For Synthetically Generating A Hologram Patents (Class 359/9)
  • Patent number: 11175626
    Abstract: Provided are on-axis and off-axis digital hologram generating device and method. The on-axis and off-axis digital hologram generating device includes an object phase generator configured to access a phase file of an object stored in a storage device and generate object phase information from the phase file of the object; a digital object light generator configured to generate digital object light information based on a light property of object light input by a user and the object phase information generated by the object phase generator; a digital reference light generator configured to generate digital reference light information based on a light property of reference light input by the user; and a digital hologram generator configured to generate a digital hologram based on hologram property information input by the user, the digital object light information generated by the digital object light generator, and the digital reference light information generated by the digital reference light generator.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: November 16, 2021
    Assignee: NAEILHAE, CO. LTD.
    Inventors: Byung Mok Kim, Mal Eum Sung, Seong Jin Park, Sang Jin Lee
  • Patent number: 11175627
    Abstract: A system for lens-free imaging includes a processor in communication with a lens-free image sensor. The processor is programmed to operate the image sensor to obtain a hologram ??. The processor is further programmed to generate, from the hologram, a reconstructed image X and phase W at a focal depth z using an assumption of sparsity.
    Type: Grant
    Filed: November 3, 2017
    Date of Patent: November 16, 2021
    Assignee: miDiagnostics NV
    Inventors: Benjamin D. Haeffele, Rene Vidal
  • Patent number: 11156961
    Abstract: A method and apparatus for processing hologram image data capable of optimizing image quality of a hologram image are provided. The image processing method includes receiving input image data, reading a header included at a predetermined location in the input image data, and generating hologram data configured to display a hologram image by performing a Fourier calculation and pixel encoding on the input image data based on at least one parameter recorded in the header, wherein the at least one parameter recorded in the header includes at least one of depth information, scale information, and gamma information.
    Type: Grant
    Filed: March 22, 2019
    Date of Patent: October 26, 2021
    Assignees: SAMSUNG ELECTRONICS CO., LTD., University of Seoul Industry Cooperation Foundation
    Inventors: Hojung Kim, Kichul Kim, Yongkyu Kim, Hongseok Lee
  • Patent number: 11143868
    Abstract: A three-dimensional (3D) image display apparatus is provided. The apparatus includes a plurality of light sources; a spatial light modulator configured to modulate light from the plurality of light sources according to 3D image information; and a focusing optical system configured to focus an image formed by the spatial light modulator onto a focal plane. The plurality of light sources may be arranged such that multiple focal points, respectively corresponding to the plurality of light sources, are formed on the focal plane near a pupil of a user.
    Type: Grant
    Filed: September 17, 2018
    Date of Patent: October 12, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Wontaek Seo, Geeyoung Sung, Sunil Kim, Bongsu Shin, Changkun Lee, Hongseok Lee
  • Patent number: 11137719
    Abstract: A method for digital holography includes modeling a hologram using a forward propagation model that models propagation of a light field from a hologram plane to an image plane. The method further includes computing the hologram as a solution to an optimization problem that is based on the model. The method further includes configuring at least one spatial light modulator using the hologram. The method further includes illuminating the spatial light modulator using a light source to create a target image.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: October 5, 2021
    Assignee: UNIVERSITY OF NORTH CAROLINA AT CHAPEL HILL
    Inventors: Praneeth Kumar Chakravarthula, Felix Heide
  • Patent number: 11119310
    Abstract: A laser apparatus comprising an aperture module array including two or more aperture modules, each aperture module of the array being optically couple-able to a source of coherent electromagnetic radiation and configured to emit a beam of radiation received from the source. The apparatus emits a composite beam comprising beams emitted by the respective aperture modules and modulates at least one of the beams in power and phase relative to at least one other of the beams such that a desired non-uniform composite beam profile is provided.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: September 14, 2021
    Assignee: Lockheed Martin Corporation
    Inventors: Dennis John Adams, Thomas Gustav Alley, Emanuel Solomon Stockman
  • Patent number: 11099412
    Abstract: An optical device includes a spatial light modulator and an optical waveguide with a plurality of extraction features. The plurality of extraction features is positioned relative to the optical waveguide so that a respective extraction feature receives light, having propagated within the optical waveguide, in a first direction and directs a first portion of the light in a second direction distinct from the first direction to exit the optical waveguide and illuminate at least a portion of the spatial light modulator. The plurality of extraction features is also positioned relative to the optical waveguide so that a respective extraction feature directs a second portion, distinct from the first portion, of the light to undergo total internal reflection, thereby continuing to propagate within the optical waveguide.
