WAVELENGTH CONVERTER, LIGHT-EMITTING DEVICE USING SAME, AND PRODUCTION METHOD FOR WAVELENGTH CONVERTER
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United States of America Patent
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Apr 20, 2017
filing date -
Oct 24, 2014
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Abstract
A wavelength converter is provided with a light-transmitting substrate and with a thin film that is formed on a surface of the light-transmitting substrate and that contains a phosphor. A sintered body that constitutes the light-transmitting substrate has an average particle size of 5-40 μm. The light-transmitting substrate contains at least 10-500 ppm by mass of MgO. The principal component of the phosphor is an α-sialon that is indicated by the general formula (Caα,Euβ) (Si,Al)12(O,N)16 (provided that 1.5<α+β<2.2, 0<β<0.2, and O/N≦0.04).
First Claim
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International Classification(s)
- C09K:MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED ....
- C03C:CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREO....
- H01L:SEMICONDUCTOR DEVICES; ELECTRIC SOLID STATE DEVICE....
- C03B:MANUFACTURE OR SHAPING OF GLASS, OR OF MINERAL OR ....
- C04B:LIME; MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREO....
- G02B:OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS
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