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公开(公告)号：US08958689B2
公开(公告)日：2015-02-17
申请号：US14260119
申请日：2014-04-23
申请人： Rohm Co., Ltd.
发明人： Akihito Saito , Koji Saito
CPC分类号： G02B27/646 , G03B5/00 , G03B2205/0007 , G03B2205/0015 , G03B2205/0069 , H04N5/2254 , H04N5/23287
摘要： There is provided a lens control device that feeds a motor current to a lens drive motor which drives lens according to the motor current, the lens control device including: a servo computation portion that calculates a motor current setting value such that a deviation of the position of the lens from a target position to which a correction offset has been added is reduced; a motor driver that generates the motor current according to the motor current setting value; and a calibration computation portion that adjusts the correction offset such that an average value of the motor current approaches zero.
摘要翻译： 提供一种透镜控制装置，其将电动机电流馈送到根据电动机电流驱动透镜的透镜驱动电动机，所述透镜控制装置包括：伺服计算部，其计算电动机电流设定值，使得位置的偏差 从已经添加了校正偏移的目标位置减去透镜; 电机驱动器，根据电动机电流设定值生成电动机电流; 以及校准计算部分，其调整校正偏移，使得电动机电流的平均值接近零。
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公开(公告)号：US08744254B2
公开(公告)日：2014-06-03
申请号：US13961620
申请日：2013-08-07
申请人： Rohm Co., Ltd.
发明人： Akihito Saito , Koji Saito
CPC分类号： G02B27/646 , G03B5/00 , G03B2205/0007 , G03B2205/0015 , G03B2205/0069 , H04N5/2254 , H04N5/23287
摘要： There is provided a lens control device that feeds a motor current to a lens drive motor which drives lens according to the motor current, the lens control device including: a servo computation portion that calculates a motor current setting value such that a deviation of the position of the lens to which a correction offset has been adjusted from a target position is reduced; a motor driver that generates the motor current according to the motor current setting value; and a calibration computation portion that adjusts the correction offset such that an average value of the motor current approaches zero.
摘要翻译： 提供一种透镜控制装置，其将电动机电流馈送到根据电动机电流驱动透镜的透镜驱动电动机，所述透镜控制装置包括：伺服计算部，其计算电动机电流设定值，使得位置的偏差 减少了从目标位置调整校正偏移的透镜; 电机驱动器，根据电动机电流设定值生成电动机电流; 以及校准计算部分，其调整校正偏移，使得电动机电流的平均值接近零。
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3.发明授权公开(公告)号：US12106893B2
公开(公告)日：2024-10-01
申请号：US17438868
申请日：2020-03-12
申请人： ROHM CO., LTD.
CPC分类号： H01F41/041 , H01F5/003 , H01F5/06 , H01F41/127 , H04N23/54
摘要： A coil module includes a conductor layer, at least one element, and a sealing resin. The conductor layer is formed along a predetermined plane and includes a wiring portion and a helical-shaped coil portion. The at least one element is mounted on the wiring portion. The sealing resin covers the conductor layer and the at least one element. The sealing resin is integrally formed of a single type of resin material and has a predetermined thickness in a first direction perpendicular to the plane.
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公开(公告)号：US11914219B2
公开(公告)日：2024-02-27
申请号：US17348030
申请日：2021-06-15
申请人： ROHM CO., LTD.
发明人： Jun Maede , Akihito Saito , Yoshihiro Sekimoto
CPC分类号： G02B7/028 , G01D3/036 , G01D3/0365 , G01D5/145 , G01J1/0403 , G01K13/00 , G02B7/08 , H02K11/215 , H02K11/22
摘要： A position detection unit generates a position detection value PFB that indicates the position of a control target. A temperature detection unit generates a temperature detection value that indicates the temperature. A correction unit corrects the position detection value PFB. A controller generates a control instruction value SREF such that the position detection value PFB_CMP subjected to the correction matches a position instruction value PREF that indicates the target position of the control target. A driver unit applies a driving signal that corresponds to the control instruction value SREF to an actuator. The correction unit corrects the position detection value PFB such that the relation between the position detection value PFB and the actual position exhibits linearity that is uniform independent of the temperature.
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5.发明授权公开(公告)号：US10469752B2
公开(公告)日：2019-11-05
申请号：US15989821
申请日：2018-05-25
申请人： ROHM CO., LTD.
摘要： An imaging device includes: imaging lens displaceable in first and second directions in plane perpendicular to optical axis; actuator positioning the imaging lens in the first and second directions; position detector generating first and second position detection signals Hx and Hy, Hx including crosstalk component caused by displacing the imaging lens in the second direction, and Hy including crosstalk component caused by displacing the imaging lens in the first direction; crosstalk compensator correcting Hx and Hy to reduce crosstalk components included in Hx and Hy; and driver controlling the actuator based on corrected first and second position detection signals Hx′ and Hy′, wherein when ratio of Hy to Hx while driving the imaging lens in the first direction is α and ratio of Hx to Hy while driving the imaging lens in the second direction is β, the crosstalk compensator reduces crosstalk components included in Hx and Hy.