    Type: Grant
    Filed: April 29, 2020
    Date of Patent: August 24, 2021
    Assignee: Facebook Technologies, LLC
    Inventors: Ying Geng, Jacques Gollier, Babak Amirsolaimani, Fenglin Peng
  • Patent number: 11092930
    Abstract: Holographic and diffractive optical encoding techniques for forming reflection or transmission holograms. The encoding device includes a substrate having an interference pattern that can propagate light along a light propagation path from one side of the substrate to another side of the substrate. Furthermore, an optical element may be used to propagate light according to a four-dimensional light field coordinate system.
    Type: Grant
    Filed: January 14, 2019
    Date of Patent: August 17, 2021
    Assignee: Light Field Lab, Inc.
    Inventors: Jonathan Sean Karafin, Brendan Elwood Bevensee
  • Patent number: 11095856
    Abstract: Systems and methods are described that enable a 3D telepresence. In an exemplary method, a 3D image stream is generated of a first participant in a virtual meeting. A virtual meeting room is generated. The virtual meeting room includes a virtual window, and the 3D image stream is reconstructed in the virtual window. The first participant thus appears as a 3D presence within the virtual window. The virtual meeting room may also include virtual windows providing 3D views of other participants in the virtual meeting and may further include avatars of other meeting participants and/or of the first meeting participant.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: August 17, 2021
    Assignee: PCMS Holdings, Inc.
    Inventor: Seppo T. Valli
  • Patent number: 11079720
    Abstract: A holographic display system includes a light source that emits coherent light; a lateral displacement beam splitter that optically receives the coherent light and generates first reference light and second reference light; a first spatial light modulator (SLM) and a second SLM that optically receive the first reference light and the second reference light respectively, and construct first phase-only function (POF) light and second POF light respectively; a first beam splitter and a second beam splitter that optically receive the first POF light and the second POF light respectively, and generate first split light and second split light respectively; and a plurality of polarizers disposed between the first SLM and the first beam splitter, and between the second SLM and the second beam splitter, respectively.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: August 3, 2021
    Assignees: National Taiwan University, Himax Technologies Limited
    Inventors: Chien-Yu Chen, Chih-Hao Chuang, Hoang-Yan Lin
  • Patent number: 11077618
    Abstract: Methods and apparatus for forming a three-dimensional article in which a powdered medium is distributed in a powder bed, heated to a temperature below its melting point, and fused by means of a laser beam projected in the form of an image of a cross section of the three-dimensional article. The image of the cross-sectional layer is created by spatial light modulation of the laser beam using an LCoS display. During the fabrication process, characteristics of the image of the cross-sectional layer are controlled through monitoring of the projection of a holographic representation of the image using one or more imaging devices.
    Type: Grant
    Filed: March 7, 2018
    Date of Patent: August 3, 2021
    Assignee: NXT FACTORY INC.
    Inventors: Tomasz P. Cieszyński, Jakub Graczyk, Avi N. Reichental
  • Patent number: 11062101
    Abstract: A method to incorporate multiple independent optical correlators into one system. By “independent optical correlator,” we mean an optical correlator comprising of an input SLM, filter SLM, and camera, combined with appropriate coherent illumination and Fourier transforming lenses. By “one system” we mean a single optical system which utilises the elements of each of the independent correlators multiple times.
    Type: Grant
    Filed: April 16, 2018
    Date of Patent: July 13, 2021
    Assignee: Optalysys Limited
    Inventors: Nicholas James New, Robert James Todd
  • Patent number: 11054701
    Abstract: An illuminating apparatus for a display screen with a transmissive image generator, having a free-viewing mode and a restricted-viewing mode, comprising a background illuminator radiating light in a wide angular range, a plate-shaped light guide in front of the background illuminator with outcoupling elements, and light sources. Outcoupling element dimensions are smaller than the width and height of subpixels of the image generator, parts of the surface of two outcoupling elements are below each subpixel and the filling factor of the outcoupling elements is maximally 50% of the large surface of the light guide, and at least 80% of the light coupled out is radiated within an angular range of 60°, and more than 50% of the light is radiated away from or toward the background illuminator, and in the restricted mode, the background illuminator and light sources are off, and in the free-viewing mode, the background illuminator is on.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: July 6, 2021
    Assignee: siOPTICA GmbH
    Inventors: André Heber, Markus Klippstein, Ambrose Peter Nari
  • Patent number: 11054643
    Abstract: There is provided a method of projection using an optical element (502,602) having spatially variant optical power. The method comprises combining Fourier domain data representative of a 2D image with Fourier domain data having a first lensing effect (604a) to produce first holographic data. Light is spatially modulated (504,603a) with the first holographic data to form a first spatially modulated light beam. The first spatially modulated light beam is redirected using the optical element (502,602) by illuminating a first region (607) of the optical element (602) with the first spatially modulated beam. The first lensing effect (604a) compensates for the optical power of the optical element in the first region (607). Advantageous embodiments relate to a head-up display for a vehicle using the vehicle windscreen (502,602) as an optical element to redirect light to the viewer (505,609).
