Superimposed Holograms Only Patents (Class 359/24)
  • Patent number: 10877200
    Abstract: A beam steering method and device are provided. The beam steering method includes outputting, from a hologram recording medium on which a plurality of signal light beams having different steering information are recorded, signal light beam having specific steering information, by making reference light having a specific characteristic incident on the hologram recording medium. The method further includes o obtaining information about an object existing in the external environment based on the output signal light.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: December 29, 2020
    Assignees: SAMSUNG ELECTRONICS CO., LTD., The Board of Trustees of the Leland Stanford Junior University
    Inventors: Wonjae Joo, Mark L. Brongersma, Junghyun Park
  • Patent number: 10474103
    Abstract: A hologram image apparatus includes a plurality of holographic panels, each holographic panel comprising a transparent panel encoded with a portion of a composite hologram image. The hologram image apparatus also includes one or more light sources configured to illuminate each holographic panel of the plurality of the holographic panels from one or more incident angles to produce the composite hologram image.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: November 12, 2019
    Assignee: Universal City Studios LLC
    Inventor: Danielle Holstine
  • Patent number: 10394029
    Abstract: An optical reflective device for reflecting light including a grating medium having a first and second grating structure is disclosed. The first grating structure may be configured to reflect light of a wavelength about a first reflective axis offset from a surface normal of the grating medium at a first incidence angle. The second grating structure may be configured to reflect light of the wavelength about a second reflective axis offset from the surface normal of the grating medium at a second incidence angle different from the first incidence angle. The second reflective axis may be different from the first reflective axis.
    Type: Grant
    Filed: April 4, 2017
    Date of Patent: August 27, 2019
    Assignee: Akonia Holographics, LLC
    Inventors: Mark R. Ayres, Adam Urness
  • Patent number: 10146183
    Abstract: An optical device including a hologram recording medium that can reproduce an image of a reference member and an irradiation unit that emits a coherent light beam to the optical device. The irradiation unit includes a light source for emitting a coherent light beam and a scanning device capable of adjusting a reflection angle of the coherent light beam emitted from the light source and that makes a reflected coherent light beam scan the hologram recording medium. The light source has light sources for emitting coherent light beams having different wavelength ranges. The hologram recording medium has a plurality of recording areas to be scanned with a plurality of coherent light beams reflected by the scanning device, respectively. Each of the plurality of recording areas has an interference fringe that diffracts a coherent light beam of the corresponding wavelength range.
    Type: Grant
    Filed: May 24, 2016
    Date of Patent: December 4, 2018
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Makio Kurashige, Kazutoshi Ishida, Tomoe Takanokura, Yasuyuki Ooyagi
  • Patent number: 9996899
    Abstract: A computer-implemented method for scaling an object is described. Two or more lines are generated on a display of the mobile device. The user is imaged with a camera of the mobile device. The image of the user is displayed on the display of the mobile device. Upon determining the feature of the user aligns with the first of the two or more lines on the display of the mobile device, an image of the user is captured. A number of pixels per unit of distance are determined based at least in part on a number of pixels between a predetermined point on the captured image and the feature of the user, and a predetermined distance between a camera of the mobile device and the first of the two or more lines on the display.
    Type: Grant
    Filed: May 8, 2015
    Date of Patent: June 12, 2018
    Assignee: glasses.com Inc.
    Inventors: Jonathan Coon, Darren Turetzky
  • Patent number: 9761264
    Abstract: A light information recording/reproducing apparatus can improve the optical efficiency of an optical system at the time of reproduction to thereby improve the reproduction transfer rate. An optical element (for example, an optical isolator), which removes a return light beam of a light beam, is arranged such that the light beam passes through the optical element at the time of recording information in an optical information recording medium and such that the light beam does not pass through the optical element at the time of reproducing information from the optical information recording medium.
    Type: Grant
    Filed: April 25, 2016
    Date of Patent: September 12, 2017
    Assignee: HITACHI-LG DATA STORAGE, INC.
    Inventors: Mitsuru Nagasawa, Kazuyoshi Yamazaki, Kenichi Shimada
  • Patent number: 9601147
    Abstract: To provide an optical information recording and reproducing apparatus capable of correct positioning, in an optical information recording and reproducing apparatus which branches a light beam into reference light and signal light to cause interference and records an obtained interference fringe as a hologram on an optical information recording medium and reproduces the hologram recorded by applying the reference light onto the optical information recording medium, the apparatus has an image pickup element which detects reproduction light passing through an aperture 101 in reproduction light obtained by applying the reference light onto the optical information recording medium and generates a reproduction signal, photo detectors 104a, 104b, 104c, and 104d that are different from the image pickup element and detect reproduction light applied on a location on the periphery of the aperture 101, and a computing unit which computes a position error signal based on outputs from the photo detectors.
