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:
May. 15, 2001
Filed:
Jun. 16, 1999
Kenji Mizumoto, Osaka, JP;
Minolta Co., Ltd., Osaka, JP;
Abstract
An apparatus comprises first and second piezoelectric elements,each extending and contracting in a driving direction, a fixed member,secured to one end of each of the first and second piezoelectric elements,first and second guide shafts,secured to the other ends of the respective first and second piezoelectric elements,to reciprocate with the extension and contraction of the aforesaid piezoelectric elements, first and second lens frames,held frictionally by the first and second guide shafts,and a drive pulse generator for causing the slow and rapid displacements of each of the first and second piezoelectric elements,and outputting drive pulses such that a period during which the first piezoelectric element,undergoes rapid displacement does not coincide with a period during which the second piezoelectric element,undergoes rapid displacement.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile