公开(公告)号：US11009090B2

公开(公告)日：2021-05-18

申请号：US16057974

申请日：2018-08-08

申请人： ILLINOIS TOOL WORKS INC.

发明人： Andrew Kirby ,  James A. Cooke

IPC分类号： F16D66/00 ,  F16D69/02 ,  F16D65/28 ,  F16D63/00 ,  H02P3/06 ,  H02P3/04 ,  H02P7/025 ,  H02P3/16 ,  H02P15/00 ,  F16D59/02 ,  G01D11/16 ,  F16D121/20 ,  F16D121/18 ,  G05B19/406 ,  G05B19/416 ,  F16D121/22 ,  F16D125/64 ,  F16D127/02 ,  F16D129/04

摘要： A method for preventing motion of an output shaft (401), of an electromagnetic motor comprising a coil assembly, when a mechanical brake (400) is released, comprising the steps of: determining the position of the output shaft (401); correlating the position of the output shaft (401) with a current such that when applied in the coil assembly induces a force on the output shaft (401) to prevent motion of the output shaft (401) when the mechanical brake (400) is released.

公开(公告)号：US20210021771A1

公开(公告)日：2021-01-21

申请号：US17040046

申请日：2019-03-15

申请人： SONY SEMICONDUCTOR SOLUTIONS CORPORATION

发明人： KATSUJI KIMURA ,  REI TAKAMORI ,  HIROKAZU SEKI

IPC分类号： H04N5/357 ,  G02B7/09 ,  G02B27/64 ,  G03B13/36 ,  G03B5/00 ,  H02P6/00 ,  H02P6/16 ,  H02P7/025 ,  H02K11/225 ,  H02K41/035

摘要： The present technology relates to an imaging device and an electronic device that enable highly accurate adjustment of a focus position and a camera shake correction position. The device includes: a lens that focuses subject light; an imaging element that photoelectrically converts the subject light from the lens; a circuit substrate including a circuit that externally outputs a signal from the imaging element; an actuator that drives the lens with a Pulse Width Modulation (PWM) waveform in at least one of an X-axis direction, a Y-axis direction, or a Z-axis direction; and a detection unit that detects a magnetic field generated by a coil included in the actuator. The actuator drives the lens to move a focus, or drives the lens to reduce an influence of camera shake. The present technology can be applied to the imaging device.

公开(公告)号：US20200161998A1

公开(公告)日：2020-05-21

申请号：US16684951

申请日：2019-11-15

申请人： KOREA INSTITUTE OF MACHINERY & MATERIALS

发明人： Hyunchang KIM ,  Dongwoo KANG ,  Kwang-Young KIM

IPC分类号： H02P7/025 ,  H02K41/035 ,  H02K11/215

摘要： A linear motor according to an exemplary embodiment of the present invention includes a frame having a bottom and two sidewalls and extending in a longitudinal direction, multiple coil modules repeatedly disposed on the bottom in the longitudinal direction and configured to constitute a stator, a mover disposed on the two sidewalls in a width direction intersecting the longitudinal direction, the mover being movable in the longitudinal direction, thrust magnets mounted at a lower side of the mover and selectively corresponding to the multiple coil modules, and a Hall switching board mounted on an inner surface of one of the two sidewalls and having first Hall sensors (switching Hall sensors) operated by a magnetic field corresponding to the thrust magnets so that a driver controls phase conversion of the multiple coil modules.

公开(公告)号：US20200089021A1

公开(公告)日：2020-03-19

申请号：US16694749

申请日：2019-11-25

申请人： STMicroelectronics, Inc.

发明人： Mark A. Lysinger ,  Pavan Nallamothu ,  Chih-Hung TAI ,  James L. WORLEY

IPC分类号： G02B27/64 ,  H02P7/025 ,  H02K41/035

摘要： Various embodiments provide an optical image stabilization circuit including a drive circuit having a power waveform generator and a power waveform conversion circuit. The power waveform generator generates a power waveform. The power waveform conversion circuit converts the power waveform to a power drive signal. An actuator is then driven by the power drive signal to move a lens accordingly and compensate for any movements and vibrations of a housing of the lens.

公开(公告)号：US10574914B2

公开(公告)日：2020-02-25

申请号：US16002214

申请日：2018-06-07

申请人： SEMICONDUCTOR COMPONENTS INDUSTRIES, LLC

发明人： Yoshihisa Tabuchi ,  Atsushi Noda

IPC分类号： H04N5/357 ,  H03F3/45 ,  H04N5/232 ,  H02P7/025 ,  G02B7/10 ,  G03B5/00 ,  G03B13/36 ,  H02P7/292

摘要： Various embodiments of the present technology may comprise methods and apparatus for actuator control. The methods and apparatus may comprise various circuits and/or systems to detect an induced voltage and various signal processing functions to utilize the induced voltage to control the actuator. The apparatus for actuator control may comprise an induced voltage detection circuit and adjust the actuator position according to the detected induced voltage.

