Wavelength converting element and method of manufacturing the same and light emitting device

摘要

There are provided: a wavelength conversion element capable of reducing the decrease in luminescence intensity with time and the melting of component materials upon irradiation with high-power excitation light, a method of manufacturing the same, and a light emitting device using the wavelength conversion element. A wavelength conversion element 10 is made of a phosphor powder 2 and a thermally conductive filler 3, both of which are dispersed in an inorganic binder 1, wherein a refractive index difference between the inorganic binder 1 and the thermally conductive filler 3 is 0.2 or less, with a volume ratio of a content of inorganic binder 1 to the content of thermally conductive filler 3 is 40:60 to 5:95.