Zoom lens and image pickup apparatus including the same
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United States of America Patent
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May 9, 2017
Issued Date -
N/A
app pub date -
Apr 14, 2015
filing date -
May 1, 2014
priority date (Note) -
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status (Latency Note)
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Abstract
A zoom lens includes, 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; a third lens unit having a positive refractive power that moves during zooming; and at least one lens unit having a positive refractive power, and focal lengths of the zoom lens at a wide angle end and a telephoto end, a maximum value of a half angle of field at the wide angle end, and products of lateral magnifications of lens units arranged on the image side of the third lens unit in a state in which focus is at infinity at the telephoto end and the wide angle end are appropriately set.
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