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. 05, 2002
Filed:
Feb. 11, 2000
Applicant:
Inventors:
Manabu Komiyama, Kawasaki, JP;
Tatsuro Kunikane, Kawasaki, JP;
Yoshimitsu Sakai, Sapporo, JP;
Masaki Kuribayashi, Sapporo, JP;
Assignee:
Fujitsu Limited, Kawsaki, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H01S 3/13 ; H01S 3/04 ; H01S 3/00 ;
U.S. Cl.
CPC ...
H01S 3/13 ; H01S 3/04 ; H01S 3/00 ;
Abstract
An optical module includes a first level detecting part having a semi-transparent structure and receiving a light signal emitted from a light-emitting element, a second level detecting part receiving the light signal which penetrates through the first level detecting part and passes through an optical filter, and a control part controlling an operation temperature of the light-emitting element on the basis of electric signals output from the first and second level detecting parts.