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: July 6, 2021
    Assignee: Envisics Ltd
    Inventors: Jamieson Christmas, Dackson Masiyano
  • Patent number: 11049446
    Abstract: Aspects of the technology provide a graphical display on a client device such as a smartwatch or other electronic display device. Content rendered by a non-emissive display element is augmented by an enhancement display element, for instance to change a color or illumination intensity of the content. The enhancement display element may include multiple illumination sources and light pipes that guide light from the light sources to specific regions along the display. Alternatively, the enhancement display element may be a transparent OLED or similar component, for instance to provide per-pixel illumination, highlighting and/or color enhancement to selected content items. In yet another configuration, the enhancement display element has a mask layer and a light element. The mask layer controls the amount of light reaching the non-emissive display element or viewable by a user. Each of these architectures provides rich enhancement to the content items generated by the non-emissive display element.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: June 29, 2021
    Assignee: Google LLC
    Inventor: Alex Olwal
  • Patent number: 11032509
    Abstract: A display apparatus includes a display panel including a display area configured to display an image, and a non-display area, at least one first sound generator in the display area, and at least one second sound generator in the non-display area, wherein each of the at least one first sound generator and the at least one second sound generator is configured to vibrate the display panel to generate sound toward a front of the display panel.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: June 8, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Sungtae Lee, SeYoung Kim, KwanHo Park, YeongRak Choi, Kwangho Kim, Sungsu Ham
  • Patent number: 11016441
    Abstract: A two-step optimization process is utilized to define an optimal phase profile for a LCoS spatial light modulator. The two-step optimization process first utilizes a nonlinear constrained optimization (NCO) program to determine the specific parameters required to obtain an optimal phase profile (hologram), where the “optimal phase profile” is typically defined as that profile which achieves maximum diffraction efficiency for optical switching. Following this first step, phase scaling (and perhaps an adjustment in the number of pixels per period) is employed to slightly modify the values of the optimal phase profile to effectively suppress crosstalk peaks. If any orders still exhibit an unacceptable level of crosstalk, these orders are then subtracted from the phase profile to create the final design.
    Type: Grant
    Filed: February 18, 2019
    Date of Patent: May 25, 2021
    Assignee: II-VI Delaware, Inc.
    Inventors: Kun Gao, Jack R. Kelly, Helen Chen, Guomin Jiang, Xinran Wang, Lixin (Lawrence) Wang, Qingyu (Tom) Li, Haiji J. Yuan
  • Patent number: 11003137
    Abstract: 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.
    Type: Grant
    Filed: October 7, 2019
    Date of Patent: May 11, 2021
    Assignee: Envisics Ltd
    Inventors: Jamieson Christmas, Dackson Masiyano, Mikael Collin
  • Patent number: 11003136
    Abstract: In the present invention, by providing an apparatus for generating a hologram based on human visual system modeling, including a lens configured to focus light emitted from a three-dimensional (3D) object, a sensor configured to detect the light, an object information obtaining unit configured to obtain object information of the 3D object based on information of the lens and a confusion circle size threshold value corresponding to information of the sensor, and a hologram image generating unit configured to generate a hologram image for the 3D object based on the object information, it is possible to provide a method of generating a hologram based on a human visual system capable of generating image information of a three-dimensional object faster and capable of generating a higher-quality hologram image.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: May 11, 2021
    Assignee: Electronics and Telecommunications Research Institute
    Inventor: Tae One Kim
  • Patent number: 10990063
    Abstract: The present description may provide a method of generating a hologram measurement pattern for measuring image quality of holographic display, including: generating a test pattern and a common pattern including at least one grayscale bar; generating measurement pattern data by combining the common pattern with a frame of the test pattern; and generating the hologram measurement pattern by inserting a random phase into the measurement pattern data and an apparatus applied thereto, thereby more accurately measuring the quality of the 3D holographic image reproduced by the holographic display.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: April 27, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventor: Jeho Nam
  • Patent number: 10969744
    Abstract: A holographic display apparatus includes: a light source configured to emit light; a spatial light modulator configured to sequentially generate hologram patterns for modulating the light and to sequentially reproduce frames of hologram images based on the hologram patterns; and a controller configured to provide hologram data signals to the spatial light modulator, the hologram data signals being used to sequentially generate the hologram patterns. The controller is configured to further provide, to the spatial light modulator, diffraction pattern data signals for forming periodic diffraction patterns for adjusting locations of the hologram images to be reproduced on a hologram image plane, the diffraction pattern data signals being configured to move the periodic diffraction patterns on the spatial light modulator along a predetermined direction for each of the frames.
