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:
Jul. 23, 1985
Filed:
Apr. 12, 1984
Applicant:
Inventor:
Takashi Kitamura, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 50 ; 357 17 ; 372 38 ; 372 46 ;
Abstract
A semiconductor laser device has a high switching speed and low cost, and comprises a common electrode, on the surface of a P-type semiconductor wafer forming plural light sources. The semiconductor laser device is further featured by having grooves provided on said semiconductor wafer to allow independent drive of said light sources and to reduce the distance between the light-emitting points of the light sources.