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Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

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Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

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Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
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Применить Всего найдено 11602. Отображено 100.
02-02-2012 дата публикации

Holographic microscope

Номер: US20120026313A1
Принадлежит: ROCKEFELLER UNIVERSITY

A holography attachment device for a digital imaging device. The holography attachment device including a chamber having a proximate end configured to attach to the digital imaging device. A distal end of the chamber includes a wall. Also, the chamber includes a sample holder section located between the proximate end and the distal end. The sample holder section is configured to receive a sample. The chamber is configured to attach to the digital imaging device.

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16-02-2012 дата публикации

Method and apparatus for optically reading information

Номер: US20120037698A9
Принадлежит: BAYER INNOVATION GMBH

The present invention relates to a novel type of information carrier, on which information is stored in the form of diffraction structures. The information carrier according to the invention can be read by being drawn manually through a reading device. The present invention also relates to a device with which an information carrier according to the invention can be read.

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12-04-2012 дата публикации

Apparatus and method for holography 3-dimensional display

Номер: US20120086994A1
Принадлежит: SAMSUNG ELECTRONICS CO LTD

An apparatus includes a recording light source configured to emit recording beams, an electrically addressable spatial light modulator (EASLM) configured to time sequentially modulate the recording beams emitted from the recording light source according to hologram information corresponding to a 3-dimensional image spatially divided into a plurality of portions, an optically addressable spatial light modulator (OASLM) configured to include a plurality of regions corresponding to the plurality of the divided portions of the 3-dimensional image and images on a region corresponding to the portions using the modulated recording beams to form a hologram, a scanning optical unit configured to reproduce the hologram formed by the recording beams serially modulated by the EASLM on a reduced scale and transmit the hologram to the regions of the OASLM corresponding to the portions, and a reproducing light source configured to produce a surface light and emit the surface light to the OASLM.

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03-05-2012 дата публикации

Holographic Apparatus and Method

Номер: US20120105580A1

The invention relates to a method of and apparatus for displaying a holographically generated video image having plural video frames. For each period there is provided a respective sequential plurality of holograms. The holograms of the plural video frames are displayed for viewing the replay field thereof, and the noise variance of each frame is perceived as attenuated by averaging across said plurality of holograms.

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17-05-2012 дата публикации

Device and method of marking a set of products

Номер: US20120120465A1

The invention relates to a method of marking a batch of products, consisting in forming a synthetic hologram of an image ( 20 ) on each product, said hologram being furthermore encoded using a phase key, the image comprising a first portion ( 22 ) common to the various products of the batch and a second portion ( 24 ) that differs from one product to another.

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12-07-2012 дата публикации

Optical reader module and optical reader

Номер: US20120176655A1
Автор: Akira Shirakura
Принадлежит: Sony Corp, Sony DADC Corp

An optical reader module includes a first illumination light source that emits reproducing illumination light to an image-capture target containing a hologram in which information reproduced in a predetermined angle area when illuminated from a predetermined angle is recorded, thereby reproducing the information recorded in the hologram; an image-capturing device that captures an image of the information reproduced from the hologram; and a first light-projecting unit that projects first-optical-guide-forming light on the image-capture target. A first optical guide projected on the image-capture target takes a predetermined shape when the emission angle of the reproducing illumination light to the hologram is equal to the predetermined angle. An observer of the image-capture target recognizes misalignment between the emission angle of the reproducing illumination light to the hologram and the predetermined angle, based on distortion of the first optical guide projected on the image-capture target from the predetermined shape.

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19-07-2012 дата публикации

Multiple laminar flow-based particle and cellular separation with laser steering

Номер: US20120183947A1
Принадлежит: Arryx Inc

The invention provides a method, apparatus and system for separating cellular components, and can be combined with holographic optical trapping manipulation or other forms of optical tweezing. One exemplary method includes providing a first flow having a plurality of components; providing a second flow; contacting the first flow with the second flow to provide a first separation region; and differentially sedimenting a first cellular component of the plurality of components into the second flow while concurrently maintaining a second cellular component of the plurality of components in the first flow. The second flow having the first cellular component is then differentially removed from the first flow having the second cellular component. Holographic optical traps may also be utilized in conjunction with the various flows to move selected components from one flow to another, as part of or in addition to a separation stage.

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30-08-2012 дата публикации

Method and apparatus for compensating for a parameter change in a synthetic aperture imaging system

Номер: US20120218140A1
Принадлежит: Institut National dOptique

There is described a method for processing data generated by a synthetic aperture imaging system, comprising: receiving raw data representative of electromagnetic signals reflected by a target area to be imaged; receiving a parameter change for the synthetic aperture imaging system; digitally correcting the raw data in accordance with the parameter change, thereby compensating for the parameter change in order to obtain corrected data; and generating an image of the target area using the corrected data.

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06-09-2012 дата публикации

Optical element, light source device, and projection-type display device

Номер: US20120224149A1
Принадлежит: NEC Corp

A hologram layer ( 13 ) is irradiated by light from an optical element ( 10 ). The hologram layer ( 13 ) is provided with a first hologram ( 14 ) that diffracts in a predetermined direction, from among incident light from the optical element ( 10 ), X-polarized light in which the polarization component is in a specific direction and emits the light as X-polarized light of a first phase state (P 1 ), and a second hologram ( 15 ) that both diffracts in the same direction as the X-polarized light of the first phase state (P 1 ) and moreover at an equal radiation angle, from among incident light from the optical element ( 10 ), Y-polarized light in which the polarization component is in a direction orthogonal to that of the X-polarized light and converts it to X-polarized light, and emits the light as X-polarized light of a second phase state (P 2 ) that differs from the first phase state (P 1 ).

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13-09-2012 дата публикации

Photopolymer formulation having different writing comonomers

Номер: US20120231377A1
Принадлежит: Individual

The invention relates to a photopolymer formulation comprising matrix polymers, writing monomers, and photo initiators, comprising a combination of at least two different writing monomers. The invention further relates to the use of the photopolymer formulation for producing optical elements, in particular for producing holographic elements and images, to a method for producing the photopolymer formulation and to a method for illuminating holographic media made of the photopolymer formulation.

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20-09-2012 дата публикации

Selection method for additives in photopolymers

Номер: US20120237856A1
Принадлежит: Bayer Intellectual Property GmbH

The invention relates to a method for selecting compounds which can be used as additives in photopolymer formulations for producing light holographic media, and to photopolymer formulations which contain at least one softener which are selected according to the claimed method. The invention also relates to the use of photopolymer formulations for producing holographic media.

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08-11-2012 дата публикации

Optical solenoid beams

Номер: US20120281263A1
Принадлежит: New York University NYU

Optical solenoid beams, diffractionless solutions of the Helmholtz equation whose diffraction-limited in-plane intensity peak spirals around the optical axis, and whose wavefronts carry an independent helical pitch. The solenoid beams have the noteworthy property of being able to exert forces on illuminated objects that are directed opposite to the direction of the light's propagation. Optical solenoid beams therefore act as true tractor beams that are capable of transporting material back toward their source.

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15-11-2012 дата публикации

Displaying 3D Imaging Sensor Data on a Hogel Light Modulator

Номер: US20120287490A1
Принадлежит: Zebra Imaging Inc

Methods and systems for displaying 3D imaging data, including providing 3D imaging sensor data, processing the 3D imaging sensor data, the processing being configured to modify the 3D imaging sensor data into a modified format suitable for a hogel light modulator, and providing the modified 3D imaging data to the hogel light modulator.

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15-11-2012 дата публикации

Holographic sensor

Номер: US20120288785A1
Принадлежит: Dublin Institute of Technology

A sensor device comprising a holographic element comprises a grating or hologram recorded in a holographic recording medium wherein at least one physical and/or chemical and/or optical characteristic of the holographic element or the image produced by it varies as a result of variation in relative humidity or moisture content in the air surrounding the element. Also provided is an acrylamide-based photopolymer and an acrylamide-based reflection hologram.

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29-11-2012 дата публикации

Floating virtual hologram display apparatus

Номер: US20120300274A1
Автор: Chih-Hsiung Lin
Принадлежит: Era Optoelectronics Inc

A floating virtual hologram display apparatus, includes a scanning mechanism, a diffractive optical element and a reconstruction light source thereof. After a light beam emitted from the reconstruction light source passes through the diffractive optical element (DOE), and is diffracted by the DOE, a hologram beam spot will be displayed in front of the diffractive optical element; a floating virtual hologram is displayed after a position of the hologram beam spot is scanned and altered by the scanning mechanism; the floating virtual hologram being allowed to display a variable virtual image by controlling the reconstruction light source to emit bright, dark and different color of light corresponding to an image through the image signal processing unit.

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29-11-2012 дата публикации

Apparatus and method for irradiating a medium

Номер: US20120300608A1
Автор: Takahiro Masumura
Принадлежит: Canon Inc

A method for irradiating a medium with a wave which is designed to focus on a particular portion in the medium, the method includes: irradiating the medium with an electromagnetic wave which is scattered in the medium, and is not designed to focus on the particular portion in the medium; detecting a first signal caused by irradiating the medium with the electromagnetic waver; irradiating the medium with a reconstructed wave which is designed to focus on the particular portion in the medium; detecting a second signal caused by irradiating the medium with the reconstructed wave; and monitoring, based on the first and second signals, that the particular portion is irradiated by the reconstructed wave.

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03-01-2013 дата публикации

Holographic storage method and article

Номер: US20130003151A1
Принадлежит: SABIC INNOVATIVE PLASTICS IP BV

A method of recording a holographic record is described. According to this method, a holographic recording medium is exposed to a desired pattern, shape, or image from a coherent light source emitting light at one or more wavelengths to which the holographic recording medium is sensitive. In this method, light having the desired pattern, shape, or image to which the holographic recording medium is exposed is diffracted by a spatially homogeneous optical diffraction element so that the holographic recording medium is exposed to a plurality of interfering light beams, thereby forming a holographic record in the holographic recording medium. Holographic recording articles are described that include a holographic recording medium and a spatially homogeneous optical diffraction element.

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21-02-2013 дата публикации

Three Dimensional Display Compute System

Номер: US20130044105A1
Принадлежит: Individual

System and method for video holographic display. Information is received regarding a 2D hogel array with multiple hogel apertures, specifying number, size, and/or spacing of the hogel apertures. Information regarding a 3D scene is received, including a scaling factor mapping the 3D scene to a 3D display volume. Due to gradual variation of radiation patterns from hogel to hogel, a full set of color radiation intensity patterns for the entire hogel array may be generated by interpolating the color radiation intensity patterns from a sparse subset of the hogels without having to compute all of the patterns. The full set of color radiation intensity patterns may then be used to holographically display the 3D scene.

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14-03-2013 дата публикации

Color holographic optical element

Номер: US20130065159A1
Принадлежит: Intrepid World Communication Corp

A process for producing a color holographic optical element in a real-time interactive multi-channel auto-stereoscopic color image display system, including producing light comprising at least three different monochromatic parts of the optical spectrum from one or more lasers and illuminating a holographic plate with the light from different directions and recorded on a panchromatic light sensitive recording material coated on a suitable substrate.

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21-03-2013 дата публикации

Laser machining device and laser machining method

Номер: US20130068742A1
Принадлежит: Hamamatsu Photonics KK

A laser machining device 1 comprises a laser light source 10 , a spatial light modulator 20 , a controller 22 , a converging optical system 30 , and a shielding member 40 . The phase-modulating spatial light modulator 20 inputs a laser beam outputted from the laser light source 10 , displays a hologram modulating a phase of the laser beam at each of a plurality of pixels arranged two-dimensionally, and outputs the phase-modulated laser beam. The controller 22 causes the spatial light modulator 20 to display a plurality of holograms sequentially, lets the converging optical system 30 converge the laser beam outputted from the spatial light modulator 20 at converging positions having a fixed number of M, selectively places N converging positions out of the M converging positions into a machining region 91 , and machines an object to be machined 90.

