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:
Feb. 13, 2001
Filed:
Sep. 10, 1999
Applicant:
Inventor:
Hiroji Katsuragi, Izumi, JP;
Assignee:
Minolta Co., Ltd., Osaka, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G02B 7/02 ;
U.S. Cl.
CPC ...
G02B 7/02 ;
Abstract
A lens driving actuator comprises a lens barrel formed of piezoelectric material, an electrode pair comprising a pair of venetian blind-like electrodes opposed to the interior surface of the lens barrel in the axial direction, and a high frequency wave power source for exciting the electrodes of the electrode pair which are arranged so as to form a waveguide between the electrode pair on the interior surface of the lens barrel such that elastic surface waves travel this waveguide in the axial direction via the excitation of the electrodes of the electrode pair and a lens pressing against the waveguide.