Patent ID: 8786172
Filing Date: 2014-07-22
Classification: B32B,C04B,C09K,H01L,H05B,Y10T

Abstract:
1. A plate-shaped fluorescent member configured to convert a wavelength of light emitted by a semiconductor light emitting element, wherein the fluorescent member is formed of an inorganic material having a refractive index of at least 1.5 and a light transmittance at the emission peak wavelength of the semiconductor light emitting element of less than 20%, and wherein a concave portion is formed, of surfaces of the fluorescent member, on a surface on a side where the light in the semiconductor light emitting element is mainly emitted, a depth of the concave portion is at least 5 μm, the concave portion comprises a plurality of scattered holes, and a thickness of the fluorescent member at a bottom of the concave portion is 90 μm or less.