For Synthetically Generating A Hologram Patents (Class 359/9)
  • Patent number: 10401794
    Abstract: A method of computing a hologram by determining the wavefronts at the approximate observer eye position that would be generated by a real version of an object to be reconstructed. In normal computer generated holograms, one determines the wavefronts needed to reconstruct an object; this is not done directly in the present invention. Instead, one determines the wavefronts at an observer window that would be generated by a real object located at the same position of the reconstructed object. One can then back-transforms these wavefronts to the hologram to determine how the hologram needs to be encoded to generate these wavefronts. A suitably encoded hologram can then generate a reconstruction of the three-dimensional scene that can be observed by placing one's eyes at the plane of the observer window and looking through the observer window.
    Type: Grant
    Filed: August 17, 2017
    Date of Patent: September 3, 2019
    Assignee: SEEREAL TECHNOLOGIES GMBH
    Inventors: Norbert Leister, Ralf Haussler, Armin Schwerdtner
  • Patent number: 10372288
    Abstract: A representation device for representing and interacting with a three-dimensional virtual scenario includes an input unit and at least one representation region for representing the three-dimensional scenario. A marking element may be moved on a virtual surface area with two translational degrees of freedom such that each virtual object in the three-dimensional virtual scenario may be selected with the marking element.
    Type: Grant
    Filed: September 5, 2012
    Date of Patent: August 6, 2019
    Assignee: Airbus Defence and Space GmbH
    Inventors: Leonhard Vogelmeier, David Wittmann
  • Patent number: 10353344
    Abstract: An apparatus and a method for optimized calculation of 2D sub-holograms for object points of a three-dimensional scene and a pipeline for real-time calculation of holograms are provided. The invention shortens the calculation time of a hologram for representing a three-dimensional scene and/or to reduce the calculation complexity of such a hologram. This is achieved by a 2D sub-hologram of an object point, which has image elements of the spatial light modulator, comprises a half 1D sub-hologram, where the radius of each image element is determined and each image element of the 2D sub-hologram is fixedly assigned to at least one image element of the half 1D sub-hologram with identical or similar radius by way of an electronic circuit, by a method for encoding a hologram, and by a pipeline on the basis of FPGA and/or ASIC.
    Type: Grant
    Filed: June 4, 2014
    Date of Patent: July 16, 2019
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventor: Enrico Zschau
  • Patent number: 10345501
    Abstract: An apparatus and method, the apparatus including a light guide element including a plurality of input diffraction gratings configured to couple a plurality of incident beams of light into the light guide element and at least one output diffraction grating configured to couple the plurality of beams of light out of the light guide element to at least one image sensor to enable a plurality of images to be captured.
    Type: Grant
    Filed: October 5, 2012
    Date of Patent: July 9, 2019
    Assignee: Nokia Technologies Oy
    Inventor: Martin Schrader
  • Patent number: 10318225
    Abstract: Holographic augmented authoring provides an extension to personal computing experiences of a universal or conventional productivity application. A user interface of a productivity application executing on a personal computing device can be switched from a touch or conventional mode to a holographic mode, which opens communication between the personal computing device and a holographic enabled device providing a mixed reality system. A semantic representation of a command in a productivity application is generated as a hologram in a mixed reality system and the change to a content file from performing the command in the mixed reality system does not require a holographic enabled device to view or even further edit.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: June 11, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventor: Jonathan Kaufthal
  • Patent number: 10310335
    Abstract: Examples are disclosed relating to reducing orders of diffraction patterns in phase modulating devices. An example phase modulating device includes a phase modulating layer having first and second opposing sides, a common electrode adjacent the first side of the phase modulating layer, a plurality of pixel electrodes adjacent the second side of the phase modulating layer, and blurring material disposed between the phase modulating layer and the pixel electrodes. In the example phase modulating device, the blurring material is configured to smooth phase transitions in the phase modulating layer between localized areas associated with the pixel electrodes, the pixel electrodes have a pixel pitch by which the pixel electrodes are distributed along the phase modulating layer, and the pixel electrodes are separated from one another by an inter-pixel gap, where the ratio of the inter-pixel gap to the pixel pitch is between 0.50 and 1.0.
    Type: Grant
    Filed: September 6, 2016
    Date of Patent: June 4, 2019
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Andreas Georgiou, Joel S. Kollin
  • Patent number: 10310281
    Abstract: Apparatus for projecting a pattern includes a laser source, a collimating lens and a diffractive optical element (DOE) to diffract the collimated laser beam into a specific dot pattern for sensing the depth of a three dimensional (3D) surface.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: June 4, 2019
    Assignee: K Laser Technology, Inc.
