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. 24, 2002
Filed:
Mar. 14, 2000
Takehiro Shiomoto, Kashihara, JP;
Ikuo Kohashi, Gojo, JP;
Sharp Kabushiki Kaishiki, Osaka, JP;
Abstract
A semiconductor laser device ( ) comprises a first semiconductor laser element ( ) and a second semiconductor laser element ( ) of different wavelengths, which are mounted on a heat sink block ( ) directly or through a sub-mount provided on the heat sink block. The optical axes (A, B) of the semiconductor laser elements are substantially parallel to each other. The first and second semiconductor laser elements ( ) are mounted on the heat sink block ( ) in such a manner that a relationship of 0≦L≦d +d ≦160 &mgr;m is satisfied, where d is a distance between the optical axis (A) of the first semiconductor laser element ( ) and the center axis (O) of a condenser lens ( ) arranged in front of the semiconductor laser device (i.e., faced to the emission surfaces of the semiconductor laser elements), d is a distance between the optical axis (B) of the second semiconductor laser element ( ) and the center axis of the condenser lens, and L is a distance between the optical axes of the first and second semiconductor laser elements.