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LIGHT EMITTING DEVICE
专利权人:
NICHIA CORPORATION
发明人:
Makiko IWASA,Kazushige FUJIO
申请号:
US16426918
公开号:
US20190371978A1
申请日:
2019.05.30
申请国别(地区):
US
年份:
2019
代理人:
摘要:
A light emitting device includes a light emitting element having an emission peak wavelength in a range of 380 nm to 420 nm and a fluorescent member including at least one fluorescent material that is excited by light from the light emitting element for light emission, wherein a mixture of light from the light emitting element and light from the fluorescent material has a correlated color temperature in a range of 2000 K to 7500 K as measured according to JIS Z8725, and the light emitting device has a spectral distribution in which, when the integral value over a wavelength range of 380 nm to 780 nm is normalized to 100%, the proportion of an integral value over a wavelength range of 380 nm to 420 nm is 15% or more, and the ratio a as defined by the expression (1) is 0.9 or more and 1.6 or less.
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中国工程科技知识中心
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