Wavelength conversion member, production method therefor, and light-emitting device
AssigneeNippon Electric Glass Co., Ltd.
InventorsShotaro FUKUMOTO, Shunsuke FUJITA
Life of this patent
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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.
Claims17
A wavelength conversion member comprising thermally conductive particles and phosphor particles, the thermally conductive particles including two types of thermally conductive particles different in average particle diameter from each other.
A wavelength conversion member containing phosphor particles and thermally conductive particles and having a thermal diffusivity of 2×10−6 m2/s or more.
A wavelength conversion member capable of converting a wavelength of excitation light emitted from a light source, wherein a sum of a variation in chromaticity Cx and a variation in chromaticity Cy of all light beams of a synthetic light of the excitation light having passed through the wavelength conversion member and light converted in wavelength from the excitation light and emitted from the wavelength conversion member is 0.03 or less.
Dependencies are inferred from the claim text.