    Type: Grant
    Filed: November 27, 2012
    Date of Patent: March 21, 2017
    Assignee: Hitachi Consumer Electronics Co., Ltd.
    Inventor: Tatsuro Ide
  • Patent number: 9542970
    Abstract: A light interference module includes an object lens, a first light-guiding element, and a second light-guiding element. The object lens is configured to project a signal light beam to an optical storage media. The first light-guiding element is configured to project a first reference light beam to the optical storage media, in which the first reference light beam and the signal light beam produce a first interference pattern on the optical storage media. The second light-guiding element is configured to project a second reference light beam to the optical storage media, in which the second reference light beam and the signal light beam produce a second interference pattern on the optical storage media, and the first interference pattern is different from the second interference pattern.
    Type: Grant
    Filed: October 12, 2015
    Date of Patent: January 10, 2017
    Assignee: National Central University
    Inventors: Ching-Cherng Sun, Yeh-Wei Yu, Che-Chu Lin
  • Patent number: 9418429
    Abstract: Disclosed are object recognizing method and apparatus. The method may comprise extracting a feature point of an object to be recognized in an input image; generating a plurality of feature images by extracting orientation information of a region adjacent to the feature point and normalizing the region based in the orientation information; deriving a covariance descriptor based on the feature images; and recognizing the object in the input image by comparing the covariance descriptor with a reference covariance descriptor stored in advance. Thus, the object can be recognized fast and robustly to changes on the size of the input image, rotations of the input image, and illumination, whereby the recognition performance can be enhanced.
    Type: Grant
    Filed: August 1, 2014
    Date of Patent: August 16, 2016
    Assignee: POSTECH ACADEMY—INDUSTRY FOUNDATION
    Inventors: Dai Jin Kim, Jae Sik Yun, In Su Kim
  • Patent number: 8998420
    Abstract: A hologram layer (13) is irradiated by light from an optical element (10). The hologram layer (13) is provided with a first hologram (14) that diffracts in a predetermined direction, from among incident light from the optical element (10), X-polarized light in which the polarization component is in a specific direction and emits the light as X-polarized light of a first phase state (P1), and a second hologram (15) that both diffracts in the same direction as the X-polarized light of the first phase state (P1) and moreover at an equal radiation angle, from among incident light from the optical element (10), Y-polarized light in which the polarization component is in a direction orthogonal to that of the X-polarized light and converts it to X-polarized light, and emits the light as X-polarized light of a second phase state (P2) that differs from the first phase state (P1).
    Type: Grant
    Filed: October 27, 2010
    Date of Patent: April 7, 2015
    Assignee: NEC Corporation
    Inventors: Shin Tominaga, Masao Imai, Goroh Saitoh, Masanao Natsumeda
  • Patent number: 8982437
    Abstract: A hologram recording film manufacturing method includes the steps of obtaining a laminated structure by alternately laminating M (where M?2) photosensitive material precursor layers including a photosensitive material and at least one (M?1) resin layer on one another, obtaining M photosensitive material layers, where at least two interference fringes with a desired pitch and a desired slant angle are formed on each of the M photosensitive material layers, from the M photosensitive material precursor layers by irradiating the laminated structure with a reference laser light beam and an object laser light beam, and making the slant angles of the M photosensitive material layers different from each other while retaining the pitch value, which is defined on a face of the photosensitive material layer, by irradiating the laminated structure with an energy ray from the laminated structure's one face side, and heating the laminated structure.
    Type: Grant
    Filed: December 8, 2009
    Date of Patent: March 17, 2015
    Assignee: Sony Corporation
    Inventors: Mieko Kuwahara, Takuji Yoshida, Katsuyuki Akutsu
  • Patent number: 8964517
    Abstract: An optical system capable of obtaining a high-resolution image using interference and thus capable of providing a stable signal is realized. A particular polarization state of response light emitted from an object is selected, and light in the selected particular polarization state is split into two beams. The split two beams are polarized into two different polarization states. After one of the two beams is subjected to an image inversion, the two beams are condensed such that they interfere with each other. The interfering light is split into a plurality of beams, and each of these beams is detected after they are passed through different polarizing filters. Detected signals are combined together and processed to obtain high-stability amplitude information without being influenced by a phase difference between the two beams.
    Type: Grant
    Filed: January 6, 2012
    Date of Patent: February 24, 2015
    Assignee: Hitachi, Ltd.
    Inventor: Shigeharu Kimura
  • Patent number: 8956786
    Abstract: The invention is concerned with a volume hologram medium obtained by multiple recording of holograms, which is improved in terms of just only security for forgery prevention but also aesthetics. A volume hologram medium 29? comprises a reflection hologram in which a stereoscopic image of a three-dimensional object and an image of a plane pattern of a mask plate are recorded by interference of the same reference light beams having the same angle of incidence and the same wavelength with object light beams having mutually different angles of incidence. The stereoscopic image of the three-dimensional object is reconstructed in the form of diffracted light 31 in a singlecolor and in angle relations close to recording conditions, and the image of a plane pattern of the mask plate is reconstructed as diffracted light 32b, 32?b at various angles of incidence of white illumination light 30 and in different colors depending on those angles of incidence.
    Type: Grant
    Filed: September 6, 2007
    Date of Patent: February 17, 2015
    Assignee: DAI Nippon Printing Co., Ltd.
    Inventor: Daijiro Kodama
  • Patent number: 8953235
    Abstract: A device for producing a security mark on an optical data carrier includes directing means for directing a first and a second light beam onto a hologram area of the optical data carrier, wherein the first and second light beams are coherent light beams. The directing means are adapted to direct the first light beam onto the hologram area along a first direction, and the second light beam onto the hologram area along a second direction. Tilting means are provided for tilting the second direction by a predefined tilt angle with respect to the first direction.
    Type: Grant
    Filed: October 16, 2007
    Date of Patent: February 10, 2015
    Assignee: Thomson Licensing
    Inventors: Joachim Knittel, Hartmut Richter
  • Patent number: 8947495
    Abstract: A telepresence device allows a remote meeting participant to establish a telepresence at a remote meeting location. The telepresence device provides a video image of the remote meeting participant on a video display screen at a meeting location To enhance the visual sensation that the remote person is present at the meeting location, the telepresence device may display the silhouette image of the remote meeting participant without the image of the background scene of the remote participant's location (e.g., office, home or home office). Further, the telepresence device may be equipped with a rear-facing camera that captures a video image of the background scene behind the telepresence device at the meeting location. The silhouette image of the remote meeting participant may be superimposed on the video image of the background scene at the meeting location, which is captured by the rear-facing camera.
    Type: Grant
    Filed: December 5, 2012
    Date of Patent: February 3, 2015
    Assignee: Alcatel Lucent
    Inventors: Zulfiquar Sayeed, James Kotch
  • Publication number: 20150015928
    Abstract: Method of Fast Fourier Transform (FFT) Analysis for collecting waveforms and other vibrational intelligence and modulating or embedding same into one or more coherent reference beams of an n-dimensional holographic recording device for producing one or more holograms of objects, including singularity points in space. The result provides wholesale differentiation of waveforms distinguishable from others based on their spectral characteristics. When said holograms are presented with reference beams of vibrational waveforms having similar characteristics to those which were present during recording of the original objects, phantoms of the original objects or subjects will reconstruct themselves in space with an energy glow of intensity that varies thusly with the degree of similarity between the waveform modulations of the reconstructing wavefronts and those of that same which were used to originally record said objects. Said n-dimensional description space can be sampled of the said glowing phantoms.
    Type: Application
    Filed: July 13, 2013
    Publication date: January 15, 2015
    Inventors: Eric John Dluhos, Bradley Lloyd Wilk
  • Patent number: 8824033
    Abstract: A color photographic hologram system is provided. The reference light wave is incident to the film at a fixed reference beam angle. By adjusting an included angle between the object light wave corresponding to respective monochromatic component images and the reference light wave, the reference light wave and the object light wave are interfered with each other to result in a plurality of interference fringes on the film. When a white light is projected on the film, the reconstructed image shows the color effect.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: September 2, 2014
    Assignee: E-Lon Optronics Co., Ltd.
    Inventor: Ming Tang Yao
  • Patent number: 8817349
    Abstract: A photographic hologram system is provided. The use of an image slicing process and/or the arrangement of half-cylindrical lens in the optical path of an optical light wave and upstream of the film is effective to reduce the times of multiple exposures of the film. As a consequence, the brightness of the reconstructed image is enhanced.
    Type: Grant
    Filed: June 21, 2012
    Date of Patent: August 26, 2014
    Assignee: E-Lon Optronics Co., Ltd.
    Inventor: Ming Tang Yao
  • Patent number: 8804221
    Abstract: A synthetic hologram of a first image consists of an array of coding cells each comprising light and dark portions. A second visible image is superposed to the synthetic hologram, where the light and dark portions of selected coding cells in the second visible image are inverted and have a phase modified by an offset value relative to other coding cells of the rest of the hologram.
