And Business Foundation

Concentrating photovoltaic skylight based on holograms and/or methods of making the same

Improved building-integrated photovoltaic (bipv) systems according to certain example embodiments may include concentrated photovoltaic skylights or other windows in which holographic optical elements (hoes) are provided. The hoes are formed on or in a substantially planar glass substrate, e.g., at light coupling locations, and they help form a holographic projection of light in a desired wavelength range on a photovoltaic module.
Guardian Industries Corp.

Three-dimensional mixed-reality viewport

An application running on a computing platform that employs three-dimensional (3d) modeling is extended using a virtual viewport into which 3d holograms are rendered by a mixed-reality head mounted display (hmd) device. The hmd device user can position the viewport to be rendered next to a real world 2d monitor and use it as a natural extension of the 3d modeling application.

Fluorescence receiving apparatus and fluorescence receiving method

A fluorescence receiving apparatus comprises an excitation light source, a spatial light modulator of a phase modulation type for phase-modulating excitation light to obtain phase-modulated light, a focusing optical system configured to focus the phase-modulated light to a specimen, a specimen stage for supporting the specimen, a fluorescence receiver for receiving fluorescence generated by focus of the phase-modulated light to the specimen, a control unit for displaying a first cgh on the spatial light modulator, and a correction unit for correcting the first cgh. The correction unit comprises a receiver-specific sensitivity information storage preliminarily acquiring and storing sensitivity information per reception position specific to the fluorescence receiver, and a second hologram generator for correcting the first cgh, based on intensities of the fluorescence and the sensitivity information, to generate a second cgh.
Hamamatsu Photonics K.k.



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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