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:
Mar. 11, 2008
Filed:
Sep. 20, 2005
Min-hsun Hsieh, Hsinchu, TW;
Chou-chih Yin, Hsinchu, TW;
Chun-chang Chen, Hsinchu, TW;
Jen-shui Wang, Hsinchu, TW;
Chia-fen Tsai, Hsinchu, TW;
Yi-ming Chen, Hsinchu, TW;
Min-Hsun Hsieh, Hsinchu, TW;
Chou-Chih Yin, Hsinchu, TW;
Chun-Chang Chen, Hsinchu, TW;
Jen-Shui Wang, Hsinchu, TW;
Chia-Fen Tsai, Hsinchu, TW;
Yi-Ming Chen, Hsinchu, TW;
Epistar Corporation, Hsinchu, TW;
Abstract
An illumination apparatus is disclosed in the invention. The illumination apparatus includes a cavity with a diffusion surface, a light source, a light-spreading device, and at least one optically-conditioning surface with a wavelike array formed thereon. The light-spreading device and the optically-conditioning surface spread the light generated by the light source. The light-spreading device includes a wing-shaped protrusion part, a light incident surface, a recess located away from the light incident surface, and an optically-conditioning surface including a wavelike array, wherein the wavelike array has a wavefront direction.