Patent ID: 8587190
Filing Date: 2013-11-19
Classification: H01L,H05B

Abstract:
1. An illumination device, comprising: an irradiation unit for irradiating light, the irradiation unit including a light emitting element and a plurality of fluorescent bodies excited by the light coming from the light emitting element to radiate light of different wavelengths, wherein the irradiation unit is configured to irradiate composite light of blue light having a half value width of from 20 nm to 40 nm and a peak wavelength in a wavelength range of from 440 nm to 465 nm, green light having a half value width of from 110 nm to 150 nm and a peak wavelength in a wavelength range of from 545 nm to 555 nm and red light having a half value width of from 80 nm to 110 nm and a peak wavelength in a wavelength range of from 630 nm to 650 nm, wherein the irradiation unit is configured such that, if the output value of the light in a wavelength range of from 435 nm to 465 nm is assumed to be 100%, the output value of the light having a wavelength of 490 nm falls in a range of from 46% to 56%, the output value of the light having a wavelength of 530 nm fails in a range of from 59% to 77% and the output value of the light having a wavelength of 630 nm falls in a range of from 75% to 98%, and wherein the irradiation unit is configured such that the ratio of the output value of the light having a wavelength of 630 nm to the output value of the light having a wavelength of 530 nm falls in a range of from 73% to 86%.