Patents by Inventor Takashi Oku

Takashi Oku 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: 11061231
    Abstract: To provide a display device in which the brightness of the image viewed by the observer is bright, and the brightness of the image is as uniform as possible. The display device according to the present invention includes a frame 10 and an image display device 100, the image display device 100 includes an image forming apparatus 11 and an optical device 120, the optical device 120 includes a light guide plate 121, a first deflection unit 130 configured with a first hologram diffraction grating 131 and a second hologram diffraction grating 135, and a second deflection unit 140 configured with a third hologram diffraction grating 141, and slant angles and pitches of the first hologram diffraction grating 131, the second hologram diffraction grating 135, and the third hologram diffraction grating 141 satisfy a predetermined relation.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: July 13, 2021
    Assignee: SONY CORPORATION
    Inventors: Takashi Oku, Katsuyuki Akutsu, Akio Machida, Nobuhiro Suzuki, Takuji Yoshida
  • Publication number: 20190146221
    Abstract: To provide a display device in which the brightness of the image viewed by the observer is bright, and the brightness of the image is as uniform as possible. The display device according to the present invention includes a frame 10 and an image display device 100, the image display device 100 includes an image forming apparatus 11 and an optical device 120, the optical device 120 includes a light guide plate 121, a first deflection unit 130 configured with a first hologram diffraction grating 131 and a second hologram diffraction grating 135, and a second deflection unit 140 configured with a third hologram diffraction grating 141, and slant angles and pitches of the first hologram diffraction grating 131, the second hologram diffraction grating 135, and the third hologram diffraction grating 141 satisfy a predetermined relation.
    Type: Application
    Filed: November 25, 2015
    Publication date: May 16, 2019
    Inventors: TAKASHI OKU, KATSUYUKI AKUTSU, AKIO MACHIDA, NOBUHIRO SUZUKI, TAKUJI YOSHIDA
  • Patent number: 9890373
    Abstract: The present application relates to a modified isoprene synthase that has an isoprene synthetic activity and has at least one mutation of an amino acid residue in the amino acid sequence of SEQ ID NO: 4, an amino acid sequence having one or several amino acid substitutions, deletions, insertions or additions in the amino acid sequence of SEQ ID NO: 4, or an amino acid sequence having 90% or more identity to the amino acid sequence of SEQ ID NO: 4. The modified isoprene synthase is useful for preparing isoprene monomers in improved yields.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: February 13, 2018
    Assignee: Ajinomoto Co., Inc.
    Inventors: Kunio Nakata, Yoshinori Tajima, Uno Tagami, Takashi Oku, Yasuhiro Kashima
  • Publication number: 20160257944
    Abstract: Modified isoprene synthases that have one or more mutations of a given amino acid residue(s) in any amino acid sequence of (a) the amino acid sequence of SEQ ID NO:4, (b) an amino acid sequence having one or several amino acid substitutions, deletions, insertions or additions in the amino acid sequence of SEQ ID NO:4, or (c) an amino acid sequence having 90% or more identity to the amino acid sequence of SEQ ID NO:4, and has an isoprene synthetic activity are useful for preparing isoprene monomer in improved yields.
    Type: Application
    Filed: May 19, 2016
    Publication date: September 8, 2016
    Applicant: AJINOMOTO CO., INC.
    Inventors: Kunio NAKATA, Yoshinori Tajima, Uno Tagami, Takashi Oku, Yasuhiro Kashima
  • Patent number: 8833965
    Abstract: According to one embodiment, a light-emitting circuit includes: a plurality of substrates in which wiring pattern layers are formed, the substrates including light-emitting elements connected to and mounted on the wiring pattern layers; and a linear conductor having electric conductivity, the linear conductor including linear joining sections at both ends electrically connected to the wiring pattern layers of the substrates and a convex section formed to be bent in a convex shape in an intermediate section between the joining sections, and the joining sections being respectively joined to the wiring pattern layers among the plurality of substrates adjacent to one another.
