Patents by Inventor Daichi Tokuyasu

Daichi Tokuyasu 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).

  • Concentrator photovoltaic device
    Patent number: 8748737
    Abstract: A concentrator photovoltaic device includes: an optical concentrator; a solar battery cell; a homogenizer; a sealant; and a light transmission preventing layer. The homogenizer has a trapezoidal shape in which a sectional area at the optical concentrator side is larger than a sectional area at the solar battery cell side, a relationship of nh>nf>nt is satisfied among a refractive index nh of the homogenizer, a refractive index nf of the sealant, and a refractive index nt of the light transmission preventing layer, a thickness (H) of the light transmission preventing layer is equal to or larger than 0.1 mm and equal to or smaller than 1.2 mm, and a relationship of 0.5?b/a<1.0 is satisfied between a height (b) of the light transmission preventing layer and a height (a) of the sealant at a position where the light transmission preventing layer is formed.
    Type: Grant
    Filed: May 18, 2011
    Date of Patent: June 10, 2014
    Assignee: Daido Tokushuko Kabushiki Kaisha
    Inventors: Hirokazu Nagai, Tomokazu Nakatani, Daichi Tokuyasu
  • CONCENTRATOR PHOTOVOLTAIC DEVICE
    Publication number: 20110284076
    Abstract: A concentrator photovoltaic device includes: an optical concentrator; a solar battery cell; a homogenizer; a sealant; and a light transmission preventing layer. The homogenizer has a trapezoidal shape in which a sectional area at the optical concentrator side is larger than a sectional area at the solar battery cell side, a relationship of nh>nf>nt is satisfied among a refractive index nh of the homogenizer, a refractive index nf of the sealant, and a refractive index nt of the light transmission preventing layer, a thickness (H) of the light transmission preventing layer is equal to or larger than 0.1 mm and equal to or smaller than 1.2 mm, and a relationship of 0.5?b/a<1.0 is satisfied between a height (b) of the light transmission preventing layer and a height (a) of the sealant at a position where the light transmission preventing layer is formed.
    Type: Application
    Filed: May 18, 2011
    Publication date: November 24, 2011
    Applicant: DAIDO TOKUSHUKO KABUSHIKI KAISHA
    Inventors: Hirokazu Nagai, Tomokazu Nakatani, Daichi Tokuyasu