Wide-angle lens
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United States of America Patent
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Sep 13, 2016
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N/A
app pub date -
May 2, 2016
filing date -
May 12, 2015
priority date (Note) -
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Abstract
A wide-angle lens includes a first lens, a second lens, a third lens, a fourth lens, a fifth lens, a sixth lens and a seventh lens, all of which are arranged in sequence from an object side to an image side along an optical axis. The first, second lens are convex-concave lenses with negative refractive power and include a convex surface facing the object side and a concave surface facing the image side respectively. The third lens is with positive refractive power and includes a convex surface facing the image side. The fourth, seventh lens are biconvex lenses. The fifth, sixth lens are with refractive power. The fifth lens and the sixth lens satisfy: −10
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