    Type: Grant
    Filed: August 28, 2018
    Date of Patent: April 6, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Wontaek Seo, Hongseok Lee, Juwon Seo, Hoon Song, Jungkwuen An
  • Patent number: 10948875
    Abstract: Provided is a method for converting a hologram resolution of an apparatus for converting a hologram resolution. The apparatus for converting a hologram resolution includes receiving a hologram data and determining a direction and a height of an envelope for the hologram data based on first information associated with the hologram data. The apparatus for converting a hologram resolution includes converting the resolution of the hologram data from a first resolution into a second resolution based on the envelop having the determined direction and height.
    Type: Grant
    Filed: January 11, 2018
    Date of Patent: March 16, 2021
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventor: Kwan-Jung Oh
  • Patent number: 10948876
    Abstract: According to one embodiment, there is provided an optical film with a recording surface, the recording surface including: a computation element section in which a phase component of light from each reconstruction point of a reconstructed image is computed, the computation element section corresponding to each reconstruction point one by one; a phase angle recording area in which a phase angle computed based on the phase component is recorded; and a phase angle non-recording area in which the phase angle is not recorded, the phase angle computed based on the phase component being recorded in an overlapping area where the computation element section and the phase angle recording area overlap each other.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: March 16, 2021
    Assignee: TOPPAN PRINTING CO., LTD.
    Inventor: Akihito Kagotani
  • Patent number: 10928776
    Abstract: The disclosure provides a display system and a method for displaying a virtual image to a viewer An optical system of the disclosure includes a spatial light modulator, a light source, a Fourier transform lens, a viewing system and a processing system. The spatial light modulator is arranged to display holographic data in the Fourier domain, illuminated by the light source. The Fourier transform lens is arranged to produce a 2D holographic reconstruction in the spatial domain corresponding to the holographic data. The viewing system is arranged to produce a virtual image of the 2D holographic reconstruction. The processing system is arranged to combine the Fourier domain data representative of a 2D image with Fourier domain data representative of a phase only lens to produce first holographic data, and provide the first holographic data to the optical system to produce a virtual image.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: February 23, 2021
    Assignee: Two Trees Photonics Limited
    Inventors: Jamieson Christmas, Dackson Masiyano
  • Patent number: 10928775
    Abstract: A method of creating a 3D holographic display in a device having a camera, holographic projectors and display surface, the method including: tracking by the camera an interactive device over the display; determining by the camera a distance from the interactive device to the display; responsive to an action by the interactive device, visually displaying by the holographic projectors a unit holographic object proximate to the interactive device; responsive to one or more additional actions by the interactive device, visually displaying by the holographic projectors additional unit holographic objects proximate to the unit holographic object so as to be visually displaying a plurality of unit holographic objects; accumulating by the holographic projectors the plurality of unit holographic objects proximate to the display surface; and determining an amount of accumulated unit holographic objects visually displayed by the holographic projectors until a resultant shape of holographic objects is formed.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: February 23, 2021
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Kausik Chatterjee, Sarbajit K. Rakshit
  • Patent number: 10911643
    Abstract: An image sensor has a plurality of pixels arranged in an array on an imaging surface and converts a captured optical image into an image signal. A modulator is provided on a light receiving surface of the image sensor and modulates the light intensity using a grating pattern. An image processor performs image processing of the image signal output from the image sensor. The modulator has a grating substrate and a first grating pattern is formed on a first side of the grating substrate adjacent to a light receiving side of the image sensor. The grating pattern is composed of a plurality of concentric circle patterns. Each concentric circle pattern has concentric circles having a pitch which becomes smaller in inverse proportion to the distance from the center thereof. The plurality of concentric circle patterns do not overlap with each other in the grating pattern.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: February 2, 2021
    Assignee: HITACHI, LTD.
