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:
Jul. 12, 2016
Filed:
Apr. 06, 2015
Hitachi Metals, Ltd., Minato-ku, Tokyo, JP;
Kenichi Tamura, Hitachi, JP;
Ryuta Takahashi, Hitachi, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
A multiplexing optical system in an optical transmitter module has first to third wavelength selective filters and a reflection mirror. The reflection mirror reflects a fourth optical signal to make it enter the first wavelength selective filter and reflects a third optical signal to make it enter the third wavelength selective filter. The third wavelength selective filter reflects a second optical signal to make it enter the second wavelength selective filter and transmits the third optical signal to make it enter the second wavelength selective filter. The first wavelength selective filter transmits a first optical signal to make it enter the second wavelength selective filter and reflects the fourth optical signal to make it enter the second wavelength selective filter. The second wavelength selective filter transmits the first and fourth optical signals and reflects the second and third optical signals to make them enter a lens.