Patents by Inventor Yukihiro Hayashi

Yukihiro Hayashi 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: 7917847
    Abstract: A method of rendering a page, which includes starting obtaining operation for obtaining a page made by a markup language, performing a text browsing mode operation on obtained part of data of the page in parallel with the obtaining operation of the page, judging whether or not acquisition of definition information which is information to be applied to the entire page so as to render the page as designated by a markup language document of the page is finished, and switching onscreen representation, depending on a result of the judging, from onscreen representation in a text browsing mode to onscreen representation in which the definition information is applied.
    Type: Grant
    Filed: November 1, 2004
    Date of Patent: March 29, 2011
    Assignee: Access Co., Ltd.
    Inventors: Michimasa Uematsu, Takao Sekine, Yukihiro Hayashi, Takuya Harakawa, Shinji Yamabuchi
  • Patent number: 7878696
    Abstract: An optical component that can be attached to an end portion of an optical guiding member, and a light converting member used in the optical component. The optical component comprises a cap having an engaging portion defining a bore engaged with an end member of a light guiding member, and an arranging portion defining a opening connected to the bore in the engaging portion, and a light converting member disposed in the opening formed in the arranging portion.
    Type: Grant
    Filed: December 12, 2006
    Date of Patent: February 1, 2011
    Assignee: Nichia Corporation
    Inventors: Atsutomo Hama, Yoshinori Murazaki, Takafumi Sugiyama, Yukihiro Hayashi, Naoto Morizumi
  • Patent number: 7843124
    Abstract: The light emitting apparatus according to the present invention includes a light source; and an optical component including a fixed member having a through hole, and a wavelength conversion member having at least one part thereof arranged in the through hole, a cut-in part or a hole part being formed in a direction substantially perpendicular to the longitudinal direction of the through hole of the fixed member; where the light from the light source is guided to the wavelength conversion member.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: November 30, 2010
    Assignee: Nichiya Corporation
    Inventors: Atsutomo Hama, Yukihiro Hayashi
  • Patent number: 7813904
    Abstract: This is to provide a computing method of motor model, a motor simulation method and a motor simulation apparatus in which high-speed real-time simulation is made feasible while saving computer resources. A motor model is formulated, motor model which uses a motor model of alternate-current motor which virtually includes the inverse matrix of an inductance matrix L(?), which is a predetermined function whose variable is a rotary angle ?, and, in the computation of this motor model, the value, which is obtained by computing a matrix ?(?) which is equal to the inverse matrix of the inductance matrix L(?), is used as the value of the inverse matrix of the inductance matrix L(?).
    Type: Grant
    Filed: November 17, 2005
    Date of Patent: October 12, 2010
    Assignee: Toyota Technical Development Corporation
    Inventors: Zibo Kang, Yukihiro Hayashi, Masaaki Tokai, Hirona Morita
  • Publication number: 20100254153
    Abstract: A light emitting device includes an excitation light source that emits excitation light, a wavelength conversion member, a light guide, and a light guide distal end member. The wavelength conversion member absorbs the excitation light emitted from the excitation light source, converts its wavelength, and releases light of a predetermined wavelength band. The light guide in which the center part (core) of its cross section has a refractive index that is higher than the refractive index of the peripheral portion (cladding) guides the excitation light emitted from the excitation light source to the wavelength conversion member. The light guide distal end member supports a distal end of the light guide on the wavelength conversion member side. The light guide distal end member is formed from a material that reflects the excitation light and/or the light that has undergone wavelength conversion.