    Inventor: Takeshi Shimano
  • Patent number: 10884250
    Abstract: An apparatus and a method for laser beam shaping and scanning. The apparatus includes a digital micromirror device (DMD) including a plurality of micromirrors, configured to receive a first laser beam, adjust an axial position of a focal point of the first laser beam along a moving direction of the first laser beam by controlling a focal length of wavefront of a binary hologram applied to the DMD, and adjust a lateral position of the focal point on a plane perpendicular to the moving direction by controlling a tilted angle of a fringe pattern and a period of fringes of the binary hologram applied to the DMD, wherein the DMD simultaneously functions as programmable binary mask and a blazed grating.
    Type: Grant
    Filed: July 29, 2019
    Date of Patent: January 5, 2021
    Assignee: The Chinese University of Hong Kong
    Inventors: Shih-Chi Chen, Qiang Geng, Dien Wang, Pengfei Chen, Dapeng Zhang
  • Patent number: 10884377
    Abstract: A method of computing a hologram for reconstructing an object using a display device. The display device enables a holographic reconstruction of the object. The display device includes a light source and an optical system to illuminate a hologram-bearing medium being encodable with the hologram. The method includes the steps of: (a) computing the hologram by determining the wavefronts at an approximate observer eye position that would be generated by a real version of the object to be reconstructed; and (b) encoding the computed hologram in the hologram-bearing medium.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: January 5, 2021
    Assignee: SEEREAL TECHNOLOGIES GMBH
    Inventor: Armin Schwerdtner
  • Patent number: 10871745
    Abstract: A method for lens-free imaging of a sample or objects within the sample uses multi-height iterative phase retrieval and rotational field transformations to perform wide FOV imaging of pathology samples with clinically comparable image quality to a benchtop lens-based microscope. The solution of the transport-of-intensity (TIE) equation is used as an initial guess in the phase recovery process to speed the image recovery process. The holographically reconstructed image can be digitally focused at any depth within the object FOV (after image capture) without the need for any focus adjustment, and is also digitally corrected for artifacts arising from uncontrolled tilting and height variations between the sample and sensor planes. In an alternative embodiment, a synthetic aperture approach is used with multi-angle iterative phase retrieval to perform wide FOV imaging of pathology samples and increase the effective numerical aperture of the image.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: December 22, 2020
    Assignee: THE REGENTS OF THE UNIVERSITY OF CALIFORNIA
    Inventors: Aydogan Ozcan, Alon Greenbaum, Yibo Zhang, Alborz Feizi, Wei Luo
  • Patent number: 10871683
    Abstract: A stereoscopic display device may include a light control panel on a display panel, so that light emitted from the display panel may emit in a direction different from adjacent frame and the visibility of the stereoscopic image which is provided to user may be increased without the deterioration of the resolution.
    Type: Grant
    Filed: December 3, 2018
    Date of Patent: December 22, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sung-Min Jung, Hoon Kang
  • Patent number: 10859845
    Abstract: A projection device is provided with at least: a laser light source which emits laser light; a conversion unit which converts the laser light into parallel light; a phase-modulation-type spatial modulation element which phase-modulates the parallel light on the basis of a supplied projection image and delivers phase-modulated light; and a control unit. The control unit includes: a projection image storage unit in which at least one projection image group is stored; a processing unit which, with respect to one projection image acquired from the projection image storage unit in synchronism with an update period, generates a combination of a plurality of diffraction patterns in the update period; and a projection image generation unit which supplies the combination of a plurality of diffraction patterns to the phase-modulation-type spatial modulation element as the supplied projection image.
    Type: Grant
    Filed: February 16, 2018
    Date of Patent: December 8, 2020
    Assignees: NEC CORPORATION, NEC Platforms, Ltd.