    Type: Grant
    Filed: October 4, 2010
    Date of Patent: August 12, 2014
    Assignee: Commissariat a l'Energie Atomique et aux Energies Alternatives
    Inventor: Christophe Martinez
  • Patent number: 8743443
    Abstract: The invention provides a hologram fabrication process, characterized by comprising steps of fabricating a computer-generated hologram (CGH) having amplitude information and phase information recorded by computer operation on a given recording surface, irradiating the computer-generated hologram (CGH) with the first reconstructing illumination light (2) to generate the first diffracted light (3) from the computer-generated hologram (CGH) thereby reconstructing a first reconstruction image (O?), simultaneously entering the first diffracted light (3) and the first reference light (4) in a first-stage hologram recording material (11) faced away from the first reconstructed image to record a first-stage hologram (11) in it, irradiating the recorded first-stage hologram (11) with the second reconstructing illumination light (5) to generate the second diffracted light (6) from the first-stage hologram (11) thereby reconstructing the second reconstruction image (O?), and simultaneously entering the second diffracted
    Type: Grant
    Filed: November 12, 2007
    Date of Patent: June 3, 2014
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tomoko Kumasawa, Makio Kurashige, Mitsuru Kitamura, Masachika Watanabe
  • Patent number: 8715887
    Abstract: A method of making a hologram includes recording a first hologram in a holographic recording medium at a first deformation ratio; changing the first deformation ratio to a second deformation ratio that is different from the first deformation ratio; and recording a second hologram in the holographic recording medium at the second deformation ratio to form a recorded holographic medium.
    Type: Grant
    Filed: July 30, 2010
    Date of Patent: May 6, 2014
    Assignee: Sabic Innovative Plastics IP B.V.
    Inventors: Michael Teruki Takemori, Amitabh Bansal, Andrew A. Burns, Mark Cheverton, Sumeet Jain
  • Patent number: 8703363
    Abstract: A method is described for recording a volume reflection holographic image that is viewable when illuminated by light at a wavelength Wv.
    Type: Grant
    Filed: February 16, 2011
    Date of Patent: April 22, 2014
    Assignee: Sabic Innovative Plastic IP B.V.
    Inventors: Michael T. Takemori, Andrew A. Burns, Mark A. Cheverton, Sumeet Jain, Sora Kim
  • Patent number: 8666195
    Abstract: Methods, systems, and apparatus, including computer programs encoded on a computer storage medium, for graphical overlay object translation. One of the methods includes receiving a first plurality of first feature points, each first feature point being associated with a plurality of feature descriptors and a respective location on the first digital image. The method includes receiving a second plurality of second feature points, each second feature point being associated with a plurality of feature descriptors and a respective location on the second digital image. The method includes determining the translation offset for the second digital image from the first digital image by matching locations of the first feature points with locations of the second feature points without regard to the feature descriptors.
    Type: Grant
    Filed: March 15, 2011
    Date of Patent: March 4, 2014
    Assignee: Google Inc.
    Inventor: Keir B. Mierle
  • Patent number: 8625181
    Abstract: A holographic security device including at least first and second diffractive image generating structures recorded in respective sets of substantially non-overlapping regions of a record medium, the regions of one set being interleaved with regions of the other set, whereby both interleaved regions are substantially non-visible to the unaided eye. The holographic security device generates two or more holographic images viewed from separate and/or overlapping viewing directions around the device and seen by tilting the device, and each particular holographic image in a viewing direction is generated by the diffractive image generating structure associated with one set of interleaved lines. The first diffractive image generating structure has been formed to have a diffuse diffractive replay and the second diffractive image generating structure has been formed to have a non-diffuse or specular diffractive replay.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: January 7, 2014
    Assignee: De La Rue International Limited
    Inventor: Brian Holmes
  • Patent number: 8559777
    Abstract: Provided is an optical modulator that modulates input light with a high frequency and low half-wave voltage. An optical device comprises a substrate; a dielectric film that is formed on the substrate and includes a first optical waveguide and a second optical waveguide that run parallel to each other; an insulating film formed on the dielectric film; a coplanar line that is formed on the insulating film and includes a signal line arranged between the first optical waveguide and the second optical waveguide, a first ground line arranged in a first region, and a second ground line arranged in a second region; and auxiliary electrodes that are arranged in the first region and the second region, are formed in contact with the dielectric film or within the insulating film, and apply bias voltages to the first optical waveguide and the second optical waveguide.
