公开(公告)号：US09739973B2

公开(公告)日：2017-08-22

申请号：US14712708

申请日：2015-05-14

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Naotaka Kishida ,  Kenji Kawazoe

IPC: G02B9/04 ,  G02B7/09 ,  G02B7/08 ,  G02B7/10 ,  G03B13/36 ,  H04N5/225 ,  H04N5/232 ,  G02B7/14 ,  G02B7/28 ,  G02B13/00

CPC classification number: G02B7/09 ,  G02B7/08 ,  G02B7/102 ,  G02B7/14 ,  G02B7/28 ,  G02B13/001 ,  G03B13/36 ,  H04N5/2254 ,  H04N5/23209 ,  H04N5/23212

Abstract: A focusing system includes a first drive unit for driving a first focus lens along the optical axis, a second drive unit for driving a second focus lens along the optical axis, a determining unit for periodically detecting a focus state of a subject image formed via the optical system and determining a focus position of the optical system based on the detected result, and a control unit for controlling the first and second drive units according to a result of determining the focus position of the optical system by the determining unit. The control unit controls the second drive unit to drive the second focus lens independently of the first focus lens, in the focus operation.

公开(公告)号：US09645352B2

公开(公告)日：2017-05-09

申请号：US15082315

申请日：2016-03-28

Applicant: Panasonic Intellectual Property Management Co., Ltd.

Inventor： Naotaka Kishida ,  Kenji Kawazoe

IPC: G03B3/10 ,  G03B13/34 ,  G02B7/105 ,  G02B27/64

CPC classification number: G02B7/105 ,  G02B27/646 ,  G03B3/10 ,  G03B13/34

Abstract: The image pickup apparatus has a focus lens that adjusts focus on a subject, an operating section (an MF operation ring) that accepts user's operation, and a focus-lens driver that drives the focus lens in response to the user's operation. The focus-lens driver drives the focus lens so that a rotation amount at the operating section, which is required for moving a focus position by unit distance, is maintained at a constant level with no regard to a subject distance.