    Inventor: Wai-Hon Lee
  • Patent number: 10241471
    Abstract: At least one embodiment relates to an autofocus method for determining a focal plane for at least one object. The method includes reconstructing a holographic image of the at least one object such as to provide a reconstructed image at a plurality of different focal depths. The reconstructed image includes a real component and an imaginary component. The method also include performing a first edge detection on the real component for at least two depths of the plurality of different focal depths and a second edge detection on the imaginary component for the at least two depths. Further, the method includes obtaining a first measure of clarity for each of the at least two depths based on a first measure of statistical dispersion with respect to the first edge detection and a second measure of clarity.
    Type: Grant
    Filed: November 30, 2015
    Date of Patent: March 26, 2019
    Assignees: IMEC TAIWAN CO., IMEC VZW
    Inventors: Ching-Chun Hsiao, Ting-Ting Chang, Chao-Kang Liao
  • Patent number: 10234268
    Abstract: A method for digital holographic microtomography comprises (a) providing at least one wavefront controlling device for driving a sample to be rotated and/or an incident beam scanning the sample, (b) utilizing a digital holographic access unit for recording the transmitted or reflected wavefronts of the sample, (c) utilizing a digital holography reconstructing method for reconstructing the transmitted or reflected wavefronts of the sample, and (d) utilizing a tomographic reconstruction approach for reconstructing three dimensional image information of the sample.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: March 19, 2019
    Assignee: National Taiwan Normal University
    Inventors: Chau-Jern Cheng, Yu-Chih Lin, Han-Yen Tu
  • Patent number: 10228653
    Abstract: A plasma generator including: a femtosecond light source that generates a laser pulse beam; a processor that computes a computer generated hologram; a spatial light modulator that modifies the laser pulse beam in accordance with the computer generated hologram; a three dimensional scanner optically coupled to the spatial light modulator to direct the modified laser pulse beam to one or more focal points in air; and a lens that focuses the modified laser pulse beam. The modified laser pulse beam induces a light emission effect at a one or more focal points that can be visible, audible, and palpable.
    Type: Grant
    Filed: April 7, 2016
    Date of Patent: March 12, 2019
    Assignee: Pixie Dust Technologies, Inc.
    Inventors: Yoichi Ochiai, Takayuki Hoshi, Jun Rekimoto, Kota Kumagai, Satoshi Hasegawa, Yoshio Hayasaki
  • Patent number: 10228559
    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: August 22, 2017
    Date of Patent: March 12, 2019
    Assignee: DAQRI HOLOGRAPHICS, LTD
    Inventors: Jamieson Christmas, Dackson Masiyano
  • Patent number: 10218141
    Abstract: An iterative Fourier transform unit in a modulation pattern calculation apparatus performs a Fourier transform on a waveform function including an intensity spectrum function and a phase spectrum function, performs a replacement of a temporal intensity waveform function based on a desired waveform after the Fourier transform, and then performs an inverse Fourier transform. The iterative Fourier transform unit performs the replacement using a result of multiplying a function representing the desired waveform by a coefficient, and the coefficient has a value in which a difference between the function after the multiplication and the temporal intensity waveform function after the Fourier transform is smaller than a difference before the multiplication of the coefficient.
    Type: Grant
    Filed: May 11, 2016
    Date of Patent: February 26, 2019
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Koyo Watanabe, Takashi Inoue, Koji Takahashi
  • Patent number: 10186178
    Abstract: Meta-material with individually-addressable elements is applied to a video projector screen to dynamically control light reflectance and grayscale. Example meta-material includes piezo electric elements, liquid crystal elements, and electrochromic elements. Methods of calibrating the screen with meta-material are disclosed. In one embodiment the screen is adjustable pixel by pixel. In another embodiment the screen is adjust by multi-pixel spans per line of meta-material. A camera may be used to provide feedback to the alignment system to make corrective adjustments to the screen.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: January 22, 2019
    Assignee: Sony Corporation
    Inventors: Steven Richman, Thomas Dawson, Frederick J. Zustak
  • Patent number: 10175651
    Abstract: A method and apparatus for processing a three-dimensional image are provided. The method includes receiving original color data and original depth data of a plurality of layers of an original holographic image, selecting reference layers from among the plurality of layers, mapping adjustment color data of a non-selected layer, which is determined based on using the original depth data of the non-selected layer and the reference layers, to each of the reference layers, and generating a computer generated hologram image by using the original color data of the reference layers and the adjustment color data that has been mapped to the reference layers.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: January 8, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yuntae Kim, Geeyoung Sung, Hongseok Lee
  • Patent number: 10168668
    Abstract: A method of forming a rarefied hologram for video imaging and 3D lithography by using an MEMS/SLM with a plurality of pixels on the surface at a fixed distance from the retina of the viewer' eye. The method consists of providing an initial desired image, which has to be holographically reproduced by the MEMS/SLM as a remote virtual 3D image visible by the viewer's eye. The desired image is coded in a special manner and mapped by encoding and calculating only a part of the initial desired image. The operations of the pixels are controlled in accordance with the code for generation of the holographic pattern. Since only a part of a holographic pattern of the image is encoded and calculated, it becomes possible to reduce the calculation time and decrease parasitic light scattering.
