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:
Nov. 28, 1989
Filed:
Apr. 22, 1988
Applicant:
Inventor:
Yuichi Odagiri, Tokyo, JP;
Assignee:
NEC Corporation, , JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01S / ;
U.S. Cl.
CPC ...
372 29 ; 372 38 ; 372 34 ;
Abstract
An optical transmission apparatus is operable without being effected by ambient temperature by combining the control over output light of a semiconductor light emitting element, which constitutes a semiconductor laser unit, and the control over the temperature of the light emitting element. The apparatus is usable in an extended range of ambient temperatures.