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. 30, 2015
Filed:
Aug. 23, 2013
Southern Taiwan University of Science and Technology, Tainan, TW;
Chih-Chieh Kang, Tainan, TW;
Jeng-Feng Lin, Yunlin County, TW;
Ching-Yu Chen, Taichung, TW;
Syue-An Ceng, Hsinchu County, TW;
Kai-Ming Chuang, Tainan, TW;
Yu-Rui Yang, Tainan, TW;
SOUTHERN TAIWAN UNIVERSITY OF SCIENCE AND TECHNOLOGY, Tainan, TW;
Abstract
An illumination apparatus includes a frame, an optical base plate, a light source and an optical film. The optical base plate is disposed in the frame and has a protrusion area at the center of the optical base plate. The protrusion area has at least a protrusion portion, which has at least a reflective surface. The reflective surface includes a plurality of inclined surfaces with different inclination angles. The light source is disposed in the frame and located adjacent to the periphery of the optical base plate. The light source is disposed corresponding to the reflective surface and has a plurality of light-emitting elements. Each light-emitting element has an optical axis direction, and the optical axis directions extend toward the protrusion area. The optical film is disposed at the frame, and the protrusion portion of the optical base plate protrudes toward the optical film.