Patents by Inventor Takashi GOKUDEN

Takashi GOKUDEN 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).

  • Wavelength conversion element, light source device, projector, and method of manufacturing wavelength conversion element
    Patent number: 11698579
    Abstract: A wavelength conversion element according to the present disclosure includes a substrate, a dichroic layer provided to a first surface of the substrate, an intermediate layer disposed so as to be opposed to the substrate via the dichroic layer, and a wavelength conversion layer disposed so as to be opposed to the dichroic layer via the intermediate layer, and configured to convert light in a first wavelength band into light in a second wavelength band. The dichroic layer has two or more types of refractive index layers having respective refractive indexes different from each other.
    Type: Grant
    Filed: March 11, 2021
    Date of Patent: July 11, 2023
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Koya Shiratori, Wataru Yasumatsu, Takashi Gokuden, Kunihiko Yano
  • WAVELENGTH CONVERSION ELEMENT, LIGHT SOURCE DEVICE, PROJECTOR, AND METHOD OF MANUFACTURING WAVELENGTH CONVERSION ELEMENT
    Publication number: 20210286253
    Abstract: A wavelength conversion element according to the present disclosure includes a substrate, a dichroic layer provided to a first surface of the substrate, an intermediate layer disposed so as to be opposed to the substrate via the dichroic layer, and a wavelength conversion layer disposed so as to be opposed to the dichroic layer via the intermediate layer, and configured to convert light in a first wavelength band into light in a second wavelength band. The dichroic layer has two or more types of refractive index layers having respective refractive indexes different from each other.
    Type: Application
    Filed: March 11, 2021
    Publication date: September 16, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Koya SHIRATORI, Wataru YASUMATSU, Takashi GOKUDEN, Kunihiko YANO