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. 26, 2011
Filed:
May. 08, 2009
Kaoru Matsuki, Kawasaki, JP;
Kaoru Matsuki, Kawasaki, JP;
Olympus Corporation, Tokyo, JP;
Abstract
An inertial drive actuator includes a fixed member, a displacement generating mechanism which is connected to the fixed member, and which generates a minute displacement in a first direction and a second direction, a vibration substrate which reciprocates by the minute displacement generated by the displacement generating mechanism, a mobile object which is disposed on the vibration substrate, and which is movable by inertia, a driving mechanism which is connected to the mobile object, and which controls a frictional force between the mobile object and the vibration substrate by making an electromagnetic force to act in the mobile object by applying a current, a detecting electrode having a position detection function, which is disposed on a flat surface of the vibration substrate, to be facing the mobile object via an insulating body layer, and which is formed such that, an area face-to-face thereof with the mobile object either increases continuously or decreases continuously with the movement of the mobile object, and a position detecting mechanism which detects a position of the mobile object by detecting an electrostatic capacitance generated between the mobile object and the detecting electrode.