Lens driving device and optical pickup
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United States of America Patent
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Oct 6, 2015
Grant Date -
May 8, 2014
app pub date -
Oct 4, 2013
filing date -
Nov 7, 2012
priority date (Note) -
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Abstract
A lens driving device includes a lens holder that holds a lens, a driving portion that drives the lens holder through a magnetic force produced using a coil and a magnet, and a guide shaft that supports the lens holder movably. When moving the lens holder to a target position, an AC voltage is applied to the coil over a specific interval from a beginning of movement of the lens holder. Further, an amplitude of the AC voltage is reduced stepwise with the passage of time.
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