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US Patent 7837350 Light emitting diode illuminating device

Patent 7837350 was granted and assigned to Foxsemicon Integrated Technology on November, 2010 by the United States Patent and Trademark Office.

Overview Structured Data Issues Contributors

Is a

Patent

Patent attributes

Current Assignee

Foxsemicon Integrated Technology

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

7837350

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

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Ali Alavi

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).