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:
Sep. 22, 2015
Filed:
Aug. 04, 2014
Hitachi Metals, Ltd., Minato-ku, Tokyo, JP;
Ryuta Takahashi, Hitachi, JP;
Hiroshi Ikuno, Hitachi, JP;
Hitachi Metals, Ltd., Tokyo, JP;
Abstract
An optical transceiver includes: a first WDM filter which reflects a first optical signal from a first light source and passes a second optical signal from a second light source; a first total reflection mirror which reflects the first optical signal to make it enter the first WDM filter; a second total reflection mirror which reflects the second optical signal; and a second WDM filter which reflects the second optical signal reflected by the second total reflection mirror to make it enter the first WDM filter. The first and second WDM filters are disposed on a light path, the first and second light sources are disposed back and forth along the light path on both sides thereof, the first and second total reflection mirrors are disposed outside the light path, and an incident angle of the first optical signal to the first WDM filter is smaller than 45 degrees.