Zoom Lens, Imaging Optical Device, and Digital Apparatus
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United States of America Patent
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Issued Date -
Jan 31, 2013
app pub date -
Jul 6, 2012
filing date -
Jul 6, 2011
priority date (Note) -
Abandoned
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Abstract
A first lens unit having negative power, a second lens unit having positive power, a third lens unit having negative power, and a fourth lens unit having positive power are disposed in this order from an object side. At least the first lens unit to the third lens unit move to change intervals between lens units so that magnification is varied. The second lens unit has at least one air interval inside and is split into two lens units with a boundary of an air interval closest to an image side in the second lens unit, which includes a second-a lens unit on the object side and a second-b lens unit on the image side, and the second-b lens unit is moved in a plane substantially perpendicular to an optical axis for damping vibrations.
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