Title:
レンズ鏡筒及び撮像装置
Document Type and Number:
Japanese Patent JP5821001
Kind Code:
B2
Abstract:
A lens barrel includes a correction lens to move along an optical axis to perform zoom tracking, a correction lens driver to drive the correction lens, a zoom lens, a zoom ring to be turned by a user, a zoom lens driver to mechanically move the zoom lens according to an amount of turn of the zoom ring, a position detector to detect a position of the zoom lens, a rate detector to detect a change rate of the position of the zoom lens, a storage unit to store relational information which associates the position of the zoom lens 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 more distant by a predetermined amount from the position of the zoom lens detected by the position detector, by referring to the relational information, and controls the correction lens driver to drive the correction lens with a target position set to the determined focus position. The predetermined amount is changed according to the change rate of the position of the zoom lens detected by the rate detector.
Inventors:
Takashi Abe
Application Number:
JP2009208388A
Publication Date:
November 24, 2015
Filing Date:
September 09, 2009
Export Citation:
Assignee:
Panasonic IP Management Co., Ltd.
International Classes:
G02B7/08; G02B7/10; G03B17/14; H04N5/225
Domestic Patent References:
| JP6153049A | ||||
| JP2005326771A | ||||
| JP2003262775A | ||||
| JP6333720A |
Attorney, Agent or Firm:
Mitsuo Tanaka
Samejima Mutsumi
Kawabata Junichi
Samejima Mutsumi
Kawabata Junichi