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    • 1. 发明专利
    • Camera module having mems actuator and driving method thereof
    • 具有MEMS致动器的摄像机模块及其驱动方法
    • JP2012008569A
    • 2012-01-12
    • JP2011139760
    • 2011-06-23
    • Lg Innotek Co Ltdエルジー イノテック カンパニー,リミティド
    • LEE JON-HYON
    • G02B7/02G02B7/04G02B7/08G03B17/02H04N5/225
    • G03B3/10G02B7/08G03B2205/0084
    • PROBLEM TO BE SOLVED: To provide a camera module having an MEMS actuator and a driving method thereof.SOLUTION: The camera module having the MEMS actuator includes: the MEMS actuator for moving a lens with electrostatic force, for focus adjustment; an electrostatic capacity measurement unit for measuring electrostatic capacity produced in the MEMS actuator; a foreign substance determination unit for determining whether foreign substances exist in the MEMS actuator or not by the variation of the electrostatic capacity measured by the electrostatic capacity measurement unit, and outputting a trigger signal if a foreign substance exists; and an MEMS actuator drive unit for driving the MEMS actuator to a reiterated vibration by the trigger signal outputted from the foreign substance determination unit.
    • 要解决的问题:提供一种具有MEMS致动器的相机模块及其驱动方法。 解决方案:具有MEMS致动器的相机模块包括:用于利用静电力移动透镜的MEMS致动器,用于聚焦调节; 用于测量在MEMS致动器中产生的静电电容的静电电容测量单元; 异物确定单元,用于通过由静电电容测量单元测量的静电电容的变化来确定MEMS致动器中是否存在异物,并且如果存在异物则输出触发信号; 以及MEMS致动器驱动单元,用于通过从异物确定单元输出的触发信号来驱动MEMS致动器到重复的振动。 版权所有(C)2012,JPO&INPIT