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11-04-2013 дата публикации

Digital Holographic Method of Measuring Cellular Activity and Measuring Apparatus with Improved Stabililty

Номер: US20130088568A1
Автор: David D. Nolte
Принадлежит: PURDUE RESEARCH FOUNDATION

Motility contrast imaging (MCI) is a depth-resolved holographic technique to extract cellular and subcellular motion inside tissue. The holographic basis of the measurement technique makes it highly susceptible to mechanical motion. The motility contrast application, in particular, preferably includes increased mechanical stability because the signal is based on time-varying changes caused by cellular motion, which should not be confused with mechanical motion of the system. Apparatus for motility contrast imaging that provides increased mechanical stability is disclosed. It is based on common-path configurations, in which the signal and reference beams share optical elements in their paths to the detector. The two beams share mechanical motions in common, and hence these motions do not contribute to the signal.

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18-04-2013 дата публикации

Digital Holographic Method of Measuring Cellular Activity and of Using Results to Screen Compounds

Номер: US20130096017A1
Автор: David D. Nolte, Kwan Jeong
Принадлежит: PURDUE RESEARCH FOUNDATION

Motility contrast imaging (MCI) is a depth-resolved holographic technique to extract cellular and subcellular motion inside tissue. The holographic basis of the measurement technique makes it highly susceptible to mechanical motion. The motility contrast application, in particular, preferably includes increased mechanical stability because the signal is based on time-varying changes caused by cellular motion, not to be confused with mechanical motion of the system. The use of the resulting spectrogram response signatures, or “fingerprint” data, of known compounds is disclosed to screen new compounds for leads as to those having potentially beneficial mechanisms of action. The “fingerprint” data of known toxic compounds can be used to screen new compounds for toxicity.

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25-04-2013 дата публикации

3-dimensional holographic image displaying apparatus

Номер: US20130100513A1
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A 3-dimensional (3D) holographic image displaying apparatus is provided. The apparatus includes a hologram reproducer configured to generate surface plasmons in response to incident light and reproduce a 3D image by diffracting the generated surface plasmons by a hologram, and a surface light source unit including a light source and a light guide plate, the light guide plate being configured to allow incident light from the light source to enter into the light guide plate, internally reflect the allowed light, and output the internally reflected light through a light-output surface, the surface light source unit being configured to implement colors by adjusting an angle of the light incident to the hologram reproducer so that the outputted light through the light-output surface is incident to the hologram reproducer at a surface plasmon-forming angle for each wavelength to generate the surface plasmons corresponding to a plurality of color beams.

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25-04-2013 дата публикации

Compact wearable display

Номер: US20130101253A1
Принадлежит: Individual

There is provided a wearable display comprising a light source emitting light of a first wavelength; a first SBG device having a front side and a rear side; first and second transparent plates sandwiching said SBG device; independently switchable transparent electrode elements applied to the opposing surfaces of said transparent plates, a means for spatio-temporally modulating light from the light source to provide image light and a means for coupling the image light into the light guide formed by the two transparent plates and the SBG device. The SBG device comprises a multiplicity of selectively switchable grating regions. The SBG device diffracts image into the pupil of an eye.

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13-06-2013 дата публикации

Holographic display

Номер: US20130148179A1
Принадлежит: Broadcom Corp

Disclosed are various embodiments of a holographic display device that may reproduce dynamic color holograms and holographic video. A holographic display device includes a processor, a memory, a display screen, and one or more monochromatic light sources. The memory stores a holographic interference pattern that encodes a three-dimensional scene. The display screen is configured by the processor to render the holographic interference pattern. The monochromatic light sources are configured to illuminate the display screen so as to reconstruct a wavefront reflected by the three-dimensional scene.

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13-06-2013 дата публикации

Speckle noise reduction based on longitudinal shift of sample

Номер: US20130148182A1
Принадлежит: Canon Inc

A method and apparatus for reducing speckle noise in an image of an object are disclosed. The method includes, placing the object in an interferometer at a first position along a beam path of an object beam, irradiating the object with the object beam, moving the object from the first position to a second position by longitudinally shifting the object along the beam path of the object beam, irradiating the object with the object beam at the second position. At each of the first and second positions a holographic image formed by interference between the object beam and a reference beam is recorded. An object image with reduced speckle noise is obtained by averaging the holographic images. Either an arithmetic mean or a weighted average may be used in the averaging of the holographic images.

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11-07-2013 дата публикации

Wavefront compensation in optical synthetic aperture imaging processors

Номер: US20130176167A1
Принадлежит: Institut National dOptique

There is provided a System and method of wavefront compensation in a synthetic aperture imaging system. A return signal data representative of a signal reflected by a target area to be imaged is received. A compensation phase figure corresponding to a wavefront compensation to be applied is provided. The compensation phase figure is added or otherwise applied to the phase pattern of the return signal data in order to obtain a compensated phase pattern. An optical beam is spatially modulated according to the compensated phase pattern to produce a modulated optical beam such that the compensation phase figure produces a wavefront compensation on the optical beam. An image of the target area is optically generated using the modulated optical beam.

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01-08-2013 дата публикации

Advanced Methods of and Apparatus for the Manipulation of Electromagnetic Phenomenon: the Decoding of Genetic Material and the Human Genome (E3)

Номер: US20130194645A1
Автор: Carl Raymond Amos
Принадлежит: Individual

An advanced method of and apparatus for manipulating electromagnetic spectra, which incorporates a bent tepee or bent pyramidal aligned array of conical or pyramidal inverted sections that have at least two intrinsic angles of differing values aligned co-axially. These are arranged to naturally produce a reference and object waves that impinges on and illuminate a holographic plate or recording means to produce on-axis or in-line transmission and reflection holograms, including real time display. The technology is also applicable to the detection, identification, and/or decoding of genetic material, specifically DNA and the Human Genome.

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01-08-2013 дата публикации

Full Color Phase-Only Spatial Light Modulator for Holographic Video Display System

Номер: US20130194651A1
Принадлежит: Light Field Corp

Full-color phase-only spatial light modulators (SLM) are proposed for modulating phase of the light. Proposed SLMs are low-power electrically actuated surface micromachined MEMS device with high reflectivity, high switching speed, high diffraction efficiency, high fill-factor and low surface adhesion to the substrate.

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01-08-2013 дата публикации

Image processing apparatus and method

Номер: US20130195348A1
Принадлежит: SAMSUNG ELECTRONICS CO LTD

An image processing apparatus is provided. The image processing apparatus may include a determining unit configured to determine at least one pixel having a pixel value difference between a first image and a second image lower than a critical value, among a plurality of input frame images to compute a hologram pattern, and a computing unit configured to compute a hologram pattern of the first image and to compute a hologram pattern of the second image using a computation result for the at least one pixel of the first image.

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08-08-2013 дата публикации

Hologram

Номер: US20130201446A1

A substrate includes a diffracting structure providing a hologram which encodes one or more holographic images. Every image of the one or more holographic images has a holographic location at either a finite or substantially infinite effective optical distance. The hologram is to be used as an ophthalmic eye chart or an eye exercise device or to provide a scale for measuring distances.

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15-08-2013 дата публикации

Method for processing interaction between user and hologram using volumetric data type object wave field

Номер: US20130208010A1
Автор: Seung Taik Oh, Wook Ho SON

Disclosed is a method for processing interaction between a user and hologram using a volumetric data type object wave field. A method for processing interaction between a user and hologram for user's action using a volumetric data type object wave field includes: capturing user action on the holographic image of the object and solving collision between user and object; computing the updated position and rotation of the object by time integration of rigid body equation in collision; calculating the relative position and rotation of the hologram plane with respect to local object coordinates; transforming the hologram in the pre-computed volumetric object wave field grid according to the relative position and rotation of the hologram plane in local object coordinates and reading the object wave fields at all the pixels of the transformed hologram plane in order to generate a new hologram for the transformed object caused by user action.

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26-09-2013 дата публикации

Analytic method for computing video holograms in real time

Номер: US20130250049A1
Автор: Alexander Schwerdtner
Принадлежит: SeeReal Technologies SA

An analytical method for computing a video hologram for a holographic reproduction device having at least one light modulation means is disclosed, wherein a scene split into object points is encoded as a whole hologram and can be seen as a reconstruction from a visibility region, located within a periodicity interval of the reconstruction. The visibility region, together with each object point of the scene to be reconstructed, defines a subhologram and the whole hologram is generated from a superposition of subholograms, wherein the complex hologram values of a subhologram are determined from the wave front of the respective object point to be reconstructed in a modulator region of the light modulation means, by calculating and evaluating the transmission or modulation functions of an imaging element formed in the modulator region. The object point to be reconstructed is located in the focal point of the imaging element.

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17-10-2013 дата публикации

High-speed wavefront optimization

Номер: US20130271592A1
Принадлежит: University of Colorado

A wavefront is optimized imaging a sample. A binary off-axis hologram is encoded by selective adoption of states for each mirror of a deformable mirror device, which is illuminated with an incident beam of light. A single diffraction order that has encoded phase-mask information is selected from light reflected from the deformable mirror device and focused onto the sample. Light scattered from the sample is directed to a photodetector. A transmission matrix through the sample is calculated from light received by the photodetector.

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17-10-2013 дата публикации

Holographic image forming system

Номер: US20130271803A1
Автор: ming tang Yao
Принадлежит: E LON OPTRONICS CO Ltd

A holographic image forming system is provided. The holographic image forming system includes an illumination unit, a beam splitting unit, a reference beam processing unit, an image generating unit, an object beam processing unit, and a film. The reference beam processing unit is used to generate a reference light wave carrying an image information of a target object. The reference light wave is incident to the film. Consequently, the times of multiple exposures of the film are reduced, and the brightness of the reconstructed image is enhanced.

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07-11-2013 дата публикации

Miniature microscope and manufacturing method of optical element thereof

Номер: US20130293697A1
Принадлежит: National Chiao Tung University NCTU

A manufacturing method of an optical element applied to a miniature microscope comprises the steps of: emitting a signal light and a reference light to an optical material; and forming a plurality of gratings on the optical material by interfering the signal light and the reference light. A miniature microscope is also disclosed.

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14-11-2013 дата публикации

Method for forming a structural body and an apparatus for forming a structural body

Номер: US20130300008A1
Принадлежит: TOYO SEIKAN KAISHA LTD

A method for forming a structural body includes irradiating a substrate with light having a periodic intensity distribution and a wavelength within a wavelength region which allows the substrate to show opacity thereby forming a periodic structure causing optical diffraction on a surface of the substrate.

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05-12-2013 дата публикации

Method for concealing a synthetic hologram in a binary image

Номер: US20130322680A1
Автор: Christophe Martinez

The invention relates to a synthetic hologram ( 64 A) comprising first elementary cells wherein first openings are respectively defined, said hologram being integrated into a first portion of a binary motif ( 60 ), said binary motif comprising at least one second portion wherein second elementary cells comprising second openings ( 66 ) are defined, said second openings having an average size equal to the average size of the first openings, with a 5% margin, and a random phase shift.

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12-12-2013 дата публикации

System with diffused illumination for tomographic imaging

Номер: US20130329226A1

The present invention provides an apparatus for tomographic imaging of an object. The apparatus includes a light unit configured to generate illumination, which comprises coherent light and has random phase distribution in a plane perpendicular to an optical axis, for illuminating an object, a coupler which combines a reference beam and an object beam for an interference, a shifter configured to shift relative phase difference between the object light and the reference coherent light, a detector configured to detect an interference caused by the reference coherent light and object light for the each phase, and a processor configured to calculate an optical propagation based on the detected interference for the each phase.

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19-12-2013 дата публикации

System, apparatus and method for extracting three-dimensional information of an object from received electromagnetic radiation

Номер: US20130335796A1
Автор: Gary Brooker, Joseph Rosen
Принадлежит: Individual

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. An image capture assembly is configured to capture an image of the diffracted electromagnetic radiation and produce the hologram of the object from the captured image.

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26-12-2013 дата публикации

Photorefractive composition comprising electrolytes in a photorefractive layer and method of making thereof

Номер: US20130341573A1
Принадлежит: Nitto Denko Corp

A photorefractive composition and a photorefractive device comprising the composition are disclosed. The composition is configured to be photorefractive upon irradiation by a laser having a wavelength in the visible light spectrum and comprises a polymer, a non linear optical chromophore, a plasticizer, and an electrolyte. In an embodiment, the percentage of polymer recurring units that comprise a charge transport moiety is less than 30%. In an embodiment, the electrolyte comprises one or more of ammonium salts, heterocyclic ammonium salts, and phosphonium salts. In an embodiment, the polymer is selected from the group consisting of polycarbonate, polyurea, polyurethane, poly(meth)acrylate, polyester, polyimide, and combinations thereof. Preferably, the composition has a diffraction efficiency of about 25% or greater upon irradiation with a visible light laser.

