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:
Dec. 01, 2009
Filed:
Dec. 20, 2007
Hisashi Takamatsu, Yokohama, JP;
Takeshi Yamashita, Ninomiya, JP;
Hideyuki Kuwano, Fujisawa, JP;
Osamu Kagaya, Tokyo, JP;
Hiroyuki Arima, Yokohama, JP;
Hisashi Takamatsu, Yokohama, JP;
Takeshi Yamashita, Ninomiya, JP;
Hideyuki Kuwano, Fujisawa, JP;
Osamu Kagaya, Tokyo, JP;
Hiroyuki Arima, Yokohama, JP;
Opnext Japan, Inc., Kanagawa, JP;
Abstract
An optical transmitter module is described. The optical transmitter module includes a lead pin for electrically connecting the inside and outside of a housing, and a flexible printed circuit board connected to the lead pin. The flexible printed circuit board has a signal pattern and two ground conductor patterns to be connected to an optical modulation element, a laser terminal pattern to be connected to a semiconductor laser, a Peltier terminal pattern to be connected to a Peltier element, and two covering conductive layers in addition to a layer on which such patterns are formed. The covering conductive layers cover all the patterns except for the signal pattern.