    Inventors: Satoshi Kyosuna, Satoshi Komatsu, Hirofumi Tsuda
  • Patent number: 10859821
    Abstract: A display system includes a data provider, a spatial light modulator and a second cylindrical lens. The data provider is arranged to provide holographic data comprising first data corresponding to a first cylindrical lens having optical power in a first direction. The spatial light modulator is arranged to receive the holographic data, wherein the spatial light modulator is arranged to spatially-modulate received light in accordance with the holographic data. The second cylindrical lens is arranged to receive spatially-modulated light from the spatial light modulator and perform a one-dimensional Fourier transform of the received light in a second direction orthogonal to the first direction.
    Type: Grant
    Filed: March 3, 2017
    Date of Patent: December 8, 2020
    Assignee: Dualitas Ltd.
    Inventors: Jamieson Christmas, Neil Collings
  • Patent number: 10855974
    Abstract: A display system may comprise a radially symmetric mirror, a display screen, and a radial array of lenticular lenses. The mirror may be a frustum of a cone. Light from the screen may pass through the radial array and then reflect from the mirror, to create a 360-degree automultiscopic display. The automultiscopic display may display multiple rendered views of a 3D scene, each of which shows the scene from a different virtual camera angle. Which rendered view is visible may depend on the angular position of a user. Each lenticular lens may be wedge-shaped and may have a constant focal length and a constant height-width ratio. In some cases, slices from some, but not all, of the rendered views are displayed under any single lenticular lens at a given time. The lenticular array may be replaced by a holographic optical element, or by radial array of parallax barriers.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: December 1, 2020
    Assignee: Massachusetts Institute of Technology
    Inventors: Emily Salvador, Emily Van Belleghem, Daniel Novy, Victor Michael Bove, Jr.
  • Patent number: 10838363
    Abstract: A method that includes: recognizing by an object recognition device a physical object; comparing by the object recognition device the physical object with a fully completed object; identifying by the object recognition device a spatial position, an orientation and physical dimensions of the partially-completed physical object; creating by a three-dimensional (3D) modeling program a 3D model of the partially-completed physical object using the spatial position, the orientation and physical dimensions of the partially-completed physical object; inputting by the 3D modeling program to a holographic creation system a missing shape of the partially-completed physical object, the missing shape being a complementary portion of the partially-completed physical object; creating by the holographic creation system a 3D hologram of the complementary portion; displaying by a holographic projector the 3D hologram of the complementary portion adjacent to the partially-completed physical object.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: November 17, 2020
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Sarbajit K. Rakshit, Sathya Santhar
  • Patent number: 10824113
    Abstract: A method for processing a sequence of holographic images with a view to playing the images back on a holographic display device to at least one viewer. A subset of wavelet coefficients relevant for the reconstruction of a sub-hologram visible for the at least one viewer from at least one viewing point is selected from a decomposition of at least one holographic image on a wavelet basis and information representative of a location of the at least one viewer in a repository of the display device. In the method, decomposition of the at least one holographic image is carried out on a Shannon wavelet basis.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: November 3, 2020
    Assignee: ORANGE
    Inventors: Kartik Viswanathan, Patrick Gioia
  • Patent number: 10795314
    Abstract: Systems, methods, and devices are provided relating to far field hologram viewing devices. A method of designing and manufacturing a far field hologram is provided. Holographic light patterns with minimal spurious pixel errors in the hologram response may be produced without requiring a tight tolerance on the relative positions of the hologram and an observer's eye. Far field viewing devices, and methods for making the same, that employ multiple unit holograms each having differing noise characteristics that superpose in a way to reduce the effects of spurious pixel errors while maintaining good overall noise performance.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: October 6, 2020
    Assignee: Holospex, Inc.
    Inventor: Joseph van der Gracht
  • Patent number: 10788725
    Abstract: A phase modulation active device and a method of driving the phase modulation active device are provided. The phase modulation active device includes channels independently modulating a phase of incident light. The method includes selecting a first phase value and a second phase value to be used for the channels, setting a binary phase profile by allocating the selected first phase value or the selected second phase value to each of the channels quasi-periodically, in a sequence in which the channels are arranged, and driving the phase modulation active device, based on the set binary phase profile.
