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. 10, 2009
Filed:
May. 14, 2008
Yasunobu Matsuoka, Hachioji, JP;
Makoto Takahashi, Kokubunji, JP;
Kazuhiko Hosomi, Tachikawa, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An optical module includes an optical element mount substrate having a laser diode and a photo detector mounted thereon on a straight line in a horizontal direction of the surface of the substrate, a first optical function integrate substrates, provided in its one surface with surfaces tilted at an angle to the parallel surface of the substrate for refracting light propagated in a substrate thickness direction, the two tilted surfaces being arranged to face each other. The photo detector and the first and second optical function integrate substrates are laminated in the substrate thickness direction, a first optical wavelength filter and a reflecting film having different wavelength transmissivities to the propagation light are provided in an optical path between the first and second tilted surfaces.