| 简介 |
PROBLEM TO BE SOLVED : To provide a light-emitting device having an excellent color rendering property.
SOLUTION : A light-emitting device 100 comprises : a light-emitting element 10 having a light emission peak wavelength in a range of 440 nm or longer and 460 nm or shorter; and a fluorescent member. The fluorescent member has, as a phosphor : a first phosphor 71 having a light emission peak wavelength in a range of 440 nm or longer and 550 nm or shorter, and including at least one of an alkaline earth metal aluminate activated by Eu, and a silicate activated by Eu and having, in its composition, Ca, Mg and Cl; a second phosphor 72 having a light emission peak wavelength in a range of 500 nm or longer and 600 nm or shorter and including a rare earth aluminate activated by Ce; a third phosphor 73 having a light emission peak wavelength in a range of 610 nm or longer and 650 nm or shorter and including a silicon nitride activated by Eu and having, in its composition, at least one of Sr and Ca, and Al; and a fourth phosphor 74 having a light emission peak wavelength in a range of 650 nm or longer and 670 nm or shorter and including a fluorogermanate activated by Mn.
SELECTED DRAWING : Figure 1
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