    Type: Grant
    Filed: September 11, 2012
    Date of Patent: September 16, 2014
    Assignee: Toshiba Lighting & Technology Corporation
    Inventors: Susumu Shimasaki, Takashi Oku, Junichi Ishiguro, Kenichi Asami, Takashi Inoue
  • Publication number: 20130193457
    Abstract: According to one embodiment, a light-emitting circuit includes: a plurality of substrates in which wiring pattern layers are formed, the substrates including light-emitting elements connected to and mounted on the wiring pattern layers; and a linear conductor having electric conductivity, the linear conductor including linear joining sections at both ends electrically connected to the wiring pattern layers of the substrates and a convex section formed to be bent in a convex shape in an intermediate section between the joining sections, and the joining sections being respectively joined to the wiring pattern layers among the plurality of substrates adjacent to one another.
    Type: Application
    Filed: September 11, 2012
    Publication date: August 1, 2013
    Applicant: TOSHIBA LIGHTING & TECHNOLOGY CORPORATION
    Inventors: Susumu SHIMASAKI, Takashi OKU, Junichi ISHIGURO, Kenichi ASAMI, Takashi INOUE
  • Patent number: 8350899
    Abstract: A stereoscopic display device includes: a display panel having a display screen on which two-dimensional image is displayed, and configured to polarize image light of the image-displaying into a particular polarization direction; and a lens array element disposed to oppose the display screen of the display panel, and having a liquid crystal layer which includes liquid crystal molecules having a refractive index anisotropy and aligned in a predetermined orientation direction under no application of voltage. The lens array element is configured to electrically change the alignment of the liquid crystal molecules to generate a lens effect, and configured to selectively change a state of passing therethrough of the image light exiting from the display panel. The predetermined orientation direction of the liquid crystal molecules of the lens array element and the polarization direction of the image light are parallel to each other.
    Type: Grant
    Filed: March 3, 2010
    Date of Patent: January 8, 2013
    Assignee: Sony Corporation
    Inventors: Kenichi Takahashi, Sho Sakamoto, Takashi Oku
  • Publication number: 20120195877
    Abstract: The object of the present invention is to provide a degradable composite material that contains at least one type of polysaccharide selected from chitin and chitosan, and has self-degrading capability. By supporting an enzyme capable of hydrolyzing chitin and chitosan on a molded article containing at least one type of polysaccharide selected therefrom, the polysaccharide can be slowly degraded in an environment where moisture is present such as a living body.
    Type: Application
    Filed: October 7, 2009
    Publication date: August 2, 2012
    Applicants: TOTAI CO., LTD., THERMOSTABLE ENZYME LABORATORY CO., LTD.
    Inventors: Takashi Oku, Takeshi Noguchi
  • Patent number: 8106859
    Abstract: Disclosed herein is a light emitting device, including: a light emitting diode; an sealing resin member having an arrangement face and configured to seal the light emitting diode; and a lens disposed on the arrangement face of the sealing resin member and formed so as to have a circular shape as viewed in the direction of an optical axis of light emitted from the light emitting diode, the lens having a concave portion formed at a central portion in such a manner as to be concave toward the sealing resin member.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: January 31, 2012
    Assignee: Sony Corporation
    Inventors: Shingo Ohkawa, Takashi Oku, Kenichi Nakaki, Tetsuo Shibanuma
  • Patent number: 8104910
    Abstract: A light emitting device includes a plurality of light emitting diodes, a plurality of sealing resins, and a lens body formed in substantially a shape of a flat plate for guiding the light. The lens body is also disposed in a state of extending over the disposition surface of each sealing resin. The lens body includes a plurality of lens parts and a plurality of light guiding parts for reflecting the light by inside surfaces of the light guiding parts. The plurality of lens parts and the plurality of light guiding parts of the lens body are formed integrally with each other. The lens parts are disposed on the respective disposition surfaces of the sealing resins, and a plurality of light emitting function parts for sending out the light reflected by the inside surfaces of the light guiding parts are formed in the light guiding parts.
    Type: Grant
    Filed: June 5, 2008
    Date of Patent: January 31, 2012
    Assignee: Sony Corporation
    Inventors: Shingo Ohkawa, Takashi Oku, Kenichi Nakaki, Tetsuo Shibanuma
  • Patent number: 8009247
    Abstract: A light source apparatus used in a backlight apparatus is disclosed. The light source apparatus includes a light-emitting diode unit and a wiring board. The light-emitting diode unit is provided as one unit by nonlinearly and closely placing respective light-emitting diodes of red, green, and blue colors, at least the light-emitting diode of one color out of the light-emitting diodes of the respective colors being constituted by first and second light-emitting diodes having different chromaticities such that an average chromaticity of the first and second light-emitting diodes is a predetermined chromaticity. On the wiring board, a plurality of light-emitting diode units are arranged at predetermined intervals in a predetermined direction.
