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:
Apr. 30, 2013
Filed:
Dec. 28, 2011
Shikang Zhou, Shanghai, CN;
Xin Cheng, Shanghai, CN;
Mengsheng Wang, Shanghai, CN;
Yuexia Chen, Shanghai, CN;
Shikang Zhou, Shanghai, CN;
Xin Cheng, Shanghai, CN;
Mengsheng Wang, Shanghai, CN;
Yuexia Chen, Shanghai, CN;
Shanghai Sansi Electronics Engineering Co., Ltd., Minhang District, Shanghai, CN;
Shanghai Sansi Technology Co., Ltd., Minhang District, Shanghai, CN;
Jiashan Sansi Photoelectric Technology Co., Ltd., Jiaxing, Zhejiang Province, CN;
Abstract
A dustproof lens for an LED road lamp has an incident surface and an exit surface. The exit surface is flat. The incident surface is saddle-shaped and has a section in a shape of a concave curve along a road direction and in a shape of a convex curve vertically to the road direction. A lens module thereof has the dustproof lenses jointed with each other and has an integrally flat exit plane. The dustproof lens and its module, while meeting requirements in distributing lights for road lighting, adopt a flat surface for emitting lights, in such a manner that the lens is protected from dusts piled up thereon, can be cleaned simply, and is better fit for using. By accomplishing modularization of the lens module in production and assembly, a productive efficiency of lamps is greatly improved.