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. 27, 2006
Filed:
Jul. 10, 2003
Yoji Okazaki, Kaisei-machi, JP;
Kazuhiko Nagano, Kaisei-machi, JP;
Teruhiko Kuramachi, Kaisei-machi, JP;
Yoji Okazaki, Kaisei-machi, JP;
Kazuhiko Nagano, Kaisei-machi, JP;
Teruhiko Kuramachi, Kaisei-machi, JP;
Fuji Photo Film Co., Ltd., Kanagawa-ken, JP;
Abstract
In a laser-light source: submounts each being made of a material having a thermal expansion coefficient of 3.5 to 6.0×10/° C. and having a thickness of 200 to 400 micrometers are separately formed on a heat-dissipation block made of copper or copper alloy; a single-cavity nitride-based semiconductor laser chips are respectively mounted junction-side-down on the corresponding submounts; an optical condenser system collects laser beams emitted from the semiconductor laser chips, and couples the collected laser beams to a multimode optical fiber. A bonding surface of each semiconductor laser chip is bonded to a bonding surface of a corresponding submount through a metalization layer and an Au—Sn eutectic solder layer each of which is divided into areas.