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公开(公告)号：US20130322861A1
公开(公告)日：2013-12-05
申请号：US13961620
申请日：2013-08-07
申请人： Rohm Co., Ltd.
发明人： Akihito Saito , Koji Saito
IPC分类号： G02B27/64
CPC分类号： G02B27/646 , G03B5/00 , G03B2205/0007 , G03B2205/0015 , G03B2205/0069 , H04N5/2254 , H04N5/23287
摘要： There is provided a lens control device that feeds a motor current to a lens drive motor which drives lens according to the motor current, the lens control device including: a servo computation portion that calculates a motor current setting value such that a deviation of the position of the lens to which a correction offset has been adjusted from a target position is reduced; a motor driver that generates the motor current according to the motor current setting value; and a calibration computation portion that adjusts the correction offset such that an average value of the motor current approaches zero.
摘要翻译： 提供一种透镜控制装置，其将电动机电流馈送到根据电动机电流驱动透镜的透镜驱动电动机，所述透镜控制装置包括：伺服计算部，其计算电动机电流设定值，使得位置的偏差 减少了从目标位置调整校正偏移的透镜; 电机驱动器，根据电动机电流设定值生成电动机电流; 以及校准计算部分，其调整校正偏移，使得电动机电流的平均值接近零。
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公开(公告)号：US11218624B2
公开(公告)日：2022-01-04
申请号：US16989081
申请日：2020-08-10
发明人： Akihito Saito , Tatsuya Ninomiya , Nobuo Kohmura , Kento Nishizawa , Tatsuro Shimizu , Takahiro Akahane , Go Asayama , Yuki Urano
摘要： An image sensor includes a pixel array including multiple pixels. A lens is provided on an optical path of incident light to the image sensor. An actuator includes a coil, and supports positioning of the lens according to a driving signal applied to the coil. A position detection coil is arranged such that it magnetically couples with the coil of the actuator. An actuator driver supplies a pulse-shaped driving signal to the coil of the actuator driver. A position detection circuit generates a position detection signal that indicates the position of the lens based on an induced electromotive force that occurs in the position detection coil according to the driving signal, and feeds back the position detection signal to the actuator driver.
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公开(公告)号：US10999508B2
公开(公告)日：2021-05-04
申请号：US16444457
申请日：2019-06-18
申请人： ROHM CO., LTD.
发明人： Shinichi Abe , Akihito Saito , Yoshihiro Sekimoto
摘要： The present invention reduces magnetic fog noise of an actuator.
An actuator is used jointly with a position detection element to locate a lens in a direction of a first axis. A coil is formed in a manner of setting a second axis perpendicular to the first axis as a length direction, and has a first side and a second side parallel to the second axis, and a third side and a fourth side parallel to the first axis. A permanent magnet produces magnetic fields perpendicular to the first axis and the second axis and being in opposite directions with respect to the first side and the second side, respectively. During use, the position detection element is configured near the third side. The coil is split into multiple parts in a width direction on at least the third side.-
公开(公告)号：US11483459B2
公开(公告)日：2022-10-25
申请号：US17123272
申请日：2020-12-16
申请人： ROHM Co., LTD.
发明人： Akihito Saito , Yoshihiro Sekimoto
摘要： Disclosed is a camera module including an imaging lens supported in such a manner as to be displaceable in a first direction, an image sensor supported in such a manner as to be displaceable in a second direction different from the first direction, a first actuator that carries out positioning of the imaging lens in the first direction, and a second actuator that carries out positioning of the image sensor in the second direction. Autofocus operation is carried out by one of the first actuator, and the second actuator and optical image stabilization operation is carried out by the other of the first actuator and the second actuator.
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公开(公告)号：US11067767B2
公开(公告)日：2021-07-20
申请号：US15726802
申请日：2017-10-06
申请人： ROHM CO., LTD.
发明人： Jun Maede , Akihito Saito , Yoshihiro Sekimoto
摘要： A position detection unit generates a position detection value PFB that indicates the position of a control target. A temperature detection unit generates a temperature detection value that indicates the temperature. A correction unit corrects the position detection value PFB. A controller generates a control instruction value SREF such that the position detection value PFB_CMP subjected to the correction matches a position instruction value PREF that indicates the target position of the control target. A driver unit applies a driving signal that corresponds to the control instruction value SREF to an actuator. The correction unit corrects the position detection value PFB such that the relation between the position detection value PFB and the actual position exhibits linearity that is uniform independent of the temperature.
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