Patents by Inventor Shotaro FUKUMOTO

Shotaro FUKUMOTO 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: 11530798
    Abstract: The purpose is to provide a wavelength conversion member, a method for manufacturing the wavelength conversion member, and a light-emitting device, which are capable of reducing the temperature rise of the wavelength conversion member and thus reducing the decrease in luminescence intensity with time and deformation and discoloration of constituent materials. A wavelength conversion member 10 includes a matrix 1 and phosphor particles 3 dispersed in the matrix 1, wherein the matrix 1 is formed of a porous oxide body 2 having an average pore diameter of 50 ?m or less.
    Type: Grant
    Filed: April 6, 2020
    Date of Patent: December 20, 2022
    Assignee: NIPPON ELECTRIC GLASS CO., LTD.
    Inventors: Shotaro Fukumoto, Shunsuke Fujita
  • Publication number: 20220376146
    Abstract: Provided are a wavelength conversion member, a light-emitting element, and a light-emitting device which have high heat dissipation capability and are capable of reducing the decrease in luminescence intensity caused by increased output of an excitation light source. A wavelength conversion member 10 includes a matrix 2 and an inorganic phosphor 1 contained in the matrix 2 and has a relative density of 90% or more, a thermal conductivity of 10 W/m·K or more, and a quantum efficiency of 50% or more.
    Type: Application
    Filed: December 22, 2020
    Publication date: November 24, 2022
    Inventors: Shotaro FUKUMOTO, Shunsuke FUJITA
  • Publication number: 20220187519
    Abstract: The purpose is to provide a wavelength conversion member, a method for producing the wavelength conversion member, and a light-emitting device, which are capable of reducing the temperature rise of the wavelength conversion member and thus reducing the decrease in luminescence intensity with time and deformation and discoloration of constituent materials. A wavelength conversion member 10 includes thermally conductive particles 1 and phosphor particles 4 and the thermally conductive particles 1 include two types of thermally conductive particles different in average particle diameter from each other.
    Type: Application
    Filed: April 6, 2020
    Publication date: June 16, 2022
    Inventors: Shotaro FUKUMOTO, Shunsuke FUJITA
  • Publication number: 20220163187
    Abstract: The purpose is to provide a wavelength conversion member, a method for manufacturing the wavelength conversion member, and a light-emitting device, which are capable of reducing the temperature rise of the wavelength conversion member and thus reducing the decrease in luminescence intensity with time and deformation and discoloration of constituent materials. A wavelength conversion member 10 includes a matrix 1 and phosphor particles 3 dispersed in the matrix 1, wherein the matrix 1 is formed of a porous oxide body 2 having an average pore diameter of 50 ?m or less.
    Type: Application
    Filed: April 6, 2020
    Publication date: May 26, 2022
    Inventors: Shotaro FUKUMOTO, Shunsuke FUJITA
  • Publication number: 20220011483
    Abstract: The present invention has an object of providing a wavelength conversion member and a light emitting device which have a high luminescence intensity. A wavelength conversion member 10 contains phosphor particles 2 in a matrix 1 and has a haze value of 0.7 to 0.999 in a visible wavelength range where an excitation spectrum of the phosphor particles 2 shows a spectral intensity of 5% or less of a maximum peak intensity.
    Type: Application
    Filed: December 19, 2019
    Publication date: January 13, 2022
    Inventors: Shotaro FUKUMOTO, Tadahito FURUYAMA, Shunsuke FUJITA
  • Publication number: 20210231294
    Abstract: The present invention has an object of providing: a wavelength conversion member and a wavelength conversion element which are capable of reducing the decrease in luminescence intensity with time and the melting of component materials when irradiated with high-power LED or LD light; manufacturing methods of the wavelength conversion member and the wavelength conversion element; and a light-emitting device. A wavelength conversion member 10 containing a matrix 1 and phosphor particles 2 dispersed in the matrix 1, the matrix 1 comprising: a skeleton made of an inorganic material 3; and a transparent material 4 filled in a hole formed by the skeleton, the inorganic material 3 having a higher thermal conductivity than the transparent material 4.
    Type: Application
    Filed: May 24, 2019
    Publication date: July 29, 2021
    Inventors: Shotaro FUKUMOTO, Tadahito FURUYAMA, Shunsuke FUJITA
  • Publication number: 20200407269
    Abstract: Provided is a wavelength conversion member which is made of a phosphor powder dispersed in a glass matrix and has an excellent luminous efficiency. A wavelength conversion member is comprising: a phosphor powder dispersed in a glass matrix, wherein the glass matrix has a refractive index (nd) of 1.6 or more and a liquidus temperature of 1070° C. or below.
    Type: Application
    Filed: March 25, 2019
    Publication date: December 31, 2020
    Inventors: Tadahito FURUYAMA, Shotaro FUKUMOTO