Zoom lens and imaging apparatus
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United States of America Patent
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Nov 28, 2017
Grant Date -
Jul 2, 2015
app pub date -
Mar 12, 2015
filing date -
Sep 14, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A zoom lens consists of a first lens group having positive refractive power, a second lens group having negative refractive power, a third lens group having positive refractive power, a fourth lens group having negative refractive power, and a fifth lens group having positive refractive power in this order from an object side. The third lens group includes a cemented lens closest to the object side and a cemented lens closest to an image side, and the fourth lens group consists of a negative lens and a positive lens in this order from the object side. Distances between the lens groups change, and the fifth lens group is fixed, and at least the first lens group and the fourth lens group move when magnification is changed from the wide angle end to the telephoto end.
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