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:
Jun. 02, 2015
Filed:
Sep. 12, 2012
Cheng-hsuan Lin, Changhua County, TW;
Hsun-yu LI, Taichung, TW;
Ping-chen Chen, Taipei, TW;
Chun-hsiang Wen, Hsinchu, TW;
Cheng-Hsuan Lin, Changhua County, TW;
Hsun-Yu Li, Taichung, TW;
Ping-Chen Chen, Taipei, TW;
Chun-Hsiang Wen, Hsinchu, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
An illumination device including a base, at least one LED light source and a first diffusing element is provided. The base has a supporting plane. The LED light source disposed on the supporting plane has a light emitting surface substantially parallel to the supporting plane. The first diffusing element disposed on the supporting plane is a hollow column surrounding the LED light source. An inner diameter width of the first diffusing element is gradually reduced outward from the base. The first diffusing element has a rough surface comprising a plurality of surface structures.