Semiconductor light emitting device provided with an alkaline earth metal boric halide phosphor for luminescence conversion

A light emitting device comprising;

• a semiconductor light emitting element of which luminescence spectrum is located between a near ultraviolet region and a short-wavelength visible region,
• a first phosphor which converts a part of a luminescence spectrum emitted from the semiconductor light emitting element, said first phosphor being made by adding an activator for red light emission to a base material of a blue emitting phosphor,
• a second phosphor which can convert a part of the light emitted from the first phosphor to a light having a wavelength in a range from blue region to red region,
• wherein a mixed light of the light emitted from the first phosphor and the light emitted from the second phosphor is outputted, said mixed light having a wavelength within a range of white region,
• wherein said first phosphor is represented by a general formula of (M1−x−yEuxM′y)2B5O9M″,
• where M is at least one selected from the group consisting of Mg, Ca, Ba, Sr, M′ is at least one selected from the group consisting of Mn, Fe, Cr, Sn, 0.0001≦x≦0.5, 0.0001≦y≦0.5, and M″ is at least one halogen selected from the group consisting of F, Cl, Br, I.