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LIGHT EMITTING DEVICE 发明申请

2023-10-30 3200 508K 0

专利信息

申请日期 2025-06-25 申请号 US16276281
公开(公告)号 US20190181308A1 公开(公告)日 2019-06-13
公开国别 US 申请人省市代码 全国
申请人 NICHIA CORPORATION
简介 A light emitting device that is capable of achieving excellent color rendering property is provided. The light emitting device contains a light emitting element having a light emission peak wavelength within a range of 430 nm or more and 470 nm or less, and a fluorescent member. The fluorescent member contains a first fluorescent material that contains an Eu-activated alkaline earth aluminate, a second fluorescent material that contains a Mn-activated fluorogermanate, a third fluorescent material that contains a Ce-activated rare earth aluminate, and a fourth fluorescent material that contains an Eu-activated silicon nitride having Al and at least one of Sr and Ca.


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