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:
Feb. 26, 2013
Filed:
Jun. 28, 2006
Osamu Maeda, Kanagawa, JP;
Masaki Shiozaki, Kanagawa, JP;
Norihiko Yamaguchi, Kanagawa, JP;
Yoshinori Yamauchi, Tokyo, JP;
Yuji Masui, Kanagawa, JP;
Osamu Maeda, Kanagawa, JP;
Masaki Shiozaki, Kanagawa, JP;
Norihiko Yamaguchi, Kanagawa, JP;
Yoshinori Yamauchi, Tokyo, JP;
Yuji Masui, Kanagawa, JP;
Sony Corporation, Tokyo, JP;
Abstract
In a VCSEL, a first multilayer film reflector, an active layer having a light emitting central region, a second multilayer film reflector, and a transverse mode adjustment layer are layered in this order. The first multilayer film reflector has a quadrangle current injection region with an intersection of diagonal lines corresponding to the light emitting central region. The second multilayer film reflector has a light emitting window provided in a region corresponding to one diagonal line of the current injection region and a pair of grooves provided with the light emitting window in between. The transverse mode adjustment layer is provided correspondingly to the light emitting window, and reflectance of a peripheral region thereof is lower than that of a central region thereof.