PHOTOGRAPHING LENS OPTICAL SYSTEM
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United States of America Patent
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Issued Date -
Mar 6, 2014
app pub date -
Sep 5, 2012
filing date -
Sep 5, 2012
priority date (Note) -
Abandoned
status (Latency Note)
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Abstract
A lens optical system including first, second, third, fourth, and fifth lenses sequentially arranged between an object and an image sensor on which an image of the object is formed, in order from a side of the object. The first lens has a positive (+) refractive power and is biconvex. The second lens has a negative (−) refractive power and a meniscus shape convex toward the object. The third lens has a negative (−) refractive power. The fourth lens has a positive (+) refractive power and a meniscus shape convex toward the image sensor. The fifth lens has a negative (−) refractive power, and at least one of an incident surface and an exit surface of the fifth lens is an aspherical surface. A focal length f1 of the first lens and a total length TL of the lens optical system satisfies inequality: 0.5
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