    Type: Grant
    Filed: November 19, 2007
    Date of Patent: August 30, 2011
    Assignee: Sony Corporation
    Inventors: Takashi Oku, Naoto Kobayashi, Tomohisa Uba
  • Patent number: 7946723
    Abstract: Disclosed is a backlight device for illuminating a transmissive color liquid crystal display panel from its backside with white light. The backlight device includes, as a light source, a plural number of principal light emitting diode units 21mn, and a plural number of subsidiary light emitting diode units 21mn, where m and n are natural numbers. Each principal light emitting diode unit is made up by a plural number of light emitting diodes (21) arrayed in a string and emits white light of preset chromaticity. Each subsidiary light emitting diode unit is made up by a plural number of light emitting diodes (21) arrayed in a string and emits white light of chromaticity in the vicinity of the preset chromaticity. The number of the subsidiary light emitting diode units is smaller than that of the principal light emitting diode units.
    Type: Grant
    Filed: October 24, 2005
    Date of Patent: May 24, 2011
    Assignee: Sony Corporation
    Inventors: Takashi Oku, Takeo Arai, Yutaka Ota, Yasuhiro Tagawa
  • Patent number: 7810979
    Abstract: An illumination device including a first light source for emitting light of a first primary color, a second light source for emitting light of a second primary color, and a third light source for emitting light of a third primary color, wherein the first light source is a light emitting diode, the second light source is a fluorescent tube, and the third light source is either a light emitting diode or a fluorescent tube. The illumination device generates white light by mixing the light emitted by the first, second and third light sources. A liquid crystal panel is illuminated with the white light generated by the illumination device.
    Type: Grant
    Filed: June 2, 2005
    Date of Patent: October 12, 2010
    Assignee: Sony Corporation
    Inventor: Takashi Oku
  • Patent number: 7808585
    Abstract: A color filter (19) used in a transmissive color liquid crystal display panel of a color liquid crystal display (LCD) apparatus. This color filter (19) is constituted by a tristimulus color filter for wavelength-selecting and transmitting red light, green light and blue light. Mixing of blue color and red color is prohibited by not having the transmission wavelength band of the red filter CFR overlaid substantially on the transmission wavelength band of the blue filter CFB.
    Type: Grant
    Filed: July 12, 2005
    Date of Patent: October 5, 2010
    Assignee: Sony Corporation
    Inventors: Shuichi Haga, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto, Yasuhiro Tagawa, Yutaka Ota, Takashi Oku, Takeo Arai
  • Publication number: 20100238277
    Abstract: A stereoscopic display device includes: a display panel having a display screen on which two-dimensional image is displayed, and configured to polarize image light of the image-displaying into a particular polarization direction; and a lens array element disposed to oppose the display screen of the display panel, and having a liquid crystal layer which includes liquid crystal molecules having a refractive index anisotropy and aligned in a predetermined orientation direction under no application of voltage. The lens array element is configured to electrically change the alignment of the liquid crystal molecules to generate a lens effect, and configured to selectively change a state of passing therethrough of the image light exiting from the display panel. The predetermined orientation direction of the liquid crystal molecules of the lens array element and the polarization direction of the image light are parallel to each other.
    Type: Application
    Filed: March 3, 2010
    Publication date: September 23, 2010
    Inventors: Kenichi TAKAHASHI, Sho Sakamoto, Takashi Oku
  • Patent number: 7663714
    Abstract: Disclosed is a backlight device used for a color liquid crystal display (LCD) apparatus. The red light, green light and blue light, generated by a light source, made up by a red light emitting diode (21R), a green light emitting diode (21G) and a blue light emitting diode (21B), respectively, are mixed together to generate white light. The red light has a half-value width hwr such that 15 nm?hwr?30 nm, and the green light has a half-value width hwg such that 25 nm?hwg?50 nm. The blue light has a half-value width hwb such that 15 nm?hwb?30 nm. The white light illuminates a transmissive color liquid crystal display panel (10) from its back side. The transmissive color liquid crystal display panel includes a color filter (19) made up by a tristimulus filter for wavelength-selecting and transmitting red light, green light and blue light.
