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. 18, 2014
Filed:
Jan. 03, 2011
Naoto Jikutani, Miyagi, JP;
Kazuhiro Harasaka, Miyagi, JP;
Satoru Sugawara, Miyagi, JP;
Shunichi Sato, Miyagi, JP;
Naoto Jikutani, Miyagi, JP;
Kazuhiro Harasaka, Miyagi, JP;
Satoru Sugawara, Miyagi, JP;
Shunichi Sato, Miyagi, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A disclosed surface-emitting laser element includes an emission region configured to emit a laser beam and a high reflectance region including a first dielectric film having a first refractive index and a second dielectric film having a second refractive index differing from the first refractive index where the first dielectric film and the second dielectric film are stacked within the emission region to provide high reflectance. In the surface-emitting laser element, the high reflectance region is formed in a region including a central portion of the emission region and is configured to include shape anisotropy in two orthogonal directions in a plane in parallel with the emission region.