Patents by Inventor Atsushi Koyanagi

Atsushi Koyanagi 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: 20210009376
    Abstract: An image forming apparatus includes an image forming portion, a reversing portion configured to reverse the sheet received through a first feeding passage by feeding the sheet in a first direction and then in a second direction opposite to the first direction, a sheet feeding portion provided in a second feeding passage branching from the first feeding passage on a side upstream of the reversing portion with respect to the first direction, a first guiding surface forming the second feeding passage for guiding a first surface of the sheet fed by the feeding portion, and a second guiding surface for guiding a second surface, opposite from the first surface, of the sheet fed from the reversing portion in the second direction. The second guiding surface is movable with movement of the first guiding surface for opening the second feeding passage.
    Type: Application
    Filed: July 7, 2020
    Publication date: January 14, 2021
    Inventors: Hiroaki Takezawa, Atsushi Yoshida, Hiroshi Kokubo, Noriaki Koyanagi
  • Publication number: 20210003911
    Abstract: A homogenizer includes a convex-lens array pair including a first convex-lens array disposed on a light entrance side and a second convex-lens array disposed on a light emission side. The first convex-lens array and the second convex-lens array are disposed so as to face each other such that each of the convex-lens arrays has a lens surface opposed to each other outward or inward. The first convex-lens array includes a plurality of first convex lenses in an array arrangement. The second convex-lens array includes a plurality of second convex lenses in an array arrangement. The first convex lens has an average internal transmission angle for incident light entering a lens-surface center region in the lens cross-section and being in parallel with the symmetry axis being equal to or more than 1.3 times an average internal transmission angle of a spherical convex lens.
    Type: Application
    Filed: September 15, 2020
    Publication date: January 7, 2021
    Applicant: AGC INC.
    Inventors: Yoshiharu OOI (Deceased), Koichi TASHIMA, Kensuke ONO, Atsushi KOYANAGI
  • Patent number: 10605969
    Abstract: An optical filter is provided with a structure that contains a green coloring matter and a black coloring matter and satisfies the following requirements (i) and (ii). Further a device is provided with such an optical filter. (i) An average transmittance of light in the wavelength range of 400 to 730 nm is 2% or less. (ii) A continuous 50 nm wavelength range where an average transmittance is 80% or more exists in the wavelength range of 800 to 1000 nm.
    Type: Grant
    Filed: June 12, 2017
    Date of Patent: March 31, 2020
    Assignee: AGC Inc.
    Inventors: So Ishido, Atsushi Koyanagi
  • Publication number: 20190368006
    Abstract: The present invention relates to a preform and a method for producing a TiAl-based turbine wheel, and particularly relates to a preform for use in producing a TiAl-based turbine wheel having a relatively thin tip thickness of a turbine blade and having excellent mechanical properties and a method for producing a TiAl-based turbine wheel using such a preform.
    Type: Application
    Filed: May 28, 2019
    Publication date: December 5, 2019
    Applicant: DAIDO STEEL CO., LTD.
    Inventors: Yoshihiko KOYANAGI, Atsushi SUGINO
  • Patent number: 10246615
    Abstract: Provided is an adhesive for use in an ultraviolet-light-emitting device using ultraviolet light having a wavelength of from 200 to 400 nm as a light source, which can attach adherends made of a polymer having a fluorine-containing alicyclic structure with excellent adhesiveness which is unlikely to be impaired by exposure to such ultraviolet light or heat. An adhesive for forming an adhesive joint in an ultraviolet-light-emitting device, which is either the following adhesive (A) or the following adhesive (B) comprising a fluoropolymer having a fluorine-containing alicyclic structure: the adhesive (A): an adhesive in which the glass transition temperature of the fluoropolymer is from 30 to 100° C., and which does not contain an ultraviolet-shielding agent; and the adhesive (B): an adhesive comprising the fluoropolymer and an ultraviolet-shielding agent.
    Type: Grant
    Filed: January 9, 2017
    Date of Patent: April 2, 2019
    Assignee: AGC, Inc.
    Inventors: Fumiko Nakayama, Yoshihiko Sakane, Masahiro Ito, Yuki Hatanaka, Atsushi Koyanagi
  • Patent number: 9829782
    Abstract: An image light projection screen has a plurality of aperiodic lens array units on a main surface. The aperiodic lens array units are arrayed two-dimensionally regularly and without any gap at least in an image display region. Each aperiodic lens array unit includes at least four apexes of micro-lenses each having a curved surface shape and arranged without any gap and non-periodically, and has symmetry keeping continuity of the curved surface shapes of the micro-lenses located in a boundary portion.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: November 28, 2017
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventors: Atsushi Koyanagi, Takuji Nomura, Koji Miyasaka
  • Publication number: 20170276846
    Abstract: An optical filter is provided with a structure that contains a green coloring matter and a black coloring matter and satisfies the following requirements (i) and (ii). Further a device is provided with such an optical filter. (i) An average transmittance of light in the wavelength range of 400 to 730 nm is 2% or less. (ii) A continuous 50 nm wavelength range where an average transmittance is 80% or more exists in the wavelength range of 800 to 1000 nm.
