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. 08, 2010
Filed:
Nov. 02, 2007
Tomoaki Ieda, Osaka, JP;
Hiroyuki Sasai, Osaka, JP;
Tomoaki Ieda, Osaka, JP;
Hiroyuki Sasai, Osaka, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A plurality of first refraction surfacesand a plurality of second refraction surfacesare alternately provided on an emission surface of a lens elementso as to form concentric circles each having an optical axisat the center thereof, and having diameters different from each other, and a light reflected by a plurality of reflection surfacesprovided on an incident surface of the lens element so as to form concentric circuits each having the optical axisat the center thereof and having diameters different from each other, is refracted and emitted by the plurality of second refraction surfacesat desired angles. Therefore, it is possible to enhance efficiency and an emission intensity, and reduce variations in brightness of an emitted light without increasing the diameter of the lens element, thereby realizing a light emitting moduleenabling advantageous performance.