Patents by Inventor Tatsuru Kobayashi

Tatsuru Kobayashi 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: 9651795
    Abstract: An image display device includes: a light source that emits a beam having a spreading angle in a first direction and a spreading angle in a second direction, which is smaller than the spreading angle in the first direction, in a direction perpendicular to the first direction; an afocal optical system member that has a focal point and changes the beam emitted by the light source into a parallel beam; an anisotropic diffusion plate that is arranged at the focal point and that widens at least the spreading angle in the second direction; a vibration unit that vibrates the anisotropic diffusion plate; a fly-eye lens array on which the parallel beam emitted from the afocal optical system member becomes incident; an image display element that modulates the beam that has passed through the fly-eye lens array into image display light.
    Type: Grant
    Filed: January 15, 2015
    Date of Patent: May 16, 2017
    Assignee: JVC KENWOOD Corporation
    Inventor: Tatsuru Kobayashi
  • Patent number: 9423681
    Abstract: A beam, expansion unit is configured to expand a beam of laser light emitted from a laser light source into an ellipse. A beam irradiation position moving unit is configured to translate a mirror by a driving unit to sequentially move the laser light expanded into the ellipse on the surface of an integrator in a minor-axis direction of the ellipse. A reflective liquid crystal device is configured to modulate the laser light. A projection lens is configured to project the laser light modulated by the reflective liquid crystal device.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: August 23, 2016
    Assignee: JVC KENWOOD CORPORATION
    Inventors: Kazutaka Aboshi, Motoshi Tohda, Tatsuru Kobayashi
  • Publication number: 20160147074
    Abstract: An image display apparatus includes an image projection unit that projects image display light, an intermediate image forming unit that forms a real image based on the image display light projected from the image projection unit, and a projection mirror that reflects the image display light, which has passed through the intermediate image forming unit, toward the surface for presenting a virtual image. The intermediate image forming unit has a first means that controls the direction of a chief ray of the image display light, which has passed through the intermediate image forming unit, and a second means that controls the light distribution angle of the chief ray.
    Type: Application
    Filed: February 1, 2016
    Publication date: May 26, 2016
    Inventors: Tatsuru KOBAYASHI, Manabu KOBAYASHI
  • Patent number: 9258515
    Abstract: An image display device includes: an image generation unit that generates image display light based on an image signal; a projection unit that projects the image display light generated by the image generation unit; a combiner that presents the image display light projected by the projection unit as a virtual image; and a rotating unit that rotationally moves the combiner along at least one rotation surface, wherein the projection unit changes a direction in which the image display light is projected based on the rotational movement of the combiner.
    Type: Grant
    Filed: September 3, 2014
    Date of Patent: February 9, 2016
    Assignee: JVC KENWOOD Corporation
    Inventors: Motoshi Tohda, Isao Kaneno, Yuji Tanaka, Tatsuya Sato, Tatsuru Kobayashi, Manabu Kobayashi
  • Patent number: 9182609
    Abstract: An integrator includes a plurality of rectangular lens cells arranged in a direction x and a direction y. Laser light emitted from a laser source is projected onto an integrator. A beam irradiation position moving unit is configured to cause the laser light to scan the surface of the integrator in the directions x and y so that the laser light is sequentially projected onto a plurality of lens cells. A reflective liquid crystal device is configured to modulate the laser light emitted from the integrator. A projection lens is configured to project the laser light modulated by the reflective liquid crystal device.
    Type: Grant
    Filed: July 22, 2014
    Date of Patent: November 10, 2015
    Assignee: JVC KENWOOD CORPORATION
    Inventors: Kazutaka Aboshi, Motoshi Tohda, Tatsuru Kobayashi
  • Publication number: 20150124227
    Abstract: An image display device includes: a light source that emits a beam having a spreading angle in a first direction and a spreading angle in a second direction, which is smaller than the spreading angle in the first direction, in a direction perpendicular to the first direction; an afocal optical system member that has a focal point and changes the beam emitted by the light source into a parallel beam; an anisotropic diffusion plate that is arranged at the focal point and that widens at least the spreading angle in the second direction; a vibration unit that vibrates the anisotropic diffusion plate; a fly-eye lens array on which the parallel beam emitted from the afocal optical system member becomes incident; an image display element that modulates the beam that has passed through the fly-eye lens array into image display light.