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26-12-2013 дата публикации

Method and device for focussing a microscope automatically

Номер: US20130342673A1
Принадлежит: CARL ZEISS AG, CARL ZEISS MICROSCOPY GMBH

A method for automatic focusing of a microscope with a microscope objective on a selected area of a specimen, in which a digital hologram of the selected area of the specimen is generated in an off-axis mode and a microscope with which the method is implemented. The digital hologram is used to determine, on the optical axis of the microscope objective, a focus position to be set in which the selected area of the specimen is optimally in focus. Subsequently, a control system is used to set the microscope to the focus position determined and thus is focused on the area selected.

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26-12-2013 дата публикации

Light modulator having a switchable volume grating

Номер: US20130342887A1
Принадлежит: SeeReal Technologies SA

Spatial light modulator configured as a periodic structure of polymer grating layers arranged essentially at equal distances and intermediate spaces to form a periodic grating structure. The surfaces bounding the periodic grating structure have electrodes influencing the refractive index of the active optical medium by an electric field. The electrodes have a pixelated arrangement and can be driven independently of each other with an electrical voltage. The orientation layer thickness and grating period of the periodic grating structure are configured so that they do not correspond to the Bragg condition for the light from at least one light source, and so that for light from the at least one light source incident on the spatial light modulator the light fraction deviated owing to Bragg diffraction is less than the undeviated transmitted light fraction.

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02-01-2014 дата публикации

Input device with three-dimensional image display

Номер: US20140002366A1
Принадлежит: Danmarks Tekniskie Universitet

The present invention relates to an input device ( 2 ), such as a keyboard, comprising a plurality of activation parts ( 4 ) for depression, at least one registration part ( 6 ) for individual registration of depression of activation parts, and at least one image displaying part ( 8 ), where depression of the activation parts ( 4 ) provides tactile feedback to a user. The at least one image displaying part ( 8 ) is configured for displaying a label of an activation part ( 4 ) as a three-dimensional label.

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09-01-2014 дата публикации

Method for single-write holographic imaging

Номер: US20140009806A1
Автор: John Hazen, Larry Hoague
Принадлежит: Hazen Paper Co

A method for single-write holographic imaging involves determining a layout of a plurality of holographic images on a substrate, the plurality of holographic images including at least a first holographic image having a first parameter set and a second holographic image having a second parameter set, inputting the parameter sets into a database and controlling an imaging apparatus to image the first and second holographic images on the substrate in a single session to create an integrated holographic pattern.

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23-01-2014 дата публикации

Freeform holographic imaging apparatus and method

Номер: US20140022617A1
Автор: John Hazen, Larry Hoague
Принадлежит: Hazen Paper Co

A freeform holographic imaging apparatus includes an imaging table for supporting a substrate, an imaging beam positioned adjacent to the imaging table; and a controller operatively connected to the imaging beam and configured to control a position of the imaging beam with respect to the imaging table. The controller is configured to control the imaging beam to image first and second holographic optical elements on the substrate, wherein each of the first and second holographic optical elements are a single pixel. The first holographic optical element is imaged according to a first parameter set and the second holographic optical element is imaged according to a second parameter set.

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06-02-2014 дата публикации

Spatial light modulation device and spatial light modulation method

Номер: US20140036180A1
Принадлежит: Hamamatsu Photonics KK

A spatial light modulation device includes a phase-modulation type spatial light modulator, a temperature sensor detecting a temperature of the spatial light modulator, and a control unit providing a drive signal to the spatial light modulator. The control unit has a storage unit. The storage unit stores N correction patterns created so as to correspond to N (N is an integer not less than 2) temperature values of the spatial light modulator in order to correct phase distortion of the spatial light modulator. The control unit selects one correction pattern according to a temperature value of the spatial light modulator, and generates the drive signal based on a phase pattern created by adding the one correction pattern to a desired phase pattern. Thereby, it becomes possible to suppress phase distortion according to a temperature change while suppressing a delay in operation.

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13-03-2014 дата публикации

Augmented reality information detail

Номер: US20140071163A1
Принадлежит: Individual

A holographic object presentation system and related methods for presenting a holographic object having a selective information detail level are provided. In one example, a holographic object presentation program may receive user behavior information and physical environment information. Using one or more of the user behavior information and the physical environment information, the program may adjust the selective information detail level of the holographic object to an adjusted information detail level. The program may then provide the holographic object at the adjusted information detail level to an augmented reality display program for display on a display device.

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13-03-2014 дата публикации

Apparatus and method for adjusting holographic image

Номер: US20140071506A1
Принадлежит: SAMSUNG ELECTRONICS CO LTD

A holographic object processing apparatus and method are provided. The holographic object processing apparatus may include a display device to output a holographic object, a database (DB) to store change information of the holographic object according to a distance between a control object and the holographic object, a distance measurement sensor to measure the distance between the control object and the holographic object, and a processing unit to extract change information corresponding to the measured distance from the DB and change the holographic object based on the extracted change information. The display device may output the changed holographic object.

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20-03-2014 дата публикации

Holographic polymer dispersed liquid crystals

Номер: US20140080040A1
Принадлежит: DREXEL UNIVERSITY

A hyperspectral holographic polymer dispersed liquid crystal (HPDLC) medium comprising broadband reflective properties may comprise dopants that result in a hyperspectral HPDLC with fast transitional switching speeds. Dopants may include alliform carbon particles, carbon nanoparticles, piezoelectric nanoparticles, multiwalled carbon nanotubes, a high dielectric anisotropy compound, semiconductor nanoparticles, electrically conductive nanoparticles, metallic nanoparticles, or the like. A technique for fabrication of hyperspectral broadband HPDLC mediums may involve dynamic variation of the holography setup during HPDLC formation and spatial multiplexing that may enable broadening of the HPDLC medium's wavelength response. Fabrication may include concurrently running multiple exposures and exploiting superpositioning of the resultant gratings. The hyperspectral HPDLC may be capable of blocking and/or filtering wavelengths in the range of approximately 390 nm to approximately 12 μm.

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03-04-2014 дата публикации

Fabrication of high efficiency, high quality, large area diffractive waveplates and arrays

Номер: US20140092373A1
Принадлежит: US Department of Army

An apparatus and method is presented for fabricating high quality one- or two dimensional diffractive waveplates and their arrays that exhibit high diffraction efficiency over large area and being capable of inexpensive large volume production. Employed is a generally non-holographic and aperiodic polarization converter for converting the polarization of a coherent input light beam that may be of a visible wavelength into a pattern of continuous spatial modulation at the output of said polarization converter. A photoresponsive material characterized by an anisotropy axis that may be formed or aligned according to polarization of said light beam is exposed to said polarization modulation pattern and may be coated subsequently with an anisotropic material overlayer.

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07-01-2016 дата публикации

SYSTEMS AND METHODS FOR SUB-APERTURE BASED ABERRATION MEASUREMENT AND CORRECTION IN INTERFEROMETRIC IMAGING

Номер: US20160000319A1
Принадлежит:

Systems and methods for sub-aperture correlation based wavefront measurement in a thick sample and correction as a post processing technique for interferometric imaging to achieve near diffraction limited resolution are described. Theory, simulation and experimental results are presented for the case of full field interference microscopy. The inventive technique can be applied to any coherent interferometric imaging technique and does not require knowledge of any system parameters. In one embodiment of the present application, a fast and simple way to correct for defocus aberration is described. A variety of applications for the method are presented. 124-. (canceled)25. A method for characterizing a wavefront in interferometric imaging data on a sample , wherein the interferometric data is generated using a broad bandwidth light source wherein the interferometric data contains information about lateral structure within the sample , said method comprising:isolating an axial subset of the interferometric data corresponding to a depth in sample where the lateral structure is located;dividing the axial subset into lateral subsections at a plane where the wavefront should be characterized;determining a correspondence between at least two of the lateral subsections;characterizing the wavefront using the correspondence; andstoring or displaying the wavefront characterization, or using the wavefront characterization as input to a subsequent process.26. A method as recited in claim 25 , wherein the correspondence between subsections is determined by correlating versions of the structure contained in the at least two subsections.27. A method as recited in claim 25 , wherein the correspondence between subsections is determined by correlating the subsections at a plane substantially optically conjugate to the object depth containing the structure.28. A method as recited in claim 25 , further comprising propagating the axial subset to the plane where the characterization of the ...

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01-01-2015 дата публикации

Method for measuring an angle between two spatially separated elements

Номер: US20150002840A1
Принадлежит: HEXAGON TECHNOLOGY CENTER GMBH

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

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05-01-2017 дата публикации

OPTICAL FINGERPRINT IMAGING USING HOLOGRAPHY

Номер: US20170003649A1
Автор: Sinha Supriyo
Принадлежит:

Various systems for imaging are provided. An electronic device includes a biometric sensor and a processing system. The biometric sensor includes an illuminator, a mirror, a biometric sensor array and a beam splitter. The beam splitter splits a beam received from the illuminator into a first beam incident on a biometric sensing area and a second beam incident on the mirror. The beam splitter combines the reflected beams from the biometric sensing area and the mirror. Thereafter, the processing system receives data from the sensor array and reconstructs the biometric image. 1. An electronic device comprising:a biometric sensor, the biometric sensor comprising:an illuminator;a mirror;a biometric sensor array; and split a beam received from the illuminator into a first beam incident on a biometric sensing area and a second beam incident on the mirror; and', 'combine a reflected first beam reflected from the biometric sensing area and a reflected second beam reflected from the mirror into a third beam incident on the sensor array, wherein the reflected first beam and the reflected second beam are combined off-axis with respect to each other in the third beam;, 'a beam splitter, the beam splitter configured to transform pixel data from the sensor array into a frequency spectrum, the frequency spectrum including a zeroth order image, a real image, and a virtual image;', 'filter the frequency spectrum outside of a frequency range corresponding to the real image; and', 'reconstruct the filtered frequency spectrum into a biometric image., 'a processing system coupled to the sensor array, the processing system configured to2. The electronic device of claim 1 , wherein the biometric sensor is a fingerprint sensor.3. The electronic device of claim 1 , further comprising a protective layer disposed over the beam splitter claim 1 , wherein the biometric sensing area is at an upper surface of the protective layer.4. The electronic device of claim 3 , wherein the protective layer ...

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05-01-2017 дата публикации

Digital Holographic Device

Номер: US20170003650A1
Принадлежит:

The techniques, apparatus, material and systems are described for a portable camera device which can be attached to the camera port of a conventional transmission or reflection microscope for complex wave front analysis. At least one holographic element (BS, grating) splits the beam (s) containing the sample information in two beams (r,o) and filters (r′, o′) them. The proposed invention has a relaxed alignment sensitivity to displacement of the beam coming from the microscope. Besides since it compensates the coherence plane tilt angle between reference and object arms, it allows for creating high-visibility interference over the entire field of view. The full-field off-axis holograms provide the whole sample information. 125-. (canceled)26. A hologram generating device for generating a hologram from a sample beam formed by collecting electromagnetic radiation coming from an object , the device comprising:a beam generation unit arranged to split the sample beam into an object beam and a reference beam, the object beam being a non-filtered or partially filtered first portion of the sample beam and the reference beam being a partially or completely filtered second portion of the sample beam;a coherence management unit arranged to orientate a coherence plane of at least one of the object beam and the reference beam to render the coherence plane of the object beam and the reference beam substantially parallel; anda hologram creation unit configured to combine the object beam and the reference beam to create the hologram by interference between the reference beam and the object beam.27. The device according to claim 26 , wherein the beam generation unit includes a holographic filtering element configured to split the sample beam and to spatially filter the sample beam to produce an object beam and a reference beam including the filtered split sample beam of spatial intensity uniformity; or includes a splitter to split the sample beam into a first split beam and a second ...

