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:
Jun. 08, 1993
Filed:
Mar. 22, 1991
Applicant:
Inventors:
Haruo Tanaka, Kyoto, JP;
Naofumi Aoki, Kyoto, JP;
Assignee:
Rohm Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 36 ; 372108 ;
Abstract
A laser diode which includes a substrate, a laser diode chip bonded on the substrate through a sub-mount, and a monitor element formed on the substrate or the sub-mount so as to monitor laser light emitted from a rear cleavage face of the laser diode chip. The rear cleavage face and the surface of the monitor element are connected, through a space between them, by a solid state waveguide device of a light-transmitting or semi-light transmitting nature.