    Type: Application
    Filed: January 15, 2015
    Publication date: May 7, 2015
    Inventor: Tatsuru KOBAYASHI
  • Publication number: 20140368922
    Abstract: A display device for a vehicle includes: a substrate housing portion that stores a circuit substrate that outputs an image signal of an image to be displayed; an optical unit that generates and projects an image based on the image signal; and a combiner on which the image is projected, wherein the optical unit has: an optical unit main body that includes a light source and an image display element; and a projection unit that determines a projection direction, wherein the optical unit main body has a first main body surface and a second main body surface, and wherein the projection unit has two arrangement states: a first state where a projection port of the projection unit is on the side of the first main body surface; and a second state where the projection port is on the side of the second main body surface.
    Type: Application
    Filed: September 3, 2014
    Publication date: December 18, 2014
    Inventors: Motoshi Tohda, Isao Kaneno, Yuji Tanaka, Tatsuya Sato, Tatsuru Kobayashi, Manabu Kobayashi
  • Publication number: 20140368745
    Abstract: An image display device includes: an image generation unit that generates image display light based on an image signal; a projection unit that projects the image display light generated by the image generation unit; a combiner that presents the image display light projected by the projection unit as a virtual image; and a rotating unit that rotationally moves the combiner along at least one rotation surface, wherein the projection unit changes a direction in which the image display light is projected based on the rotational movement of the combiner.
    Type: Application
    Filed: September 3, 2014
    Publication date: December 18, 2014
    Inventors: Motoshi Tohda, Isao Kaneno, Yuji Tanaka, Tatsuya Sato, Tatsuru Kobayashi, Manabu Kobayashi
  • Publication number: 20140333902
    Abstract: An integrator includes a plurality of rectangular lens cells arranged in a direction x and a direction y. Laser light emitted from a laser source is projected onto an integrator. A beam irradiation position moving unit is configured to cause the laser light to scan the surface of the integrator in the directions x and y so that the laser light is sequentially projected onto a plurality of lens cells. A reflective liquid crystal device is configured to modulate the laser light emitted from the integrator. A projection lens is configured to project the laser light modulated by the reflective liquid crystal device.
    Type: Application
    Filed: July 22, 2014
    Publication date: November 13, 2014
    Inventors: Kazutaka ABOSHI, Motoshi TOHDA, Tatsuru KOBAYASHI
  • Publication number: 20140333900
    Abstract: A beam, expansion unit is configured to expand a beam of laser light emitted from a laser light source into an ellipse. A beam irradiation position moving unit is configured to translate a mirror by a driving unit to sequentially move the laser light expanded into the ellipse on the surface of an integrator in a minor-axis direction of the ellipse. A reflective liquid crystal device is configured to modulate the laser light. A projection lens is configured to project the laser light modulated by the reflective liquid crystal device.
    Type: Application
    Filed: July 22, 2014
    Publication date: November 13, 2014
    Inventors: Kazutaka ABOSHI, Motoshi TOHDA, Tatsuru KOBAYASHI
  • Patent number: 8373692
    Abstract: A first linearly polarized bundle of rays of incident rays is converted by optical modulation with an input video signal into a second linearly polarized bundle of rays orthogonal to the first rays in polarization. The first rays pass through a polarizer before optically modulated. A second linearly polarized bundle of rays originally involved in the incident rays is reflected by the polarizer in a first direction. The second rays obtained by the optical modulation are reflected by the polarizer in a second direction. The second rays reflected in the second direction pass through another polarizer. A first linearly polarized bundle of rays involved in the reflected second rays is reflected by the other polarizer. The reflected first rays is detected by an optical sensor that is positioned outside an optical path of the second rays originally involved in the incident rays and reflected in the first direction.
