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公开(公告)号：US09739973B2
公开(公告)日：2017-08-22
申请号：US14712708
申请日：2015-05-14
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.
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公开(公告)号：US11575836B2
公开(公告)日：2023-02-07
申请号：US16470493
申请日：2018-11-15
Inventor： Yasuhiro Shingu , Naotaka Kishida , Kyosuke Osuka , Takaaki Yamasaki
Abstract: The imaging device includes a camera body and an interchangeable lens unit detachably attached to the camera body, the imaging device including, an optical system including a focus lens, an infinite rotation type focus ring, a lens drive part moving the focus lens forward and backward in an optical axis direction of the optical system, a setting part allowing a user to set a rotation range of the focus ring, a storage part assigning and storing respective different rotation amounts of the focus ring to multiple positions within a movement stroke of the focus lens in accordance with a rotation range set in the setting part, and a control part driving the lens drive part to move the focus lens depending on a rotation amount of the focus ring to a position corresponding to the rotation amount stored in the storage part.
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公开(公告)号：US09838589B2
公开(公告)日：2017-12-05
申请号：US15299832
申请日：2016-10-21
Inventor： Naotaka Kishida , Yasuhiro Shingu
CPC classification number: H04N5/23209 , G02B7/102 , G02B7/14 , G03B13/36 , G03B2205/0046 , G05B11/42 , H04N5/2254 , H04N5/23212 , H04N5/23287 , H04N5/23296 , H04N5/3765 , H04N7/015
Abstract: An imaging apparatus including an exchangeable lens and a camera body. The camera body transmits a synchronizing signal having the same cycle as the cycle of the capturing operation in the imaging unit, to the interchangeable lens. The controller of the exchangeable lens performs a zoom tracking control by determining the focus position of the focus lens from the position of the zoom lens detected by the position detector by referring to the relation information, and controlling the focus lens driver to move the focus lens to the determined focus position, The controller performs the zoom tracking control in a cycle (for example, one-eighth) shorter than a cycle indicated by the synchronizing signal received from the camera body.
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公开(公告)号：US09645352B2
公开(公告)日：2017-05-09
申请号：US15082315
申请日：2016-03-28
Inventor： Naotaka Kishida , Kenji Kawazoe
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.
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