    Type: Grant
    Filed: September 11, 2017
    Date of Patent: September 29, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Duhyun Lee, Changgyun Shin, Jisoo Kyoung, Byounglyong Choi
  • Patent number: 10754296
    Abstract: The present disclosure provides a holographic display and a display method thereof, and a display device. A holographic display comprises: a light source support; a light emitting member including at least one light source and provided on the light source support; a first spatial light modulator and a second spatial light modulator respectively located at both sides of the light emitting member; a first semi-transmissive semi-reflective film located at a side of the first spatial light modulator which is adjacent to the light emitting member; and a second semi-transmissive semi-reflective film located at a side of the second spatial light modulator which is adjacent to the light emitting member. According to the technical solutions provided by the present disclosure, a light and thin holographic display can be provided, and during holographic displaying, a single-side display or a double-sides display can be achieved.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: August 25, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Yuxin Zhang
  • Patent number: 10678189
    Abstract: Methods and systems and components made according to the methods and systems, are disclosed relating to the generation of a holographic image, including a color-containing holographic image, generated exclusively optically addressing information to a projection system.
    Type: Grant
    Filed: January 8, 2019
    Date of Patent: June 9, 2020
    Assignee: The Boeing Company
    Inventors: Jeffrey H. Hunt, Robert J. Atmur
  • Patent number: 10642223
    Abstract: Embodiments of the present disclosure provide a holographic display device. The holographic display device includes a spatial light modulator and a light source unit. The light source unit is provided on the light entry side of the spatial light modulator and configured to providing read-out light to the spatial light modulator. The spatial light modulator includes at least one loading portion for receiving a write-in signal, which comprises a plurality of pixel units arranged in a matrix form, and the light exit surface of at least a part of which is a first cambered surface protruding in a direction away from the light source unit.
    Type: Grant
    Filed: February 27, 2018
    Date of Patent: May 5, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Hao Chen
  • Patent number: 10620511
    Abstract: A projection device is provided in order to improve contrast of a target image projected by using a phase modulation type spatial modulation element and also preventing unnecessary light from being projected. The projection device includes: a projection means that includes a light source, a spatial modulation element including a display part that displays a phase distribution of a target image and reflecting light from the light source, and an opening frame through which reflected light from the spatial modulation element passes; and a control means that causes the display part of the spatial modulation element to display a phase distribution generated by performing iterative Fourier transform processing by using an amplitude distribution set with a signal region in which a basic figure included in the target image is arranged and a sweep-out region for sweeping optical noise out of the signal region.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: April 14, 2020
    Assignee: NEC CORPORATION
    Inventor: Fujio Okumura
  • Patent number: 10620585
    Abstract: The embodiment of the present application discloses a method, device, system and storage medium for displaying a holographic portrait in real time, applicable to reducing latency and achieving real-time display. A method in the application embodiment comprises: acquiring portrait data of a figure through somatosensory equipment; acquiring portrait data within a preset range as effective portrait data; blurring and storing the effective portrait data; sending the blurred effective portrait data to holographic display equipment frame by frame based on a first-in first-out principle, so as to display the effective portrait data of the figure on holographic projection of the holographic display equipment in real time, achieve real-time display of the holographic portrait, have a lower latency and improve user experience.
    Type: Grant
    Filed: April 18, 2018
    Date of Patent: April 14, 2020
    Assignee: SHENZHEN STARFIELD INFORMATION TECHNOLOGIES CO., Ltd.
    Inventors: Yantao Yang, Ting Zhang, Junqing Fang, Ting Cao
  • Patent number: 10591871
    Abstract: Light reflected from an illuminated object is mixed with a reference beam and sensed at a sensor array of a digital hologram apparatus. Digital hologram data, determined from the sensed light, is dependent upon complex valued reflection coefficients of the object and upon phase perturbations in propagation paths between the object and the sensor array. Reflectance values, which may be dependent upon expected values of the absolute square of the reflection coefficients, and phase perturbations are determined for which a test function is at an extremum, where the test function contains a data fidelity term dependent upon the hologram data from a single hologram, a first regularization term dependent upon the phase perturbations and a second regularization term dependent upon the reflectance values. An image of the object may be formed from the reflectance values and a wavefront of the reflected light may be determined from the phase perturbations.
    Type: Grant
    Filed: September 9, 2019
    Date of Patent: March 17, 2020
    Assignee: THE GOVERNMENT OF THE UNITED STATES OF AMERICA AS REPRESENTED, BY THE SECRETARY OF THE AIR FORCE.
    Inventors: Casey J. Pellizzari, Mark F. Spencer, Charles A. Bouman, Jr.