公开(公告)号：US10527867B2

公开(公告)日：2020-01-07

申请号：US15958808

申请日：2018-04-20

申请人： STMicroelectronics, Inc.

发明人： Mark A. Lysinger ,  Chih-Hung Tai ,  James L. Worley ,  Pavan Nallamothu

IPC分类号： G02B27/64 ,  G03B5/00 ,  H02K41/035 ,  H04N5/225 ,  H04N5/232 ,  H02P7/025

摘要： Various embodiments provide an optical image stabilization circuit including a drive circuit having a power waveform generator and a power waveform conversion circuit. The power waveform generator generates a power waveform. The power waveform conversion circuit converts the power waveform to a power drive signal. An actuator is then driven by the power drive signal to move a lens accordingly and compensate for any movements and vibrations of a housing of the lens.

公开(公告)号：US10374530B2

公开(公告)日：2019-08-06

申请号：US15901859

申请日：2018-02-21

申请人： Invetech, Inc.

发明人： Kevin McCarthy

IPC分类号： H02K41/00 ,  H02P5/68 ,  H02K41/035 ,  H02K5/173 ,  H02K11/22 ,  H02K41/03 ,  H01R12/72 ,  H02K11/33 ,  H02P7/025 ,  H02K5/22 ,  H02K16/00 ,  H02K11/35

摘要： A dual axis linear motion system utilizing one or more printed circuit boards embedded within a stage wherein the system components, including the controller, drive, and controller, may be mounted to a printed circuit board (PCB), and the electrical communications between the system components and the power to the system components are supplied through traces or etchings on the printed circuit board, thereby omitting the need for additional power and communication cables.

公开(公告)号：US10222579B2

公开(公告)日：2019-03-05

申请号：US15142951

申请日：2016-04-29

申请人： LG INNOTEK CO., LTD.

发明人： Sang Ok Park ,  Hyun Rae Cho ,  Seong Min Lee ,  Jun Taek Lee

IPC分类号： G02B7/00 ,  G02B7/02 ,  G02B7/08 ,  G02B7/09 ,  H02P7/025 ,  H04N5/232 ,  H02K41/035

摘要： An exemplary embodiment of the present invention a rotor including a lens and formed with a first driving unit, a stator formed with a second driving unit driving the rotor in response to electromagnetic interaction with the first driving unit, and a base on which the stator is fixed, wherein the rotor is brought into contact with the base, in a case the lens is in a UP posture, and the rotor is distanced from the base, in a case the lens is in a DOWN posture.

公开(公告)号：US20180287530A1

公开(公告)日：2018-10-04

申请号：US15794289

申请日：2017-10-26

申请人： SAMSUNG ELECTRO-MECHANICS CO., LTD.

发明人： Sung Man PANG

IPC分类号： H02P7/025

CPC分类号： H02P7/025 ,  H02K11/33 ,  H02K41/0356 ,  H02P25/034

摘要： An apparatus for driving an actuator includes a driving coil configured to generate magnetic force depending on driving signals, a control circuit configured to provide a first control signal and a second control signal, and a driving circuit including a high-side switch and a low-side switch connected to the driving coil, the high-side switch and the low-side switch configured to generate the driving signals based on the first and second control signals, respectively, and to provide the driving signals to the driving coil, wherein the control circuit is further configured to control the driving circuit so that the high-side switch is operated as a current source using the first control signal, and to control the driving circuit so that the low-side switch is driven in a pulse width modulation (PWM) scheme using the second control signal.

公开(公告)号：US20170264813A1

公开(公告)日：2017-09-14

申请号：US15455018

申请日：2017-03-09

申请人： LG ELECTRONICS INC.

发明人： Haejin PARK ,  Sungdu KWON ,  Youngman KWON ,  Jayong LEE ,  Taegil CHO ,  Salkmann JI ,  Samnyol HONG

IPC分类号： H04N5/232 ,  G05D3/14 ,  H02P29/64 ,  G02B7/28 ,  H02P7/025

CPC分类号： H04N5/23212 ,  G02B7/08 ,  G02B7/09 ,  G02B7/28 ,  G02B7/36 ,  G02B7/365 ,  G02B27/646 ,  G05D3/14 ,  H02P7/025 ,  H02P29/64 ,  H02P2203/00 ,  H04N5/06 ,  H04N5/23248 ,  H04N5/23254

摘要： Disclosed are an apparatus and method for controlling auto focus of a camera module. The present invention includes a lens unit, a moving coil, a fixed coil, and a controller configured to provide a signal comprising first frequency signal and second frequency signal to the moving coil, the fixed coil receiving the variable current or the variable voltage through the second frequency signal, calculate a focus position value based on the received variable current or the variable voltage and an image signal, and control the lens unit to move by applying the first frequency signal to the moving coil according to the calculated focus position value, wherein the controller is further configured to detect a temperature change of the fixed coil and to correct a focus position of the lens unit corresponding to the detected temperature change of the fixed coil.