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:
May. 10, 2011
Filed:
Feb. 12, 2007
Chih-chiang Chao, Taipei, TW;
Po-ling Shiao, Hsinchu, TW;
Yu-tsan Tseng, Taoyuan County, TW;
Cheng-hsuan Lin, Changhua County, TW;
Mei Chun Lai, Miaoli County, TW;
Chih-Chiang Chao, Taipei, TW;
Po-Ling Shiao, Hsinchu, TW;
Yu-Tsan Tseng, Taoyuan County, TW;
Cheng-Hsuan Lin, Changhua County, TW;
Mei Chun Lai, Miaoli County, TW;
Industrial Technology Research Institute, Hsinchu, TW;
Abstract
An optical diffusion module comprises a first diffusion structure comprising a plurality of convex portions and a plurality of concave portions arranged alternatingly, and a second diffusion structure comprising a plurality of convex portions and a plurality of concave portions arranged alternatingly. Light from a light source passes through the first diffusion structure and the second diffusion structure sequentially, and each convex portion is adjacent to a plurality of concave portions and each concave portion is adjacent to a plurality of convex portions, and the convex portions, the concave portions and each junction of the convex and concave portions have a curvature different from 0.