| 摘要 |
PROBLEM TO BE SOLVED: To provide a lens driving device in which a movable part mounted with a lens is linearly moved by screwing between a lead screw and a nut and which solves the problem that vibration occurs in the movable part due to the collision of a member for stopping the rotation of a nut due to the rotational driving force of a motor and the reaction force thereof, and the problem that biting occurs between the nut and the lead screw when the lead screw cannot be instantaneously stopped after the movable part is brought into contact with the stopper to be stopped. SOLUTION: The lens driving device 30 includes: a movable part holding a lens; a guide member guiding the movable part in the direction of a lens optical axis; a base 1 fitted with the guide member; a first elastic member 22a energizing the movable part in one direction; a lead screw rotatably driven by a motor; a nut which is screwed with the lead screw, and with which the movable part energized by the first elastic member is brought into contact; and a second elastic member energizing the nut to regulate the rotation of the nut around the rotary axis of the lead screw. COPYRIGHT: (C)2011,JPO&INPIT
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