Imaging lens, and imaging device and mobile terminal apparatus using the same
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United States of America Patent
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Feb 1, 2011
Grant Date -
Jan 21, 2010
app pub date -
Dec 21, 2007
filing date -
Dec 22, 2006
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A first lens (L1), a second lens (L2), a third lens (L3), and a fourth lens (L4) are arranged in this order from an object side. The first lens (L1) has a biconvex shape and a positive refracting power. The second lens (L2) has a meniscus shape that is convex toward the object side, and has a negative refracting power. The third lens (L3) has a meniscus shape that is convex toward an image side, and has a positive refracting power. The fourth lens (L4) has a meniscus shape that is convex toward the object side, and has a negative refracting power. A chromatic aberration generated by the first lens (L1) is corrected by the second lens (L2). A chromatic aberration generated by the third lens (L3) is corrected by the fourth lens (L4).
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