Patents by Inventor Yui Yokoyama

Yui Yokoyama 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).

  • OPTICAL LAMINATE AND FUNCTIONAL GLASS FOR HEAD-UP DISPLAY, AND HEAD-UP DISPLAY SYSTEM
    Publication number: 20230146122
    Abstract: The present disclosure relates to an optical laminate for a head-up display, including (A) at least one polyvinyl acetal resin layer having a photoelastic coefficient (PeA) in the range of the following Expression (1) and (B) at least one optical functional layer. Further, the present disclosure relates to functional glass for a head-up display including the optical laminate. and a head-up display including: the optical laminate or the functional glass. PeA ? 4.0 ? × ? 10 ? 11 Pa ? 1 ...
    Type: Application
    Filed: December 8, 2022
    Publication date: May 11, 2023
    Inventors: Chihiro TAKAHASHI, Yui YOKOYAMA
  • Light reflecting film, and light controlling film, optical film, functional glass and head-up display including the light reflecting film
    Patent number: 10241241
    Abstract: A light controlling film comprises a light reflecting film and a light controlling layer that are laminated. The light reflecting film comprises at least two laminated light reflecting layers including at least one of light reflecting layers PRL-1 to PRL-3 that a central reflection wavelength of 400 nm-500 nm, 500 nm-600 nm, and 600 nm-700 nm, respectively, and a reflectance to ordinary light at the central reflection wavelength of 5%-25%. The at least two light reflecting layers have central reflection wavelengths that are different from each other. All of the at least two laminated light reflecting layers have a property of reflecting polarized light having the same orientation. The light controlling layer comprises two quarter wave plates, and the light reflecting film is laminated so as to be interposed between the two quarter wave plates.
    Type: Grant
    Filed: October 8, 2015
    Date of Patent: March 26, 2019
    Assignee: NIPPON KAYAKU KABUSHIKI KAISHA
    Inventors: Kouichi Tanaka, Chihiro Takahashi, Yui Yokoyama, Tomoyuki Hayasaki
  • Light Reflecting Film, And Light Controlling Film, Optical Film, Functional Glass And Head-Up Display Including The Light Reflecting Film
    Publication number: 20170235030
    Abstract: A light controlling film comprises a light reflecting film and a light controlling layer that are laminated. The light reflecting film comprises at least two laminated light reflecting layers including at least one of light reflecting layers PRL-1 to PRL-3 that a central reflection wavelength of 400 nm-500 nm, 500 nm-600 nm, and 600 nm-700 nm, respectively, and a reflectance to ordinary light at the central reflection wavelength of 5%-25%. The at least two light reflecting layers have central reflection wavelengths that are different from each other. All of the at least two laminated light reflecting layers have a property of reflecting polarized light having the same orientation. The light controlling layer comprises two quarter wave plates, and the light reflecting film is laminated so as to be interposed between the two quarter wave plates.
    Type: Application
    Filed: October 8, 2015
    Publication date: August 17, 2017
    Inventors: Kouichi Tanaka, Chihiro Takahashi, Yui Yokoyama, Tomoyuki Hayasaki