    Type: Grant
    Filed: January 14, 2009
    Date of Patent: February 12, 2013
    Assignee: JVC Kenwood Corporation
    Inventors: Yuji Uchiyama, Masato Furuya, Tatsuru Kobayashi, Ryo Nishima, Motoshi Tohda, Yoshio Fukuzaki, Takeshi Makabe, Yasuo Ishizaka, Akihiro Hamaguchi
  • Publication number: 20120188518
    Abstract: A light source device includes a fluorescent assembly and a light tunnel. The light tunnel is located on the fluorescent assembly with no gap.
    Type: Application
    Filed: January 23, 2012
    Publication date: July 26, 2012
    Applicant: JVC KENWOOD CORPORATION
    Inventors: Tatsuya MUKOUYAMA, Tatsuru KOBAYASHI
  • Publication number: 20120162614
    Abstract: A light source device includes excitation light sources integrated into a module and each emitting excitation light. A beam splitter optical system splits the excitation light from the excitation light sources into first, second, and third portions. A first fluorescent member emits red light in response to the first portion of the excitation light through fluorescence. A second fluorescent member emits green light in response to the second portion of the excitation light through fluorescence. A third fluorescent member emits blue light in response to the third portion of the excitation light through fluorescence. A combining optical system combines the red light, the green light, and the blue light.
    Type: Application
    Filed: December 27, 2011
    Publication date: June 28, 2012
    Applicant: JVC KENWOOD Corporation
    Inventors: Tatsuru Kobayashi, Tatsuya Mukouyama, Motoshi Tohda
  • Publication number: 20090179882
    Abstract: A first linearly polarized bundle of rays of incident rays is converted by optical modulation with an input video signal into a second linearly polarized bundle of rays orthogonal to the first rays in polarization. The first rays pass through a polarizer before optically modulated. A second linearly polarized bundle of rays originally involved in the incident rays is reflected by the polarizer in a first direction. The second rays obtained by the optical modulation are reflected by the polarizer in a second direction. The second rays reflected in the second direction pass through another polarizer. A first linearly polarized bundle of rays involved in the reflected second rays is reflected by the other polarizer. The reflected first rays is detected by an optical sensor that is positioned outside an optical path of the second rays originally involved in the incident rays and reflected in the first direction.
    Type: Application
    Filed: January 14, 2009
    Publication date: July 16, 2009
    Applicant: Victor Company of Japan, Ltd.
    Inventors: Yuji Uchiyama, Masato Furuya, Tatsuru Kobayashi, Ryo Nishima, Motoshi Tohda, Yoshio Fukuzaki, Takeshi Makabe, Yasuo Ishizaka, Akihiro Hamaguchi
  • Publication number: 20090161073
    Abstract: A bundle of rays is incident in a lens array and converted into sub-bundles of rays. The sub-bundles of rays are separated by a color separator into first and second sub-bundles of rays of different colors. The first and the second sub-bundles of rays are combined by other lens arrays into a first and a second bundle of rays of uniform illuminance, respectively. The first and second bundle of rays of uniform illuminance are applied polarization beam splitting and then polarization angle conversion by polarization converters, to be converted into first and second linearly polarized beams, respectively. The second linearly polarized beams are separated by a color separator, provided on an optical path of the second linearly polarized beams, into third and fourth linearly polarized beams of different colors.
    Type: Application
    Filed: December 16, 2008
    Publication date: June 25, 2009
    Applicant: Victor Company of Japan, Ltd.
    Inventors: Tatsuru Kobayashi, Akio Hayama, Kouichi Kawamura, Ryo Nishima
  • Publication number: 20080123343
    Abstract: A light source device includes a solid light emitting element 1 having a reflection film on the back side, first and second reflection surfaces 2, 3 opposing each other in parallel and substantially perpendicular to a front surface of the solid light emitting element 1 and a third reflection surface 4 substantially perpendicular to the first and second reflection surfaces 2, 3 and opposing the front surface of the solid light emitting element 1. The third reflection surface 4 is inclined to the front surface of the solid light emitting element 1. The reflection film of the element 1, the first, second and third reflection surfaces 2, 3, 4 do constitute a closed polyhedron having an emission opening 5 smaller than a light emitting surface of the element 1. Light emitted from the element 1 is emitted to an outside through the emission opening 5.
