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. 19, 2002
Filed:
May. 29, 1998
Applicant:
Inventors:
Hisaya Kato, Takahama, JP;
Yoshitaka Gotoh, Toyoake, JP;
Katsunori Abe, Chita-gun, JP;
Kinya Atsumi, Okazaki, JP;
Takekazu Terui, Tokai, JP;
Noriyuki Matsushita, Nagoya, JP;
Assignee:
Denso Corporation, Kariya, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S 3/04 ; H01S 5/00 ;
U.S. Cl.
CPC ...
H01S 3/04 ; H01S 5/00 ;
Abstract
A high power stripe-geometry heterojunction laser diode device is provided which may be employed in a radar system designed to measure the distance to a target. The laser diode device has an electric circuit path extending from a first electrode connected to a voltage source to a second electrode connected to ground and features addition of a resistance of 1 m&OHgr; or more to the electric circuit path to provide uniform current distribution in an active layer for emitting a high density laser beam.