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:
Mar. 04, 2008
Filed:
Aug. 01, 2006
Yasuyuki Amano, Shizuoka, JP;
Tsutomu Machida, Shizuoka, JP;
Hiroya Koizumi, Shizuoka, JP;
Koito Manufacturing Co., Ltd., Tokyo, JP;
Abstract
A light-emitting diode including a curved surface portionA formed in the front face of a sealing memberwith the cross-sectional shape of the curved surface portion being in the shape of an undulating curve that has a concave curve Cnear the optical axis and convex curves Con both sides of concave curve C, thus allowing the light emitted from a light-emitting chipat a small divergence angle centered on the optical axis Ax to reach the concave curve Cand to be directed forward as diffused light deflected from the optical axis and further allowing the light emitted at a large divergence angle centered on the optical axis Ax to reach the convex curves Cand to be directed forward as light deflected toward line L positioned at the divergence angle θ.