Patents by Inventor Yoshiaki Horikawa

Yoshiaki Horikawa has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 10534317
    Abstract: A display method lets a display beam to propagate in a transparent substrate while internally reflected repeatedly and lets the display beam partly emit out of the transparent substrate every time the display beam is internally reflected, thereby emitting display beams from almost entirety of a surface of the transparent substrate. The display beam is produced holographically. A display apparatus includes a spatial phase modulator that produces a display beam, a transparent substrate in which the display beam is internally reflected repeatedly to propagate in it, and a splitter that lets the display beam partly emit out of the transparent substrate every time the display beam is internally reflected.
    Type: Grant
    Filed: March 26, 2018
    Date of Patent: January 14, 2020
    Assignee: OLYMPUS CORPORATION
    Inventor: Yoshiaki Horikawa
  • Publication number: 20180217555
    Abstract: A display method lets a display beam to propagate in a transparent substrate while internally reflected repeatedly and lets the display beam partly emit out of the transparent substrate every time the display beam is internally reflected, thereby emitting display beams from almost entirety of a surface of the transparent substrate. The display beam is produced holographically. A display apparatus includes a spatial phase modulator that produces a display beam, a transparent substrate in which the display beam is internally reflected repeatedly to propagate in it, and a splitter that lets the display beam partly emit out of the transparent substrate every time the display beam is internally reflected.
    Type: Application
    Filed: March 26, 2018
    Publication date: August 2, 2018
    Inventor: Yoshiaki Horikawa
  • Patent number: 9946080
    Abstract: There is provided a practically useful display method that allows viewers to see in-focus images easily. The method includes the steps of providing a lens array including a plurality of lenses, providing display areas at least one of which corresponds to each of the plurality of lenses, displaying partial images of an original image in the display areas respectively, the partial images being different from one another but partially including a same image portion, forming a bundle of beams by beams respectively emergent from the plurality of lenses equivalently, forming virtual images of the respective partial images displayed in the respective display areas by the respective lenses, and forming a single virtual image by superposing the virtual images of the partial images displayed in the respective corresponding display areas formed by the plurality of lenses.
    Type: Grant
    Filed: November 8, 2016
    Date of Patent: April 17, 2018
    Assignee: OLYMPUS CORPORATION
    Inventors: Yoshiaki Horikawa, Toshiaki Suzuki
  • Patent number: 9843778
    Abstract: Provided is an image display device including: a light source part (200) for emitting coherent light; and a plurality of phase shift elements (301) arranged in two-dimensional directions, the device further including a phase shift part (300) for scanning the wavefront of the coherent light from the light source part (200) in two-dimensional directions, in which light is scanned in the two-dimensional directions by a phased array to thereby allow an observer to observe an image.
    Type: Grant
    Filed: February 3, 2016
    Date of Patent: December 12, 2017
    Assignee: OLYMPUS CORPORATION
    Inventors: Yoshiaki Horikawa, Eiji Yamamoto, Kanto Miyazaki
  • Publication number: 20170052380
    Abstract: There is provided a practically useful display method that allows viewers to see in-focus images easily. The method includes the steps of providing a lens array including a plurality of lenses, providing display areas at least one of which corresponds to each of the plurality of lenses, displaying partial images of an original image in the display areas respectively, the partial images being different from one another but partially including a same image portion, forming a bundle of beams by beams respectively emergent from the plurality of lenses equivalently, forming virtual images of the respective partial images displayed in the respective display areas by the respective lenses, and forming a single virtual image by superposing the virtual images of the partial images displayed in the respective corresponding display areas formed by the plurality of lenses.
    Type: Application
    Filed: November 8, 2016
    Publication date: February 23, 2017
    Applicant: OLYMPUS CORPORATION
    Inventors: Yoshiaki HORIKAWA, Toshiaki SUZUKI
  • Publication number: 20160378062
    Abstract: Hologram data is generated by dividing hologram data generation area, in which hologram data is generated, into a plurality of element sub-areas, computing base hologram data that pertains to an area smaller than the hologram data generation area and that is to form an optical wavefront of an image to be reconstructed, and assigning, as hologram data of the element sub-areas4, hologram data of an entirety or a part of the area to which the base hologram data pertains. Consequently, the amount of operations for generating a hologram pattern in holographic display is reduced.
    Type: Application
    Filed: September 6, 2016
    Publication date: December 29, 2016
    Applicant: OLYMPUS CORPORATION
    Inventors: Daichi WATANABE, Yoshiaki HORIKAWA
  • Publication number: 20160349508
    Abstract: A display apparatus includes a spatial phase modulator that forms a display light beam, a transparent substrate in which the display light beam propagates by repeated internal reflection, a bifurcation that emits a portion of the display light beam outside the transparent substrate each time the display light beam undergoes the internal reflection, and a light beam introduction optical system including a beam splitter that guides an illumination light beam to the spatial phase modulator and guides the display light beam formed by the spatial phase modulator to the transparent substrate. The spatial phase modulator forms the display light beam holographically by diffraction of the illumination light beam.
