公开(公告)号：US11237351B2

公开(公告)日：2022-02-01

申请号：US16508604

申请日：2019-07-11

Applicant: TDK CORPORATION

Inventor： Akira Suzuki

IPC: G02B7/02 ,  G02B7/09 ,  G02B7/08 ,  H04N5/232 ,  H04N5/225 ,  G03B3/02 ,  G03B5/02

Abstract: A lens drive device includes a movable unit, a fixed unit, and a support portion. The movable unit includes a magnet and a lens holder for holding a lens. The fixed unit includes a coil board and a base board. The coil board includes a coil facing the magnet. The base board is disposed on the other side of the magnet across the coil board and includes an opening through which the optical axis of the lens passes. The support portion relatively movably connects the movable unit to the fixed unit and supports the movable unit to the fixed unit. In the fixed unit, a metal-particle-containing resin portion containing metal particles unevenly distributed in a resin covers at least one of a first conductive portion and a second conductive portion.

公开(公告)号：US11243376B2

公开(公告)日：2022-02-08

申请号：US16508382

申请日：2019-07-11

Applicant: TDK CORPORATION

Inventor： Akira Suzuki ,  Shusuke Ichihashi

IPC: G02B7/09 ,  H04N5/232 ,  H04N5/225 ,  G03B5/02

Abstract: A lens drive device includes a movable unit, a fixed unit, and a support portion. The movable unit includes a magnet and a lens holder for holding a lens. The fixed unit includes a coil board and a base board. The coil board includes a coil facing the magnet and a coil wiring connected thereto. The base board is disposed opposite to the magnet across the coil board and includes a base wiring and an opening through which the optical axis of the lens passes. The support portion relatively movably connects the movable unit to the fixed unit and supports the movable unit to the fixed unit. A first conductive portion conductively connecting the coil wiring and the base wiring in the fixed unit is disposed away from an opening periphery of the opening to an outside in a radial direction.

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

IPC: G02B7/02 ,  G02B7/04 ,  G02B7/08 ,  H02N2/00 ,  H02N2/02

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。

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 。

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

IPC: H02N2/06 ,  H02N2/02 ,  B06B1/06

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.

公开(公告)号：US10018649B2

公开(公告)日：2018-07-10

申请号：US15257511

申请日：2016-09-06

Applicant: TDK CORPORATION

Inventor： Kazushi Tachimoto ,  Yoshikazu Shimura ,  Akira Suzuki

IPC: G01P15/09

CPC classification number: G01P15/09

Abstract: An acceleration sensor capable of improving sensitivity is provided. In the acceleration sensor, although a solder fillet is formed in a lower end of a terminal electrode exposed from a covering portion, the covering portion suppresses the rise of the solder fillet. Due to this, the operation of the acceleration sensor is not easily limited by the solder fillet, and the acceleration sensor can generate electric charge which corresponds to a load more accurately. Therefore, the sensitivity of the acceleration sensor can be improved.