Patents by Inventor Mizuha HIROKI

Mizuha HIROKI 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: 20210294192
    Abstract: A wavelength conversion element according to the present disclosure includes a substrate, a reflecting layer, a wavelength conversion layer which is disposed on the reflecting layer, and which is configured to convert light in a first wavelength band into light in a second wavelength band, a structure which is disposed on the wavelength conversion layer, and which is configured to scatter the light in the first wavelength band, and an optical layer which is disposed on the structure, and which is configured to reflect a part of the light in the first wavelength band, transmit another part of the light in the first wavelength band, and transmit the light in the second wavelength band, wherein the optical layer is different in reflectance with respect to the light in the first wavelength band in accordance with an incidence angle of the light in the first wavelength band entering the optical layer.
    Type: Application
    Filed: March 22, 2021
    Publication date: September 23, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Koya SHIRATORI, Mizuha HIROKI, Ryuta KOIZUMI, Tetsuo SHIMIZU
  • Publication number: 20210297641
    Abstract: The wavelength conversion element according to the present disclosure includes a wavelength conversion layer which has a first surface and a second surface different from the first surface, and which includes a scattering element no higher than 5% in volume ratio, and which is configured to convert light in a first wavelength band into light in a second wavelength band different from the first wavelength band, and a plurality of protruding parts which is disposed so as to be opposed to the first surface, and which includes a first protruding part and a second protruding part adjacent to each other. A height of the plurality of protruding parts is no smaller than 1 ?m, and a distance between a vertex of the first protruding part and a vertex of the second protruding part in a direction along the first surface is no smaller than 3 ?m.
    Type: Application
    Filed: March 17, 2021
    Publication date: September 23, 2021
    Applicant: SEIKO EPSON CORPORATION
    Inventors: Shinichi Yotsuya, Tetsuo Shimizu, Ryuta Koizumi, Mizuha Hiroki