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:
Jun. 03, 1997
Filed:
Sep. 07, 1995
Yasunori Miyazaki, Itami, JP;
Mitsubishi Denki Kabushiki Kaisha, Tokyo, JP;
Abstract
A semiconductor laser device includes unit semiconductor lasers having facets and having side surfaces, active layers disposed in the respective unit semiconductor lasers so that the ends of the active layers are exposed to the facets of the respective unit semiconductor lasers and having centers at the facets. Two adjacent columns respectively include unit semiconductor lasers in the same number which are laminated so that light is emitted from each of the unit semiconductor lasers in the same direction. The active layer in the facet of each unit semiconductor laser is located at a position closer to the adjacent column than the center of the facet of the unit semiconductor laser. Therefore, as compared with the prior art array type semiconductor laser device in which the central point of the active layer is located at the center of the facet, i.e., at the center between the side surfaces of the unit semiconductor laser, a region where the active layers are distributed, i.e., a light emitting region, is narrowed, whereby the collection of the emitted light using a lens is facilitated.