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:
Aug. 07, 2007
Filed:
Jul. 14, 2006
Wen-bin Chou, Miao-Li Country, TW;
Tzeng-ke Shiau, Miao-Li Country, TW;
Teng-chao Hou, Miao-Li Country, TW;
Wen-Bin Chou, Miao-Li Country, TW;
Tzeng-Ke Shiau, Miao-Li Country, TW;
Teng-Chao Hou, Miao-Li Country, TW;
Coretronic Corporation, Chu-Nan, TW;
Abstract
A lens of a side emitting LED includes a bottom surface, an incident surface, a reflective surface, a first refractive surface, a second refractive surface and a third refractive surface. An light emitted by a LED enters the lens through the incident surface. A portion of the light is reflected by the reflective surface in an internal total reflection manner to the second refractive surface and emits out of the lens along a first optical path. The other portion of light directly emits out of the lens through the first refractive surface and the third refractive surface. A transitive surface is located between the first refractive surface and the reflective surface. Such a design allows the light entered the lens through the incident surface not cross with the transitive surface. Hence an improper reflection or refraction can be prevented.