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. 10, 2012
Filed:
Aug. 20, 2009
Yasushi Yatsuda, Tokyo, JP;
Yasushi Yatsuda, Tokyo, JP;
Stanley Electric Co., Ltd., Tokyo, JP;
Abstract
A vehicle lighting unit can include a first reflector surface and a second reflector surface disposed vertically with the optical axis of an LED light source interposed therebetween. The first reflecting surface and the second reflecting surface can form respective light distribution patterns. The first reflecting surface can include an edge near the projection lens formed in a substantially elliptic shape and designed so as to take an aberration of the projection lens into consideration. The edge can be disposed so as to coincide with a focus group of the projection lens. The second reflecting surface can be formed to have a substantially conical curved surface or a curved surface having at least a part of a cross section of a substantially conical curved surface. Direct light emitted from the LED light source and passing through/between the first reflecting surface and the second reflecting surface can form a light distribution pattern.