    Type: Application
    Filed: August 9, 2016
    Publication date: December 1, 2016
    Applicant: OLYMPUS CORPORATION
    Inventor: Yoshiaki HORIKAWA
  • Publication number: 20160156885
    Abstract: Provided is an image display device including: a light source part (200) for emitting coherent light; and a plurality of phase shift elements (301) arranged in two-dimensional directions, the device further including a phase shift part (300) for scanning the wavefront of the coherent light from the light source part (200) in two-dimensional directions, in which light is scanned in the two-dimensional directions by a phased array to thereby allow an observer to observe an image.
    Type: Application
    Filed: February 3, 2016
    Publication date: June 2, 2016
    Inventors: Yoshiaki Horikawa, Eiji Yamamoto, Kanto Miyazaki
  • Publication number: 20150241844
    Abstract: A display method lets a display beam to propagate in a transparent substrate while internally reflected repeatedly and lets the display beam partly emit out of the transparent substrate every time the display beam is internally reflected, thereby emitting display beams from almost entirety of a surface of the transparent substrate. The display beam is produced holographically. A display apparatus includes a spatial phase modulator that produces a display beam, a transparent substrate in which the display beam is internally reflected repeatedly to propagate in it, and a splitter that lets the display beam partly emit out of the transparent substrate every time the display beam is internally reflected.
    Type: Application
    Filed: March 4, 2015
    Publication date: August 27, 2015
    Inventor: Yoshiaki Horikawa
  • Patent number: 8891030
    Abstract: A display method of forming an image by using a plurality of pixels includes projecting light beams from the plurality of pixels on a pupil of an eye of an observer, and each diameter of the light beams which are incident on the pupil is smaller than a diameter of the pupil. Moreover, a display apparatus which displays an image having a plurality of pixels includes a micro lens array having a lens corresponding to each pixel, and a plurality of light exit points is formed corresponding to each pixel. Furthermore, an electronic equipment has the display apparatus installed thereon.
    Type: Grant
    Filed: April 5, 2012
    Date of Patent: November 18, 2014
    Assignee: Olympus Corporation
    Inventor: Yoshiaki Horikawa
  • Patent number: 8619367
    Abstract: In a display which includes a plurality of light exit point groups, and a plurality of lenses which project the plurality of light exit point groups, the light exit point group includes at least one light exit point, and each lens is disposed such that an image of the light exit point group is projected to be overlapped, and projected images of the plurality of lenses are formed on a pupil of an eye of an observer by making overlapping of light exit points in the light exit point group which have been overlapped upon being projected by the lenses, incident on a pupil of the eye of the observer.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: December 31, 2013
    Assignee: Olympus Corporation
    Inventor: Yoshiaki Horikawa
  • Patent number: 8525957
    Abstract: In a display apparatus which includes a liquid crystal layer, two electrode layers which sandwich the liquid crystal layer, and a black matrix, and the black matrix has a plurality of light exit points which transmit light, and a light exit point group includes at least one light exit point, and the display apparatus has a plurality of lenses which project the light exit point group, and the plurality of lenses project images of the light exit point groups to be overlapped, and projected images of the plurality of lenses are formed on a retina of an eye of an observer by inducing overlapping of light exit points in the light exit point group which have been overlapped upon being projected by the lenses, on a pupil of the eye of the observer.
    Type: Grant
    Filed: March 29, 2011
    Date of Patent: September 3, 2013
    Assignee: Olympus Corporation
    Inventor: Yoshiaki Horikawa
  • Publication number: 20120200810
    Abstract: A display method of forming an image by using a plurality of pixels includes projecting light beams from the plurality of pixels on a pupil of an eye of an observer, and each diameter of the light beams which are incident on the pupil is smaller than a diameter of the pupil. Moreover, a display apparatus which displays an image having a plurality of pixels includes a micro lens array having a lens corresponding to each pixel, and a plurality of light exit points is formed corresponding to each pixel. Furthermore, an electronic equipment has the display apparatus installed thereon.
    Type: Application
    Filed: April 5, 2012
    Publication date: August 9, 2012
    Inventor: Yoshiaki Horikawa
  • Patent number: 8238019
    Abstract: The present invention discloses a projection apparatus comprising: a light source for emitting illumination light; a mirror device comprising a plurality of mirrors for generating an image by reflecting the illumination light toward a projecting direction by means of a deflecting operation; and a projection optical system which is placed in the optical axis of reflection light in the projecting direction of the illumination light incident to the mirror device and which projects the reflection light, wherein the optical axis of the illumination light incident to the mirror device and the optical axis of the reflection light in the projecting direction forms an angle that is larger than the expansion angle ? of the flux of the illumination light that satisfies NA=n*sin ?, where NA is the numerical aperture of the flux of the illumination light, and n is the reflectance.
