For Synthetically Generating A Hologram Patents (Class 359/9)
  • 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: 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: 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: 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: 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: 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: 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
  • 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