Superimposed Holograms Only Patents (Class 359/24)
  • Patent number: 11907783
    Abstract: A hologram detection method according to an aspect of the disclosure, includes: inputting a first image, obtained by capturing a detection object on the basis of first flash intensity, to a neural network model to obtain a first detection result value representing the detection or not of a hologram for each of predetermined at least one detection unit regions; and comparing a threshold value with the first detection result value obtained for each detection unit region to determine the detection or not of a hologram in the first image and a first detection unit region where a hologram is detected.
    Type: Grant
    Filed: March 8, 2023
    Date of Patent: February 20, 2024
    Assignee: KAKAOBANK CORP.
    Inventor: Dong Yul Lee
  • Patent number: 11894035
    Abstract: A holographic data storage system comprises an emitter system, a holographic recording medium, and an input waveguide network formed of one or more multimode optical waveguides. The holographic recording medium has multiple recording regions, each optically coupled to a corresponding one of multiple out-coupling regions of the input waveguide network, the holographic data storage system arranged to persistently write data of an input beam, received at any one of the out-coupling regions, to the corresponding recording region. A controller is coupled to at least one of the emitter system and at least one controllable guiding element of the input waveguide network and controls at least one optical characteristic of the input beam or the at least one guiding element, so as to guide the input beam from an in-coupling region to any selected one of the multiple out-coupling regions. Similar waveguide networks are provided for carrying reference and output beams.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: February 6, 2024
    Assignee: Microsoft Technology Licensing, LLC.
    Inventors: Douglas James Kelly, Benn Charles Thomsen, Dushyanth Narayanan, Antony Ian Taylor Rowstron, Andreas Georgiou
  • Patent number: 11835721
    Abstract: The invention relates to a display device for representing two-dimensional and/or three-dimensional objects or scenes. The display device comprises at least one illumination device for emitting sufficiently coherent light, at least one spatial light modulation device for modulating incident light, and at least one optical system. The at least one optical system is provided for multiple imaging of the at least one spatial light modulation device and for generating virtual viewing windows in accordance with the number of images of the at least one spatial light modulation device. The individual images of the at least one spatial light modulation device are combined with one another as segments and form a field of view. The field of view comprises at least one high-resolution holographic segment and at least one low-resolution holographic segment.
    Type: Grant
    Filed: October 17, 2018
    Date of Patent: December 5, 2023
    Assignee: SEEREAL TECHNOLOGIES S.A.
    Inventors: Norbert Leister, Bo Kroll
  • Patent number: 11815856
    Abstract: A method for optimally producing a holographic image using a Holographic Optical Element (HOE) and the HOE meant for controlling directions and divergences of light beams to impart system compactness. The system uses concave and convex lenses and other beam expanding, splitting, modulating and combining optics for realization of compactness and high throughput. The thin laser beam is split using a holographic optical element and a conventional beam splitter. A neutral density filter adjusts the intensity of a reference beam to match the intensity of an object beam so that high quality digital holograms can be recorded. Effects of vibrations are minimized by the compact optical design, by anti-vibration mounts, by mounting all the opto-mechanical components on a single rigid platform and by enclosing the system. An electro-optical sensor array records holograms digitally and an algorithm numerically reconstructs and further quantifies the results using a personal computer/laptop/tablet etc.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: November 14, 2023
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Raj Kumar, Gaurav Dwivedi, Omendra Singh
  • Patent number: 11703799
    Abstract: Holographic volume gratings in waveguide cells can be recorded using many different methods and systems in accordance with various embodiments of the invention. One embodiment includes a holographic recording system including at least one laser source configured to emit recording beams and a movable platform configured to move between a first position and a second position, wherein when the movable platform is in the first position, the at least one laser source is configured to emit a first set of one or more recording beams toward a first set of one or more stations and when the movable platform is in the second position, the at least one laser source is configured to emit a second set of one or more recording beams toward a second set of one or more stations.
    Type: Grant
    Filed: July 21, 2020
    Date of Patent: July 18, 2023
    Assignee: DigiLens Inc.
