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:
Dec. 08, 2015
Filed:
Sep. 27, 2012
Panasonic Corporation, Osaka, JP;
Takashi Abe, Ehime, JP;
Abstract
A lens barrel includes a correction lens to move for zoom tracking, a zoom lens driver to mechanically move a zoom lens according to an amount of turn of a zoom ring, a storage unit to store relational information associating a zoom lens position with a focus position of the correction lens, and a controller to control the correction lens driver. The controller determines a focus position of the correction lens corresponding to a position distant by a predetermined amount from a detected zoom lens position, by referring to the relational information, and controls the correction lens driver to drive the correction lens to a target position set to the determined focus position. A formula varying with the change rate of the zoom lens position is used to calculate the predetermined amount, and is set according to positions of the zoom lens and the focus lens.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile