Patents by Inventor Junji Takeichi

Junji Takeichi 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).

  • Publication number: 20190334065
    Abstract: A method of manufacturing a light emitting device includes: providing a wiring substrate on which a light emitting element and a frame body surrounding the light emitting element are disposed, the frame body having a corner portion in a top view; forming a support column member in contact with at least one of an inner peripheral surface and a top surface of the corner portion of the frame body; and forming a light-transmissive member at least partially in contact with the frame body and the support column member with at least a part of the light-transmissive member being positioned above the frame body and the support column member.
    Type: Application
    Filed: April 22, 2019
    Publication date: October 31, 2019
    Inventor: Junji TAKEICHI
  • Patent number: 10367119
    Abstract: A method of manufacturing a light-emitting device includes: providing a light-emitting element, the light-emitting element comprising a layered semiconductor partially comprising an active layer in a plan view; mounting the light-emitting element on a supporting member; forming a phosphor layer so as to cover the light-emitting element; determining a surplus portion of the phosphor layer; and removing at least a portion of the phosphor layer in a region in the plan view in which the active layer is not disposed.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: July 30, 2019
    Assignee: NICHIA CORPORATION
    Inventor: Junji Takeichi
  • Publication number: 20180182924
    Abstract: A method of manufacturing a light-emitting device includes: providing a light-emitting element, the light-emitting element comprising a layered semiconductor partially comprising an active layer in a plan view; mounting the light-emitting element on a supporting member; forming a phosphor layer so as to cover the light-emitting element; determining a surplus portion of the phosphor layer; and removing at least a portion of the phosphor layer in a region in the plan view in which the active layer is not disposed.
    Type: Application
    Filed: December 26, 2017
    Publication date: June 28, 2018
    Applicant: NICHIA CORPORATION
    Inventor: Junji TAKEICHI
  • Patent number: 8197111
    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: Grant
    Filed: June 11, 2010
    Date of Patent: June 12, 2012
    Assignee: Nichia Corporation
    Inventors: Atsutomo Hama, Tomotaka Honda, Shinichi Nagahama, Junji Takeichi, Yoshinori Murazaki, Hiroto Tamaki, Yukihiro Hayashi
  • Patent number: 8044569
    Abstract: A light emitting device includes a wavelength converting member for absorbing light emitted by an exciting light source and emitting light of a different wavelength. With a wavelength at which the light from the exciting light source has a maximum energy intensity denoted as a first wavelength, a wavelength at which the light from the wavelength converting member has a maximum energy intensity denoted as a second wavelength, a wavelength lying between the first and second wavelengths at which the light from the light emitting device has a minimum energy intensity denoted as a third wavelength, and 650 nm denoted as a fourth wavelength, then the light emitting device has an emission spectrum such that the proportion of the energy intensity at the first wavelength to the energy intensity at the third wavelength is in a range from 100:15 to 100:150, and the proportion of the energy intensity at the first wavelength to the energy intensity at the fourth wavelength is in a range from 100:45 to 100:200.
    Type: Grant
    Filed: June 15, 2006
    Date of Patent: October 25, 2011
    Assignee: Nichia Corporation
    Inventors: Suguru Takashima, Masato Aihara, Junji Takeichi, Takahiro Naitou, Hiroto Tamaki, Tomohisa Kishimoto
  • Patent number: 7923918
    Abstract: The present invention provides a reliable, long-life phosphor, or the like, which is prevented from darkening due to aging. A light emitting apparatus has a light emitting element and a phosphor layer. The phosphor layer has a phosphor excited by light from the light emitting element, and a binder which binds the phosphor. The binder is hydroxide oxide gel obtained by curing sol of a hydroxide oxide mixed with sol containing at least one metallic element selected from the group consisting of Al, Y, Gd, Lu, Sc, Ga, In, and B. Transmittance of hydroxide oxide in a gel state is higher than the transmittance in the polycrystal state where the sol-gel reaction is proceeded. In addition, the content of hydroxyl group or water of crystallization in the hydroxide oxide is 10% or less by weight.
