Actuator and object detecting apparatus that uses actuator using distance detection

An actuator includes a blade spring of which one end is fixed to a fixed member and other end is fixed to a movable member. A driving unit moves the movable member. A position detector detects a distance to a flat portion of the blade spring, and a calculating unit calculates an amount of displaceme...

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Bibliographic Details
Main Authors Tominaga, Jun, Shigematsu, Ryouhei, Matsumoto, Atsuo
Format Patent
LanguageEnglish
Published 13.06.2006
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Summary:An actuator includes a blade spring of which one end is fixed to a fixed member and other end is fixed to a movable member. A driving unit moves the movable member. A position detector detects a distance to a flat portion of the blade spring, and a calculating unit calculates an amount of displacement of the movable member based on the distance detected by the position detector.