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:
Nov. 03, 2015
Filed:
Sep. 16, 2013
Applicant:
Light Engine Limited, Hong Kong, CN;
Inventors:
Yuk Tsan Sy, Hong Kong, CN;
Wa Hing Leung, Hong Kong, CN;
Assignee:
Light Engine Limited, Hong Kong, CN;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F21V 5/00 (2015.01); F21V 13/04 (2006.01); F21V 7/04 (2006.01); F21V 5/08 (2006.01); F21W 131/103 (2006.01); F21Y 101/02 (2006.01);
U.S. Cl.
CPC ...
F21V 13/04 (2013.01); F21V 5/08 (2013.01); F21V 7/048 (2013.01); F21W 2131/103 (2013.01); F21Y 2101/02 (2013.01);
Abstract
A lens for an LED street lamp has an external curved surface that has a concave surface portion on one side thereof. A back surface of the lens has a micro-prism array and retainer feet. A recess in the back surface receives an LED light source. The outer surface of the lens has facets or windows that provide overlapping projections of light from adjacent facets. The lens is generally cushion shaped with an indentation at one side. The lens directs light in an asymmetrical distribution transverse to the lens and to direct light symmetrically over a wide area in a longitudinal direction of the lens.