    Type: Grant
    Filed: March 12, 2004
    Date of Patent: April 12, 2011
    Assignee: Nichia Corporation
    Inventors: Hiroto Tamaki, Shinsuke Sofue, Kunihiro Izuno, Junji Takeichi
  • Publication number: 20100277054
    Abstract: A light emitting device having a wavelength converting member for absorbing light from a pumping light source and converting its wavelength. Assuming a wavelength where the light from the pumping light source has a maximum energy intensity is a first wavelength, a wavelength where the light from the wavelength converting member has a maximum energy intensity is a second wavelength, a wavelength between the first and second wavelengths where emission spectrum of the light emitting device has a minimum energy intensity is a third wavelength, and a wavelength of 650 nm is a fourth wavelength, the ratio of energy intensity between the first and third wavelengths is 100:15-150, and the ratio of energy intensity between the first and fourth wavelengths is 100:45-200.
    Type: Application
    Filed: June 15, 2006
    Publication date: November 4, 2010
    Applicant: NICHIA CORPORATION
    Inventors: Suguru Takashima, Masato Aihara, Junji Takeichi, Takahiro Naitou, Hiroto Tamaki, Tomohisa Kishimoto
  • 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: 7723740
    Abstract: A light emitting device that light of various colors by blending lights emitted by two or more kinds of fluorescent materials which are substantially directly excited by light emitted by an excitation source having principal emission peak in a range from 250 nm to 500 nm. Each of the fluorescent materials is of a direct-transition type.
    Type: Grant
    Filed: September 16, 2004
    Date of Patent: May 25, 2010
    Assignee: Nichia Corporation
    Inventors: Suguru Takashima, Masatoshi Kameshima, Hiroto Tamaki, Junji Takeichi, Yoshinori Murazaki, Shinpei Kinoshita
  • 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: 7482636
    Abstract: A light emitting device comprises a light emitting element, and a light conversion member including a phosphor material that is capable of absorbing light emitted from the light emitting element at least partially and emitting light in different wavelength. The light emitting device further comprises a heat dissipation member in a side where the light conversion member as viewed from the light emitting element.
    Type: Grant
    Filed: October 15, 2004
    Date of Patent: January 27, 2009
    Assignee: Nichia Corporation
    Inventors: Takashi Murayama, Hiroto Tamaki, Junji Takeichi
  • 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
  • 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: 7356054
    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: December 16, 2005
    Date of Patent: April 8, 2008
    Assignee: Nichia Corporation
    Inventors: Atsutomo Hama, Junji Takeichi, Takafumi Sugiyama, Yukihiro Hayashi
  • Publication number: 20070131954
    Abstract: A light emitting device comprises a light emitting element, and a light conversion member including a phosphor material that is capable of absorbing light emitted from the light emitting element at least partially and emitting light in different wavelength. The light emitting device further comprises a heat dissipation member in a side where the light conversion member as viewed from the light emitting element.
    Type: Application
    Filed: October 15, 2004
    Publication date: June 14, 2007
    Applicant: NICHIA CORPORATION
    Inventors: Takashi Murayama, Hiroto Tamaki, Junji Takeichi
  • Publication number: 20060198418
    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: December 16, 2005
    Publication date: September 7, 2006
    Applicant: NICHIA CORPORATION
    Inventors: Atsutomo Hama, Junji Takeichi, Takafumi Sugiyama, Yukihiro Hayashi
  • Publication number: 20060170332
    Abstract: The present invention provides a reliable, long-life phosphor, or the like, which is prevented from darkening due to aging. A light emitting apparatus has a light emitting element and a phosphor layer. The phosphor layer has a phosphor excited by light from the light emitting element, and a binder which binds the phosphor. The binder is hydroxide oxide gel obtained by curing sol of a hydroxide oxide mixed with sol containing at least one metallic element selected from the group consisting of Al, Y, Gd, Lu, Sc, Ga, In, and B. Transmittance of hydroxide oxide in a gel state is higher than the transmittance in the polycrystal state where the sol-gel reaction is proceeded. In addition, the content of hydroxyl group or water of crystallization in the hydroxide oxide is 10% or less by weight.
    Type: Application
    Filed: March 12, 2004
    Publication date: August 3, 2006
    Inventors: Hiroto Tamaki, Shinsuke Sofue, Kunihiro Izuno, Junji Takeichi
  • Publication number: 20050156496
    Abstract: A light emitting device that emits light of various colors by blending lights emitted by two or more kinds of fluorescent materials which are substantially directly excited by the light emitted by an excitation source having principal emission peak in a range from 250 nm to 500 nm. Each of the fluorescent material is of a direct-transition type.
    Type: Application
    Filed: September 16, 2004
    Publication date: July 21, 2005
    Inventors: Suguru Takashima, Masatoshi Kameshima, Hiroto Tamaki, Junji Takeichi, Yoshinori Murazaki, Shinpei Kinoshita