Zoom lens and image device using the same
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United States of America Patent
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Jan 23, 2018
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N/A
app pub date -
Mar 16, 2016
filing date -
Dec 28, 2015
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Abstract
A zoom lens includes a first lens group having a negative refractive power, a second lens group having a positive refractive power, a third lens group having a negative refractive power, and an image plane in an order from object-side to image-side. The first lens group includes a first lens having a positive refractive power and a second lens having a negative refractive power in the order from object-side to image-side. The second lens group includes a third lens having a positive refractive power, a fourth lens having a negative refractive power, and a fifth lens having a positive refractive power in the order from object-side to image-side. The third lens group includes at least one sixth lens.
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