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:
May. 14, 1991
Filed:
Apr. 03, 1990
Applicant:
Inventor:
Masayuki Kubota, Itami, JP;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 50 ; 372 43 ; 357 19 ;
Abstract
A semiconductor laser device includes at least two semiconductor laser elements emitting a plurality of laser beams from the front and rear facets, a light guide layer which guides the respective laser beams emitted from the rear facets and converts the wave fronts of the beams while guiding them to form separated beams, and a plurality of photodetectors which detect the converted wave fronts converted to monitor the intensities of laser beams emitted from the front facets.