公开(公告)号：EP3933256A1

公开(公告)日：2022-01-05

申请号：EP20763428.8

申请日：2020-02-28

申请人： Kyocera Corporation

发明人： HIRABAYASHI, Tsuneyuki ,  KATOU, Hidetaka ,  KUSANO, Tamio ,  MIYAKE, Akira ,  KOHEI, Ikeda

IPC分类号： F21S2/00 ,  F21L4/00 ,  F21V9/38 ,  G02B5/20 ,  H01L33/00 ,  H01L33/50 ,  F21W131/40 ,  F21Y115/10

摘要： A light emitting device emits light that is specified by an emission spectrum having a first peak wavelength, a second peak wavelength, a third peak wavelength, and a fourth peak wavelength. The first peak wavelength is included in a wavelength range of 600 nm to 660 nm. The second peak wavelength is included in a wavelength range of 510 nm to 550 nm. The third peak wavelength is included in a wavelength range of 440 nm to 470 nm. The fourth peak wavelength is included in a wavelength range of 360 nm to 430 nm. When a light intensity at the first peak wavelength is assumed to be 1, a relative light intensity at the second peak wavelength is greater than or equal to 0.75 and less than or equal to 0.98. A relative light intensity at the third peak wavelength is greater than or equal to 0.55 and less than or equal to 0.95. A relative light intensity at the fourth peak wavelength is greater than or equal to 0.50 and less than or equal to 0.85.