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. 13, 2013
Filed:
Nov. 28, 2011
Shunichi Sato, Miyagi, JP;
Akihiro Itoh, Miyagi, JP;
Hiroyoshi Shouji, Miyagi, JP;
Yoshinori Hayashi, Kanagawa, JP;
Daisuke Ichii, Kanagawa, JP;
Kei Hara, Miyagi, JP;
Mitsumi Fujii, Iwate, JP;
Shunichi Sato, Miyagi, JP;
Akihiro Itoh, Miyagi, JP;
Hiroyoshi Shouji, Miyagi, JP;
Yoshinori Hayashi, Kanagawa, JP;
Daisuke Ichii, Kanagawa, JP;
Kei Hara, Miyagi, JP;
Mitsumi Fujii, Iwate, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
A surface-emission laser array comprises a plurality of surface-emission laser diode elements arranged in the form of a two-dimensional array including a plurality of columns of the surface-emission laser diode elements, each column including therein at least two surface-emission laser diode elements in a first direction. The surface-emission laser diode elements in a column are disposed with an equal interval in the first direction. The plural columns arc disposed in a second direction which is perpendicular to the first direction. An interval between two adjacent columns is larger in a central part than in a peripheral part of the two-dimensional array of the surface-emission laser diode elements in the second direction.