Patents by Inventor Koichi IYAMA

Koichi IYAMA 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: 10862261
    Abstract: A laser medium unit includes: a plate-shaped laser gain medium which includes a first surface and a second surface opposite to the first surface and generates emission light by the irradiation of excitation light from the first surface; a reflection member that is provided on the second surface so as to reflect the excitation light and the emission light; and a cooling member that cools the laser gain medium. The laser gain medium includes an irradiation area which is irradiated with the excitation light and an outer area which is located outside the irradiation area when viewed from a thickness direction intersecting the first surface and the second surface. The cooling member is thermally connected to the second surface through the reflection member so that a cooling area of the laser gain medium is formed on the second surface.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: December 8, 2020
    Assignee: HAMAMATSU PHOTONICS K.K.
    Inventors: Kenichi Ueda, Koichi Iyama, Yoshinori Kato, Takashi Sekine, Toshiyuki Kawashima
  • Patent number: 10826263
    Abstract: A laser medium unit includes: a plate-shaped laser gain medium which includes a first surface and a second surface opposite to the first surface and generates emission light by the irradiation of excitation light from the first surface; a reflection member that is provided on the second surface so as to reflect the excitation light and the emission light; and a cooling member that cools the laser gain medium. The laser gain medium includes an irradiation area which is irradiated with the excitation light and an outer area which is located outside the irradiation area when viewed from a thickness direction intersecting the first surface and the second surface. The cooling member is thermally connected to the second surface through the reflection member so that a cooling area of the laser gain medium is formed on the second surface.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: November 3, 2020
    Assignee: Hamamatsu Photonics K.K.
    Inventors: Kenichi Ueda, Koichi Iyama, Yoshinori Kato, Takashi Sekine, Toshiyuki Kawashima
  • Publication number: 20190372296
    Abstract: A laser device includes a first laser medium and a second laser medium that have a first surface and a second surface opposite to the first surface, and receive input of excitation light and seed light from the first surface side to amplify the seed light, a holder that holds the first laser medium and the second laser medium; and a pair of cooling units that cool the first laser medium and the second laser medium according to change in volume of a refrigerant.
    Type: Application
    Filed: May 29, 2019
    Publication date: December 5, 2019
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Koichi IYAMA, Yasuki TAKEUCHI, Yuma HATANO, Takaaki MORITA, Takuto IGUCHI, Yoshinori KATO, Takashi SEKINE
  • Publication number: 20190356105
    Abstract: A laser medium unit includes: a plate-shaped laser gain medium which includes a first surface and a second surface opposite to the first surface and generates emission light by the irradiation of excitation light from the first surface; a reflection member that is provided on the second surface so as to reflect the excitation light and the emission light; and a cooling member that cools the laser gain medium. The laser gain medium includes an irradiation area which is irradiated with the excitation light and an outer area which is located outside the irradiation area when viewed from a thickness direction intersecting the first surface and the second surface. The cooling member is thermally connected to the second surface through the reflection member so that a cooling area of the laser gain medium is formed on the second surface.
    Type: Application
    Filed: February 5, 2018
    Publication date: November 21, 2019
    Applicant: HAMAMATSU PHOTONICS K.K.
    Inventors: Kenichi UEDA, Koichi IYAMA, Yoshinori KATO, Takashi SEKINE, Toshiyuki KAWASHIMA