公开(公告)号：US10560045B1

公开(公告)日：2020-02-11

申请号：US16225424

申请日：2018-12-19

Applicant: Industrial Technology Research Institute

Inventor： Chieh-Yi Huang

IPC: H02P25/034 ,  H02P6/28 ,  G05F1/445

Abstract: A driving device for multi-axis common-mode voice coil motor is provided, which includes a control signal processing interface and a plurality of drive-stage circuits. The control signal processing interface generates a plurality of control signals and a plurality of command signals. The drive-stage circuits receive the control signals and the command signals respectively; each of the drive-stage circuits is connected to one end of one of the coils of a voice coil motor and includes a half-bridge switch circuit; the drive-stage circuit controls the half-bridge switch circuit to generate a driving current to drive the coil according to the control signal. The drive-stage circuit compares the feedback signal of the feedback elements of the coil loop with the command signal to generate an adjustment signal and adjusts the driving current according to the adjustment signal, such that the driving current can track the command signal.

公开(公告)号：US10156733B2

公开(公告)日：2018-12-18

申请号：US15388946

申请日：2016-12-22

Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE

Inventor： Shou-Cheng Ma ,  Cheng-Hsuan Lin ,  Wen-Yang Peng ,  Chieh-Yi Huang ,  Chau-Shin Jang

IPC: G02B27/64 ,  G02B7/09 ,  G02B7/08 ,  H02K41/035

Abstract: A lens device comprises a connect assembly, a lens assembly and a drive assembly. The lens assembly is disposed on the connect assembly and has a central axis. The drive assembly comprises a first coil, a magnet and a second coil. The first coil is wound around the lens assembly. The magnet is disposed on the connect assembly and has a first magnetic pole, a second magnetic pole, a first direction of magnetic field and a second direction of magnetic field. The first direction of magnetic field and the second direction of magnetic field are not parallel to each other. The first direction of magnetic field points toward the first coil. The second coil is disposed on the connect assembly. The second direction of magnetic field points toward a part of the second coil.