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:
Dec. 21, 2004
Filed:
Mar. 12, 2002
Applicant:
Inventor:
Tooru Sugiyama, Kanagawa-ken, JP;
Assignee:
Kabushiki Kaisha Toshiba, Minato-Ku, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 3/08 ;
U.S. Cl.
CPC ...
H01S 3/08 ;
Abstract
A spot size converter comprising an incident area of a first size, an exit area of a second size different from the first size, and side walls defining a light guide, wherein at least a part of side wall inclines from the width direction axis and the thickness direction axis of the incident area is provided. Thereby, it is able to regulate the divergence of the outgoing light, and to optically couple optical elements of different spot size with each other at a high-efficiency. Moreover, the semiconductor laser module and optical fiber laser device using such a spot size converter are provided.