    Type: Application
    Filed: June 12, 2017
    Publication date: September 28, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: So ISHIDO, Atsushi KOYANAGI
  • Publication number: 20170184954
    Abstract: An image light projection screen has a plurality of aperiodic lens array units on a main surface. The aperiodic lens array units are arrayed two-dimensionally regularly and without any gap at least in an image display region. Each aperiodic lens array unit includes at least four apexes of micro-lenses each having a curved surface shape and arranged without any gap and non-periodically, and has symmetry keeping continuity of the curved surface shapes of the micro-lenses located in a boundary portion.
    Type: Application
    Filed: March 13, 2017
    Publication date: June 29, 2017
    Applicant: Asahi Glass Company, Limited
    Inventors: Atsushi KOYANAGI, Takuji NOMURA, Koji MIYASAKA
  • Publication number: 20170114253
    Abstract: Provided is an adhesive for use in an ultraviolet-light-emitting device using ultraviolet light having a wavelength of from 200 to 400 nm as a light source, which can attach adherends made of a polymer having a fluorine-containing alicyclic structure with excellent adhesiveness which is unlikely to be impaired by exposure to such ultraviolet light or heat. An adhesive for forming an adhesive joint in an ultraviolet-light-emitting device, which is either the following adhesive (A) or the following adhesive (B) comprising a fluoropolymer having a fluorine-containing alicyclic structure; the adhesive (A): an adhesive in which the glass transition temperature of the fluoropolymer is from 30 to 100° C., and which does not contain an ultraviolet-shielding agent; and the adhesive (B): an adhesive comprising the fluoropolymer and an ultraviolet-shielding agent.
    Type: Application
    Filed: January 9, 2017
    Publication date: April 27, 2017
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Fumiko NAKAYAMA, Yoshihiko SAKANE, Masahiro ITO, Yuki HATANAKA, Atsushi KOYANAGI
  • Patent number: 9244289
    Abstract: A scanning display device includes: a light source section including at least one light source configured to emitting coherent light; a light scanning section including: a scan mirror configured to reflect the light originated from the light source section and scan over a screen; and a turning section configured to turn the scan mirror; a depolarizer having outgoing polarized light distribution in which a state of polarization of outgoing light consecutively changes within an element plane, wherein: the depolarizer is placed in an optical path along which the light emitted by the light source section reaches the screen; and the state of polarization of the light is changed, thereby scanning the screen with light that has a polarized light distribution, in which the state of polarization consecutively changes, in a beam diameter.
    Type: Grant
    Filed: March 13, 2013
    Date of Patent: January 26, 2016
    Assignee: ASAHI GLASS COMPANY, LIMITED
    Inventor: Atsushi Koyanagi
  • Publication number: 20150353876
    Abstract: The present invention provides a fruit-based food and beverage having excellent richness and full bodiness, a method for enhancing richness and full bodiness of a fruit-based food and beverage without imparting astringent taste and bitter taste more than necessary, and a method for improving the quality of taste in a food and beverage. [Means for Solving Problem] The fruit-based food and beverage containing a component derived from amla of the present invention comprises at least one selected from a group consisting of amla fruit, amla fruit juice and amla fruit extract.
    Type: Application
    Filed: December 17, 2012
    Publication date: December 10, 2015
    Inventors: Atsushi KOYANAGI, Keishi HARA
  • Patent number: 8696134
    Abstract: A depolarization element includes high depolarization for light beams having coherence and plural wavelengths and also provides a projection type display device capable of reducing speckle noise. Unit regions, each formed of m regions (m?4) having different phase differences generated for incident light, are disposed, and two regions extracted from the m regions have at least one combination of regions being different in area. When plural light beams having different wavelengths are incident, the composition of the Stokes vectors of the light beams emitted from the respective m regions is made nearly zero by setting the areas of the respective m regions and the generated phase differences, whereby the light beams having coherence and plural wavelengths can be converted so as to have the polarization state of natural light.
    Type: Grant
    Filed: March 8, 2012
    Date of Patent: April 15, 2014
    Assignee: Asahi Glass Company, Limited
    Inventors: Masahiro Murakawa, Atsushi Koyanagi
  • Publication number: 20130242365
    Abstract: A scanning display device includes: a light source section including at least one light source configured to emitting coherent light; a light scanning section including: a scan mirror configured to reflect the light originated from the light source section and scan over a screen; and a turning section configured to turn the scan mirror; a depolarizer having outgoing polarized light distribution in which a state of polarization of outgoing light consecutively changes within an element plane, wherein: the depolarizer is placed in an optical path along which the light emitted by the light source section reaches the screen; and the state of polarization of the light is changed, thereby scanning the screen with light that has a polarized light distribution, in which the state of polarization consecutively changes, in a beam diameter.
    Type: Application
    Filed: March 13, 2013
    Publication date: September 19, 2013
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventor: Atsushi KOYANAGI
  • Publication number: 20120236263
    Abstract: A depolarization element includes high depolarization for light beams having coherence and plural wavelengths and also provides a projection type display device capable of reducing speckle noise. Unit regions, each formed of m regions (m?4) having different phase differences generated for incident light, are disposed, and two regions extracted from the m regions have at least one combination of regions being different in area. When plural light beams having different wavelengths are incident, the composition of the Stokes vectors of the light beams emitted from the respective m regions is made nearly zero by setting the areas of the respective m regions and the generated phase differences, whereby the light beams having coherence and plural wavelengths can be converted so as to have the polarization state of natural light.
