Patent ID: 9115855
Filing Date: 2015-08-25
Classification: C09K,F21K,H01L,H05B,Y02B

Abstract:
1. A white light source, comprising: a light-emitting diode; and a phosphor layer absorbing a light radiated from the light-emitting diode to emit a white light; the phosphor layer including a blue phosphor of from 30 to 60 mass %, a blue-green phosphor of from 5 to 20 mass %, at least one phosphor selected from a green phosphor and a yellow phosphor of from 3 to 20 mass %, and a red phosphor of from 20 to 50 mass %; the white light having a color temperature of 2600 [K] or more and less than 3200 [K] and an emission spectrum which has a wavelength region of from 450 to 610 [nm]; and a ratio of a minimum emission intensity to a maximum emission intensity in the wavelength region being 0.16 or more and less than 0.35.