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05-01-2017 дата публикации

HOLOGRAM RECORDING DEVICE AND HOLOGRAM RECORDING METHOD

Номер: US20170003651A1
Автор: NIU Bei, WANG TAO, WEI Wei, WU Naifu
Принадлежит:

The present disclosure discloses a hologram recording device and a hologram recording method. The hologram recording device comprises an object imaging unit comprising a cavity for accommodating an object whose interior wall is a reflective surface, and a light modulating unit configured to produce incident light and reference light interfering with the incident light and to direct the incident light to the object imaging unit. The cavity is provided with an imaging aperture for imaging of the object and at least one light incidence aperture for allowing the incident light to enter the cavity and irradiate on the object, such that an image of the object is formed at a location corresponding to the imaging aperture outside the cavity, and image light produced upon the imaging of the object interferes with the reference light at the location for recording of an image surface hologram. 1. A hologram recording device , comprising:an object imaging unit comprising a cavity for accommodating an object, an interior wall of the cavity being a reflective surface; anda light modulating unit configured to produce incident light and reference light interfering with the incident light and to direct the incident light to the object imaging unit,wherein the cavity is provided with an imaging aperture for imaging of the object and at least one light incidence aperture for allowing the incident light to enter the cavity and irradiate on the object, such that an image of the object is formed at a location corresponding to the imaging aperture outside the cavity, image light produced upon the imaging of the object interfering with the reference light at the location for recording of an image surface hologram.2. The hologram recording device according to claim 1 , wherein the object imaging unit comprises an upper parabolic mirror and a lower parabolic mirror whose reflective surfaces are arranged opposite to each other claim 1 , the upper parabolic mirror and lower parabolic mirror ...

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05-01-2017 дата публикации

HOLOGRAPHIC IMAGE RECORDING AND RECONSTRUCTING METHOD

Номер: US20170003652A1
Автор: LIN CHIH-HSIUNG
Принадлежит: INN VALLEY TECHNOLOGY INC.

A holographic image recording method is disclosed, that is realized through utilizing a holographic image fetching and recording device, including the following steps: using an image fetching device to fetch an image of a target object placed on a rotation table rotating at a fixed speed, the image thus obtained is transmitted to a display panel through a connection line; using a light emitting unit to emit coherent light to a first reflector; that reflects the coherent light to light splitter; and the light splitter splits the coherent light along a first light path and a second light path into an object light and a reference light, and transmits them onto a holographic film to interfere with each other, to form a holographic image. A holographic image reconstructing method is also disclosed, to reconstruct and form a 3D holographic image floating above the holographic film. 1. A holographic image recording method , that is realized through utilizing a holographic image fetching and recording device , including a holographic image fetching device , that includes an image fetching device and a rotation table; and a holographic image recording device , that includes: a light emitting unit , a first reflector , a light splitter , a first polarizer , a second reflector , a display panel , a holographic film , a second polarizer , and a third reflector;the holographic image recording method includes the following steps:using the image fetching device itself remaining fixed, to fetch an image of a target object placed on a rotation table rotating at a fixed speed, the image thus obtained is transmitted to the display panel through a connection line;using a light emitting unit, to emit a coherent light to a first reflector;the first reflector receives the coherent light and reflects it to the light splitter;the light splitter reflects the coherent light along a second light path to the second polarizer, to form into a reference light;the second polarizer polarizes the ...

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04-01-2018 дата публикации

Method and system for monitoring a building structure

Номер: US20180003499A1

A system for monitoring a building structure is described. The system comprises a laser source which emits an infrared radiation and an interferometric arrangement which divides the radiation into an object beam and a reference beam. The object beam irradiates the building structure and is scattered by it, while the reference beam interferes with the scattered object beam so as to create a hologram of the building. The system also comprises a sensor which detects a sequence of holograms and a processing unit which reconstructs the evolution in time of deformations or displacements of the building by numerically processing the sequence of holograms. The system—being based on digital holography—offers various advantages compared to known monitoring techniques, for example techniques which make use of seismometers (possibility of remote monitoring, substantial space-time continuity of the monitoring, capacity for detecting a wider range of deformations and displacements).

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07-01-2016 дата публикации

HOLOGRAPHIC PROJECTION DEVICE FOR THE ENLARGEMENT OF A VISIBILITY REGION

Номер: US20160004220A1
Автор: RENAUD-GOUD Philippe
Принадлежит:

A holographic projection apparatus and a method for magnifying a virtual visibility region, for observing a reconstructed scene with at least one light modulation device and with at least one light source having sufficiently coherent light for generating a wavefront of a scene that is coded in the light modulation device. By means of imaging the wavefront into a viewer plane, it is possible to generate the virtual visibility region for observing the reconstructed scene. The virtual visibility region has at least two virtual viewer windows. In this case, the virtual viewer windows are dimensioned such that the reconstructed scene can always be observed without tracking of the viewer windows upon movement of a viewer in the viewer plane. 1. A method for an enlargement of a virtual visibility region for watching a reconstructed scene , comprising:emitting sufficiently coherent light from at least one light source so as to generate a wave front of the scene being encoded on at least one light modulator device; andgenerating a virtual visibility region for watching the reconstructed scene by imaging the wave front into an observer plane, where the virtual visibility region comprises at least two virtual observer windows, which are dimensioned such that the reconstructed scene is watchable without tracking the observer windows if an observer moves in the observer plane, and wherein the at least two virtual observer windows are generated in the virtual visibility region by multiplexing in order to enlarge the virtual visibility region.2. The method according to claim 1 , wherein the visibility region is reproduced using temporal multiplexing in order to enable multiple observers to watch the reconstructed scene.3. The method according to claim 1 , wherein in order to enable multiple observers to watch the reconstructed scene claim 1 , the virtual visibility region is reproduced in at least one observer plane.4. The method according to claim 1 , wherein the visibility ...

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07-01-2016 дата публикации

METHODS AND APPARATUS FOR COHERENT HOLOGRAPHIC DATA CHANNELS

Номер: US20160004221A1
Принадлежит:

Methods and devices for coherent holographic data channel techniques are presented. Coherent techniques for data detection generally include homodyne and heterodyne detection. Techniques for quadrature homodyne detection, resampling quadrature homodyne detection, n-rature homodyne detection, and spatial wavefront demodulation are presented. Coherent detection techniques in turn enable coherent channel modulation techniques such as phase modulation (including binary phase shift keying, or BPSK; phase quadrature holographic multiplexing, or QPSK; and quadrature amplitude modulation, or QAM). Coherent detection may also enable or improve the performance of other channel techniques such as partial response maximum likelihood (PRML), the various classes of extended PRML, and of noise-predictive maximum likelihood (NPML) detection. 1. A method for retrieving information stored in a holographic storage medium , the method comprising:illuminating at least one hologram in the holographic storage medium with at least one probe beam so as to generate at least one reconstructed signal beam representing at least some information stored in the holographic storage medium;detecting a plurality of images, each image in the plurality of images comprising a respective spatial interference pattern in a plurality of spatial interference patterns, the plurality of spatial interference patterns comprising (i) a first spatial interference pattern generated by interference of the at least one reconstructed signal beam with at least one local oscillator beam at a first phase difference between the at least one reconstructed signal beam and the at least one local oscillator beam and (ii) a second spatial interference pattern generated by interference of the at least one reconstructed signal beam with the at least one local oscillator beam at a second phase difference between the at least one reconstructed signal beam and the at least one local oscillator beam; andgenerating a representation ...

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04-01-2018 дата публикации

LENS RESERVOIR AND EMBEDDED OPTICAL ELEMENT FOR NEAR EYE DISPLAY

Номер: US20180003974A1
Принадлежит:

Disclosed herein is a lens for a wearable projection system. The lens includes a holographic optical element embedded within the lens and covering a portion of the viewable area of the lens. The lens can be manufactured by filling a cavity in a lens blank with a photosensitive material and exposing the photosensitive material to a number of light beams to form the HOE. 1. A method to manufacture a wearable display lens , comprising:filling a cavity in a lens blank with a photosensitive material; andexposing the first material with at least one light beam to form a holographic optical element (HOE) in the photosensitive material.2. The method of claim 1 , comprising claim 1 , shaping the lens blank to an eyewear lens shape.3. The method of claim 1 , comprising:injecting, via a port in the outside surface of the lens blank, the polymer material into the cavity to fill the cavity; andsealing the port.4. The method of claim 1 , wherein the photosensitive material comprises polymer.5. The method of claim 4 , wherein the photosensitive material comprises MEK-coflouropolymer-monomer.6. The method of claim 1 , comprising:providing the partial lens blank; andemptying the cavity in the partial lens blank.7. The method of claim 6 , emptying the cavity in the partial lens blank comprising removing a filler material from the cavity claim 6 , the filler material to form the cavity during forming of the partial lens blank.8. The method of claim 1 , comprising:providing a first partial lens blank;providing a second partial lens blank, each of the first and second partial lens blank comprising a recess;coupling the first partial lens blank and the second partial lens blank to form the lens blank, the recesses aligned to form the cavity.9. The method of claim 8 , comprising drilling a hole in the first partial lens blank to access the cavity.10. The method of claim 8 , filling the cavity in the lens blank comprising sandwiching the photosensitive material between the first partial ...

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04-01-2018 дата публикации

HOLOGRAPHIC OPTICAL ELEMENT DESIGN AND MANUFACTURING

Номер: US20180003975A1
Принадлежит: Intel Corporation

Disclosed herein are devices and methods to provide a holographic optical element (HOE) having a modified shape and a structural attribute. At least one wavefront may be used to cause a first structure change in a material, used for the HOE, in a first shape. The material used for the HOE may be changed from the first shape to the modified shape to cause a second structure change in the material. The structural attribute in the material may be provided from a combination of the first structure change and the second structure change. 1. A method to manufacture a holographic optical element (HOE) , the method comprising:impinging at least one wavefront on a material having a first shape, the at least one wavefront to cause a first structure change in the material;shaping the material to a second shape to cause a second structure change in the material; andforming a holographic optical element (HOE), the HOE comprising the material having the second shape and a structural attribute, the structural attribute based in part on a combination of the first structure change and the second structure change.2. The method to manufacture the HOE according to claim 1 , further comprising impinging a plurality of wavefronts on the material having the first shape to cause the first structure change in the material.3. The method to manufacture the HOE according to claim 1 , further comprising forming the HOE having the second shape and the structural attribute to conform to a defined design.4. The method to manufacture the HOE according to claim 1 , wherein the material is a photopolymer claim 1 , emulsion material claim 1 , crystal claim 1 , or photoresist-based material.5. A holographic optical element (HOE) manufactured by the method of .6. The method to manufacture the HOE according to claim 1 , wherein the first shape of the material is flat claim 1 , the second shape of the material is curved claim 1 , and the structural attribute is a nano structure of the material.7. The ...

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04-01-2018 дата публикации

Near-to-eye display device with spatial light modulator and pupil tracker

Номер: US20180003981A1
Автор: Hakan Urey
Принадлежит: Cy Vision Inc

A near-to-eye display device includes a spatial light modulator, a rotatable reflective optical element and a pupil-tracking device. The pupil-tracking device tracks the eye pupil position of the user. Based on the data provided by the pupil-tracking device, the reflective optical element is rotated such that the light modulated by the spatial light modulator is directed towards the user's eye pupil.

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07-01-2021 дата публикации

DEVICE AND METHOD FOR PRODUCING MASTER DIFFRACTION GRATING

Номер: US20210003752A1
Автор: OUE Yuki
Принадлежит: SHIMADZU CORPORATION

A device for producing a master diffraction grating includes a light source unit and a reflecting member . The light source unit forms a first interference fringe by irradiating a substrate surface of a master substrate with light. The reflecting member reflects the light from the light source unit reflected on the substrate surface of the master substrate and guides the light again to the substrate surface side to form a second interference fringe. A resist pattern based on the first interference fringe and the second interference fringe is formed on the substrate surface of the master substrate 1. A device for producing a master diffraction grating serving as a matrix for producing a replica diffraction grating , the device comprising:a light source unit for forming a first interference fringe by irradiating a substrate surface of a master substrate with light; anda reflecting member for reflecting light from the light source unit reflected on the substrate surface of the master substrate and guiding the light again to the substrate surface, so that a second interference fringe is formed, whereina resist pattern based on the first interference fringe and the second interference fringe is formed on the substrate surface of the master substrate.2. The device for producing a master diffraction grating according to claim 1 , whereinthe reflecting member is disposed at a position displaced along a direction parallel to a direction in which the first interference fringe extends, with respect to an optical axis of light from the light source unit.3. The device for producing a master diffraction grating according to claim 2 , whereinthe light source unit includes a condenser lens, a pinhole through which light condensed by the condenser lens passes, and a concave mirror for making light that has passed through the pinhole parallel, andthe reflecting member is disposed between the concave mirror and the substrate surface of the master substrate.4. A method for producing a ...