    Type: Application
    Filed: March 8, 2012
    Publication date: September 20, 2012
    Applicant: Asahi Glass Company, Limited
    Inventors: Masahiro MURAKAWA, Atsushi Koyanagi
  • Publication number: 20120147279
    Abstract: A projection display device includes: a light source unit including at least one light source configured to emit coherent light; an image light generation unit configured to generate an image light by modulating light emitted by the light source unit; a projection unit configured to project the image light; and a liquid crystal element, disposed in an optical path between the light source unit and the image light generation unit, configured to temporally change a phase and/or polarization of transmitted light, wherein: the liquid crystal element at least includes transparent electrodes respectively provided on opposing faces of a plurality of transparent substrates; a liquid crystal layer including smectic phase liquid crystal showing spontaneous polarization under voltage application is sandwiched between the transparent electrodes; and an AC voltage is applied to the liquid crystal layer through the transparent electrodes.
    Type: Application
    Filed: November 28, 2011
    Publication date: June 14, 2012
    Applicant: Asahi Glass Company, Limited
    Inventors: Atsushi KOYANAGI, Teppei Konishi, Hiroshi Kumai
  • Patent number: 8193628
    Abstract: A printed wiring board on which a package to be arranged, including: a first layer that is relatively rigid; and a second layer that is relatively flexible and on which the package is to be soldered, wherein an area other than a package arrangement area of the second layer is joined to the first layer by an adhesion layer.
    Type: Grant
    Filed: September 10, 2009
    Date of Patent: June 5, 2012
    Assignee: Ricoh Company, Ltd.
    Inventors: Toshihiko Makino, Atsushi Koyanagi
  • Publication number: 20120075539
    Abstract: A projection display device is provided with: a light source portion including at least one light source that emits coherent light; an image light generation portion that generates image light by modulating the light emitted by the light source portion; a projection portion that projects the image light; a liquid crystal scattering element that is disposed on an optical path between the light source portion and the image light generation portion and temporally changes scattering state for passing light; a transparent electrode formed on each of opposing surfaces of a plurality of transparent substrates of the liquid crystal scattering element; and a liquid crystal layer that is sandwiched between the transparent electrodes and has liquid crystal of a smectic phase having spontaneous polarization in voltage applied state, and is characterized in that an AC voltage is applied to the liquid crystal layer through the transparent electrode.
    Type: Application
    Filed: December 5, 2011
    Publication date: March 29, 2012
    Applicant: Asahi Glass Company, Limited
    Inventors: Teppei KONISHI, Atsushi Koyanagi, Ayako Tanaka, Hiroshi Kumai, Yoshiharu Ooi
  • Publication number: 20120062848
    Abstract: A projection type display apparatus includes: a light source section including at least one light source for emitting coherent light; an image light generating section for modulating the light emitted from the light source section so as to generate image light; a projection section for projecting the image light; and a depolarization element for transmitting the incident light in a state that a polarization state of at least a part of the light is changed, the depolarization being provided on an optical path of the light emitted from the light source section, wherein a plurality of unit regions having a particular shape are aligned in the depolarization element.
    Type: Application
    Filed: September 8, 2011
    Publication date: March 15, 2012
    Applicant: ASAHI GLASS COMPANY, LIMITED
    Inventors: Atsushi Koyanagi, Masahiro Murakawa
  • Patent number: 8040781
    Abstract: An optical rotating plate has an optical rotating material layer. A phase plate is provided on a first surface side of the optical rotating plate and has at least one birefringent material layer. The first surface side is disposed toward an emitting side of an optical path, thereby giving different phase differences to a first linearly polarized light group containing at least a linearly polarized light having a first wavelength and a second linearly polarized light group containing at least a linearly polarized light having a second wavelength which is different from the first wavelength.
    Type: Grant
    Filed: July 2, 2009
    Date of Patent: October 18, 2011
    Assignee: Asahi Glass Company, Limited
    Inventors: Yukihiro Tao, Hiromasa Sato, Atsushi Koyanagi, Koji Miyasaka
  • Publication number: 20100321627
    Abstract: A wavelength selective optical rotator includes a liquid crystal layer including a cholesteric-phase liquid crystal, wherein: when a first linearly polarized light having a wavelength ?1 is incident on the liquid crystal layer, the liquid crystal layer converts the first linearly polarized light into a second linearly polarized light is a different linearly polarized light from the first linearly polarized light and outputs the latter; and when a linearly polarized light having a wavelength ?2 that is longer than the wavelength ?1 is incident on the liquid crystal layer, the liquid crystal layer outputs the linearly polarized light without changing its polarization state substantially.
    Type: Application
    Filed: August 27, 2010
    Publication date: December 23, 2010
    Applicant: ASAHI GLASS CO., LTD.
    Inventor: Atsushi KOYANAGI