  • Patent number: 10578787
    Abstract: A hologram generating apparatus is provided. The apparatus includes a hologram signal generating unit configured to, based on light projected on at least some points corresponding to an object, generate a hologram signal corresponding to the at least some points on at least one two-dimensional plane, a processor configured to calculate a sparsity corresponding to the two-dimensional plane based on the hologram signal, and to calculate a fringe pattern based on at least some of the hologram signal, and a pattern writing unit configured to record the fringe pattern on a computer-generated holography (CGH) plane, wherein the processor is further configured to repeatedly calculate a fringe pattern until a number of dominant signals of the calculated fringe pattern coincides with a predetermined threshold value determined based on the sparsity.
    Type: Grant
    Filed: June 21, 2017
    Date of Patent: March 3, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Jin-sung Lee, YongMan Ro, Hak Gu Kim, Jong-sul Min
  • Patent number: 10571862
    Abstract: A method of producing a Computer Generated Hologram (CGH) for producing a 3 dimensional (3D) holographic image, including receiving data describing a 3D scene, producing a first CGH for producing a 2D image of the 3D scene as viewed from a specific viewing direction, the 2D image perpendicular to the viewing direction, decomposing the 2D image to a plurality of slices at different depths along the viewing direction, adjusting the first CGH by making, for at least one of the plurality of slices, a correction to the CGH associated with a depth of the slice along the viewing direction, thereby producing a corrected CGH for producing a 3D holographic image of the 3D scene. Related apparatus and methods are also described.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: February 25, 2020
    Assignee: Real View Imaging Ltd.
    Inventors: Shlomo Alon-Braitbart, Carmel Rotschild, Shaul Alexander Gelman
  • Patent number: 10573080
    Abstract: An augmented reality (AR) system includes a head-mounted display (HMD) with a holographic display, a device for generating virtual reality (VR) light field data, a device for recording light field data of the environment, and a device for combining the light field data of the environment and the VR light field data to form augmented reality (AR) light field data and controlling the holographic display. They AR system further includes a device for correcting the AR light field data on the basis of ophthalmological data of a user. The complete computer-generated AR presentation makes possible a common and uniform adaptation and correction of the presentation in respect of vision defects of the user.
    Type: Grant
    Filed: April 2, 2018
    Date of Patent: February 25, 2020
    Assignee: Carl Zeiss Vision International GmbH
    Inventor: Jeremias Gromotka
  • Patent number: 10545337
    Abstract: A see-through holographic display apparatus includes a relay optical system expanding or reducing and transferring a hologram image generated by a spatial light modulator, a noise removal filter removing noise from diffraction light of the hologram image transferred through the relay optical system, and a light path converter changing at least one of a path of the diffraction light of the hologram image transferred from the relay optical system and a path of external light.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: January 28, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Geeyoung Sung, Yuntae Kim, Jungkwuen An, Hongseok Lee
  • Patent number: 10474102
    Abstract: A method for digitally generating a hologram plane from a three-dimensional scene, cut into a plurality of planes parallel to the hologram plane. The method includes for a current plane: counting a number of points of the non-zero amplitude scene; choosing a first or second technique for propagating a light wave emitted by the current plane as a function of a number of points of non-zero amplitude included in the current plane and with a preset threshold value, the first, point-based technique calculating the propagation of a sum of light waves emitted by point sources constituted by the points of the scene portion of a non-zero amplitude of the current plane on a following plane, and the second, field-based technique, globally calculating a light wave emitted by the scene portion situated in the current plane on a given plane; and processing the current plane according to the chosen propagation technique.
    Type: Grant
    Filed: May 10, 2016
    Date of Patent: November 12, 2019
    Assignee: B<>COM
    Inventors: Antonin Gilles, Patrick Gioia, Remi Cozot, Luce Morin
  • Patent number: 10467721
    Abstract: Methods of manufacturing security documents and security devices, and corresponding products, provide a lenticular device effect in a first registration zone. Viewing its appearance from two different angles in this way, the relative positioning of the focussing element array and the image array can be judged to a high degree of accuracy. If the two arrays do not have the desired relative position, this will be clearly apparent since the different first and second images will not be captured at the first and second test viewing angles.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: November 5, 2019
    Assignee: DE LA RUE INTERNATIONAL LIMITED
    Inventors: Brian William Holmes, Robert Whiteman, Lawrence George Commander
  • Patent number: 10429648
    Abstract: An augmented reality head worn device having a a curve transparent mirror, a scanning light source defining a field of view, a holographic optical element adapted to provide pupil expansion to create an eye-box, and at least one projection system for providing high acuity at or near a center of the field of view.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: October 1, 2019
    Inventor: Lawrence Sverdrup