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07-01-2021 дата публикации

LIGHT-GUIDING PLATE, AND HOLOGRAM RECORDING DEVICE AND HOLOGRAM RECORDING METHOD USED FOR THE SAME

Номер: US20210003763A1
Принадлежит:

A hologram recording device for producing a hologram that diffracts incident light includes: a laser light source; a first half-wave plate that controls a polarization direction of a light beam emitted from the laser light source; a polarizing beam splitter that reflects S-polarized light to emit the S-polarized light as an “A” light ray and transmits P-polarized light to emit the P-polarized light as a “B” light ray with respect to the light beam passing through the first half-wave plate, and splits the light beam in two directions; a first wedge prism mirror that reflects the “A” light ray; a second half-wave plate that polarizes the “B” light ray into S-polarized light; a second wedge prism mirror that reflects the S-polarized light polarized by the second half-wave plate; and a recording medium irradiated with light rays reflected by the first wedge prism mirror and the second wedge prism mirror. 1. A light-guiding plate having a light diffractive portion that diffracts incident light by multiple-recorded hologram ,wherein the light diffractive portion has at least two or more regions and diffracts a different wavelength depending on each region when a certain light ray is incident, and power densities of light output diffracted for the different wavelengths are the same.2. The light-guiding plate according to claim 1 , wherein the light diffractive portion is used as an outgoing coupler that converts light propagating inside the light-guiding plate to light emitted outside the light-guiding plate.3. A hologram recording device for producing a hologram that diffracts incident light claim 1 , comprising:a laser light source;a first half-wave plate that controls a polarization direction of a light beam emitted from the laser light source;a polarizing beam splitter that reflects S-polarized light to emit the S-polarized light as an “A” light ray and transmits P-polarized light to emit the P-polarized light as a “B” light ray with respect to the light beam passing ...

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04-01-2018 дата публикации

Method and Master for Producing a Volume Hologram

Номер: US20180004156A1

A method for producing a volume hologram with at least one first area in a first color and at least one second area in a second color includes, providing a volume hologram layer made of a photopolymer; arranging a master with a surface structure on the volume hologram layer; exposing the master using coherent light, wherein light which is incident on at least one first partial area of the surface of the master is diffracted or reflected in the direction of the at least one first area of the volume hologram layer and light which is incident on at least one second partial area of the surface of the master is diffracted or reflected in the direction of the at least one second area of the volume hologram, and wherein the light diffracted or reflected by the first and second partial areas differs in at least one optical property.

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04-01-2018 дата публикации

COHERENCE ADJUSTABLE DIGITAL HOLOGRAPHY SYSTEM

Номер: US20180004157A1

Disclosed is a coherence-adjustable digital holography system. More particularly, the coherence-adjustable digital holography system includes a light source part for generating low-interference light; a dispersion part for dispersing the generated light, an adjustment part for adjusting coherence by adjusting a spectrum bandwidth of the light which has passed through the dispersion part; and a detection part for detecting a holographic image of a subject from the adjusted light. In accordance with such a configuration, an interference fringe may be easily obtained through coherence adjustment, whereby the accuracy of a detected holographic image may be improved. 1. A coherence-adjustable digital holography system , comprising:a light source part for generating low-interference light;a dispersion part for dispersing the generated light;an adjustment part for adjusting coherence by adjusting a spectrum bandwidth of the light which has passed through the dispersion part; anda detection part for detecting a holographic image of a subject from the adjusted light.2. The coherence-adjustable digital holography system according to claim 1 , wherein the light source part generates low-interference light having multiple wavelengths excluding a laser.3. The coherence-adjustable digital holography system according to claim 1 , wherein the light source part comprises at least any one of an LED lamp and a halogen lamp.4. The coherence-adjustable digital holography system according to claim 1 , wherein the dispersion part widely disperses a wavelength of light generated from the light source part.5. The coherence-adjustable digital holography system according to claim 1 , wherein the dispersion part comprises a triangular or annular prism.6. The coherence-adjustable digital holography system according to claim 1 , wherein the adjustment part comprises at least one slit or iris for adjusting a selection frequency of the light.7. The coherence-adjustable digital holography system ...

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04-01-2018 дата публикации

SYSTEM, APPARATUS AND METHOD FOR EXTRACTING THREE-DIMENSIONAL INFORMATION OF AN OBJECT FROM RECEIVED ELECTROMAGNETIC RADIATION

Номер: US20180004158A1
Автор: BROOKER Gary, ROSEN Joseph
Принадлежит: CELLOPTIC, INC.

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. An image capture assembly is configured to capture an image of the diffracted electromagnetic radiation and produce the hologram of the object from the captured image. 1. An apparatus configured to produce a hologram of an object , said apparatus comprising:an electromagnetic source configured to provide incoherent electromagnetic radiation on the object;a correlator comprising a first optical assembly configured to receive incoherent electromagnetic radiation reflected by or scattered from the object and transmit transformed electromagnetic radiation, a mask assembly configured to receive the transformed electromagnetic radiation and transmit amplitude and/or phase modified electromagnetic radiation, and a second optical assembly configured to receive the amplitude and/or phase modified electromagnetic radiation and further transmit transformed electromagnetic radiation;an image capture assembly configured to capture an image of the further transmitted transformed electromagnetic radiation; anda processing system including at least one processor, the processing system configured to produce the hologram of the object based on the captured image.2. The apparatus of claim 1 , wherein the first optical assembly claim 1 , the mask assembly claim 1 , the second optical assembly claim 1 , and the image capture assembly are disposed along a common optical path.3. The apparatus of claim 1 , wherein the mask assembly includes one or more diffractive optical elements claim 1 , each of the one or more diffractive optical elements including an array of plural transform regions claim 1 , each of which is configured to ...

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07-01-2021 дата публикации

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

Номер: US20210003843A1
Автор: Gerald FÜTTERER
Принадлежит: SeeReal Technologies SA

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.

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07-01-2021 дата публикации

PHOTOPOLYMER COMPOSITION

Номер: US20210003919A1
Принадлежит:

The present disclosure relates to a photopolymer composition, and more particularly, to a compound having a novel structure, a photopolymer composition including the compound as a dye, a hologram recording medium produced from the photopolymer composition, an optical element including the hologram recording medium, and a holographic recording method using the photopolymer composition. 2. The compound according to claim 1 ,{'sup': '−', 'the An is a halide ion, a cyano ion, an alkoxy ion having 1 to 30 carbon atoms, an alkoxycarbonyl ion having 1 to 30 carbon atoms, a sulfonate ion, an alkyl-sulfonate ion having 1 to 30 carbon atoms, a substituted or unsubstituted aromatic sulfonate ion having 6 to 30 carbon atoms, an alkyl sulfate ion having 1 to 30 carbon atoms, a sulfate ion, or a substituted or unsubstituted aromatic sulfate ion having 6 to 30 carbon atoms.'}3. The compound according to claim 1 ,wherein in the Chemical Formula 1,X is silicon (Si),n and m are each 1,{'sub': 1', '2, 'Zand Zare each nitrogen (N),'}{'sub': 1', '12, 'Rto Rare identical to or different from each other, and each is hydrogen, an alkyl group having 1 to 20 carbon atoms; or a halogen group,'}{'sub': '1', 'Aris an aromatic divalent functional group having 6 to 20 carbon atoms to which at least one hydrogen, an alkyl group having 1 to 20 carbon atoms or halogen group is bonded, and'}{'sub': '1', 'claim-text': {'br': None, 'sub': 2', '2, '—Y—Ar\u2003\u2003[Chemical Formula 2]'}, 'Yis a functional group represented by Chemical Formula 2.'}in the Chemical Formula 2,{'sub': '2', 'Yis an ether group or an ester, and'}{'sub': '2', 'Aris an aliphatic functional group having 1 to 20 carbon atoms or an aromatic functional group having 6 to 20 carbon atoms substituted with one or more halogen groups.'}4. A photopolymer composition comprising:a polymer matrix or a precursor thereof;{'claim-ref': {'@idref': 'CLM-00001', 'claim 1'}, 'a dye including the compound of ;'}a photoreactive monomer; anda ...

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07-01-2021 дата публикации

TILEABLE, COPLANAR, FLAT-PANEL 3-D DISPLAY WITH TACTILE AND AUDIO INTERFACES

Номер: US20210003966A1
Автор: Smalley Daniel
Принадлежит:

A method and system for a scalable multi-sense user experience are disclosed. A three-dimensional (“3-D”) display is disposed behind a slit plane comprising slits and ultrasonic transducers. Light from the 3-D display passes through the slits in the slit plane to generate a 3-D image. The ultrasonic transducers on the front of the slit plane, i.e., opposite the side where the 3-D display is disposed, generate directed acoustic field and/or a formed tactile field. Because the generating components for all three senses, i.e., visual, audio, and tactile, are coplanar, units may be tiled and thereby scaled to generate larger multi-sense experiences. 1. An apparatus for generating a multi-sense user experience , comprising:a 3-D display apparatus; anda slit plane having slits and ultrasonic transducers; the 3-D display is coplanar with the slit plane; and', 'the slits in the slit plane allow light from the 3-D display apparatus to pass through the 3-D display to generate a 3-D image on the side of the slit plane opposite the 3-D display apparatus., 'wherein2. The apparatus of claim 1 , wherein the ultrasonic transducers are disposed on the side of the slit plane opposite the 3-D display apparatus.3. The apparatus of claim 1 , wherein the ultrasonic transducers are configured to generate at least one of an audio field or a tactile field.4. The apparatus of claim 3 , wherein an audio field generated by the ultrasonic transducers is at least partially a directed audio field.5. The apparatus of claim 3 , wherein a tactile field generated by the ultrasonic transducers is at least partially a shaped tactile field.6. The apparatus of claim 3 , wherein the apparatus is configured to generate a three-sense user experience comprising a visual experience claim 3 , an audio experience claim 3 , and a tactile experience.7. The apparatus of claim 1 , wherein the slits are rectangular.8. The apparatus of claim 1 , wherein the slits are non-rectangular.9. The apparatus of claim 1 , ...

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07-01-2021 дата публикации

METHOD AND APPARATUS FOR PROCESSING HOLOGRAPHIC IMAGE

Номер: US20210003967A1
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

Provided are methods of processing a holographic image and apparatuses using the methods. A method includes obtaining image data with respect to a three-dimensional (3D) object, obtaining interference patterns in a computer-generated hologram (CGH) plane by performing a Fourier transform on the image data, and generating a CGH with respect to the 3D object based on the interference patterns, wherein the Fourier transform is performed based on a focal length of an eye lens of an observer. 1. A method of processing a holographic image , the method comprising:obtaining image data with respect to a three-dimensional (3D) object;obtaining interference patterns in a computer-generated hologram (CGH) plane by performing a Fourier transform on the image data; andgenerating a CGH with respect to the 3D object based on the interference patterns,wherein the Fourier transform is performed based on a focal length of an eye lens of an observer.2. The method of claim 1 , wherein the Fourier transform comprises a primary Fourier transform for calculating propagation of light waves from a retinal plane to an eye lens plane of the observer claim 1 , and a secondary Fourier transform for calculating the propagation of light waves from the eye lens plane to the CGH plane based on the focal length of the eye lens of the observer.3. The method of claim 1 , further comprising:storing vision information of at least one user in a memory; andreading vision information of a user matching vision information of the observer from the stored vision information of the at least one user.4. The method of claim 3 , wherein the vision information of the at least one user comprises at least one of a focal length of an eye lens of the at least one user claim 3 , a refractive power of a lens for correction of the at least one user claim 3 , a vision of the at least one user claim 3 , a distance from a retinal plane to the eye lens plane of the at least one user claim 3 , and a radius of a pupil of the at ...

