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:
Nov. 29, 2011
Filed:
Mar. 16, 2007
Shuichi Horiguchi, Kanagawa, JP;
Gentarou Irisawa, Kanagawa, JP;
Yuichiro Mori, Kanagawa, JP;
Masafumi Mizuno, Kanagawa, JP;
Yasuji Nakamura, Kanagawa, JP;
Shuichi Horiguchi, Kanagawa, JP;
Gentarou Irisawa, Kanagawa, JP;
Yuichiro Mori, Kanagawa, JP;
Masafumi Mizuno, Kanagawa, JP;
Yasuji Nakamura, Kanagawa, JP;
Panasonic Corporation, Osaka, JP;
Abstract
A variable focal lens which does not require a reduction of a zoom factor and eliminates an origin sensor is provided. A microcomputerfunctions as a focus adjustment section which controls a stepper motorto move a focusing ringfor a focus adjustment. The microcomputercauses the focusing ringto move by a first moving distance in a first moving direction toward one of a FAR side and a NEAR side, and then to move the focusing ringby a second moving distance in a second moving direction opposite to the first moving direction, and set the point where the focusing ring reaches after the movement in the second moving direction as a reference point for adjustment, and the microcomputercauses the focusing ringto move from the reference point for adjustment in the first moving direction within a range equal to or less than the second moving distance to carry out the focus adjustment. This configuration eliminates margins provided by software at ends of the movement range of the focusing ring