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. 23, 2013
Filed:
May. 28, 2009
Hideharu Osawa, Kyoto, JP;
Hideharu Osawa, Kyoto, JP;
Rohm Co., Ltd., Kyoto, JP;
Abstract
An LED lamp Aincludes a plurality of LED modulesand a hollow diffusion pipeaccommodating the LED modules. Each LED moduleincludes an LED, and a resin packagecovering the LED. The resin packageincludes a light emission surfaceopposed to the inner surfaceof the diffusion pipeand internally diffuses the light from the LEDto allow the light to be emitted from the light emission surface. The light emission surfaceand the inner surfaceof the diffusion pipeare spaced from each other by a distance that is smaller than the distance between the light emission surfaceand the LED. The arrangement reduces light distribution non-uniformity while increasing the amount of light emission.