Title:
UPWARD CONVERTING MATERIAL FOR WAVELENGTH IN INFRARED AND VISIBLE RAY REGIONS
Document Type and Number:
Japanese Patent JP3529195
Kind Code:
B2
Abstract:
PURPOSE: To obtain a converting material having good conversion efficiency and sensitivity for IR ray in 1.3μm wavelength range for optical communication and 1.6μm range for inspection of optical fiber lines by using an upward converting material for IR and visible ray wavelengths containing Dy bromide.
CONSTITUTION: This upward converting material for IR and visible ray wavelengths contains at least Dy bromide or Dy bromide and Er or Er bromide as additives to give a function of absorption and luminescent center. The base material which stably includes these additives contains at least Y bromide or Y compd. containing no oxygen nor fluorine. Or, K may be used instead of Y or K may be added to Y. This upward converting material for IR and visible ray wavelengths is produced, for example, by the following method. Namely, DyBr3 and powders or elements of Er and Y are mixed in a specified compounding ratio and heated in a proper chamber for calcination. The calcining conditions are, for example, at 650 to 1200°C in a heating furnace for 10min to several tens hours.
Inventors:
Owaki, Junichi
Otsuka, Masaaki
Uko OU.
Otsuka, Masaaki
Uko OU.
Application Number:
JP14058195A
Publication Date:
May 24, 2004
Filing Date:
June 07, 1995
Export Citation:
Assignee:
SUMITA KOGAKU GLASS:KK
NIPPON TELEGR & TELEPH CORP <NTT>
NIPPON TELEGR & TELEPH CORP <NTT>
International Classes:
G01N21/01; G01J1/02; G01J1/58; G01N21/35; G01N21/359; G02F2/02; (IPC1-7): G02F2/02
Attorney, Agent or Firm:
萩原 亮一 （外１名）
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