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:
Oct. 13, 2015
Filed:
Nov. 25, 2014
Canon Kabushiki Kaisha, Tokyo, JP;
Katsuyuki Hoshino, Kawasaki, JP;
Takeshi Uchida, Hiratsuka, JP;
CANON KABUSHIKI KAISHA, Tokyo, JP;
Abstract
A light-emitting element array includes light-emitting elements that emit light in a direction perpendicular to a substrate. Each light-emitting element includes the substrate, a first nitride semiconductor layer on the substrate and having a mesa portion, an active layer made of a nitride semiconductor disposed on the surface of the mesa portion of the first semiconductor layer opposite the substrate, a second nitride semiconductor layer on the active layer, and a heat radiation layer disposed so that the surface formed by projecting the heat radiation layer on a plane perpendicular to the optical axis of the light-emitting element does not overlap with the surface formed by projecting the mesa portion on the same plane when viewed in the optical axis direction. When the light-emitting element is projected on a plane perpendicular to the optical axis, the surface has an area in a specific range.