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07-01-2021 дата публикации

Transparent Flat-Panel Holographic Display

Номер: US20210003968A1
Принадлежит: Massachusetts Institute of Technology

In a method for forming a holographic image, light is provided to a flat-panel holographic video display that includes waveguide elements that each have a light-guiding substrate and an array of transducers configured to produce a diffraction grating comprising surface acoustic waves. The grating causes the waveguide to outcouple light, focusing it to, or producing wavefront curvatures consistent with it having emanated from, one or more points, in order to form a holographic image. The transducer array may include a large number of densely packed, vertically-adjacent transducers for each hogel for full parallax or may include a small number of vertically-adjacent transducers and a cylindrical optical element for each hogel. The display may be edge-illuminated by a collinear multicolor source. The substrate exit face may have nanopatterned areas alternated with flat areas in order to create regions of optimal internal reflection next to regions of low reflection.

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07-01-2021 дата публикации

WIDE FIELD OF VIEW HYBRID HOLOGRAPHIC DISPLAY

Номер: US20210003969A1
Принадлежит: Real View Imaging Ltd.

A display for displaying a wide Field of View (FoV) scene including a holographic image within the scene, including a first Spatial Light Modulator (SLM) and an optical system for producing a first holographic image at a center of a displayed scene, and a second image display for producing at least a first additional image adjacent to the first holographic image. In some embodiments an augmented reality display is used for the displaying of the first holographic image at the center of a field of view and the second image adjacent to the first holographic image. In some embodiments a virtual reality display is used for the displaying of the first holographic image near the center of a field of view and the second image adjacent to the first holographic image. Related apparatus and methods are also described. 1. A system for displaying a wide Field of View (FoV) scene including a three-dimensional image within the scene , comprising:a head mounted display (HMD) comprising:a first display for producing a first, three-dimensional (3D) portion of a scene;an optical system for imaging the first 3D image toward a center of a viewer's field-of-view (FOV);a second display for producing a different resolution second image of a second portion of the scene next to the first 3D image; andwherein the optical system is arranged to allow the viewer a real view of the real world through the optical system,thereby combining a view of the first 3D image, the second image and the real world.2. The system of claim 1 , and further comprising a viewer pupil tracking component for tracking the viewer's pupil and wherein the viewer pupil tracking component provides data for controlling the first display and the optical system for displaying the first 3D image to the center of the viewer's FOV.3. The system of claim 1 , in which the second display comprises a lower spatial resolution display than the first display.4. The system of claim 1 , in which the second display comprises a display for ...

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03-01-2019 дата публикации

ENCODED ENERGY WAVEGUIDES FOR HOLOGRAPHIC SUPER RESOLUTION

Номер: US20190004326A1
Принадлежит: LIGHT FIELD LAB, INC.

Disclosed embodiments include an energy device having an array of waveguide elements configured to direct energy along a plurality of energy propagation paths through the device, and an energy encoding element operable to limit propagation of energy along the plurality of paths. Energy uninhibited propagation paths may extend through first and second regions of energy locations, the first and seconds regions being overlapping and offsetting, and the energy encoding element may limit propagation of energy through each energy location in the first and second regions to one uninhibited energy propagation path. In an embodiment, the energy encoding element may limit propagation along uninhibited propagation paths through the first region at a first moment in time, and through the second region at a second moment in time. An energy system comprising an energy device subsystem and an energy combiner may be configured to superimpose energy from the energy locations. 1. An energy device comprising:an array of waveguide elements, wherein the array of waveguide elements comprises a first side and a second side, the array of waveguide elements being configured to direct energy therethrough along a plurality of energy propagation paths which extend through a plurality of energy locations on the first side of the array; andan energy encoding element operable to limit propagation of energy along the plurality of energy propagation paths;wherein uninhibited energy propagation paths through first and second waveguide elements of the array of waveguide elements define first and second regions of energy locations, the first and second regions being overlapping and offsetting; andfurther wherein, the energy encoding element substantially limits propagation of energy through each energy location in the first and second regions to one uninhibited energy propagation path;wherein the uninhibited energy propagation paths through first and second waveguide elements form at least a portion ...

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03-01-2019 дата публикации

Dynamic Holography Printing Device

Номер: US20190004476A1
Принадлежит: Dualitas Ltd

A printing device ( 106 ) includes a laser source ( 110 ) and a LCOS-SLM (Liquid Crystal on Silicon Spatial Light (Modulator, 112 ). The printing device generates a laser control signal and a LCOS-SLM control signal. The laser source generates a plurality of incident laser beams based on the laser control signal. The LCOS-SLM receives the plurality of incident laser beams, modulates the plurality of incident laser beams based on the LCOS-SLM control signal, and generates a plurality of holographic wavefronts ( 214, 216 ). Each holographic wavefront forms at least one focal point. The printing device cures a surface layer of a target material ( 206 ) at interference points of focal points of the plurality of holographic wavefronts. The cured surface layer of the target material forms a two-dimensional printed content.

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03-01-2019 дата публикации

OPTICAL DEVICES FOR AUTHENTICATION AND METHODS OF MAKING SAME

Номер: US20190004477A1
Принадлежит:

The invention optical device comprising a self-processing photopolymer material configured to produce a variable two- or three- dimensional diffraction pattern when said material is illuminated by a light source. The invention provides a new material science and process technology which produces a serialisable anti-counterfeit optical device, based on a self-processing photopolymer. 1. A fully transparent optical device comprising a self-processing photopolymer material patterned to diffract light from the volume of the material to generate a 2D or a 3D image when illuminated by a light source , wherein the optical device is patterned by using a single laser beam.2. The optical device of claim 1 , wherein the optical device is patterned by an in-line holographic recording of a spatially transformed wavefront.3. The optical device of claim 1 , wherein the photopolymer material comprises N-phenylglycine claim 1 , NPG claim 1 , glycerol triethanolamine claim 1 , TEA claim 1 , polyvinylalcohol claim 1 , PVA claim 1 , and one or more of the monomers N-isopropylacrylamide claim 1 , acrylamide or diacetone acrylamide.4. The optical device of claim 3 , wherein the device is a reflection type of device.5. The optical device of claim 3 , wherein the device comprises a reflective surface placed behind a transmission type of device claim 3 , wherein the reflective surface is in direct contact with the photopolymer material.6. The optical device of claim 5 , where the roughness of the reflective surface is of the order of 0.010 micrometres.7. (canceled)8. The optical device of claim 1 , wherein the device is a transmission type of device or a reflection volume hologram device.9. The optical device of claim 1 , wherein the photopolymer material is configured by the recording of a pattern onto the photopolymer material comprising the image or a computer generated hologram of the image to be generated by the device.10. The optical device of claim 9 , wherein the computer generated ...

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03-01-2019 дата публикации

ZERO ORDER BLOCKING AND DIVERGING FOR HOLOGRAPHIC IMAGING

Номер: US20190004478A1
Принадлежит:

A method for directing non-modulated light from a Spatial Light Modulator (SLM) and allowing through modulated light for producing an interference based holographic image, the method including illuminating the SLM with coherent light, thereby producing a mix of light modulated by the SLM and light not modulated by the SLM, and projecting the mix of the modulated light and the not modulated light along an optical axis onto a volume grating, wherein the volume grating directs the not modulated light away from the holographic image and allows through modulated light for producing the holographic image. Related apparatus and methods are also described. 1. A method for directing non-modulated light from a Spatial Light Modulator (SLM) and allowing through modulated light for producing an interference based holographic image , the method comprising:illuminating the SLM with coherent light, thereby producing a mix of light modulated by the SLM and light not modulated by the SLM; andprojecting the mix of the modulated light and the not modulated light along an optical axis onto a volume grating;whereinthe volume grating directs the not modulated light away from the holographic image and allows through modulated light for producing the holographic image.2. The method of claim 1 , in which the volume grating allows through modulated light which is at an angle to the optical axis which is greater than 1 milliradian.3. The method of claim 1 , wherein the volume grating comprises an interference pattern having a rotational symmetry.4. The method of claim 1 , wherein the volume grating comprises an interference pattern of a first plane wave interfering with a second plane wave which has passed through an optical element in a shape of a conic solid.5. The method of claim 1 , wherein the volume grating comprises an interference pattern of a first plane wave interfering with a second plane wave which has passed through an optical element in a shape of a conical lens.6. The method of ...

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13-01-2022 дата публикации

SYSTEM AND METHOD FOR TRANSFORMING HOLOGRAPHIC MICROSCOPY IMAGES TO MICROSCOPY IMAGES OF VARIOUS MODALITIES

Номер: US20220012850A1

A trained deep neural network transforms an image of a sample obtained with a holographic microscope to an image that substantially resembles a microscopy image obtained with a microscope having a different microscopy image modality. Examples of different imaging modalities include bright-field, fluorescence, and dark-field. For bright-field applications, deep learning brings bright-field microscopy contrast to holographic images of a sample, bridging the volumetric imaging capability of holography with the speckle-free and artifact-free image contrast of bright-field microscopy. Holographic microscopy images obtained with a holographic microscope are input into a trained deep neural network to perform cross-modality image transformation from a digitally back-propagated hologram corresponding to a particular depth within a sample volume into an image that substantially resembles a microscopy image of the sample obtained at the same particular depth with a microscope having the different microscopy image modality. 1. A method of transforming an image of a sample obtained with a holographic microscope to an image that substantially resembles a microscopy image obtained with a microscope having a different microscopy image modality comprising:obtaining a single holographic image of the sample with the holographic microscope;back-propagating the holographic image of the sample to a particular depth using image processing software executed on a computing device using one or more processors;inputting the back-propagated holographic image of the sample at the particular depth to a trained deep neural network that is executed by a computing device; andoutputting an image of the sample at the particular depth from the trained deep neural network, wherein the output image substantially resembles a microscopy image of the sample obtained at the same particular depth with a microscope having the different microscopy image modality.2. The method of claim 1 , wherein the ...

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08-01-2015 дата публикации

Holographic Film and Recording Method

Номер: US20150009546A1
Автор: Wiltshire John David
Принадлежит:

This invention relates to holographic film for recording multicolor volume holograms, especially full color volume reflection holograms, and to manufacturing techniques for such film, and to corresponding methods of recording multicolor and full-color volume, in particular volume reflection holograms. We describe a holographic film for recording a multicolor volume hologram, the film comprising: a carrier; a first photosensitive recording layer sensitive to one or both of red and green laser light; and a second photosensitive recording layer sensitive to blue laser light. Both the first and second photosensitive recording layers comprise silver halide and have a grain size of less than 30 nm, and at least one of the photosensitive recording layers has a thickness of greater than 3 μm and less than 5 μm. 15-. (canceled)6. A holographic film for recording a multicolor volume hologram , the film comprising:a carrier;a first photosensitive recording layer sensitive to one or both of red and green laser light; anda second photosensitive recording layer sensitive to blue laser light, wherein the first and second photosensitive recording layers each are translucent to said blue laser light and said one or both of red and green laser light to allow fringe structures defined by phase modulation to be recorded independently in said first and second photosensitive recording layers.7. A holographic film as claimed in wherein both said first and said second photosensitive recording layers comprise photopolymer recording material.8. A holographic film as claimed in wherein both said first and said second photosensitive recording layers comprise silver halide and have a grain size of less than 30 nm claim 6 , and wherein at least one of said first and second photosensitive recording layers has a thickness of greater than 3 μm and less than 5 μm.9. A holographic film as claimed in wherein both said first and said second photosensitive recording layers comprise silver halide and ...

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08-01-2015 дата публикации

Lighting Device for Headlights with a Phase Modulator

Номер: US20150009695A1
Принадлежит: Two Trees Photonics Ltd

There is provided a lighting device arranged to produce a controllable light beam for illuminating a scene. The device comprises an addressable spatial light modulator arranged to provide a selectable phase delay distribution to a beam of incident light. The device further comprises Fourier optics arranged to receive phase-modulated light from the spatial light modulator and form a light distribution. The device further comprises projection optics arranged to project the light distribution to form a pattern of illumination as said controllable light beam.

