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A platform for research: civil engineering, architecture and urbanism
Light emitting device with oxynitride phosphors
A light emitting device according to embodiments includes a light emitting element emitting light with a peak wavelength of 420˜445 nm, a first phosphor emitting light with a peak wavelength of 485˜530 nm, a second phosphor emitting light with a peak wavelength of 530˜580 nm, and a third 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 or less, 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.
Light emitting device with oxynitride phosphors
A light emitting device according to embodiments includes a light emitting element emitting light with a peak wavelength of 420˜445 nm, a first phosphor emitting light with a peak wavelength of 485˜530 nm, a second phosphor emitting light with a peak wavelength of 530˜580 nm, and a third 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 or less, 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.
Light emitting device with oxynitride phosphors
HATTORI YASUSHI (author) / KATO MASAHIRO (author) / ISHIDA KUNIO (author) / NUNOUE SHINYA (author) / FUKUDA YUMI (author)
2016-05-24
Patent
Electronic Resource
English
IPC:
H01L
Halbleiterbauelemente
,
SEMICONDUCTOR DEVICES
/
C04B
Kalk
,
LIME
/
C09K
Materialien für Anwendungen, soweit nicht anderweitig vorgesehen
,
MATERIALS FOR APPLICATIONS NOT OTHERWISE PROVIDED FOR
/
F21K
Nicht-elektrische Lichtquellen unter Verwendung von Lumineszenz
,
NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE
/
H05B
ELECTRIC HEATING
,
Elektrische Heizung
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