Patents Assigned to MASAHIRO NAKATSUKA
  • Glass composition that emits fluorescence in infrared wavelength region
    Publication number: 20060001005
    Abstract: The present invention provides a glass composition that exhibits a fluorescence function and an optical amplification function in a wide wavelength range. This glass composition includes a bismuth oxide, a silicon oxide, an aluminum oxide, and a divalent metal oxide, and the glass composition emits fluorescence in an infrared wavelength region through irradiation of excitation light, with bismuth contained in the bismuth oxide functioning as a fluorescent source.
    Type: Application
    Filed: June 22, 2005
    Publication date: January 5, 2006
    Applicants: NIPPON SHEET GLASS COMPANY, LIMITED, YASUSHI FUJIMOTO, MASAHIRO NAKATSUKA
    Inventors: Shoichi Kishimoto, Koichi Sakaguchi, Masahiro Tsuda, Shigeki Nakagaki, Shigekazu Yoshii, Yasushi Fujimoto, Masahiro Nakatsuka