Zoom lens and image pickup apparatus including the same
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United States of America Patent
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Jul 29, 2014
Grant Date -
Apr 25, 2013
app pub date -
Oct 16, 2012
filing date -
Oct 21, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A zoom lens includes, in order from an object side to an image side, first to fifth lens units respectively having positive, negative, positive, negative, and positive refractive powers. During zooming from a wide-angle end to a telephoto end, each of the lens units moves in such a way that a distance between the first and second lens units increases, a distance between the second and third lens units decreases, a distance between the third and fourth lens units increases, and a distance between the fourth and fifth lens units increases. The distances D34w and D34t between the third and fourth lens units, the distances D45w and D45t between the fourth and fifth lens units, focal lengths fw and ft of the entire zoom lens, and focal lengths f1 and f4 of the first and fourth lens units are appropriately set.
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Cited Art Landscape
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