Driving apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
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-
Jan 11, 2011
Grant Date -
Jun 4, 2009
app pub date -
Nov 26, 2008
filing date -
Nov 29, 2007
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A driving apparatus includes a piezoelectric element which expands and contracts when a voltage is applied thereto, a driving shaft fixed to one end of the piezoelectric element in an expanding-and-contracting direction, a friction part frictionally engaged with the driving shaft, a lens holder moved along a direction of an optical axis of a lens, and a direction-changing unit which reciprocates the lens holder in the front-rear direction along the optical axis. The direction-changing unit includes a translation cam mechanism including a moving member and a moved member, and converts a linear movement along the expanding-and-contracting direction into a linear movement along the direction of the optical axis.
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