    Type: Grant
    Filed: October 20, 2011
    Date of Patent: October 15, 2013
    Assignee: Advantest Corporation
    Inventors: Hideo Hara, Shin Masuda, Atsushi Seki
  • Patent number: 8497052
    Abstract: An optimal recording exposure is determined by varying in the first to nth stages the recording exposure with a write laser beam to record a bright pattern image and a dark pattern image in each stage as the first to nth bright pattern images and the first to nth dark pattern images, respectively; irradiating the respective pattern images with a read beam to detect the intensity of a diffracted beam from the central portion of each image of the bright and dark patterns; calculating Sa1/Sb1=SNR1, . . . , and San/Sbn=SNRn, where Sa1 to San are the intensity of a diffracted beam from the first to nth bright pattern images and Sb1 to Sbn, are the intensity of s diffracted beam from the first to nth dark pattern images; and determining a recording exposure which is given at the SNRmax being the maximum value of the resulting SNR1 to SNRn.
    Type: Grant
    Filed: March 5, 2012
    Date of Patent: July 30, 2013
    Assignee: TDK Corporation
    Inventors: Jiro Yoshinari, Naoki Hayashida, Shohei Fujii, Kazushi Tanaka
  • Publication number: 20130170007
    Abstract: An optical device 50 including a hologram recording medium 55 that can reproduce an image of a reference member and an irradiation unit that emits a coherent light beam to the optical device 50. The irradiation unit 60 includes a light source for emitting a coherent light beam and a scanning device 65 capable of adjusting a reflection angle of the coherent light beam emitted from the light source and that makes a reflected coherent light beam scan the hologram recording medium. The light source has light sources for emitting coherent light beams having different wavelength ranges. The hologram recording medium 55 has a plurality of recording areas to be scanned with a plurality of coherent light beams reflected by the scanning device 65, respectively. Each of the plurality of recording areas has an interference fringe that diffracts a coherent light beam of the corresponding wavelength range.
    Type: Application
    Filed: September 8, 2011
    Publication date: July 4, 2013
    Applicant: DAI NIPPON PRINTING CO., LTD.
    Inventors: Makio Kurashige, Kazutoshi Ishida, Tomoe Takanokura, Yasuyuki Ooyagi
  • Patent number: 8421849
    Abstract: A lighting control device includes: an irradiation light generation unit that receives an irradiation light signal; coating correcting means for correcting the irradiation light signal so that an irradiation target object can be coated with irradiation light; and an irradiation light projection unit that projects the irradiation light by using the corrected irradiation light signal. The irradiation light includes coating light that coats the irradiation target object, and background light that becomes a background of the irradiation target object. The lighting control device includes: a first coating correction unit that corrects the irradiation light signal so as to cut an outline of the coating light in conformity with a shape of the irradiation target object; and a second coating correction unit that corrects the outline of the coating light in response to a positional relationship between an origin position of the irradiation target object and the irradiation light projection unit.
    Type: Grant
    Filed: July 23, 2008
    Date of Patent: April 16, 2013
    Assignee: Panasonic Corporation
    Inventor: Ryo Kawamura
  • Patent number: 8368743
    Abstract: The invention relates to an interface and circuit arrangement, in particular for transmitting digital image data to at least one holographic encoding unit (HEU), which generates complex hologram values from image data containing depth information and/or encodes the pixel values for controlling at least one light modulator element of a holographic reproduction device. The invention is characterized in that the interface transmits the depth map of the image data and the color map of said image data separately via transmission means (L1, L2) and communication protocols, said depth map comprising the depth information and the color map the color information of scanned images in an image sequence.
    Type: Grant
    Filed: August 31, 2007
    Date of Patent: February 5, 2013
    Assignee: SeeReal Technologies S.A.
    Inventors: Alexander Schwerdtner, Armin Schwerdtner
  • Patent number: 8363323
    Abstract: A security device comprising at least first and second superposed optically variable effect generating structures (3-5, 31-51), each having a surface relief microstructure, the second optically variable effect generating structure being viewable through the first.
    Type: Grant
    Filed: April 3, 2003
    Date of Patent: January 29, 2013
    Assignee: De la Rue International Limited
    Inventor: Brian William Holmes
  • Patent number: 8358454
    Abstract: Disclosed is a display for the holographic reconstruction of a three-dimensional scene using means which allow a reduction of speckle patterns. Speckle patterns result in the graining of a holographic reconstruction and worsen the quality thereof. The 3D scene is incoherently superimposed with itself chronologically or spatially in the eye of the observer. The modulated wave fronts of each reconstructed object point of the scene are shifted relative to themselves in the reconstruction beam path and superimposed in the eye of the observer. The shifting may occur one-dimensionally and two-dimensionally. Each object point is multiplied with itself in the eye of the observer in accordance with the number of the shifted wave fronts. The various speckle patterns over which the eye of the observer averages are also multiplied. Speckle patterns are reduced and the reconstruction quality is thus increased in holographic displays.
