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US 7,695,641 B2Granted
Organic/inorganic composite
AssigneeKRI, Inc.
InventorsHiroshi Mataki, Toshimi Fukui
Life of this patent
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AssigneeKRI, Inc.
InventorsHiroshi Mataki, Toshimi Fukui
Estimating the term…
The present invention provides an organic/inorganic composite containing a rare earth metal or/and Period IV transition metal in which the aforementioned rare earth metal or/and Period IV transition metal is doped at a high concentration, and control of quenching and optical transparency are assured thereby; and an optical amplifier, a light control optical element, and luminescent device utilizing the same. The organic/inorganic composite containing a rare earth metal or/and Period IV transition metal is one in which at least one species of rare earth metal or/and Period IV transition metal is dispersed in an organic polymer, with the aforementioned composite containing an optically transparent organic polymer and an inorganic dispersion phase comprising: (1) a rare earth metal and (2) another element coordinated thereto via an oxygen atom(s). The inorganic dispersion phase in which another metal coordinates to rare earth metal or/and Period IV transition metal via an oxygen atom(s) preferably has an average particle size ranging from 0.1 to 1000 nm. Preferably, the ratio of rare earth metal or/and Period IV transition metal when mathematically converted to solid content is 90 mass % or less of the total mass of the organic polymer and the rare earth metal dispersion phase.
An organic/inorganic composite comprising:
An optical amplifier having an optical waveguide for transmitting light of a specific wavelength or waveband (signal light) and light having a different wavelength or waveband therefrom (excitation light), in which intensity of the signal light is amplified by the excitation light,
A light control optical element comprising the an organic/inorganic composite, wherein the organic/inorganic composite comprises:
A luminescent device comprising a light emitting element and an organic/inorganic composite in which a rare earth metal luminescence material emitting light when excited by light generated by the light emitting element is dispersed in an organic polymer, the organic/inorganic composite comprising:
Dependencies are inferred from the claim text.