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:
Jun. 14, 2005
Filed:
Jul. 31, 2002
Kenjiro Hamanaka, Osaka, JP;
Kenjiro Hamanaka, Osaka, JP;
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Abstract
An optical moduleis provided in which a wavelength division elementsuch as an optical multi-layer film or diffraction grating is united between the sides of lens blocksof optical module unitsandopposed to optical fiber blocks. Only light with a wavelength λi among light (wavelength components: λ. . . λn) from an optical fiberis transmitted through the wavelength division elementand enters an optical fiberof the optical module unit. On the other hand, the light (wavelength components: λ. . . λn−λi) reflected at the wavelength division elementis taken out of an optical fiberof the optical module unit