    Type: Application
    Filed: June 11, 2010
    Publication date: October 7, 2010
    Applicant: NICHIA CORPORATION
    Inventors: Atsutomo HAMA, Tomotaka HONDA, Shinichi NAGAHAMA, Junji TAKEICHI, Yoshinori MURAZAKI, Hiroto TAMAKI, Yukihiro HAYASHI
  • Patent number: 7758224
    Abstract: A light emitting device, comprises: an excitation light source that emits excitation light; a wavelength conversion member that absorbs the excitation light emitted from the excitation light source, converts its wavelength, and releases light of a predetermined wavelength band; a light guide in which the center part (core) of its cross section has a refractive index that is higher than the refractive index of the peripheral portion (cladding), and which guides the light emitted from the wavelength conversion member to the outside; and wherein the wavelength conversion member is produced by laminating a plurality of layers that wavelength-convert different wavelengths of light.
    Type: Grant
    Filed: September 28, 2005
    Date of Patent: July 20, 2010
    Assignee: Nichia Corporation
    Inventors: Atsutomo Hama, Tomotaka Honda, Shinichi Nagahama, Junji Takeichi, Yoshinori Murazaki, Hiroto Tamaki, Yukihiro Hayashi
  • Patent number: 7751661
    Abstract: There is provided a light emitting device using an optical component capable of emitting light having a wavelength different from that of light exit from an optical fiber and obtaining light of high output, and capable of being easily attached to an end of the optical fiber. The optical component includes an optical fiber holding member for holding an optical fiber, a light conversion member, and a cap having an inner hole allowing the light conversion member and the optical fiber holding member to be inserted into and an engagement part with an opening for engaging inserted members at one end of the inner hole. The light conversion member inserted into the inner hole of the cap is fitted into the inner hole with the optical fiber holding member pressed against the engagement part. The opening of the engagement part is smaller than a maximum diameter of the light conversion member.
    Type: Grant
    Filed: September 20, 2007
    Date of Patent: July 6, 2010
    Assignees: Nippon Electric Glass Co, Ltd, Nichia Corporation
    Inventors: Masaaki Kadomi, Yoshio Umayahara, Tadahito Furuyama, Masaru Iwao, Atsutomo Hama, Takafumi Sugiyama, Yukihiro Hayashi, Naoto Morizumi
  • Patent number: 7600924
    Abstract: An optical component comprises: an optical fiber having the core and the clad; a light guide holding member attached to the exit end of the optical fiber; a wavelength conversion member that contains a fluorescent substance; and a reflection means provided between the exit end of the optical fiber and the wavelength conversion member, or between the light guide holding member and the wavelength conversion member. An increase in optical output is made possible not by reducing reflection as with conventional optical components, but on the contrary by actually producing reflection. Therefore, optical output can be increased by a means other than forming an optical film that reduces Fresnel reflection.
    Type: Grant
    Filed: October 6, 2006
    Date of Patent: October 13, 2009
    Assignee: Nichia Corporation
    Inventors: Atsutomo Hama, Yukihiro Hayashi, Takeshi Tsujio, Hiroaki Shozui, Tomonori Morizumi, Naoto Morizumi
  • Patent number: 7591575
    Abstract: The present invention provides a light emitting device comprising: an excitation light source which radiates excitation light; a wavelength converting member which absorbs and converts the wavelength of at least part of the excitation light radiated from the excitation light source, and releases light with a predetermined wavelength band; a light guide for guiding the excitation light radiated from the excitation light source to the wavelength converting member, with one end at the excitation light source and the other end at the wavelength converting member, wherein the refractive index of the cross-sectional center region (core) is higher than that of the circumferential region (clad); and a thermally conductive transparent film which contacts with the wavelength converting member.
    Type: Grant
    Filed: January 18, 2008
    Date of Patent: September 22, 2009
    Assignee: Nichia Corporation
    Inventors: Atsutomo Hama, Junji Takeichi, Takafumi Sugiyama, Yukihiro Hayashi
  • Patent number: 7557985
    Abstract: A light emitting device includes a first unit having a first excitation light source including a laser element emitting blue wavelength band excitation light, and a first wavelength converting member including at least one type of fluorescent material and which absorbs at least a portion of a first excitation light, converts the wavelength, and releases light with a wavelength longer than the first excitation light, and a second unit having a second excitation light source including a laser element which emits excitation light with a wavelength band shorter than the blue wavelength band excitation light, and a second wavelength converting member which includes at least one type of fluorescent material and which absorbs at least a portion of a second excitation light, converts the wavelength, and releases light with a wavelength longer than the second excitation light. The first unit and the second unit are combined using a bundle fiber.
