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. 06, 2001
Filed:
Jan. 21, 1998
Applicant:
Inventors:
Assignee:
Sony Corporation, Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 3/19 ;
U.S. Cl.
CPC ...
H01S 3/19 ;
Abstract
A semiconductor laser device with reduced threshold current and power consumption. Reflectivity Rr at a rear face of an optical cavity of the laser is set as large as possible. A monitor photodiode used for controlling an output form the laser is provided on a mount at a position to detect the main laser beam emitted from the front face of the optical cavity.