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:
Jan. 06, 2009
Filed:
Oct. 11, 2005
Masaaki Katoh, Osaka, JP;
Masatoshi Omoto, Osaka, JP;
Masataka Miyata, Yamatotakada, JP;
Keiji Takasugi, Yamatokooriyama, JP;
Masahiro Seko, Kitakatsuragi-Gun, JP;
Masaaki Katoh, Osaka, JP;
Masatoshi Omoto, Osaka, JP;
Masataka Miyata, Yamatotakada, JP;
Keiji Takasugi, Yamatokooriyama, JP;
Masahiro Seko, Kitakatsuragi-Gun, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An LED lamp has a convex lens 3 which has an upper portionand a lower portion. An upper curved surfaceA of the upper portion is different in shape from a lower curved surfaceA of the lower portionso as to refract rays of light from an LED chipmore strongly than the lower curved surfaceA does. This avoids reflection of incident outside light toward a front and hence prevents misrecognition. An interface plane Sbetween the upper and lower portionsandof the convex lensis located on an upper end faceA to thereby prevent collection of outgoing light upon the interface plane Sand generation of an irregular emission peak at the front.