    Inventors: Jonathan David Waldern, Alastair John Grant, Milan Momcilo Popovich, Ratson Morad, Sean Michael Williams
  • Patent number: 11630419
    Abstract: A device for producing an edge-lit-hologram having a light source, in particular a laser light source, for generating a light beam, optical splitter for splitting the light beam generated by the light source into an object beam and a reference beam, imprinter for imprinting computer-generated information pertaining to the edge-lit-hologram to the object, optics for overlapping the object beam and the reference beam on or in a photosensitive recording medium for imprinting the edge-lit-hologram, where the optics include at least one transparent body through which the reference beam enters the photosensitive recording medium during operation of the device. The at least one transparent body shaped and disposed in the device such that the reference beam enters the body at an angle of less than 10° to the normal on the surface of the body or enters the body perpendicular to the surface of the body.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: April 18, 2023
    Assignee: Hella GmbH & Co. KGaA
    Inventors: Markus Giehl, Fabian Schueler
  • Patent number: 11625003
    Abstract: A holographic imaging system may include an optical source configured to output a source beam, a splitter configured to split the source beam into a reference beam and an object beam that is incident on a target to form a scattered object beam, and a pre-filter comprising a telecentric lens and a spatial filter. The pre-filter may be configured to receive the scattered object beam and filter diffuse light from the scattered object beam to form a filtered scattered object beam. The system may also include a combiner configured to combine the filtered scattered object beam with the reference beam to form an interference beam, and an imaging array configured to receive the interference beam and generate raw holographic data based on the interference beam.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: April 11, 2023
    Assignee: The Johns Hopkins University
    Inventors: David W. Blodgett, Carissa L. Rodriguez, Austen T. Lefebvre, Eyal Bar-Kochba, Nicole E. Steiner
  • Patent number: 11573424
    Abstract: An optical device includes a stack of multiple grating structures, each of which includes a plurality of sublayers of liquid crystal material. Each sublayer of liquid crystal material includes laterally extending repeating units, each formed of a plurality of liquid crystal molecules. The repeating units of the liquid crystal layers are lateral offset from one another, and defined a tilt angle. The grating structures forming the stack of grating structure have tilt angles of different magnitudes. The grating structures may be configured to redirect light of visible or infrared wavelengths. Advantageously, the different tilt angles of the stack of grating structures allows for highly efficient diffraction of light incident on the grating structures at a wide range of incident angles.
    Type: Grant
    Filed: September 2, 2021
    Date of Patent: February 7, 2023
    Assignee: Magic Leap, Inc.
    Inventor: Chulwoo Oh
  • Patent number: 11543772
    Abstract: A method for optimally producing a holographic image using a Holographic Optical Element (HOE) and the HOE meant for controlling directions and divergences of light beams to impart system compactness. The system uses concave and convex lenses and other beam expanding, splitting, modulating and combining optics for realization of compactness and high throughput. The thin laser beam is split using a holographic optical element and a conventional beam splitter. A neutral density filter adjusts the intensity of a reference beam to match the intensity of an object beam so that high quality digital holograms can be recorded. Effects of vibrations are minimized by the compact optical design, by anti-vibration mounts, by mounting all the opto-mechanical components on a single rigid platform and by enclosing the system. An electro-optical sensor array records holograms digitally and an algorithm numerically reconstructs and further quantifies the results using a personal computer/laptop/tablet etc.
    Type: Grant
    Filed: June 25, 2020
    Date of Patent: January 3, 2023
    Assignee: COUNCIL OF SCIENTIFIC AND INDUSTRIAL RESEARCH
    Inventors: Raj Kumar, Gaurav Dwivedi, Omendra Singh
  • Patent number: 11536655
    Abstract: Diffraction-based imaging systems are described. Aspects of the technology relate to imaging systems having one or more sensors inclined at angles with respect to a sample plane. In some cases, multiple sensors may be used that are, or are not, inclined at angles. The imaging systems may have no optical lenses and are capable of reconstructing microscopic images of large sample areas from diffraction patterns recorded by the one or more sensors. Some embodiments may reduce mechanical complexity of a diffraction-based imaging system. A diffractive imaging system comprises a light source, a sample support configured to hold a sample along a first plane, and a first sensor comprising a plurality of pixels disposed in a second plane that is tilted at an inclined angle relative to the first plane. The first sensor is arranged to record diffraction images of the light source from the sample.
