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:
Feb. 03, 2009
Filed:
Dec. 16, 2004
Hirofumi Kan, Hamamatsu, JP;
Hirofumi Miyajima, Hamamatsu, JP;
Nobuo Watanabe, Tokyo, JP;
Hamamatsu Photonics K.K., Hamamatsu-shi, Shizuoka, JP;
Abstract
A semiconductor laser devicecomprises: a heat sink, in turn comprising a main cooler unit, formed by joining metal members, a fluid channel, formed inside the main cooler unit, a cooling regionon an outer wall surface, and a resin layer, being continuously coated onto the outer wall surfaceand an inner wall surfacewith the exception of the cooling region; and a semiconductor laser element, positioned at the cooling regionwith thermal contact with the outer wall surfacebeing maintained. By continuously coating the outer wall surfaceand the inner wall surfacewith the resin layerwith the exception of the cooling region, prevention of corrosion near portions at which the outer wall surface and the inner wall surface contact each other is realized.