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公开(公告)号：US09140875B2
公开(公告)日：2015-09-22
申请号：US14043311
申请日：2013-10-01
Applicant: TDK CORPORATION
Inventor： Masaru Uno , Kazutomo Imi
Abstract: A lens drive device comprises a base, a lens holder, a piezoelectric actuator having a pair of frictional parts, and a pressing piece. The lens holder has a barrel, a projection projecting from the barrel, a support separated from the barrel, and a joint joining the projection and the support to each other. The pressing piece presses the piezoelectric actuator against the barrel so as to keep such a state that at least one of the pair of frictional parts is in contact with the barrel.
Abstract translation: 透镜驱动装置包括基座，透镜支架，具有一对摩擦部分的压电致动器和按压片。 透镜架具有筒体，从筒体突出的突起，与筒体分离的支撑体以及将突起和支撑件彼此接合的接头。 按压部件将压电致动器压靠在筒体上，以保持这一对摩擦部件中的至少一个与筒体接触的状态。
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公开(公告)号：US10511237B2
公开(公告)日：2019-12-17
申请号：US15435040
申请日：2017-02-16
Applicant: TDK Corporation
Inventor： Akira Suzuki , Masaru Uno , Kazutomo Imi , Yoshiaki Haga
Abstract: The present invention provides a driving apparatus capable of suppressing the operation noise. A driving apparatus comprises a piezoelectric element expanding and contracting in accordance with a driving signal; a supporting shaft connected to said piezoelectric element; a movable body frictionally engaged with said supporting shaft and capable of moving along said supporting shaft; and a driving portion applying said driving signal including a first driving signal which moves said movable body towards a first direction to said piezoelectric element, wherein said driving portion can repeatedly apply said first driving signal against said piezoelectric element by taking a first time in between, and said first driving signal comprises a main driving waveform group which moves said movable body to said first direction, and a sub driving waveform group which is placed after said main driving waveform group by having a second rest time shorter than said first time in between.
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公开(公告)号：US20170163177A1
公开(公告)日：2017-06-08
申请号：US15435040
申请日：2017-02-16
Applicant: TDK Corporation
Inventor： Akira SUZUKI , Masaru Uno , Kazutomo Imi , Yoshiaki Haga
CPC classification number: H02N2/06 , B06B1/0644 , H02N2/025 , H02N2/062
Abstract: The present invention provides a driving apparatus capable of suppressing the operation noise. A driving apparatus comprises a piezoelectric element expanding and contracting in accordance with a driving signal; a supporting shaft connected to said piezoelectric element; a movable body frictionally engaged with said supporting shaft and capable of moving along said supporting shaft; and a driving portion applying said driving signal including a first driving signal which moves said movable body towards a first direction to said piezoelectric element, wherein said driving portion can repeatedly apply said first driving signal against said piezoelectric element by taking a first time in between, and said first driving signal comprises a main driving waveform group which moves said movable body to said first direction, and a sub driving waveform group which is placed after said main driving waveform group by having a second rest time shorter than said first time in between.
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Patent Agency Ranking
公开(公告)号：US08964315B2
公开(公告)日：2015-02-24
申请号：US13739544
申请日：2013-01-11
Applicant: TDK Corporation
Inventor： Akira Suzuki , Kazutomo Imi , Masaru Uno
CPC classification number: G02B7/04 , G02B7/08 , H02N2/004 , H02N2/0055 , H02N2/006 , H02N2/0065 , H02N2/026
Abstract: A lens drive device comprises a lens holder, a piezoelectric actuator, a ball member held rotatably, and an biasing member configured to apply an biasing force to the lens holder toward the piezoelectric actuator through the ball member. The lens holder has a projection projecting outward from an outer peripheral surface and extending in a direction intersecting the projecting direction and optical axis. A side wall face of the projection is formed with a groove extending along the optical axis and engaging the ball member. A position receiving the biasing force from the biasing member and a position receiving the drive force from the actuator in the lens holder oppose each other through the projection interposed therebetween.
Abstract translation: 透镜驱动装置包括透镜保持器，压电致动器，可旋转地保持的球形构件以及被构造成通过球构件向透镜保持器施加偏压力朝向压电致动器的偏置构件。 透镜架具有从外周面向外突出并且沿与突出方向和光轴相交的方向延伸的突起。 突起的侧壁面形成有沿着光轴延伸并与球部件接合的凹槽。 接收来自偏置构件的偏置力的位置和从透镜架中的致动器接收驱动力的位置通过插入其间的突起彼此相对。
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公开(公告)号：US20140307341A1
公开(公告)日：2014-10-16
申请号：US14251307
申请日：2014-04-11
Applicant: TDK CORPORATION
Inventor： Masaru Uno , Kazutomo Imi , Noriyuki Kawano , Kazuhiko Inoue , Masashi Gotoh , Osamu Ohhata , Shintarou Koike , Yasuhide Yamashita
IPC: G02B7/10
CPC classification number: G02B7/08 , G02B13/001
Abstract: A lens holding device includes a movable part having a coil attached to a lens holder holding a lens and includes a magnet part arranged around an outer peripheral side of the movable part so as to face the coil. The lens holding device includes a support part which supports the movable part so as to move relatively and a spring which connects the movable part and the support part resiliently. The magnet part includes a resin and has an alignment part which positions the spring.
