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:
Jul. 11, 2000
Filed:
Apr. 16, 1999
Kiyohiko Miyahara, Kanagawa, JP;
Hidehiro Kawaguchi, Kanagawa, JP;
Toshihisa Iriyama, Kanagawa, JP;
Kazuhiko Otsuka, Chiba, JP;
Sony Corporation, Tokyo, JP;
Abstract
Disclosed is an optical axis correcting device which allows high accuracy optical axis adjustment and which has an excellent responsiveness. An optical communication device suited for long distance optical communication using this optical axis correcting device is provided. A two-axis spring for setting a mirror includes a first annular section, a second annular section on the outer side of the first annular section and concentric thereto, and a third annular section on the outer side of the second annular section and concentric thereto, wherein the first annular section and the second annular section are connected together by a pair of X-axis bridges which allow torsional rotation and which are opposed to each other with the center of the concentric circle therebetween, wherein the second annular section and the third annular section are connected together by similar Y-axis bridges. The X-axis bridges and the Y-axis bridges are arranged at a predetermined angle by using the center of the concentric circles as a reference, and are arranged so as to exhibit the same angle with respect to the rolling direction of the rolled members forming the two-axis spring using the center of the concentric circles as a reference.