    Type: Grant
    Filed: April 21, 2008
    Date of Patent: July 7, 2009
    Assignee: Nichia Corporation
    Inventors: Atsutomo Hama, Shinichi Nagahama, Yukihiro Hayashi
  • Publication number: 20090157370
    Abstract: This is to provide a computing method of motor model, a motor simulation method and a motor simulation apparatus in which high-speed real-time simulation is made feasible while saving computer resources. A motor model is formulated, motor model which uses a motor model of alternate-current motor which virtually includes the inverse matrix of an inductance matrix L(?), which is a predetermined function whose variable is a rotary angle ?, and, in the computation of this motor model, the value, which is obtained by computing a matrix ?(?) which is equal to the inverse matrix of the inductance matrix L(?), is used as the value of the inverse matrix of the inductance matrix L(?).
    Type: Application
    Filed: November 17, 2005
    Publication date: June 18, 2009
    Applicant: TOYOTA TECHNICAL DEVELOPMENT CORPORATION
    Inventors: Zibo Kang, Yukihiro Hayashi, Masaaki Tokai, Hirona Morita
  • Publication number: 20090003400
    Abstract: In a semiconductor light-emitting device, light from a laser diode is output to the outside after the luminance of the light being enhanced. It includes a support body provided with lead terminals, one or more laser diodes mounted on the support body, a cylindrical reflector fixed to the support body to surround the laser diode(s) and provided with a light reflection surface formed on an inner surface thereof, and a cap placed to cover an opening distal end face of the reflector and held at an opening distal end part of the reflector, the cap being provided at a central part thereof with a solid fluorescent member including a fluorescent substance that is excited by the light from the laser diode and emits light different in colors from light emitted by the laser diode.
    Type: Application
    Filed: September 10, 2008
    Publication date: January 1, 2009
    Applicant: NICHIA CORPORATION
    Inventors: Shinichi Nagahama, Atsutomo Hama, Takafumi Sugiyama, Yukihiro Hayashi, Naoto Morizumi, Yoshinori Murazaki
  • Patent number: 7433115
    Abstract: A light emitting device comprises a first unit and a second unit, the first unit comprising: a first excitation light source comprising a laser element emitting blue wavelength band excitation light; a first wavelength converting member comprising at least one type of fluorescent material and which absorbs at least a portion of a first excitation light emitted from the first excitation light source, converts the wavelength, and releases light with a wavelength longer than the first excitation light; and a first light guide which has a refractive index in the center region of the cross-section which is higher than the refractive index of the surrounding region and which transmits the first excitation light emitted from the first excitation light source; and the second unit comprising: a second excitation light source comprising a laser element which emits excitation light with a wavelength band shorter than the blue wavelength band excitation light emitted by the laser element; a second wavelength converting m
    Type: Grant
    Filed: December 14, 2005
    Date of Patent: October 7, 2008
    Assignee: Nichia Corporation
    Inventors: Atsutomo Hama, Shinichi Nagahama, Yukihiro Hayashi
  • Patent number: 7422356
    Abstract: A light emitting device, comprises at least: a light emitting element; a wavelength conversion member for converting the wavelength of light from the light emitting element; a bendable light guide member for guiding light from the light emitting element to the wavelength conversion member; and a heat conduction member that is thermally connected to the wavelength conversion member.
