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1. 发明专利

JP2012123406A Shape-memory-alloy driving system 审中-公开
标题翻译：形状记忆合金驱动系统
公开(公告)号：JP2012123406A
公开(公告)日：2012-06-28
申请号：JP2012015266
申请日：2012-01-27
申请人： Cambridge Mechatronics Ltd , ケンブリッジメカトロニクスリミテッド
发明人： RICHARD TOPLIS , WEBBER DOMINIC GEORGE , ROBERT JOHN LEEDHAM , ANTHONEY HOLLEY , RICHARD DAVID CHARLES WILSON , GREGORY THOMAS MATTHEW
IPC分类号： G02B7/04 , F03G7/06 , G02B7/08
CPC分类号： G03B3/10 , F03G7/065 , H04N5/2254 , H04N5/23212
摘要： PROBLEM TO BE SOLVED: To provide a camera lens element driving system capable of being downsized and of performing accurate drive because of a shape-memory-alloy (SMA) actuator.SOLUTION: A camera lens element driving system comprises: a supporting structure 2; a camera lens element that is supported on the supporting structure by a suspension system; and an SMA actuator 30 that is connected to a position between the supporting structure and a movable element and drives a movement of the camera lens element. The driving system executes a preliminary calibration operation including: a step for heating the SMA actuator 30; a step for monitoring a measurement resistance; a step for detecting a maximum resistance and a minimum resistance; and a step for deriving and storing a size of resistance range that is equal to or less than a difference between a value of the detected maximum resistance and a value of the detected minimum resistance. Then, the driving system applies heat within the stored resistance range in a focus detection operation.
摘要翻译：要解决的问题：提供一种能够由于形状记忆合金（SMA）致动器而被小型化并执行精确驱动的照相机镜头元件驱动系统。解决方案：相机镜头元件驱动系统包括：支撑结构2; 通过悬挂系统支撑在所述支撑结构上的相机镜头元件; 以及SMA致动器30，其连接到支撑结构和可移动元件之间的位置，并驱动相机透镜元件的移动。驱动系统执行初步校准操作，包括：用于加热SMA致动器30的步骤; 监测测量电阻的步骤; 用于检测最大电阻和最小电阻的步骤; 以及用于导出和存储电阻范围的大小等于或小于检测到的最大电阻的值与检测到的最小电阻的值之间的差的步骤。然后，驱动系统在焦点检测操作中在存储的电阻范围内施加热量。版权所有（C）2012，JPO＆INPIT

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