Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Jui-Wen Fang0
Hung-Chih Yang0
Shu-Hui Hsieh0
Mei-Jiun Lin0
Chih-Chung Tsao0
Chih-Ming Lai0
Date of Patent
November 23, 2010
Patent Application Number
12057720
Date Filed
March 28, 2008
Patent Primary Examiner
Patent abstract
A light emitting diode (LED) illumination device (10) includes an LED (11), a frustum-shaped light guide member (12) and a light diffusing plate (13). The frustum-shaped light guide member (12) has a light input surface (120) and a light output surface (122) opposite to the light input surface (120). The light guide member (12) tapers from the light output surface (122) to the light input surface (120). The light input surface (120) is optically coupled to the LED (11), and the light diffusing plate (13) is optically coupled to the light output surface (122) of the light guide member (12).
Timeline
No Timeline data yet.
Further Resources
No Further Resources data yet.