    Type: Grant
    Filed: September 15, 2008
    Date of Patent: January 22, 2013
    Assignee: SeeReal Technologies S.A.
    Inventors: Norbert Leister, Grigory Lazarev, Gerald Futterer
  • Patent number: 8339443
    Abstract: A three-dimensional image display method, includes: displaying a three-dimensional image including a left eye image signal and a right eye image signal displayed at a display focus angle; determining whether to change a viewing focus angle with respect to the display focus angle; calculating a pixel distance between the left eye image signal and the right eye image signal if it is determined to change the viewing focus angle; and displaying indicator marks at positions spaced as much as a half of the pixel distance from a center of a screen in leftward and rightward directions.
    Type: Grant
    Filed: December 8, 2011
    Date of Patent: December 25, 2012
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Chan-young Jo
  • Patent number: 8254003
    Abstract: A hologram recording apparatus (300) is provided with: a recording device (100) for recording record information into a hologram recording medium (1); a measuring device (325) for measuring a time elapsed from when the recording of the record information is stopped to when the recording of the record information is restarted; a first controlling device (354) for controlling the recording device to multiplex-record the record information, if the measured elapsed time is shorter than a time length in which the record information can be multiplex-recorded; and a second controlling device (354) for controlling the recording device not to multiplex-record the record information, if the measured elapsed time is longer than the time length in which the record information can be multiplex-recorded.
    Type: Grant
    Filed: April 5, 2011
    Date of Patent: August 28, 2012
    Assignee: Pioneer Corporation
    Inventors: Takeshi Koda, Nobuyuki Takakuwa, Yasuko Fukuda, Kazuo Kuroda
  • Patent number: 8247139
    Abstract: There is provided volume holographic data recording media having a recording layer which is capable of recording interference fringes generated by interference of light having excellent coherence as fringes having different refractive indexes and undergoes holographic data recording by an amount of spatial shift distance of not more than 3 ?m which is smaller than that of conventional media.
    Type: Grant
    Filed: March 28, 2008
    Date of Patent: August 21, 2012
    Assignee: Daikin Industries, Ltd.
    Inventors: Kazuyuki Satou, Kazuko Aoki, Makoto Hanazawa
  • Patent number: 8179579
    Abstract: HROM replication methods, devices or systems are disclosed herein. Also disclosed herein are articles comprising conical reference (reconstruction) beam hologram elements to generate conical or conical like reference (reconstruction) beams which may be used in such HROM replication methods, devices or systems. Further disclosed herein are articles comprising a target medium which may be used in such HROM replication methods, devices or systems.
    Type: Grant
    Filed: May 21, 2008
    Date of Patent: May 15, 2012
    Assignees: InPhase Technologies, Inc., Hitachi, Ltd.
    Inventors: Kevin R. Curtis, Ernest Chuang, Alan Hoskins
  • Patent number: 8169676
    Abstract: An apparatus for reading from and/or writing to holographic storage media is described, and more specifically an apparatus for reading from and/or writing to holographic storage media with two or more reference beams that overlap inside the holographic storage medium for reading and/or writing a single hologram. The two or more reference beams are mutually incoherent during reading and/or writing.
    Type: Grant
    Filed: March 16, 2009
    Date of Patent: May 1, 2012
    Assignee: Thomson Licensing
    Inventors: Frank Przygodda, Joachim Knittel
  • Publication number: 20120062968
    Abstract: Provided is a three-dimensional image projector capable of displaying a highly reproducible three-dimensional image in response to changes in a viewer's position and easily accomplishing system downsizing.
    Type: Application
    Filed: March 1, 2010
    Publication date: March 15, 2012
    Applicants: HolyMine Corporation, National University Corporation TOYOHASHI UNIVERSITY OF TECHNOLOGY
    Inventors: Mitsuteru Inoue, Pang Boey Lim, Hideyoshi Horimai
  • Patent number: 8135219
    Abstract: A method of detecting and compensating fail pixels in a holographic storage system. The method includes steps of: providing a plurality of image frames to show on a data plane for all pixels on the data plane being capable of outputting a light state or a dark state; sequentially recording the image frames into a storage medium; detecting the image frames by using a detecting apparatus for all pixels on the detecting apparatus being capable of outputting sensing signals corresponding to the light state and the dark state; defining a sensing difference value, which is a difference of the sensing signal outputting the light state and the dark state generated by one pixel; comparing the sensing difference value with a threshold value; and defining the corresponding pixel is a fail pixel if the sensing difference value is smaller than the threshold value.
    Type: Grant
    Filed: March 7, 2007
    Date of Patent: March 13, 2012
    Assignee: Lite-On It Corp.
