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Light emitting device 发明授权

2023-01-17 3880 862K 0

专利信息

申请日期 2025-08-07 申请号 JP2017092899
公开(公告)号 JP6477779B2 公开(公告)日 2019-03-06
公开国别 JP 申请人省市代码 全国
申请人 日亜化学工業株式会社
简介 To provide a light-emitting device having excellent color rendering properties.SOLUTION : A light-emitting device comprises a light-emitting element having an emission peak wavelength in a range of 410 nm to 440 nm inclusive, and a fluorescent member. The fluorescent member includes as a fluorescent substance : a first fluorescent substance having an emission peak wavelength in 430 nm to 500 nm inclusive with a half-width of 29 nm to 49 nm inclusive; a second fluorescent substance having an emission peak wavelength in 440 nm to 550 nm inclusive with a half-width of 58 nm to 78 nm inclusive or 50 nm to 75 nm inclusive; a third fluorescent substance having an emission peak wavelength in 500 nm to 600 nm inclusive with a half-width of 95 nm to 115 nm inclusive; a fourth fluorescent substance having an emission peak wavelength in 610 nm to 650 nm inclusive with a half-width of 80 nm to 100 nm inclusive; and a fifth fluorescent substance having an emission peak wavelength in 650 nm to 670 nm inclusive with a half-width of 45 nm or less.SELECTED DRAWING : Figure 1


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