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. 31, 2012
Filed:
Dec. 15, 2009
Michifumi Nagawa, Fujimi, JP;
Michifumi Nagawa, Fujimi, JP;
Seiko Epson Corporation, , JP;
Abstract
The light-emitting device of the present invention has a first cladding layer; an active layer formed above the first cladding layer; and a second cladding layer formed above the active layer, wherein the active layer has a first side surface, and a second side surface parallel to the first side surface; at least a portion of the active layer constitutes a gain region; the gain region has a first end surface disposed on the first side surface side and a second end surface disposed on the second side surface side, and extends from the first end surface to the second end surface in the direction inclined to the normal to the first side surface as viewed from above; the second end face is orthogonal to the direction in which the gain region extends as viewed from above; a reflecting part is disposed on the second end face; and a part of the light generated in the gain region is reflected in the reflecting part disposed on the second end face and is emitted from the first end surface.