    Type: Grant
    Filed: December 21, 2016
    Date of Patent: January 1, 2019
    Inventors: Vladimir Yankov, Konstantin Kravtsov, Leonid Velikov
  • Patent number: 10162307
    Abstract: A system for generating a lithographic image contains a light source that emits a diverging light beam and a reflective concave curvilinear surface onto which the diverging light beam falls and which reflects the diverging beam in the form of a converging beam. A digital hologram, which is placed into a diverging beam between the light source and the reflective surface, is coded in accordance with the lithographic image either preliminarily or dynamically, with the use of a spatial light modulator. From the curvilinear surface the spatially modulated beam is reflected in the form of a converging beam which falls onto an image-receiving substrate that is located in the image restoration plane and on which the lithographic image is generated.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: December 25, 2018
    Inventors: Vadim Rakhovsky, Mikhail Borisov, Aleksey Shamaev, Dmitry Chelyubeev, Vitaly Chernik, Peter Mikheev
  • Patent number: 10157582
    Abstract: A display device includes a video input unit that receives a video signal; a display control unit that corrects the video signal; and a display unit that has a screen on which a video according to the corrected video signal is displayed. The display device further includes a gradation correction map generation device that generates a gradation correction map which indicates a corresponding relationship between a plurality of positions on the screen and a correction value for gradation of the video signal at each of the positions; the gradation correction map generation device generates the gradation correction map according to a luminance unevenness map which indicates a corresponding relationship between the plurality of the positions and uncorrected luminance, which is luminance when correction is not performed, at each of the positions, and a second gamma characteristic which indicates a corresponding relationship between luminance at a specific position on the screen.
    Type: Grant
    Filed: August 28, 2014
    Date of Patent: December 18, 2018
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventor: Katsuyuki Matsui
  • Patent number: 10158848
    Abstract: A projection video display that projects video image suppresses deterioration of its quality which is attributed to a change in an optical path of the video image. A video signal generator performs control such that a second subframe in an N-th frame in a left-eye image is displayed on DMDs and then a second subframe in an N-th frame in a right-eye image is displayed on the DMDs. Furthermore, the video signal generator performs control such that a displayed location is not changed on a screen and the same types of subframes are displayed at the time when frames are switched.
    Type: Grant
    Filed: October 3, 2016
    Date of Patent: December 18, 2018
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Ken Mashitani, Takaaki Abe, Tamotsu Akeyama
  • Patent number: 10146180
    Abstract: A projection device is provided for displaying at least one of a two-dimensional and three-dimensional scene or of content. The projection device comprises an illumination device, at least two spatial light modulator devices and an optical system. The illumination device comprises at least one light source for generating a holographic illumination. One of said spatial light modulator devices is designed as spatial light modulator device modulating at least the phase of the light for the holographical generation of illumination patterns. This spatial light modulator device as first spatial light modulator device is followed by a second spatial light modulator device. The optical system is disposed to illuminate the second spatial light modulator device with a predefinable light distribution generated by the first spatial light modulator device.
