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公开(公告)号:US20230024495A1
公开(公告)日:2023-01-26
申请号:US17783672
申请日:2020-11-10
摘要: A driving-unit operation method includes: generating pulse blocks on the basis of driving pulses; and modifying a driving signal in accordance with a position error signal. In the modifying the driving signal, when the position error signal is in a first range, the shape of the driving pulses is modified so as to form a first driving-pulse shape, and the pulse-block duty cycle is set to a first pulse-block duty cycle value, whereas when the position error signal is in a second range, the shape of the driving pulses is modified so as to form a second driving-pulse shape, and the pulse-block duty cycle is set to a second pulse-block duty cycle value.
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公开(公告)号:US20220236516A1
公开(公告)日:2022-07-28
申请号:US17609430
申请日:2020-05-07
申请人: Shun SUZUKI , Yoichi ITAGAKI , Tomohiko OSAKA , Masahiro ISHIKAWA , Daisuke YAMAGUCHI , Miniswys S.A.
发明人: Shun SUZUKI , Yoichi ITAGAKI , Tomohiko OSAKA , Masahiro ISHIKAWA , Daisuke YAMAGUCHI , Raphael HOESLI , Maxime ROTEN , Michael BRUMANN , Loann BAUME
摘要: A lens driving device includes: a movable part for accommodating a lens; and an ultrasonic motor having a resonance part configured to move the movable part by motion of the resonance part of the ultrasonic motor. The resonance part has a pair of arms, and is disposed such that only one of the arms is in contact with the movable part.
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公开(公告)号:US20220308303A1
公开(公告)日:2022-09-29
申请号:US17616710
申请日:2020-06-02
申请人: Shun SUZUKI , Yoichi ITAGAKI , Miniswys S.A.
发明人: Shun SUZUKI , Yoichi ITAGAKI , Raphael HOESLI , Maxime ROTEN , Michael BRUMANN , Loann BAUME
摘要: A lens drive device is provided with a first fixed part, a first movable part, a first supporting part, and a Z-direction drive unit which moves the first movable section in an optical axis direction (the Z-direction) relative to the first fixed part and is constituted by an ultrasonic motor that converts vibration motion into rotational motion. The lens drive device further has a rotating body which rotates around the optical axis in response to rotational motion of the Z-direction drive unit, and a mechanical element which converts the rotational motion of the rotating body into linear motion in the optical axis direction, the first movable part being moved in the optical axis direction by rotation of the rotating body.
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