Invention Application
- Patent Title: LIGHT EMITTING DEVICE
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Application No.: US17929870Application Date: 2022-09-06
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Publication No.: US20230019657A1Publication Date: 2023-01-19
- Inventor: Makiko IWASA , Kazushige FUJIO
- Applicant: NICHIA CORPORATION
- Applicant Address: JP Anan-shi
- Assignee: NICHIA CORPORATION
- Current Assignee: NICHIA CORPORATION
- Current Assignee Address: JP Anan-shi
- Priority: JP2018-105560 20180531,JP2019-095441 20190521
- Main IPC: H01L33/50
- IPC: H01L33/50 ; A61L2/08 ; H01L33/56 ; H01L33/60

Abstract:
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.
Public/Granted literature
- US11990571B2 Light emitting device Public/Granted day:2024-05-21
Information query
IPC分类: