Light emitting diode illuminating device

A light emitting diode (LED) illumination device includes an LED, a frustum-shaped light guide member and a light diffusing plate. The frustum-shaped light guide member has a light input surface and a light output surface opposite to the light input surface. The light guide member tapers from the li...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	Tsao, Chih-Chung, Lin, Mei-Jiun, Yang, Hung-Chih, Fang, Jui-Wen, Hsieh, Shu-Hui, Lai, Chih-Ming
Format:	Patent
Sprache:	eng
Online-Zugang:	Volltext bestellen
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Beschreibung
Zusammenfassung:	A light emitting diode (LED) illumination device includes an LED, a frustum-shaped light guide member and a light diffusing plate. The frustum-shaped light guide member has a light input surface and a light output surface opposite to the light input surface. The light guide member tapers from the light output surface to the light input surface. The light input surface is optically coupled to the LED, and the light diffusing plate is optically coupled to the light output surface of the light guide member.