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. 26, 2011
Filed:
Mar. 17, 2006
Akira Yasuda, Chiba, JP;
Takeshi Kinoshita, Chiba, JP;
Toshihiro Hirai, Chiba, JP;
Seiko Precision Inc., Chiba, JP;
Abstract
A focusing device of simple construction that is miniaturizable, and an imaging device utilizing the same, are provided. A focusing device () comprises an actuator (), a lens holder () that holds lenses () and (), and a holder support base () upon which the lens holder () is installed. The actuator () comprises a polymer layer (), a positive electrode () that is formed upon the holder support base (), and a negative electrode () that is formed upon the lens holder (). When the applied voltage between the positive electrode () and the negative electrode () rises, the polymer layer () deforms radially outward along the positive electrode (). Along with this deformation of the polymer layer (), the actuator () moves the lens holder () along the optical axis.