Patent ID: 8908740

Claim:
A light emitting device comprising: a light source that emits excitation light; a light guide that propagates the excitation light, and in which the refractive index of the center part of a cross section is higher than the refractive index of the peripheral part; a light guide end member supporting an end of an emission side of the light guide and covering an outer circumference of the light guide; a wavelength conversion member including a fluorescent substance that absorbs the excitation light propagated by the light guide and converts the wavelength thereof, and releases light of a predetermined wavelength band; a shielding member that blocks the wavelength of at least part of the excitation light and the light emitted from the wavelength conversion member, the shielding member being disposed on a first side of the wavelength conversion member and the light guide being disposed on a second side of the wavelength conversion member that is different from the first side; and a reflection member that reflects at least part of the excitation light and the light emitted from the wavelength conversion member, the reflection member including a reflective film that reflects light of a predetermined wavelength band with the reflective film being formed at an end face of the light guide end member, wherein the wavelength conversion member is coupled to a tip end of the light guide on the second side of the wavelength conversion member with the reflection member being sandwiched between the light guide and the wavelength conversion member.