US Patent 7470046 Backlight module and illumination device thereof

Patent 7470046 was granted and assigned to AU Optronics on December, 2008 by the United States Patent and Trademark Office.

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Patent Inventor Names

Chih-Kuang Cheng0

Jing-Huan Liao0

Jyh-Haur Huang0

Ko-Chia Kao0

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Patent abstract

A backlight module and an illumination device thereof. The illumination device of the backlight module comprises a light source and a lens, disposed over the light source with a predetermined gap therebetween. The lens comprises a bottom surface as an incident surface, a pair of upper refracting surfaces, and a pair of lateral refracting surfaces. The upper refracting surfaces form an included angle substantially in a range of about 80° to about 120°.

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Official Website

https://pdfpiw.uspto.gov/.piw?Docid=074700460

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