    Type: Grant
    Filed: June 30, 2015
    Date of Patent: December 4, 2018
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Norbert Leister, Gerald Fuetterer, Bo Kroll, Hagen Stolle
  • Patent number: 10126710
    Abstract: A spatial light modulator and a method for displaying a computer generated hologram are disclosed. The spatial light modulator includes a plurality of MEMS units arranged in an array, each of the MEMS units corresponds to a pixel of a computer generated hologram and includes a sensing device, a light shielding portion and a driving device. The sensing device is configured for receiving position information that is obtained through Roman encoding a pixel corresponding to an MEMS unit including the sensing device and the position information is transmitted to the driving device by the sensing device. The driving device is configured for controlling the light shielding portion to move to a position corresponding to the position information in response to the received position information of the light shielding portion when the present frame is displayed.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: November 13, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Naifu Wu, Bei Niu, Tao Wang, Wei Wei, Kun Wu, Chia Chiang Lin, Chunmiao Zhou
  • Patent number: 10102814
    Abstract: A controllable device for phase modulation of coherent light comprises a modulator matrix having a plurality of liquid crystal modulator cells each being adapted to modulate a phase value of light passing through a liquid crystal modulator cell depending on a voltage, which is applied to the liquid crystal modulator cell; at least one polarity area of said modulator matrix including at least one liquid crystal modulator cell; at least one storage unit for storing at least one pair of voltage values of which one has a positive and the other has a negative polarity for the liquid crystal modulator cells, whereby the pair of voltage values corresponds to a predetermined phase value; and a control unit for selectively applying one pair of voltage values to one liquid crystal modulator cell.
    Type: Grant
    Filed: October 1, 2012
    Date of Patent: October 16, 2018
    Assignees: SEEREAL TECHNOLOGIES S.A., SHARP CORPORATION
    Inventors: Robert Missbach, Stephan Reichelt, Norbert Leister, Ralf Haussler, Naru Usukura, Hiromi Katoh, Yuichi Kanbayashi
  • Patent number: 10101707
    Abstract: Provided is a method and an apparatus for correcting a distortion of a three-dimensional (3D) hologram, in which the method is performed by the apparatus and includes generating a sliced two-dimensional (2D) section of a hologram by slicing the hologram while performing translation in an optical axis direction, obtaining a sharp sliced image of the hologram from a sequence of images of generated sliced 2D sections using a focusing function of a camera, and analyzing a distortion of the obtained sliced image, and using such a method and apparatus may enable correction of a distortion of a 3D hologram independently from a display structure.
    Type: Grant
    Filed: January 22, 2016
    Date of Patent: October 16, 2018
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Tae One Kim, Hyun Eui Kim, Jae Han Kim, Jin Woong Kim, Kyung Ae Moon, Jin Soo Choi
  • Patent number: 10088803
    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: January 19, 2016
    Date of Patent: October 2, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Wontaek Seo, Hongseok Lee, Juwon Seo, Hoon Song, Jungkwuen An
  • Patent number: 10054793
    Abstract: A holographic display apparatus includes a spatial light modulator configured to generate hologram patterns to modulate light; an illuminator configured to emit the light to the spatial light modulator; and a controller configured to control operations of the spatial light modulator and the illuminator, the spatial light modulator being configured to generate, from among the hologram patterns, a first hologram pattern and a second hologram pattern according to the control operations of the controller, the first hologram pattern and the second hologram pattern being configured to form a first hologram image and a second hologram image having different viewpoints, and the controller being configured to set a first phase modulation value of the first hologram pattern and a second phase modulation value of the second hologram pattern to be different from each other such that hologram images having different viewpoints are formed.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: August 21, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jungkwuen An, Geeyoung Sung, Sunil Kim, Hongseok Lee, Chilsung Choi
  • Patent number: 9965106
    Abstract: In one embodiment, an apparatus includes a two-dimensional array of pixels configured to produce an image. The apparatus also includes a touch sensor comprising a plurality of electrodes aligned with one or more gaps between one more pixels of the two-dimensional array of pixels. The plurality of electrodes are aligned such that the plurality of electrodes do not cross over at least one pixel of the two-dimensional array of pixels.
    Type: Grant
    Filed: January 13, 2012
    Date of Patent: May 8, 2018
    Assignee: Atmel Corporation
    Inventors: David Brent Guard, Matthew Trend
  • Patent number: 9965836
    Abstract: Provided is a method for performing a Fourier transformation for generating a computer-generated holographic (CGH) image. The method includes generating first intermediate data by performing a first FFT calculation that relates to coordinates of a pupil of a user with respect to input image data; generating second intermediate data by calculating a light concentration effect correction term for correcting a light concentration effect occurring at the pupil of the user and multiplying the first intermediate data by the light concentration effect correction term; and performing a second FFT calculation that relates to the coordinates of the pupil of the user with respect to the second intermediate data.
    Type: Grant
    Filed: September 19, 2016
    Date of Patent: May 8, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hojung Kim, Juwon Seo, Hongseok Lee
  • Patent number: 9939781
    Abstract: A method of processing a pixellated image to retrieve a phase distribution representative of the image. The phase distribution representative of the image is in the Fourier domain. The method includes padding the image pixels with padding, or non-image, pixels to increase the total number of pixels in the pixellated image. The method further includes processing the padding or non-image pixels differently to the image pixels in each iteration of the iterative method.