    Type: Grant
    Filed: August 9, 2005
    Date of Patent: February 16, 2010
    Assignee: Sony Corporation
    Inventors: Shuichi Haga, Koichiro Kakinuma, Takehiro Nakatsue, Tatsuhiko Matsumoto, Yasuhiro Tagawa, Yutaka Ota, Takashi Oku, Takeo Arai
  • Patent number: 7604362
    Abstract: The present invention relates to a backlight apparatus and a liquid crystal display apparatus, capable of realizing a backlight apparatus having high color reproductivity without color irregularities in a backlight apparatus having a LED device as its light source. In the optical unit 61, there are disposed the dichroic mirror B which transmits green light Lg and red light Lr and reflects blue light Lb, the dichroic mirror G which transmits the light Lb and the light Lr and reflects the light Lg, and the dichroic mirror R which transmits the light Lb and the light Lg and reflects the light Lr, and they transmit or reflect the light emitted from the LED devices 11B, 11G and 11R to mix to form the white light Lw. The light Lw formed by the dichroic mirrors B, G and R is entered to the light guiding plate 62 by the mirror performing a total reflection.
    Type: Grant
    Filed: March 24, 2008
    Date of Patent: October 20, 2009
    Assignee: Sony Corporation
    Inventors: Masato Hatanaka, Kazuhiro Yokota, Haruaki Wada, Takashi Oku
  • Patent number: 7510314
    Abstract: The present invention is directed to a backlight device using light emitting units (7) in which a large number of light emitting diodes (12) are mounted, which comprises a reflection plate (16) for reflecting rays of light which have been emitted from a light emitting unit (11), wherein the reflection plate (16) is composed of a bottom surface reflection plate (16a) for reflecting rays of light emitted from the light emitting units (7) from the bottom surface direction, side surface reflection plates (16b) to (16e) for reflecting rays of light emitted from the light emitting units (7) from respective forward and backward, and left and right side surface directions, and corner reflection plates (16f) to (16i) in which the bottom surface reflection plate (16a) and the side surface reflection plates (16b) to (16e) are connected to cover the respective corner portions, and serves to permit rays of light incident onto a display panel (1) to be uniform to realize uniformity of brightness of the entire surface there
    Type: Grant
    Filed: August 15, 2005
    Date of Patent: March 31, 2009
    Assignee: Sony Corporation
    Inventors: Takeo Arai, Takashi Oku
  • Publication number: 20080316770
    Abstract: The present invention relates to a backlight and a light guide plate, a method of manufacturing a diffuser and the light guide plate, and to a liquid crystal display apparatus, all enabling a cost reduction by reducing the parts count and curtailing unnecessary manufacturing processing. A diffuser 261 has a light distribution layer 181 including a prismatic surface wherein stripe grooves or asperities are arrayed in parallel with each other, a diffusion layer 182 containing diffusion elements 191 for diffusing incident light, and a light incidence control layer 271 including a prismatic surface wherein stripe grooves or asperities are arrayed in parallel on a side of fluorescent tubes 131. The diffusion layer 182 is formed from the same resin, and only the diffusion elements 191 are formed from a different resin.
    Type: Application
    Filed: August 15, 2008
    Publication date: December 25, 2008
    Inventors: Takashi Oku, Masato Hatanaka, Yoshinari Kawashima, Akira Koshimura, Kazuhiro Shiratori
  • Publication number: 20080303757
    Abstract: Disclosed herein is a light emitting device, including: a light emitting diode; an sealing resin member having an arrangement face and configured to seal the light emitting diode; and a lens disposed on the arrangement face of the sealing resin member and formed so as to have a circular shape as viewed in the direction of an optical axis of light emitted from the light emitting diode, the lens having a concave portion formed at a central portion in such a manner as to be concave toward the sealing resin member.
    Type: Application
    Filed: June 5, 2008
    Publication date: December 11, 2008
    Applicant: SONY CORPORATION
    Inventors: Shingo Ohkawa, Takashi Oku, Kenichi Nakaki, Tetsuo Shibanuma