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White light emitting device with adapted melatonin secretion
White light emitting device with adapted melatonin secretion
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机译:具有褪黑激素分泌适应性的白光发射装置
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摘要
A light emitting device according to embodiments includes a light emitting diode, emitting light with a peak wavelength of 420 - 445 nm, a first blue phosphor emitting light with a peak wavelength of 485 - 530 nm, a second green phosphor emitting light with a peak wavelength of 530-580 nm, and a third red phosphor emitting light with a peak wavelength of 600 - 650 nm. The device emits light having an emission spectrum that has a local minimum value of light intensity between a wavelength of 450 - 470 nm to reduce altered melatonin secretion. The local minimum value being 60% or less of a maximum value of light intensity at a longer wavelength side from the local minimum value, and the device emits light having a color temperature of 4600 K or higher and 5400 K or less.
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