    Type: Grant
    Filed: September 5, 2008
    Date of Patent: August 7, 2012
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Taro Endo, Yoshihiro Maeda, Hirotoshi Ichikawa, Yoshiaki Horikawa, Fusao Ishii
  • Publication number: 20120195519
    Abstract: There is provided a method of generating corrected image data and a display apparatus which is capable of displaying a pre-corrected image which is corrected in advance, which enables to carry out diopter adjustment for farsightedness due to old age at a practically sufficient level. In the method of generating corrected image data, the pre-corrected image data consists of amplitude information and phase information, is generated. The display apparatus includes a processing section which generates the pre-corrected image data consists of the amplitude information and the phase information, by a predetermined method of generating corrected image data, and a display section which controls and displays the amplitude information and the phase information of the corrected image data which has been generated.
    Type: Application
    Filed: April 10, 2012
    Publication date: August 2, 2012
    Inventor: Yoshiaki Horikawa
  • Publication number: 20110317272
    Abstract: In a display which includes a plurality of light exit point groups, and a plurality of lenses which project the plurality of light exit point groups, the light exit point group includes at least one light exit point, and each lens is disposed such that an image of the light exit point group is projected to be overlapped, and projected images of the plurality of lenses are formed on a pupil of an eye of an observer by making overlapping of light exit points in the light exit point group which have been overlapped upon being projected by the lenses, incident on a pupil of the eye of the observer.
    Type: Application
    Filed: March 14, 2011
    Publication date: December 29, 2011
    Inventor: Yoshiaki Horikawa
  • Publication number: 20110285936
    Abstract: In a display apparatus which includes a liquid crystal layer, two electrode layers which sandwich the liquid crystal layer, and a black matrix, and the black matrix has a plurality of light exit points which transmit light, and a light exit point group includes at least one light exit point, and the display apparatus has a plurality of lenses which project the light exit point group, and the plurality of lenses project images of the light exit point groups to be overlapped, and projected images of the plurality of lenses are formed on a retina of an eye of an observer by inducing overlapping of light exit points in the light exit point group which have been overlapped upon being projected by the lenses, on a pupil of the eye of the observer.
    Type: Application
    Filed: March 29, 2011
    Publication date: November 24, 2011
    Inventor: Yoshiaki Horikawa
  • Patent number: 8061854
    Abstract: The present invention provides a projection apparatus, comprising: a light source; at least one spatial light modulator for modulating illumination light from the light source by a plurality of pixel elements by using different modulation states; a light source control unit performing a modulation control of the light source; and a spatial light modulator control unit generating, from an input image signal, a control signal for driving the spatial light modulator, wherein: the light source control unit has a function of receiving data corresponding to the control signal generated by the spatial light modulator control unit, controlling a parameter of an emission pulse of the illumination light emitted from the light source, and thereby adjusting an emission intensity of the illumination light.
    Type: Grant
    Filed: September 4, 2008
    Date of Patent: November 22, 2011
    Assignees: Silicon Quest Kabushiki-Kaisha, Olympus Corporation
    Inventors: Akira Shirai, Hirokazu Nishino, Yoshiaki Horikawa, Fusao Ishii
  • Patent number: 8045244
    Abstract: Video image data is converted into spatial frequency information using Fourier transformation. The spatial frequency information is provided to an information display unit. The spatial frequency information as a phase distribution is displayed on the information display unit, light is irradiated onto the information display unit using a light source, and the amount of light that is irradiated by the light source is adjusted based on the video image data. And diffraction light, which is irradiated by the light source and modulated as the spatial frequency information by the information display unit, is projected onto a projecting unit.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: October 25, 2011
    Assignee: Olympus Corporation
    Inventor: Yoshiaki Horikawa
  • Patent number: 7976170
    Abstract: According to the present invention, a plurality of video image data are converted into individual spatial frequency information using Fourier transformation. The individual spatial frequency information is provided to a plurality of information display unit corresponding to the individual spatial frequency information. The spatial frequency information corresponding to the plurality of video image data is displayed on the plurality of information display unit, light is irradiated onto the plurality of information display unit using a plurality of light sources corresponding to the plurality of information display unit. The spatial frequency information that is displayed by the plurality of information display unit is projected by using diffraction light, and a plurality of video images are synthesized on projection surfaces.
    Type: Grant
    Filed: December 22, 2008
    Date of Patent: July 12, 2011
    Assignee: Olympus Corporation
    Inventor: Yoshiaki Horikawa