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:
Aug. 11, 2009
Filed:
Mar. 06, 2008
Toshihiro Fukuda, Kanagawa, JP;
Jiro Yamada, Kanagawa, JP;
Nobutoshi Asai, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
Disclosed herein is a light emitting device, which includes a light emitting element configured to emit a light, and a concave mirror portion configured to reflect the light emitted from the light emitting element, the concave mirror portion being erected on a circumference of an emission surface of the light emitting element. The concave mirror portion has a light reflecting surface obtained by rotating a part of a parabola. A central axis of the rotation is set in a position of passing through a side of the parabola with respect to a middle point of a line segment joining the part of the parabola and a focal point of the parabola.