Illumination apparatus

An illumination apparatus includes a first LED, a second LED, and a control unit. The first LED emits white light. The second LED emits white light having a correlated color temperature lower than that of the white light emitted from the first LED and a chromaticity deviation Duv higher than that of...

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Bibliographische Detailangaben
Hauptverfasser:	Matsubayashi Yoko, Himeno Tohru
Format:	Patent
Sprache:	eng
Schlagworte:	BLASTING ELECTRIC HEATING ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR ELECTRICITY HEATING INDEXING SCHEME ASSOCIATED WITH SUBCLASSES F21K, F21L, F21Sand F21V, RELATING TO THEFORM OR THE KIND OF THE LIGHT SOURCES OR OF THE COLOUR OF THELIGHT EMITTED LIGHT SOURCES NOT OTHERWISE PROVIDED FOR LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATINGELEMENTS LIGHTING MECHANICAL ENGINEERING NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE WEAPONS
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Beschreibung
Zusammenfassung:	An illumination apparatus includes a first LED, a second LED, and a control unit. The first LED emits white light. The second LED emits white light having a correlated color temperature lower than that of the white light emitted from the first LED and a chromaticity deviation Duv higher than that of the white light emitted from the first LED. The control unit changes a light output ratio of the first LED and the second LED. The first LED emits the white light of the correlated color temperature ranging from 1563K to 4500K and the chromaticity deviation Duv ranging from −1.6 to −12. The second LED emits the white light of the correlated color temperature ranging from 1563K to 4500K and the chromaticity deviation Duv ranging from +10 to −1.6.