    Inventors: Chia-Yen Chang, Hsin-Ping Cheng
  • Patent number: 8094185
    Abstract: A three-dimensional image display method, includes: displaying a three-dimensional image including a left eye image signal and a right eye image signal displayed at a display focus angle; determining whether to change a viewing focus angle with respect to the display focus angle; calculating a pixel distance between the left eye image signal and the right eye image signal if it is determined to change the viewing focus angle; and displaying indicator marks at positions spaced as much as a half of the pixel distance from a center of a screen in leftward and rightward directions.
    Type: Grant
    Filed: December 7, 2007
    Date of Patent: January 10, 2012
    Assignee: Samsung Electronics Co., Ltd
    Inventor: Chan-young Jo
  • Patent number: 8054519
    Abstract: The present invention discloses a wavelength-multiplex and space-multiplex holographic storage device, which comprises a storage medium, a plurality of signal light beams and at least one reference light beam. The signal light beams have different wavelengths and illuminate the storage medium. The reference light beam illuminates the storage medium and interferes with the signal light beams to form a plurality of interference patterns. The interference patterns are respectively stored on different-depth storage layers of the storage medium. The present invention not only has a high access rate but also has a large storage capacity.
    Type: Grant
    Filed: February 25, 2009
    Date of Patent: November 8, 2011
    Assignee: National Chiao Tung University
    Inventors: Wei-Chia Su, Yeh-Hung Chen, Te-Yuan Chung
  • Patent number: 8049942
    Abstract: A multiplexed holographic recording apparatus records multiplexed holograms in a plurality of recording regions that are formed on a holographic recording medium. In particular, the apparatus first records a predetermined number of multiplexed holograms in each of the recording regions formed in a predetermined range or an overall range of the holographic recording medium through holographic recording performed N times, and then performs the (N+1)th holographic recording in each recording region formed in the predetermined range or the overall range. When n other recording regions (where n=0, 1, 2, . . . ) are superimposed on each recording region formed on the holographic recording medium, a difference in the degree of multiplexing between the recording regions formed in the predetermined range or the overall range of the holographic recording medium does not exceed a predetermined value of n+1.
    Type: Grant
    Filed: October 17, 2006
    Date of Patent: November 1, 2011
    Assignee: Panasonic Corporation
    Inventors: Tomoya Sugita, Ken'ichi Kasazumi
  • Patent number: 7995257
    Abstract: A holographic storage medium includes a hologram including data recorded in a plurality of pages in a superimposed fashion by interference of a signal beam and a reference beam, and an additional page recorded between two adjacent pages in the plurality of pages, wherein a portion of the data is recorded to a region of the additional page having a relatively small selectivity compared to other regions of the additional page without recording on the other regions.
    Type: Grant
    Filed: December 20, 2007
    Date of Patent: August 9, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Taek-seong Jeong
  • Patent number: 7936491
    Abstract: A hologram recording apparatus (300) is provided with: a recording device (100) for recording record information into a hologram recording medium (1); a measuring device (325) for measuring a time elapsed from when the recording of the record information is stopped to when the recording of the record information is restarted; a first controlling device (354) for controlling the recording device to multiplex-record the record information, if the measured elapsed time is shorter than a time length in which the record information can be multiplex-recorded; and a second controlling device (354) for controlling the recording device not to multiplex-record the record information, if the measured elapsed time is longer than the time length in which the record information can be multiplex-recorded.
    Type: Grant
    Filed: October 24, 2006
    Date of Patent: May 3, 2011
    Assignee: Pioneer Corporation
    Inventors: Takeshi Koda, Nobuyuki Takakuwa, Yasuko Fukuda, Kazuo Kuroda
  • Patent number: 7920311
    Abstract: A method and apparatus for recording and/or reproducing data to and/or from a holographic storage medium and a holographic storage medium therefor are provided. The method of reproducing data from the holographic storage medium, in which a hologram containing data is recorded through interference between a signal beam and a reference beam, the data being recorded in pages and a plurality of the pages being recorded in a book, includes controlling the reference beam so that an increasing/decreasing order of a reference beam in a current book which is currently reproduced is reverse to an increasing/decreasing order of a reference beam in a previous book which was reproduced before the current book, and reproducing pages of the current book from the holographic storage medium according to the controlling of the reference beam.
    Type: Grant
    Filed: July 27, 2007
    Date of Patent: April 5, 2011
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Hyun-soo Park
  • Patent number: 7869106
    Abstract: A holographic recording method, a holographic recording apparatus, a holographic recording and reproducing method, a holographic recording and reproducing apparatus, and a holographic recording medium for recording information in an angle multiplex fashion as a hologram in a first format in which either one of signal light and reference light branched out from a laser light source is made to cross the other in a recording layer at a predetermined incidence angle and the incidence angle is changed at a predetermined angular pitch, or in a second format of higher angular selectivity, wherein the incidence angle when recording information in the second format of higher angular selectivity can be adjusted to cover an incidence angle that satisfies the Bragg's condition when recording in the first format, thereby ensuring reproduction compatibility between media of different angular selectivities.