    Type: Grant
    Filed: June 9, 2006
    Date of Patent: September 9, 2008
    Assignee: Nichia Corporation
    Inventors: Atsutomo Hama, Yukihiro Hayashi
  • Publication number: 20080205477
    Abstract: A light emitting device includes a first unit having a first excitation light source including a laser element emitting blue wavelength band excitation light, and a first wavelength converting member including at least one type of fluorescent material and which absorbs at least a portion of a first excitation light, converts the wavelength, and releases light with a wavelength longer than the first excitation light, and a second unit having a second excitation light source including a laser element which emits excitation light with a wavelength band shorter than the blue wavelength band excitation light, and a second wavelength converting member which includes at least one type of fluorescent material and which absorbs at least a portion of a second excitation light, converts the wavelength, and releases light with a wavelength longer than the second excitation light. The first unit and the second unit are combined using a bundle fiber.
    Type: Application
    Filed: April 21, 2008
    Publication date: August 28, 2008
    Applicant: NICHIA CORPORATION
    Inventors: Atsutomo HAMA, Shinichi NAGAHAMA, Yukihiro HAYASHI
  • Publication number: 20080117620
    Abstract: The present invention provides a light emitting device comprising: an excitation light source which radiates excitation light; a wavelength converting member which absorbs and converts the wavelength of at least part of the excitation light radiated from the excitation light source, and releases light with a predetermined wavelength band; a light guide for guiding the excitation light radiated from the excitation light source to the wavelength converting member, with one end at the excitation light source and the other end at the wavelength converting member, wherein the refractive index of the cross-sectional center region (core) is higher than that of the circumferential region (clad); and a thermally conductive transparent film which contacts with the wavelength converting member.
    Type: Application
    Filed: January 18, 2008
    Publication date: May 22, 2008
    Applicant: NICHIA CORPORATION
    Inventors: Atsutomo HAMA, Junji TAKEICHI, Takafumi SUGIYAMA, Yukihiro HAYASHI
  • Patent number: 7374350
    Abstract: The optical component according to the present invention includes a fixed member including a through hole, and a wavelength conversion member having at least one part thereof arranged in the through hole, where the fixed member is formed with a cut-in part or a hole part in a direction substantially perpendicular to the longitudinal direction of the through hole.
    Type: Grant
    Filed: May 24, 2007
    Date of Patent: May 20, 2008
    Assignees: Nippon Electric Glass Co., Ltd., Nichia Corporation
    Inventors: Masaaki Kadomi, Yoshio Umayahara, Tadahito Furuyama, Masaru Iwao, Atsutomo Hama, Yukihiro Hayashi
  • Publication number: 20080089089
    Abstract: A light emitting device, comprises: an excitation light source that emits excitation light; a wavelength conversion member that absorbs the excitation light emitted from the excitation light source, converts its wavelength, and releases light of a predetermined wavelength band; a light guide in which the center part (core) of its cross section has a refractive index that is higher than the refractive index of the peripheral portion (cladding), and which guides the light emitted from the wavelength conversion member to the outside; and wherein the wavelength conversion member is produced by laminating a plurality of layers that wavelength-convert different wavelengths of light.
    Type: Application
    Filed: September 28, 2005
    Publication date: April 17, 2008
    Applicant: NICHIA CORPORATION
    Inventors: Atsutomo Hama, Tomotaka Honda, Shinichi Nagahama, Junji Takeichi, Yoshinori Murazaki, Hiroto Tamaki, Yukihiro Hayashi
  • Patent number: D591438
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: April 28, 2009
    Assignee: Nichia Corporation
    Inventors: Atsutomo Hama, Takafumi Sugiyama, Yukihiro Hayashi, Naoto Morizumi
  • Patent number: D595881
    Type: Grant
    Filed: April 18, 2007
    Date of Patent: July 7, 2009
    Assignees: Nichia Corporation, Nippon Electric Glass Co., Ltd.
    Inventors: Atsutomo Hama, Takafumi Sugiyama, Yukihiro Hayashi, Naoto Morizumi, Masaaki Kadomi, Tadahito Furuyama