    Type: Grant
    Filed: October 28, 2016
    Date of Patent: April 10, 2018
    Assignee: Two Trees Photonics Limited
    Inventor: Jamieson Christmas
  • Patent number: 9936175
    Abstract: A free-form lens (for example a phase modulator, lens or deformable mirror) may be made to reproduce a light pattern specified by image data. Source regions on the free-form lens are mapped to target regions areas on an image. Areas of the source regions are adjusted to vary the amount of light delivered to each of the target regions. Adjustment of the source areas may be achieved using a L-BFGS optimization which preferably incorporates smoothness and curl regularizers. Embodiments apply parallel processing to obtain control values for a free form lens in real time or near real time. Apparatus may process image data and display an image by controlling a dynamically variable free form lens using the processed image data.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: April 3, 2018
    Assignee: MTT Innovation Incorporated
    Inventors: Gerwin Damberg, Anders Ballestad, Raveen Kumaran, James Gregson
  • Patent number: 9915920
    Abstract: Briefly stated, technologies are generally described for providing a computer-generated holography (CGH). Example devices/systems described herein may use one or more of a server device and/or a client device. The server device may be configured to provide CGH data to a client device including a holographic image display unit. The server device may receive information on the holographic image display unit from the client device, calculate the CGH data from three-dimensional image data and the information on the holographic image display unit, and/or transmit the CGH data to the client device. The client device may be configured to provide a holographic image. The client device may reconstruct the holographic image on the holographic image display unit using CGH data and a reconstruction beam, transmit information on the holographic image display unit to the server device, and/or receive the CGH data from the server device.
    Type: Grant
    Filed: February 18, 2014
    Date of Patent: March 13, 2018
    Assignee: EMPIRE TECHNOLOGY DEVELOPMENT LLC
    Inventor: Hyun Oh Oh
  • Patent number: 9906760
    Abstract: A free-form lens (for example a phase modulator, lens or deformable mirror) may be made to reproduce a light pattern specified by image data. Source regions on the free-form lens are mapped to target regions areas on an image. Areas of the source regions are adjusted to vary the amount of light delivered to each of the target regions. Adjustment of the source areas may be achieved using a L-BFGS optimization which preferably incorporates smoothness and curl regularizers. Embodiments apply parallel processing to obtain control values for a free form lens in real time or near real time. Apparatus may process image data and display an image by controlling a dynamically variable free form lens using the processed image data.
    Type: Grant
    Filed: January 16, 2017
    Date of Patent: February 27, 2018
    Assignee: MTT Innovation Incorporated
    Inventors: Gerwin Damberg, Anders Ballestad, Raveen Kumaran, James Gregson
  • Patent number: 9897792
    Abstract: The invention relates to an image processing method and system for constructing composite image with extended depth of field. The composite image may be constructed from a plurality of source images of a scene stored in an image stack. The method includes aligning the images in the image stack such that every image in the image stack is aligned with other images in the stack, performing illumination and color correction on the aligned images in the image stack, generating an energy matrix for each pixel of each illumination and color corrected image in the image stack by computing energy content for each pixel, generating a raw index map that contains the location of every pixels having maximum energy level among all the images in the image stack, generating degree of defocus ma and constructing the composite image.
    Type: Grant
    Filed: November 4, 2013
    Date of Patent: February 20, 2018
    Assignee: L&T TECHNOLOGY SERVICES LIMITED
    Inventors: Rabi Rout, Vajendra Desai, Harikrishnan Ramaraju, Gineesh Sukumaran, Sistu Ganesh, Devvrata Priyadarshi, Eldho Abraham, Saurabh Mishra, Sudipta Kumar Sahoo, Nivedita Tripathi, Siddhartha Goutham, Kunal Gauraw
  • Patent number: 9891586
    Abstract: A near-eye device includes a spatial light modulator and a beam combiner. The spatial light modulator includes an array of phase modulating elements arranged to apply a phase delay distribution to incident light. The beam combiner includes a first optical input arranged to receive spatially modulated light from the spatial light modulator and a second optical input having a field of view of the real world.
