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:
Feb. 26, 2013
Filed:
Sep. 10, 2010
Wen-chiun Ing, Taipei County, TW;
Wei-hsin Hou, Taipei, TW;
Zhi-wei Koh, Hsinchu County, TW;
Chi-jen Kao, Taipei, TW;
Wen-Chiun Ing, Taipei County, TW;
Wei-Hsin Hou, Taipei, TW;
Zhi-Wei Koh, Hsinchu County, TW;
Chi-Jen Kao, Taipei, TW;
Luxingtek, Ltd., Hsinchu County, TW;
Abstract
A lighting device, a light spreading plate for the lighting device and a method for manufacturing the same are provided. The lighting device comprises a light source plate and the light spreading plate. The light source plate comprises a plurality of light sources. The light spreading plate comprises a light travelling layer formed with a plurality of light spreading units. Each of the light spreading units is formed with a main body being defined with a top surface, a bottom surface and a peripheral. The main body has a thickness being tapered towards the peripheral. The main body comprises a top surface having a cone-shaped recess and a bottom surface having a bowl-shaped recess. The cone-shaped recess and the bowl-shaped recess of each of the spreading units are opposite to each other, and one of the cone-shaped recess and bowl-shaped recess is fitted for one of the light sources.