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LIGHT EMITTING DEVICE 发明申请

2023-02-23 2340 456K 0

专利信息

申请日期 2025-06-27 申请号 US16227791
公开(公告)号 US20190198724A1 公开(公告)日 2019-06-27
公开国别 US 申请人省市代码 全国
申请人 NICHIA CORPORATION
简介 Provided is a light emitting device capable of realizing an excellent color rendering property. The light emitting device includes a first light emitting element having a light emission peak wavelength within a range of 400 nm or more and 490 nm or less, a second light emitting element having a different light emission peak wavelength from the first light emitting element within a range of 400 nm or more and 490 nm or less, a first fluorescent material that is excited by at least one of the first light emitting element and the second light emitting element and emits light having a light emission peak wavelength within a range of 500 nm or more and 540 nm or less, and a second fluorescent material that is excited by at least one of the first light emitting element and the second light emitting element and emits light having a light emission peak wavelength within a range of 600 nm or more and 680 nm or less, wherein the first fluorescent material is a Ce-activated aluminate fluorescent material containing Lu, Al, and Ga, and optionally at least one element selected from rare earth elements other than Lu.


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