    Type: Application
    Filed: June 22, 2007
    Publication date: May 29, 2008
    Inventors: Tatsuru Kobayashi, Ryosuke Nakagoshi, Ryusaku Takahashi, Isamu Nakayama, Takayuki Kashiwagi, Eiji Kubo, Naoya Okamoto
  • Patent number: 7350926
    Abstract: A light source apparatus according to one embodiment of the present invention is comprised of a light emitting tube having a first electrode in one end and a second electrode in the other end thereof, the tube having both ends closed, a concave-shaped reflector having a hole in its deepest portion, the hole being provided for holding the light emitting tube, a transparent glass plate covering an opening of the reflector, a lead wire whose ends connects to the second electrode and extends out through a hole formed on a side surface of the reflector, respectively, a cooling fan blowing cooling air toward the reflector, and an air guiding member that separates the cooling air from the fan into a first cooling air cooling an outer surface of the reflector and a second cooling air cooling the other end of the lead wire extending out from the reflector.
    Type: Grant
    Filed: June 17, 2005
    Date of Patent: April 1, 2008
    Assignee: Victor Company of Japan, Limited
    Inventors: Mitsuharu Fukuda, Tatsuru Kobayashi, Atsushi Koide, Noboru Fujino
  • Publication number: 20070024809
    Abstract: A polarizing illuminant apparatus includes a surface emission light source 1 that emits a monochroic and indefinitely polarized light, a tabular photonic crystal 2 arranged on a light emitting surface 1a of the surface emission light source 1 to receive the light emitted from the light emitting surface 1a, a quarter wave plate 3 that receives a light emitted from the surface emission light source 1 and transmitted through the photonic crystal 2 and a reflective polarization plate 4 arranged in substantially-parallel with the photonic crystal 2 to receive a light transmitted through the quarter wave plate 3.
    Type: Application
    Filed: July 27, 2006
    Publication date: February 1, 2007
    Applicant: VICTOR COMPANY OF JAPAN, LIMITED
    Inventors: Ryusaku Takahashi, Tatsuru Kobayashi, Kazuya Akiyama
  • Publication number: 20060001844
    Abstract: A light source apparatus according to one embodiment of the present invention is comprised of a light emitting tube having a first electrode in one end and a second electrode in the other end thereof, the tube having both ends closed, a concave-shaped reflector having a hole in its deepest portion, the hole being provided for holding the light emitting tube, a transparent glass plate covering an opening of the reflector, a lead wire whose ends connects to the second electrode and extends out through a hole formed on a side surface of the reflector, respectively, a cooling fan blowing cooling air toward the reflector, and an air guiding member that separates the cooling air from the fan into a first cooling air cooling an outer surface of the reflector and a second cooling air cooling the other end of the lead wire extending out from the reflector.
    Type: Application
    Filed: June 17, 2005
    Publication date: January 5, 2006
    Inventors: Mitsuharu Fukuda, Tatsuru Kobayashi, Atsushi Koide, Noboru Fujino
  • Publication number: 20040001250
    Abstract: There is disclosed a data presentation apparatus including: a data laying table on which data such as a written/drawn draft and solid material are to be laid; an aspheric reflection mirror, disposed above the vicinity of a side part of the data laying table, for obliquely taking an image light of the data laid on the data laying table and reflecting the image light of the data; an image forming optical system which cooperates with the aspheric reflection mirror to form the image light of the data reflected by the aspheric reflection mirror into an image; and an image pickup element for receiving the image light of the data formed into the image by the image forming optical system.
    Type: Application
    Filed: June 24, 2003
    Publication date: January 1, 2004
    Inventors: Tatsuru Kobayashi, Keiichi Maeno, Manabu Kobayashi, Yoshinori Suzuki