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12-01-2017 дата публикации

Real-Time 3D Virtual or Physical Model Generating Apparatus for HoloPortal and HoloCloud System

Номер: US20170010584A1
Автор: KIM Heekwan
Принадлежит:

A novel electronic system provides fast three-dimensional model generation, social content sharing of dynamic three-dimensional models, and monetization of the dynamic three-dimensional models created by casual consumers. In one embodiment, a casual consumer utilizes a dedicated real-time D model reconstruction studio with multiple camera angles, and then rapidly create dynamic D models with novel computational methods performed in scalable graphics processing units. In another embodiment, uncalibrated multiple sources of video recording of a targeted object are provided by a plurality of commonly-available consumer video recording devices (e.g. a smart phone, a camcorder, a digital camera, etc.) located at different angles, after which the uncalibrated multiple sources of video recording are transmitted to a novel cloud computing system for real-time temporal, spatial, and photometrical calibration and D model reconstruction. The dynamic D models can be uploaded, listed, and shared among content creators and viewers in an electronic sharing platform. 1. A real-time 3D virtual and physical body double-generating apparatus comprising:a HoloPortal electronic system that incorporates a dedicated physical studio space, which is configured to capture, calibrate, calculate, reconstruct, and generate graphical transformation of a target object to create an electronic 3D body double model;a HoloCloud electronic system comprising consumer-level portable video recording devices positioned circularly around the target object and generate a plurality of multiple-angle video data streams, a scalable number of graphics processing units (GPU's) that execute a pre-processing module and a 3D reconstruction module for calibrating, calculating, reconstructing, and generating graphical transformations to create the electronic 3D body double model that resembles the target object, and a wireless transceiver that transmits the plurality of multiple-angle video data streams from the ...

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12-01-2017 дата публикации

METHODS AND SYSTEMS FOR GENERATING A THREE-DIMENSIONAL HOLOGRAPHIC MASK

Номер: US20170010585A1
Автор: Menon Rajesh, WANG Peng
Принадлежит:

A system for surface patterning using a three dimensional holographic mask includes a light source configured to emit a light beam toward the holographic mask. The holographic mask can be formed as a topographical pattern on a transparent mask substrate. A semiconductor substrate can be positioned on an opposite site of the holographic mask as the light source and can be spaced apart from the holographic mask. The system can also include a base for supporting the semiconductor substrate. 1. An iterative pixelated perturbation method of generating a three dimensional holographic mask based on a predetermined three dimensional pattern , comprising:providing a starting pattern for the holographic mask;computing images at multiple planes parallel to the holographic mask using a processor;computing an image metric representing a combination of diffraction efficiency of the holographic mask and fidelity of a resulting image compared with the predetermined pattern for the images at the multiple planes using the processor;perturbing an optic height of a first pixel in the starting pattern to create an intermediate pattern;computing the resulting intermediate images and computing an intermediate metric for the intermediate pattern; anddetermining whether the intermediate metric for the intermediate pattern is an improvement over the metric for the starting pattern, wherein the holographic mask is formed as a topographical pattern of the predetermined three dimensional pattern on a transparent mask substrate and includes multiple discrete levels at defined elevations.2. The method of claim 1 , wherein the image metric includes at least one of diffraction efficiency claim 1 , image fidelity claim 1 , exposure latitude claim 1 , line-edge roughness claim 1 , manufacturability claim 1 , normalized inverse image slope claim 1 , robustness claim 1 , and throughput.3. The method of claim 2 , wherein the image metric includes diffraction efficiency and image fidelity.4. The method ...

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14-01-2016 дата публикации

Method for regulating the relative position of an analyte in relation to a light beam

Номер: US20160011117A1

A method for regulating the relative position of an analyte of a sample ( 16 ) in relation to a light beam (F) includes the illumination of the analyte of the sample ( 16 ) with the light beam (F), capturing by an imaging device ( 38 ) a transmission image of the beams scattered by the analyte of the sample ( 16 ) in order to establish a diffraction pattern, and modifying the relative position of the analyte of the sample ( 16 ) in relation to the light beam (F) according to at least one property of the diffraction pattern.

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11-01-2018 дата публикации

Automated real-time particle characterization and three-dimensional velocimetry with holographic video microscopy

Номер: US20180011001A1
Принадлежит: New York University NYU

An in-line holographic microscope can be used to analyze on a frame-by-frame basis a video stream to track individual colloidal particles' three-dimensional motions. The system and method can provide real time nanometer resolution, and simultaneously measure particle sizes and refractive indexes. Through a combination of applying a combination of Lorenz-Mie analysis with selected hardware and software methods, this analysis can be carried out in near real time. An efficient particle identification methodology automates initial position estimation with sufficient accuracy to enable unattended holographic tracking and characterization.

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11-01-2018 дата публикации

Optical modulators

Номер: US20180011384A1

Disclosed is an optical modulator. An optical modulator comprises a substrate, an upper transparent electrode on the substrate, a partition wall providing a chamber between the substrate and the upper transparent electrode, an optical modulation member provided in the chamber and disposed on the substrate, and an electrolyte filling the chamber and including a first metal in an ionic state. The optical modulation member comprises a reflection layer on the substrate, and a lower transparent electrode on the reflection layer.

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11-01-2018 дата публикации

Large Area Lens-Free Imaging Device

Номер: US20180011443A1
Принадлежит: IMEC VZW

Embodiments described herein relate to a large area lens-free imaging device. One example is a lens-free device for imaging one or more objects. The lens-free device includes a light source positioned for illuminating at least one object. The lens-free device also includes a detector positioned for recording interference patterns of the illuminated at least one object. The light source includes a plurality of light emitters that are positioned and configured to create a controlled light wavefront for performing lens-free imaging. 1. A lens-free device for imaging one or more objects , the lens-free device comprising:a light source positioned for illuminating at least one object; anda detector positioned for recording interference patterns of the illuminated at least one object,wherein the light source comprises a plurality of light emitters that are positioned and configured to create a controlled light wavefront for performing lens-free imaging.2. The lens-free device according to claim 1 , wherein the plurality of light emitters comprises a photonic phased array.3. The lens-free device according to claim 1 , wherein the controlled light wavefront comprises a quasi-planar wavefront for performing large-area claim 1 , lens-free imaging.4. The lens-free device according to claim 1 , wherein the light emitters comprise grating couplers.5. The lens-free device according to claim 1 , wherein the light emitters comprise micro-structures fabricated in a slab of material suitable for propagating light.6. The lens-free device according to claim 1 , wherein the light source further comprises an optical distribution network configured for distributing a light signal to the plurality of light emitters.7. The lens-free device according to claim 6 , wherein the optical distribution network is designed such that a phase difference between adjacent light emitters is an integer multiple of 2π.8. The lens-free device according to claim 1 , wherein the lens-free device is a silicon ...

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10-01-2019 дата публикации

Method and system for facilitating provisioning of holographic content

Номер: US20190011698A1
Автор: Pierce Elliott James
Принадлежит: Individual

Disclosed is a wearable display device configured to facilitate provisioning of holographic content in cooperation with at least one computing device. The wearable display device may include at least one sensor configured to detect sensor data corresponding to one or more of a location and an orientation of the wearable display device. Further, the wearable display device may include a communication interface configured to transmit the sensor data to the at least one computing device. Further, the communication interface may be configured to receive holographic projection content from the at least one computing device. Further, the wearable display device may include a processor communicatively coupled to the communication interface. Further, the processor may be configured to process the holographic projection content. Further, the wearable display device may include a display device configured to generate a visual display of the holographic projection content.

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10-01-2019 дата публикации

CUSTOMIZABLE THREE-DIMENSIONAL INTERACTIVE VISUALIZATION AND MULTI-SENSORY SYSTEM AND METHOD

Номер: US20190011700A1
Автор: Reiner Bruce
Принадлежит:

The present invention relates to one or multiple customizable interactive three-dimensional (3D) visualization and multi-sensory technologies useful in a variety of applications, including medical applications and e-commerce. In addition to visualization (which is a common sensory output for all technologies used in the present invention), a number of additional sensory data can be derived including (but not limited to) taste, hearing, smell, vibration, and motion. From this multi-sensory data, in combination with 3D imagery, a myriad of applications can be derived for interactive analysis, including the creation, modification, testing, comparison, query, analysis, and refinement of imaging data, on an individual or collective basis. 1. A virtual imagery and multi-sensory system , comprising:a plurality of biological sensors and environmental sensors, which receive input from one or more users and an environment of said one or more users, respectively, which input is provided to a three-dimensional (3D) visualization module;a plurality of image-capturing devices which take and forward images to said 3D visualization module which creates 3D virtual imagery of said one or more users; anda projection system which projects said 3D virtual imagery of said one or more users integrated by said 3D visualization module with said input from said plurality of biological sensors and environmental sensors, such that said one or more users experience sensory interactions with said 3D virtual imagery using said plurality of biological and environmental sensors.2. The virtual imagery and multi-sensory system of claim 1 , wherein said plurality of image-capturing devices include at least one of cameras claim 1 , radiographic devices claim 1 , ultrasound claim 1 , or volumetric medical imaging.3. The virtual imagery and multi-sensory system of claim 1 , wherein said biological sensors include at least one of visual claim 1 , auditory claim 1 , taste claim 1 , tactile claim 1 , or ...

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10-01-2019 дата публикации

Holographic head-up display device

Номер: US20190011706A1
Принадлежит: Samsung Display Co Ltd

A holographic head-up display device includes: a light source portion that emits coherent light; an optical modulation portion that modulates the coherent light; a relay optical system that focuses the modulated light; a filter mirror that includes a reflection area disposed at a focal position of the relay optical system and reflecting light incident through the relay optical system and an absorption area disposed at the periphery of the reflection area and absorbing light incident through the relay optical system; and a transflective mirror that partially transmits and partially reflects light reflected by the filter mirror.

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14-01-2021 дата публикации

MOBILE HOLOGRAM APPARATUS

Номер: US20210011306A1

A hologram display system is disclosed. An example system includes a hologram apparatus including a sheet folded along preformed creases into a frustum structure configured to be actuated between a compressed state and an uncompressed state. The frustum structure has a base section and a top section connected by four side sections. The system also includes instructions stored in a memory of a consumer device, which when executed, cause a processor of the consumer device to display, on a screen of the consumer device, holographic interactive content that is related to the hologram apparatus, detect interaction with at least one of the holographic interactive content or the hologram apparatus after the hologram apparatus is placed on the screen of the consumer device, and change the display of at least a portion of the holographic interactive content based on the detected interaction. 1. A hologram display system comprising:a hologram apparatus including a sheet folded along preformed creases into a frustum structure configured to be actuated between a compressed state and an uncompressed state, the frustum structure having a base section and a top section connected by four side sections, the frustum structure, in the compressed state, having a height that is less than the height of the frustum structure in the uncompressed state; and display, on a screen of the consumer device, holographic interactive content that is related to the hologram apparatus,', 'detect interaction with at least one of the holographic interactive content or the hologram apparatus after the hologram apparatus is placed on the screen of the consumer device, and', 'change the display of at least a portion of the holographic interactive content based on the detected interaction., 'instructions stored in a memory of a consumer device, which when executed, cause a processor of the consumer device to2. The hologram display system of claim 1 , wherein the hologram apparatus further includes an ...

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09-01-2020 дата публикации

METROLOGY TARGET

Номер: US20200011650A1
Автор: Stiepan Hans-Michael
Принадлежит:

A metrology target having a periodic or quasi-periodic structure, which is characterized by a plurality of parameters. At least one of these parameters varies locally monotonically, wherein the maximum size of this variation over a distance of 5 μm is less than 10% of the size of the at least one parameter. In addition, the metrology target has at least one used structure and at least one auxiliary structure, wherein the auxiliary structure transitions progressively into the used structure with regard to the locally monotonically varying parameter. Also disclosed are an associated method and associated device for characterizing structured elements configured as wafers, masks or CGHs. 1. A metrology target , comprising 'wherein the structure is characterized by a plurality of parameters, wherein at least one of the parameters varies locally monotonically, and wherein a maximum size of the variation over a distance of 5 μm is less than 10% of a size of the at least one parameter; and', 'a periodic or quasi-periodic structure,'} 'wherein the auxiliary structure transitions progressively into the used structure with regard to the locally monotonically varying parameter.', 'at least one used structure and at least one auxiliary structure,'}2. The metrology target as claimed in claim 1 , wherein the maximum size of the variation over a distance of 40 μm is less than 10%.3. The metrology target as claimed in claim 1 , wherein the maximum size of the variation over the distance is less than 1%.4. The metrology target as claimed in claim 1 , wherein the locally monotonically varying parameter is a geometric parameter.5. The metrology target as claimed in claim 1 , wherein the structure is further characterized by at least one constant parameter.6. The metrology target as claimed in claim 1 , wherein at least one of the parameters characterizing the structure is selected from the group consisting of pitch claim 1 , sidewall angle and etching depth.7. The metrology target as ...

