Light emitting device and illuminator using the same

摘要

The present invention relates to a light emitting device comprising:
a first light emitter emitting light of from 350 to 415 nm and
a second light emitter emitting visible light by exposure to the light from the first light emitter, wherein said second light emitter comprises a phosphor having a crystal phase having a chemical composition of the following formula [4]:
€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ€ƒ EU o M 8 p (PO 4 ) q (BO 3 ) 2-q Z r €ƒ€ƒ€ƒ€ƒ€ƒ[4]
(wherein, M 8 represents a metal element which contains Ca and 80 mol% or greater of which is composed of at least one element selected from the group consisting of Ca and Mg; Z represents an anionic group other than PO 4 3- and BO 3 3- ; o stands for a number satisfying 0.003‰¤o‰¤2.1, p stands for a number satisfying 2.7‰¤(o+p) ‰¤3.3, q stands for a number satisfying 1.2‰¤q‰¤2 and r stands for a number satisfying 0‰¤r‰¤0.1).