    Type: Grant
    Filed: March 31, 2014
    Date of Patent: February 13, 2018
    Assignee: DAQRI Holographics Limited
    Inventors: Jamieson Christmas, Dackson Masiyano
  • Patent number: 9891172
    Abstract: A microscope apparatus includes an objective lens; a light source for outputting light with which a biological sample is irradiated via the objective lens; a shape acquisition unit for acquiring information on at least one of a surface shape of the biological sample and a structure directly under the surface of the biological sample; a hologram generation unit for generating aberration correction hologram data for correcting an aberration caused by the at least one on the basis of the information acquired by the shape acquisition unit; a spatial light modulator to which a hologram based on the aberration correction hologram data is presented and for modulating the light output from the light source; a photodetector for detecting an intensity of light generated in the biological sample and outputs a detection signal.
    Type: Grant
    Filed: May 18, 2015
    Date of Patent: February 13, 2018
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Naoya Matsumoto, Koyo Watanabe, Hirotoshi Terada
  • Patent number: 9869969
    Abstract: A holographic display includes: a light source; at least one beam steerer configured to control a propagation direction of a beam emitted from the light source; an optical element configured to condense a beam passing through the at least one beam steerer; and a spatial light modulator configured to form a three-dimensional (3D) image by modulating a beam passing through the at least one beam steerer.
    Type: Grant
    Filed: April 9, 2015
    Date of Patent: January 16, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hoon Song, Geeyoung Sung, Kanghee Won, Hongseok Lee
  • Patent number: 9869971
    Abstract: Provided is a hologram generation method including receiving three-dimensional (3D) data information, determining a first projection position onto which the 3D data information is projected on a hologram plane corresponding to a first spatial light modulator (SLM), and a second projection position onto which the 3D data information is projected on a hologram plane corresponding to a second SLM, generating a first Fresnel zone plate (FZP) pattern corresponding to the first projection position, and determining the first FZP pattern to be an FZP pattern corresponding to the second projection position.
    Type: Grant
    Filed: January 4, 2016
    Date of Patent: January 16, 2018
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Eun Young Chang, Soo Hyun Lee, Jin Woong Kim, Tae One Kim, Kyung Ae Moon, Joong Ki Park
  • Patent number: 9864186
    Abstract: An electrowetting optical device including a conductive liquid and a non-conductive liquid, the liquids being non miscible, and a dielectric enclosure on which both fluids are in contact and form a triple interface. The non-conductive liquid includes from 0.0001 weight percent to 1 about weight percent of a surface adsorbing agent. The surface adsorbing agent is an amphiphilic molecule having a solubility in water lower than 0.1 about weight percent at 25° C.
    Type: Grant
    Filed: July 16, 2015
    Date of Patent: January 9, 2018
    Assignee: PARROT DRONES
    Inventors: Géraldine Malet, Stéphanie Chevalliot, Rebecca Rabot, Benjamin Burger
  • Patent number: 9851693
    Abstract: A method and apparatus for correcting a distortion of a holographic display. The method includes tracking a location of a viewing window by tracking a location of a pupil of a user and calculating a central location of the viewing window, generating a wavefront aberration by determining an object point and an image point based on a location of a light source and the central location of the viewing window and using ray tracing, and calculating a complex aberration light field using the generated wavefront aberration. Thus, a quality of a holographically reproduced image in a viewing window-based holographic display may be improved.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: December 26, 2017
    Assignee: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
    Inventors: Min Sik Park, Hyun Eui Kim
  • Patent number: 9811052
    Abstract: A hologram generation apparatus is based on a hologram imaging system which includes an object space where an object is situated and a retina space or region where an image is formed within an eyeball of an observer. The hologram generation apparatus includes a modeling unit for generating first graphic data by transforming a 3D image of a 3D object to a set of polygonal facets; a data transformation unit for generating second graphic data by transforming the first graphic data from the modeling unit to normal/reference coordinates in the retina region; a hologram generation unit for generating a first computer generated hologram (CGH1), which is light wave analysis data for the second graphic data; and a hologram transformation unit for transforming the first computer generated hologram (CGH1) in the retina region to a second computer generated hologram (CGH2) in the object space.
    Type: Grant
    Filed: July 8, 2015
    Date of Patent: November 7, 2017
    Assignee: Korea University Research and Business Foundation, Sejong Campus
    Inventors: Hwi Kim, Dajeong Im
  • Patent number: 9798165
    Abstract: A light modulation apparatus 1A includes a first spatial light modulator, a pinhole member, and a second spatial light modulator. The first spatial light modulator has a phase modulation plane on which a kinoform for performing intensity modulation is displayed, and generates modulated light P2. The pinhole member has a light passing hole for letting a first-order light component of the modulated light P2 pass therethrough, and blocks a zeroth-order light component of the modulated light P2. The second spatial light modulator has a polarization modulation plane that controls the polarization state of the modulated light P2 incident on the polarization modulation plane through the light passing hole of the pinhole member, and generates modulated light P3.