    Type: Grant
    Filed: March 29, 2005
    Date of Patent: January 11, 2011
    Assignee: TDK Corporation
    Inventors: Takuya Tsukagoshi, Tetsuro Mizushima, Jiro Yoshinari, Hideaki Miura
  • Patent number: 7822304
    Abstract: A laser beam multiplexer capable of easily multiplexing a plurality of laser beams is provided. A laser beam multiplexer includes a multiplexing element having a hollow portion with a sectional elliptical shape, in which the multiplexing element includes: a plurality of light-incident apertures guiding laser beams from outside toward one of two focal points of the hollow portion, a reflective layer arranged on a wall surface of the hollow portion, and multiplexing a plurality of incident laser beams while reflecting the plurality of laser beams, and a light-emitting aperture guiding laser beams multiplexed by the reflective layer toward outside.
    Type: Grant
    Filed: April 14, 2009
    Date of Patent: October 26, 2010
    Assignee: Sony Corporation
    Inventor: Shoji Hirata
  • Patent number: 7813017
    Abstract: A method and system is disclosed for increasing the holographic storage capacity of a holographic recording medium using an irradiance-tailoring (e.g., optical) element by changing the irradiance profile of the modulated object beam (e.g., by imparting motion to an irradiance-tailoring element and/or the holographic recording medium and/or by reconfiguring (e.g., periodically) the phase profile of a stationary irradiance-tailoring (e.g., optical) element) to minimize the effects of fixed-pattern noise buildup from occurring in the holographic recording medium.
    Type: Grant
    Filed: December 29, 2005
    Date of Patent: October 12, 2010
    Assignee: InPhase Technologies, Inc.
    Inventors: Benjamin C. Ihas, Samuel Paul Weaver, Ken E. Anderson, Aaron Wegner
  • Patent number: 7808687
    Abstract: A hologram reconstructing apparatus is disclosed. The apparatus includes: unnecessary light removing means for causing the imaging means to receive necessary light only included in the reconstruction light; driving means for operating the hologram recording medium or a reconstruction light optical system; light detecting means for detecting the state that reconstruction light is projected to the unnecessary light removing means of the light cut by the unnecessary light removing means; and control means for obtaining the displacement of the hologram recording medium based on the information on a specific part of the projection state information detected by the light detecting means and controlling the driving means to cancel the displacement and move the hologram recording medium or the optical system.
    Type: Grant
    Filed: October 2, 2007
    Date of Patent: October 5, 2010
    Assignee: Sony Corporation
    Inventors: Kunihiko Hayashi, Nobuhiro Kihara, Hisayuki Yamatsu, Norihiro Tanabe
  • Patent number: 7804633
    Abstract: A hologram recording film has an image of a three-dimensional object, e.g. a three-dimensional model, recorded in a volume hologram photosensitive material and further has a hologram image of a plane color pattern, e.g. a character or an image, together with the shadow of the color pattern, recorded as individual information in a superimposed manner in the same photosensitive material without using a liquid crystal display. Pieces of plane additional information of the same pattern have been recorded so as to be capable of being reconstructed simultaneously in a hologram plane and in front of or behind the hologram plane, respectively, in superimposition with a reconstructed image from a volume hologram.
    Type: Grant
    Filed: July 18, 2002
    Date of Patent: September 28, 2010
    Assignee: Dai Nippon Printing Co., Ltd.
    Inventors: Tsuyoshi Kashiwagi, Daijiro Kodama
  • Patent number: 7800802
    Abstract: A hologram recording medium including a substrate, a hologram recording layer that records an interference pattern formed by a first wavelength beam, a wavelength selecting reflection layer provided between the substrate and the hologram recording layer that reflects the first wavelength beam and transmits a second wavelength beam, a beam absorbing layer provided between the substrate and the wavelength selecting reflection layer that absorbs the first wavelength beam, and an information layer provided between the substrate and the light absorbing layer in which information is recorded and reproduced by the second wavelength beam, a second information layer provided between the substrate and the information layer and a second wavelength selecting reflection layer provided between the information layer and the second information layer that reflects the second wavelength beam and transmits a third wavelength beam.
    Type: Grant
    Filed: April 7, 2005
    Date of Patent: September 21, 2010
    Assignee: Optware Corporation
    Inventors: Yawara Kaneko, Hideyoshi Horimai