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14-01-2021 дата публикации

Quantum simulator and quantum simulation method

Номер: US20210011430A1

A quantum simulator includes a pseudo speckle pattern generator, a main vacuum chamber, an atomic gas supply unit, a light beam generator, a photodetector, and an atom number detector. The pseudo speckle pattern generator generates a pseudo speckle pattern in the inside of the main vacuum chamber by light allowed to enter the inside of the main vacuum chamber through the second window. The pseudo speckle pattern generator includes a controller, a light source, a beam expander, a spatial light modulator, and a lens. The controller sets a modulation distribution of the spatial light modulator based on a two-dimensional pseudo random number pattern.

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10-01-2019 дата публикации

DEVICE AND METHOD FOR THE INDUSTRIAL PRODUCTION OF VOLUME REFLECTION HOLOGRAMS WITH SUBSTRATE-GUIDED RECONSTRUCTION BEAMS

Номер: US20190011880A1
Принадлежит:

The invention relates to an apparatus () for producing volume reflection holograms with substrate-guided reconstruction beams, comprising: 114.-. (canceled)15. An Apparatus for producing volume reflection holograms with substrate-guided reconstruction beams , comprising:at least one transparent, planar carrier element comprising a first flat side and a further flat side,at least one master element arrangeable at the first flat side of the carrier element andat least one optical input coupling element configured to optically couple a light beam, whereinprovision is made of at least one coupling portion configured to mechanically establish an optical contact between the input coupling element and at least one holographic recording medium providable on the further flat side of the carrier element or configured to mechanically establish an optical contact between the further flat side of the carrier element and at least one holographic recording medium providable on a flat side of the optical input coupling element,wherein at least the coupling portion is formed from a material with a shear modulus of between 1000 Pa and 50 MPa.16. The apparatus according to claim 15 , whereinthe input coupling element and the coupling portion or the coupling portion and the carrier element are homogeneously formed from a material with a shear modulus of between 1000 Pa and 50 MPa, orthe input coupling element or the carrier element, as a coupling portion, has a coating formed from a material with a shear modulus of between 1000 Pa and 50 MPa, orthe input coupling element and the coupling portion or the carrier element and the coupling portion are formed as separate elements, wherein the coupling portion, in particular, is formed as a transportable film from a material with a shear modulus of between 1000 Pa and 50 MPa.17. The apparatus according to claim 15 , whereinprovision is made of at least one handling element, at least mechanically connectable to the input coupling element, ...

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10-01-2019 дата публикации

HOLOGRAM DISPLAY APPARATUS AND HOLOGRAM DISPLAY METHOD

Номер: US20190011883A1
Автор: SHI Bingchuan
Принадлежит:

A hologram display apparatus and a hologram display method are provided. The hologram display apparatus includes a controller and a display device. The controller is configured to obtain plural grayscale values Gof an image of a to-be-displayed object, generate plural display sub-image codes Qaccording to the plurality of grayscale values Gand transmit the plurality of display sub-image codes Qto the display device, where i=1, 2, . . . , m, j=1, 2, . . . N, each of m and N is a positive integer. The display device is configured to generate and display plural sub-holograms according to the plurality of display sub-image codes, a quantity of the plurality of sub-holograms being equal to that of the plurality of display sub-image codes, such that the plurality of sub-holograms are superimposed to generate a hologram of the image of the to-be-displayed object in human eyes. 1. A hologram display apparatus , comprising a controller and a display device , wherein{'sub': i', 'j', 'i', 'j, 'the controller is configured to obtain a plurality of grayscale values Gof an image of a to-be-displayed object, generate a plurality of display sub-image codes Qaccording to the plurality of grayscale values G, and transmit the plurality of display sub-image codes Qto the display device, where i=1, 2, . . . , m, j=1, 2, . . . , N, each of m and N is a positive integer; and'}the display device is configured to generate and display a plurality of sub-holograms according to the plurality of display sub-image codes, a quantity of the plurality of sub-holograms being equal to that of the plurality of display sub-image codes, such that the plurality of sub-holograms are superimposed to generate a hologram of the image of the to-be-displayed object in human eyes.2. The hologram display apparatus according to claim 1 , wherein the controller is further configured to determine a maximal value N of a quantity of digits according to a predetermined numeral system of base x and the plurality of ...

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10-01-2019 дата публикации

Holographic Display Device And Method For Controlling The Same

Номер: US20190011884A1
Автор: Yuxin Zhang
Принадлежит: BOE Technology Group Co Ltd

A holographic display device and a method for controlling the same are disclosed. The holographic display device includes a light source, a spatial light modulator, an adjustable light directing device and a direction controller. The modulator is arranged at a light exit side of the light source and modulates a reading light and to emit an output light; the controller for setting an optical path of the output light depending on an observation position and outputting a control signal to the light directing device depending on the optical path is connected to the light directing device, the optical path being matched with the observation position; the light directing device is arranged on an light exit side of the modulator and adjusts a direction of the output light of the modulator in response to the control signal to direct the output light to the observation position along the optical path.

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10-01-2019 дата публикации

APPARATUS AND METHOD FOR GENERATING AN OPTICAL PATTERN FROM IMAGE POINTS IN AN IMAGE PLANE

Номер: US20190011885A1
Автор: DÜRR Peter, MAI Alexander
Принадлежит:

Apparatus for generating an optical pattern from image points in an image plane, including: a control unit; a micro-mirror array; an illumination unit controllable by the control unit; a focusing unit; the control unit being configured to control one or several micro-mirror groups formed of several micro-mirrors of the multitude of micro-mirrors such that the centroid beams reflected at the micro-mirrors of one of the micro-mirror groups meet in the image plane, and such that optical path lengths of the centroid beams reflected at the micro-mirrors of the respective micro-mirror group are equal from the illumination unit up to the image plane or differ by an integer multiple of a wavelength of the light beams in order to generate an image point of the image points in such a way. 1. An apparatus for generating an optical pattern from image points in an image plane , comprising:a control unit for controlling the generation of the optical pattern;a micro-mirror array for reflecting light beams that are incident on the micro-mirror array in a planar manner, wherein the micro-mirror array comprises a multitude to micro-mirrors, each being tiltable by the control unit about at least one axis so that a direction of a centroid beam of the light beams reflected at the respective micro-mirror is adjustable;an illumination unit controllable by the control unit for generating the light beams, configured such that the light beams are at least partially spatially coherent;a focusing unit for focusing onto the image plane the light beams reflected at the multitude of micro-mirrors of the micro-mirror array;the control unit being configured to control one or several micro-mirror groups formed of several micro-mirrors of the multitude of micro-mirrors such that the centroid beams reflected at the micro-mirrors of one of the micro-mirror groups meet in the image plane, and such that optical path lengths of the centroid beams reflected at the micro-mirrors of the respective micro- ...

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09-01-2020 дата публикации

HOLOGRAPHIC DISPLAY DEVICE HAVING REDUCED CHROMATIC ABERRATION

Номер: US20200012092A1
Принадлежит: SAMSUNG ELECTRONICS CO., LTD.

A holographic display device includes a light source configured to emit light, the light including first light of a first wavelength, second light of a second wavelength, and third light of a third wavelength; a spatial light modulator configured to form a holographic pattern to modulate the light emitted from the light source and to produce a holographic image; and a focusing optical system configured to focus the holographic image. The focusing optical system includes a fixed-focus optical system having a fixed focal length, and a variable focus optical system having a focal length that is changed by electrical control. The fixed-focus optical system is configured to focus the first light of the first wavelength, the second light of the second wavelength, and the third light of the third wavelength on different positions, respectively, on an optical axis to cancel a chromatic aberration by the variable focus optical system. 1. A holographic display device comprising:a light source configured to emit light, the light comprising first light of a first wavelength, second light of a second wavelength, and third light of a third wavelength;a spatial light modulator configured to form a holographic pattern to modulate the light emitted from the light source and to produce a holographic image; anda focusing optical system configured to focus the holographic image, a fixed-focus optical system having a fixed focal length; and', 'a variable focus optical system having a focal length that is changed by electrical control,, 'wherein the focusing optical system compriseswherein the fixed-focus optical system is configured to focus the first light of the first wavelength, the second light of the second wavelength, and the third light of the third wavelength on different positions, respectively, on an optical axis to cancel chromatic aberration by the variable focus optical system.2. The holographic display device of claim 1 , wherein each of the fixed-focus optical system and ...

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09-01-2020 дата публикации

Device for generating at least one hologram

Номер: US20200012233A1
Автор: Geles Özgür
Принадлежит:

The present invention relates to a method for generating at least one hologram, in particular for hologram-like presentation of game participants, comprising at least one hologram projection device for generating at least one hologram, as well as at least one storage medium on which at least one previously played football game and/or another playing field game is at least partially stored, and also at least one playback element which is in data communication with the storage medium and which supplies the hologram projection device with data to be projected. In this case the data comprise at least one data packet containing data of the previously played football game and/or the other playing field game, and these data comprising data of a location and/or a time and/or a physical condition of at least one game participant as a function of a playing time during a game are formed. Thus, these data can be reproduced by the hologram projection device, in particular in real time, in order to reproduce the football game and/or the playing field game by means of the hologram. 1100114. A method () for generating at least one hologram () , in particular for hologram-like presentation of game participants () , comprising{'b': 2', '1, 'at least one hologram projection device () for generating at least one hologram (),'}at least one storage medium on which at least one previously played football game and/or another playing field game is at least partially stored,{'b': '2', 'at least one playback element which is in data communication with the storage medium and which supplies the hologram projection device () with data to be projected,'}characterised in that{'b': 14', '2', '1, 'the data comprise at least one data packet containing data of the previously played football game and/or the other playing field game, and this data comprising data of a location and/or a time and/or a physical condition of at least one game participant () as a function of a playing time are formed during ...

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09-01-2020 дата публикации

METHOD FOR GENERATING A HOLOGRAPHIC IMAGE, PROCESSOR, HOLOGRAPHIC IMAGE DISPLAY DEVICE, AND APPARATUS

Номер: US20200012234A1
Автор: Li Ke
Принадлежит:

A method for generating a holographic image, a signal processor, a holographic image display device, a wearable apparatus, and an onboard head-up display apparatus. The method comprises: performing holographic transformation on the basis of a target amplitude phase distribution of a target image to obtain a holographic phase image; performing phase quantization of the holographic phase image to obtain a quantized holographic image; performing inverse holographic transformation of the quantized holographic image to obtain a reconstructed image; if the reconstructed image satisfies a preset condition, determining that the quantized holographic image is a target holographic image; if not, constraining the amplitude phase of the reconstructed image and, on the basis of the amplitude phase constrained image, continuing iteration. The present method can rapidly and effectively implement monochrome or multi-colour high contrast ratio, low noise real-time holographic image generation and display, and the imaging distance can be freely adjusted. 1. A method for generating a holographic image comprises:performing holographic transformation on the basis of a target amplitude phase distribution of a target image to obtain a holographic phase image corresponding to the target image;performing phase quantization of the holographic phase image to obtain a quantized holographic image;performing inverse holographic transformation of the quantized holographic image to obtain a reconstructed image corresponding to the target image;if the reconstructed image satisfies a preset condition, then determining that the quantized holographic image is a target holographic image;if not, constraining the amplitude phase of the reconstructed image corresponding to the target image and, on the basis of the amplitude phase constrained image, continuing iteration.2. The method according to claim 1 , wherein the holographic transformation is selected from the group consisting of Fourier transform ...

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