LENS DRIVING DEVICE AND OPTICAL PICKUP

摘要

PROBLEM TO BE SOLVED: To provide a lens driving device capable of accurately setting a lens at a target position.SOLUTION: A lens driving device 30 includes: a lens holder 31 for holding a lens 15; a driving part 33 for driving the lens holder 31 by an electro-magnetic force obtained by using a coil 331 and a magnet 332; and a guide shaft 32 for movably supporting the lens holder 31. When moving the lens holder 31 to a target position, an AC voltage is applied to the coil 331 for a predetermined period of time from the start of the movement, and the amplitude of the AC voltage is gradually decreased with time.