    Type: Grant
    Filed: October 22, 2013
    Date of Patent: October 24, 2017
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventor: Yuu Takiguchi
  • Patent number: 9766449
    Abstract: Systems, devices, and methods for transparent displays that are well-suited for use in wearable heads-up displays are described. Such transparent displays include a light source that sequentially generates pixels or other discrete portions of an image. Respective modulated light signals corresponding to the respective pixels/portions are sequentially directed towards at least one dynamic reflector positioned on a lens of the transparent display within the user's field of view. The dynamic reflector (such as a MEMS-based digital micromirror) scans the modulated light signals directly over the user's eye and into the user's field of view. Successive portions of the image are generated in rapid succession until the entire image is displayed to the user.
    Type: Grant
    Filed: June 24, 2015
    Date of Patent: September 19, 2017
    Assignee: THALMIC LABS INC.
    Inventors: Matthew Bailey, Stefan Alexander
  • Patent number: 9766775
    Abstract: A mobile terminal including a touchscreen; a wireless communication unit configured to wirelessly communicate with an external watch terminal having a holography module disposed in a band of the watch terminal and being worn by a user; a sensing unit configured to sense a gesture of the user; and a controller configured to display a launch screen of a prescribed application on the touchscreen, receive a prescribed gesture sensed through the sensing unit, and control the wireless communication unit to transmit a control command to the external terminal to output a holographic image corresponding to the launch screen, in response to the received prescribed gesture.
    Type: Grant
    Filed: October 13, 2015
    Date of Patent: September 19, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Jumin Chi, Juha Hyun
  • Patent number: 9740168
    Abstract: A complex spatial light modulator and a three-dimensional (3D) image display apparatus including the complex spatial light modulator are provided. The complex spatial light modulator includes: a spatial light modulator that modulates a phase of light; a prism array including a plurality of prism units, each of the plurality of prism units including a first prism surface and second prism surface, where light from the spatial light modulator is incident on the prism array; and a polarization-independent diffracting element that diffracts light that has passed through the prism array.
    Type: Grant
    Filed: January 29, 2014
    Date of Patent: August 22, 2017
    Assignees: SAMSUNG ELECTRONICS CO., LTD., KOREA UNIVERSITY RESEARCH AND BUSINESS FOUNDATION
    Inventors: Gee-young Sung, Hwi Kim, Hoon Song, Kang-hee Won, Hong-seok Lee
  • Patent number: 9733617
    Abstract: A display device according to embodiments of the present disclosure includes a determination unit to determine a display mode, a light generator to selectively irradiate a 2D light or a hologram 3D light, a spatial light modulator to selectively display a 2D image or a hologram 3D image, and a control unit that controls the light generator to selectively irradiate the 2D light or the hologram 3D light and controls the spatial light modulator to modulate the 2D light or the hologram 3D light irradiated from the light generator to display the 2D image or the hologram 3D image according to the display mode determined by the determination unit.
    Type: Grant
    Filed: August 8, 2013
    Date of Patent: August 15, 2017
    Assignee: LG ELECTRONICS INC.
    Inventors: Woojae Park, Dowoo Kwon, Wonseok Moon
  • Patent number: 9727970
    Abstract: A method of generating a hologram includes receiving three-dimensional (3D) image data, dividing 3D image data into data groups which are independent from one another, by a first processor; calculating, from at least one of the data groups, hologram values to be displayed at respective positions on a hologram plane, by the first processor; calculating, from at least another one of the data groups, hologram values to be displayed at the respective positions on the hologram plane by a second processor, and summing the calculated hologram values for each of the respective positions on the hologram plane, by the first processor or the second processor, or by the first processor and the second processor in parallel.
    Type: Grant
    Filed: March 3, 2015
    Date of Patent: August 8, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hoon Song, Hojung Kim, Juwon Seo, Hongseok Lee
  • Patent number: 9715216
    Abstract: We fabricate a stereoscopic hologram of an object by capturing a sequence of 2D images of the object, moving camera along a linear axis past the object and keeping the optical axis of the camera perpendicular at each of the positions. The camera lens and image recording surface are translated along the axis such that a fiducial part of the image does not move. The sequence is replayed and a first volume hologram is recorded by recording holograms of the captured images on a diffusing screen in different spatial locations on a surface of the first volume hologram. This is then replayed to form a stereoscopic image of the object and a second, volume reflection hologram of the replayed image is recorded to provide the stereoscopic hologram. A central image of the sequence is aligned to the fiducial part of the holographic image to make the resulting hologram “user-friendly”.
