Zoom lens
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United States of America Patent
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Aug 25, 2015
Grant Date -
Jun 5, 2014
app pub date -
Nov 27, 2013
filing date -
Dec 5, 2012
priority date (Note) -
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status (Latency Note)
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Abstract
A zoom lens includes a first lens group, a second lens group, a third lens group and a fourth lens group, all of which are arranged in sequence from an object side to an image side along an optical axis. The first lens group is with positive refractive power and includes a first lens that is with negative refractive power and a second lens that is with positive refractive power. The second lens group is with negative refractive power. The third lens group is with positive refractive power and includes a third lens front group that is with positive refractive power and a third lens rear group that is with positive refractive power. The fourth lens group is with positive refractive power.
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