LIGHT EMITTING DEVICE

To provide a light emitting device having a good color rendering property and a specific melanopic ratio.A light emitting device includes a light emitting element, and a fluorescent member including a phosphor. The light emitting device satisfies any of Condition (A): a correlated color temperature...

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Bibliographische Detailangaben
Hauptverfasser:	NAKANO Makoto, BANDO Atsushi
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	ADHESIVES BASIC ELECTRIC ELEMENTS BLASTING CHEMISTRY DYES ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMSTHEREOF HEATING LIGHTING MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FORELSEWHERE MECHANICAL ENGINEERING METALLURGY MISCELLANEOUS APPLICATIONS OF MATERIALS MISCELLANEOUS COMPOSITIONS NATURAL RESINS NON-PORTABLE LIGHTING DEVICES PAINTS POLISHES SEMICONDUCTOR DEVICES STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHERARTICLES, NOT OTHERWISE PROVIDED FOR SYSTEMS THEREOF VEHICLE LIGHTING DEVICES SPECIALLY ADAPTED FOR VEHICLEEXTERIORS WEAPONS
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Beschreibung
Zusammenfassung:	To provide a light emitting device having a good color rendering property and a specific melanopic ratio.A light emitting device includes a light emitting element, and a fluorescent member including a phosphor. The light emitting device satisfies any of Condition (A): a correlated color temperature of light emission of the light emitting device is within a range of 4500 K or more and 7500 K or less, a content of a first phosphor is within a range of 29 mass% or more and 90 mass% or less, and a melanopic ratio is within a range of 1.0 or more and 1.4 or less; Condition (B): a correlated color temperature of light emission of the light emitting device is within a range of 2500 K or more and less than 4500 K, a content of a first phosphor is within a range of 25 mass% or more and 90 mass% or less, and a melanopic ratio is within a range of 0.7 or more and 1.1 or less; and Condition (C): a correlated color temperature of light emission of the light emitting device is within a range of 2500 K or more and 3000 K or less, a content of a first phosphor is within a range of 20 mass% or more and 90 mass% or less, and a melanopic ratio is within a range of 0.48 or more and 1.10 or less.