    Type: Grant
    Filed: October 5, 2011
    Date of Patent: July 25, 2017
    Assignee: AOSYS LIMITED
    Inventors: John David Wiltshire, Patrick Francis Flynn, Jonathan Henry Wiltshire
  • Patent number: 9709953
    Abstract: A method for despeckling the image reproduced by a Computer Generated Hologram (CGH) including reproducing a CGH, and jittering a location of an exit pupil of an optical system through which the CGH is imaged, relative to an observer's input pupil, so as to shift at least some speckles out of the exit pupil. A method for despeckling a Computer Generated Holographic image including computing a first modulation for a first holographic image, and computing a second modulation for a second holographic image of a same holographic image using an initial phase distribution used for calculating the first holographic image as an initial phase distribution used for calculating the second modulation. Related apparatus and methods are also described.
    Type: Grant
    Filed: July 30, 2013
    Date of Patent: July 18, 2017
    Assignee: Real View Imaging Ltd.
    Inventors: Shlomo Alon-Braitbart, Shaul Alexander Gelman, Carmel Rotschild
  • Patent number: 9678476
    Abstract: A holographic display system for generating a super hologram with full parallax in different fields of view in the horizontal and vertical directions. The display system includes assemblies or subsystems each adapted to combine holographic displays and coarse integral displays to produce or display a coarse integral hologram. The display system is adapted to combine such displays or display systems to add more detail or information. For example, the display system can be assembled as if it were made up of “holographic bricks” that can be stacked and combined to provide a unique image/output. Briefly, the display system described herein teaches techniques for combining coarse integral holographic (CIH) displays in a seamless and scalable manner, e.g., a display system where multiple spatial light modulators (SLMs) can be placed or provided behind coarse integral optics.
    Type: Grant
    Filed: February 23, 2016
    Date of Patent: June 13, 2017
    Assignee: Disney Enterprises, Inc.
    Inventor: Quinn Y. Smithwick
  • Patent number: 9639056
    Abstract: Systems and methods are disclosed herein in which multi-level square wave excitation signals are used instead of or in addition to fully-analog excitation signals to drive an array of transceiver elements to create a sound field. Use of multi-level square wave excitation signals produces acceptable transceiver output with reduced complexity, cost, and/or power consumption as compared with use of fully-analog excitation signals. In addition, use of such signals facilitates system implementation using application-specific integrated circuits (ASICs) and is not as restricted in voltage level and speed. At the same time, the benefits and applications of fully-analog excitation signals (e.g., acoustic holography, beam superposition, signal-to-noise ratio (SNR) improvements, suppression of parasitic modes, increased material penetration, potential for coded pulsing algorithms and suppression of side lobes in ultrasonic field) can still be achieved with multi-level square wave excitation signals.
    Type: Grant
    Filed: September 17, 2013
    Date of Patent: May 2, 2017
    Assignee: GENERAL ELECTRIC COMPANY
    Inventors: Stephan Falter, James Norman Barshinger, Dirk Lange, Mark Howard Feydo, Werner Lammerich
  • Patent number: 9632482
    Abstract: A sub-hologram generation method and an apparatus for a hologram display are provided, the apparatus including at least a first calculation unit configured to calculate a size of a first sub-hologram area corresponding to a first hologram object using a user viewing window, a second calculation unit configured to calculate a size of a second sub-hologram area corresponding to the first hologram object based on a size of a display pixel, and a determiner configured to compare the size of the first sub-hologram area and the size of the second sub-hologram area, and to determine a sub-hologram area corresponding to the first hologram object based on a result of the comparing.
    Type: Grant
    Filed: July 10, 2014
    Date of Patent: April 25, 2017
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seok Lee, Dong Kyung Nam
  • Patent number: 9628843
    Abstract: A system for controlling infrared (IR) enabled devices by projecting coded IR pulses from an active illumination depth camera is described. In some embodiments, a gesture recognition system includes an active illumination depth camera such as a depth camera that utilizes time-of-flight (TOF) or structured light techniques for obtaining depth information. The gesture recognition system may detect the performance of a particular gesture associated with a particular electronic device, determine a set of device instructions in response to detecting the particular gesture, and transmit the set of device instructions to the particular electronic device utilizing coded IR pulses. The coded IR pulses may imitate the IR pulses associated with a remote control protocol. In some cases, the coded IR pulses transmitted may also be used by the active illumination depth camera for determining depth information.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: April 18, 2017
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Sagi Katz, Avishai Adler, Giora Yahav