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:
Dec. 13, 2005
Filed:
Mar. 08, 2002
Kenichi Nakama, Osaka, JP;
Tsuyoshi Yamane, Osaka, JP;
Shigeki Nagasaka, Osaka, JP;
Nippon Sheet Glass Co., Ltd., Osaka, JP;
Abstract
In a small-sized optical module, opposite side surfaces of a collimator lens () and opposite side surfaces of a polarization compensating filter () are fixed to opposite side surfaces of a rectangular frame (). Two open surfaces are provided in the rectangular frame (), so that optical components can be finely adjusted easily, and a large number of small-sized optical components can be aligned and assembled accurately. Reinforcing members () are provided in the open surfaces of the rectangular frame () so that the shape of the rectangular frame () can be retained against external force. After a diffraction grating () is fixed to the reinforcing members (), the reinforcing members () with the diffraction grating () are adjusted, aligned and fixed to the rectangular frame ().