The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 24, 2012
Filed:
Sep. 10, 2009
Yan-zuo Chen, Taoyuan County, TW;
Wen-feng Cheng, Taoyuan County, TW;
Li-ping Cho, Taoyuan County, TW;
Yan-Zuo Chen, Taoyuan County, TW;
Wen-Feng Cheng, Taoyuan County, TW;
Li-Ping Cho, Taoyuan County, TW;
Entire Technology Co., Ltd., Taoyuan County, TW;
Abstract
An optical sheet receiving an incident light from a light source is provided. The optical sheet includes a body, a plurality of reflective structures, and a plurality of Fresnel lens units. The body includes an incident surface and an emergent surface. The incident surface receives the incident light with an incident angle. The refractive index of the body is nand i is a positive integer. The reflective structures are placed on the body. There is a spacing W between two neighboring reflective structures. In the direction of the incident light, the thickness of the reflective structure is t. The Fresnel lens units, having a width P, are disposed on the emergent surface. Each Fresnel lens is corresponded to the spacing. When the equation, is satisfied, the incident light passes through the spacing, the incident angle is adjusted by the thickness t and converged by the Fresnel lens units.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile