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:
Apr. 05, 2005
Filed:
Jul. 09, 2001
Kaoru Kagami, Akishima, JP;
Toshihisa Kurosawa, Akishima, JP;
Hidekuni Asai, Tokyo, JP;
Seiichi Yokoyama, Ome, JP;
Yoshiatsu Yokoo, Hidaka, JP;
Kaoru Kagami, Akishima, JP;
Toshihisa Kurosawa, Akishima, JP;
Hidekuni Asai, Tokyo, JP;
Seiichi Yokoyama, Ome, JP;
Yoshiatsu Yokoo, Hidaka, JP;
Hoya Corporation, Tokyo, JP;
Abstract
There are disclosed an optical filtering module and various optical devices using the filtering module. The optical filtering module has an optical filter for transmitting, attenuating or reflecting light having a certain wavelength range, a first optical system having an optical fiber for guiding light to be transferred to the optical filter, a second optical system having an optical fiber for guiding light transferred from the optical filter, the second optical system being opposingly arranged to the first optical system while interposing the optical filter therebetween and an outer cylindrically shaped glass holder for holding therein the optical filter, the first optical system and the second optical system secured thereto.