    Type: Grant
    Filed: February 17, 2021
    Date of Patent: December 27, 2022
    Assignee: Path AI, Inc.
    Inventors: Justin Lee, Hsiou-Yuan Liu, Bikram Yonjan, Bo Yang Yu, Yibo Zhang
  • Patent number: 11520143
    Abstract: A display device for a vehicle includes: a first display device including a reflection type hologram that is disposed on a windshield of a vehicle, and a first projection part that projects first display light toward the hologram, and displaying a first display image by diffraction light diffracted by the hologram; and a second display device including a second projection part that projects second display light toward the windshield, and displaying a second display image by reflection light reflected by the windshield. In the windshield, a first region where the first display light is incident and a second region where the second display light is incident overlap with each other, the second projection part includes a filter part that cuts light in a predetermined wavelength region from the second display light, and the predetermined wavelength region is a wavelength region of the light diffracted by the hologram.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: December 6, 2022
    Assignee: YAZAKI CORPORATION
    Inventors: Takuma Ogisu, Kunimitsu Aoki
  • Patent number: 11513363
    Abstract: A speckle elimination apparatus, a laser light source and a laser projection system, the speckle elimination apparatus comprising a wave plate (100) and a transmission plate (200) respectively arranged on a laser beam light path, the wave plate (100) and the transmission plate (200) having similar refractive indices and closely arranged adjacent sides, the wave plate (100) being arranged so that an incident surface allows a portion of an incident laser beam to pass through, the transmission plate (200) being arranged so that an incident surface allows the remainder of the incident laser beam to pass through, the portion of the incident laser beam being 25%-75% of the incident laser beam. The speckle elimination apparatus eliminates the phenomenon of laser speckle, and prevents stray light from being produced during laser speckle elimination.
    Type: Grant
    Filed: December 8, 2017
    Date of Patent: November 29, 2022
    Assignee: GOERTEK INC.
    Inventor: Lebao Yang
  • Patent number: 11499815
    Abstract: Methods, systems and computer program products for performing visual quality assessment using holographic interferometry are provided. Aspects include obtaining a reference holographic pattern based on a reference object and obtaining a test holographic pattern based on a test object. Aspects also include creating an interference pattern by superimposing the test holographic pattern onto the reference holographic pattern. Aspects further include determining a difference between the reference object and the test object based upon the interference pattern.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: November 15, 2022
    Assignee: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventor: Eric V. Kline
  • Patent number: 11467402
    Abstract: A vehicular display device includes a reflection-type hologram disposed inside a windshield of a vehicle and a projection device that projects display light toward the hologram. The hologram outputs the display light from the projection device as diffracted light that travels toward the eye range of the vehicle. The projection device is arranged such that display light reflected off the windshield travels in a direction different, from the direction toward the eye range in a vehicle width direction.
    Type: Grant
    Filed: September 2, 2020
    Date of Patent: October 11, 2022
    Assignee: YAZAKI CORPORATION
    Inventors: Takuma Ogisu, Kunimitsu Aoki, Yoshiyuki Furuya
  • Patent number: 11435582
    Abstract: First and second diffractive reflective elements form an optical path that guides a display light from a display unit toward a projection portion. The first diffractive reflective element is placed on the optical path to reflect the display light toward the projection portion by causing diffraction such that an incident angle and an emission angle of the display light are different from each other. The second diffractive reflective element is placed between the display unit and the first diffractive reflective element on the optical path to reflect the display light from the display unit toward the first diffractive reflective element by causing diffraction such that an incident angle and an emission angle of the display light are different from each other.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: September 6, 2022
    Assignee: DENSO CORPORATION
    Inventors: Kazuhisa Onda, Hiroshi Ando
  • Patent number: 11391949
    Abstract: Provided is a display method for displaying an image based on a color original image. The display method includes guiding an image light corresponding to the color original image to a display position by an optical system, and deflecting a traveling direction of the image light to an observer and performing display by a diffraction optical element. At the time of displaying the color original image, the image light entering the first diffraction optical element includes a light entering at a first angle and a light entering at a second angle that is larger than the first angle, a chromaticity range of the image of the color original image at a position corresponding to the light entering at the first angle is limited to be close to a chromaticity range of the light entering at the second angle.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: July 19, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Toshiyuki Noguchi
  • 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