Abstract translation: 透镜保持装置包括具有附接到保持透镜的透镜保持器的线圈的可动部分，并且包括围绕可动部分的外周侧布置以面对线圈的磁体部分。 透镜保持装置包括支撑可移动部分以相对移动的支撑部分和弹性地弹性地连接可动部分和支撑部分。 磁体部分包括树脂，并具有定位弹簧的定位部分。
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公开(公告)号：US20140084751A1
公开(公告)日：2014-03-27
申请号：US14032061
申请日：2013-09-19
Applicant: TDK Corporation
Inventor： Akira Suzuki , Masaru Uno , Kazutomo Imi , Yoshiaki Haga
IPC: H02N2/06
CPC classification number: H02N2/06 , B06B1/0644 , H02N2/025 , H02N2/062
Abstract: A driving apparatus capable of suppressing operation noise, the apparatus comprising a piezoelectric element expanding and contracting in accordance with a driving signal; a supporting shaft connected to said piezoelectric element; a movable body frictionally engaged with said supporting shaft and capable of moving along said supporting shaft; and a driving portion applying said driving signal including a first driving signal which moves said movable body towards a first direction to said piezoelectric element, wherein said driving portion can repeatedly apply said first driving signal against said piezoelectric element by taking a first time in between, and said first driving signal comprises a main driving waveform group which moves said movable body to said first direction, and a sub driving waveform group which is placed after said main driving waveform group by having the a second rest time shorter than said first time in between.
Abstract translation: 一种能够抑制操作噪声的驱动装置，该装置包括根据驱动信号而伸缩的压电元件; 连接到所述压电元件的支撑轴; 与所述支撑轴摩擦接合并能够沿着所述支撑轴移动的可动体; 以及驱动部分，其将包括使所述可移动体朝着第一方向移动到所述压电元件的第一驱动信号施加所述驱动信号，其中所述驱动部分可以通过第一次在所述压电元件之间重复地将所述第一驱动信号施加到所述压电元件上， 并且所述第一驱动信号包括使所述可移动体移动到所述第一方向的主驱动波形组，以及通过在所述主驱动波形组之后的第二休息时间比所述第一时间短的次驱动波形组 。
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公开(公告)号：US09465230B2
公开(公告)日：2016-10-11
申请号：US14251378
申请日：2014-04-11
Applicant: TDK Corporation
Inventor： Masaru Uno , Kazutomo Imi , Noriyuki Kawano , Kazuhiko Inoue , Masashi Gotoh , Osamu Ohhata , Shintarou Koike , Yasuhide Yamashita
CPC classification number: G02B27/646 , G02B7/08 , G03B3/10 , G03B2205/0069 , H04N5/2328
Abstract: A lens holding unit is held so that it can relatively move with respect to a base part to a direction vertical to an optical axis direction. The lens holding unit has a lens holder, a magnet part, and a spring. The lens holder has a first coil. The magnet part has a first magnet part which includes a first face facing to the first coil and a second magnet part which includes a second face vertical to the first face and constitutes a magnetic domain different from that of the first magnet part. These first magnet part and second magnet part are integrated.
Abstract translation: 保持透镜保持单元，使得其能够相对于基部相对于与光轴方向垂直的方向相对移动。 透镜保持单元具有透镜架，磁体部和弹簧。 透镜架具有第一线圈。 磁体部分具有第一磁体部分，其包括面向第一线圈的第一面和第二磁体部分，其包括垂直于第一面的第二面，并且构成与第一磁体部不同的磁畴。 这些第一磁体部分和第二磁体部分被集成。
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公开(公告)号：US09395510B2
公开(公告)日：2016-07-19
申请号：US14251307
申请日：2014-04-11
Applicant: TDK CORPORATION
Inventor： Masaru Uno , Kazutomo Imi , Noriyuki Kawano , Kazuhiko Inoue , Masashi Gotoh , Osamu Ohhata , Shintarou Koike , Yasuhide Yamashita
CPC classification number: G02B7/08 , G02B13/001
Abstract: A lens holding device includes a movable part having a coil attached to a lens holder holding a lens and includes a magnet part arranged around an outer peripheral side of the movable part so as to face the coil. The lens holding device includes a support part which supports the movable part so as to move relatively and a spring which connects the movable part and the support part resiliently. The magnet part includes a resin and has an alignment part which positions the spring.
Abstract translation: 透镜保持装置包括具有附接到保持透镜的透镜保持器的线圈的可动部分，并且包括围绕可动部分的外周侧布置以面对线圈的磁体部分。 透镜保持装置包括支撑可移动部分以相对移动的支撑部分和弹性地弹性地连接可动部分和支撑部分。 磁体部分包括树脂，并具有定位弹簧的定位部分。
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