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:
Sep. 16, 2014
Filed:
Oct. 19, 2012
Leotek Electronics Corporation, Lung-Tan, TW;
Chen-Ho Wu, Los Altos Hills, CA (US);
Chin-Wang Tu, Cupertino, CA (US);
Shih-Chang Wang, Jhonghe District, TW;
Yi-Kai Cheng, Zhongshan District, TW;
Shu-Chun Chang, Xinshe District, TW;
Bing-Yu Wu, West District, TW;
Leotek Electronics Corporation, Lung-Tan, Tao Yuan County, TW;
Abstract
A traffic signal light device that includes a spread window, a Fresnel lens, and an LED module for emitting light. The light emitted by the LED module passes through the Fresnel lens and to the spread window. The LED module is disposed at a position that is offset from an axis of the spread window that passes through a center of, and is perpendicular to, the spread window. The Fresnel lens can have a saw-toothed pattern of teeth formed as concentric circles on one surface of the Fresnel lens sharing a common center, where the size or height of the teeth vary. The spread window can have a plurality of protruding cells of varying size on a surface of the spread window.