Zoom lens having a high zoom ratio and high performance over an entire zoom range and image pickup apparatus including the same
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United States of America Patent
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Apr 16, 2019
Grant Date -
Nov 5, 2015
app pub date -
Apr 24, 2015
filing date -
May 1, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
Provided is a zoom lens, including, in order from an object side to an image side: a first lens unit having a positive refractive power that does not move for zooming; a second lens unit having a negative refractive power that moves during zooming; at least one lens unit that moves during zooming; and a rear lens unit including an aperture stop, in which a focal length of the zoom lens at a wide angle end, a focal length of the first lens unit, a focal length of the second lens unit, and a half angle of field of the zoom lens at the wide angle end are appropriately set.
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