Lens driving apparatus with closed-loop anti-shake structure
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United States of America Patent
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Feb 6, 2018
Issued Date -
N/A
app pub date -
Mar 31, 2016
filing date -
Apr 8, 2015
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Abstract
A lens driving apparatus with a closed-loop anti-shake structure, including: a lens holder comprising a coil; a frame comprising a plurality of magnets and receiving the lens holder; a driving circuit board comprising a plurality of coils corresponding to the plurality of magnets and disposed under the frame; a plurality of first set of elastic bodies configured such that the lens holder remains movable in a direction of a first axis with respect to the frame; a plurality of second set of elastic bodies configured such that the frame remains movable in a direction perpendicular to the first axis with respect to the driving circuit board; and a first optical module and a first optical reference respectively disposed at the driving circuit board and the lens holder, the first optical module sensing a relative movement of the first optical reference so as to sense a movement of the lens holder in the direction of the first axis.
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