公开(公告)号：US20040257672A1

公开(公告)日：2004-12-23

申请号：US10754047

申请日：2004-01-07

申请人： LG Electronics Inc.

发明人： Youngjoo Yee ,  Chang-Hyeon Ji ,  Seong-Hyok Kim

IPC分类号： G02B015/14

CPC分类号： G02B26/0875

摘要： A micro actuator for controlling a focal depth includes: a lens for forming a focal pint by focusing light coming from a light source; a lens mounting unit having a lens mounted therein and allowing the lens to move in one axial direction; and an electromagnetic force generator consisting of a constant magnetic field generating member having a magnetic field in a predetermined direction and an variable magnetic field generating member for changing direction and strength of a magnetic field according to direction and amount of a current, installed at and around the lens mounting unit and causing the lens to move in a direction of an electromagnetic force generated by interaction of the two magnetic field generating members. The micro actuator for controlling a focal depth can be fabricated in a ultra-compact size, available for a mass production, and has a fast response speed.

摘要翻译： 用于控制焦深的微致动器包括：用于通过聚焦来自光源的光形成焦点品脱的透镜; 透镜安装单元，其具有安装在其中的透镜，并允许透镜沿一个轴向移动; 以及电磁力发生器，其由具有预定方向的磁场的恒定磁场产生部件和可变磁场产生部件组成，用于根据安装在其周围的电流的方向和量来改变磁场的方向和强度 透镜安装单元，并且使透镜沿着由两个磁场产生部件的相互作用产生的电磁力的方向移动。 用于控制焦深的微型致动器可以制造成超小型尺寸，可用于批量生产，并且具有快速的响应速度。