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:
Sep. 30, 2003
Filed:
Feb. 21, 2001
Tomoyuki Kitamura, Kanagawa, JP;
Yuichi Hamaguchi, Tokyo, JP;
Sony Corporation, Tokyo, JP;
Abstract
To stabilize the near field pattern (NFP) in a semiconductor laser emitting apparatus which emits a laser beam in a multi-lateral mode and extend the application fields of the apparatus. A semiconductor laser emitting apparatus, which emits a laser beam in a multi-lateral mode, and comprises a cladding layer in a stripe form formed on an active layer, wherein a current injection region of the semiconductor laser emitting apparatus has a difference in optical absorption loss between the inside and the outside of the current injection region, wherein the cladding layer disposed on the outside of the current injection region is formed so as to have a thickness of 0.7 &mgr;m or less.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile