Photographic Lens Optical System
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United States of America Patent
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Jun 25, 2015
app pub date -
Dec 11, 2014
filing date -
Dec 24, 2013
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Abstract
A photographic lens optical system includes: a first lens having a negative refractive power and a meniscus shape convex toward an object side; a second lens having a negative refractive power and a meniscus shape convex toward the object side; a third lens having a positive refractive power and a meniscus shape convex toward the object side; and a fourth lens having a positive refractive power and a double convex shape, wherein the first to fourth lenses are sequentially arranged in a direction from the object side to an image side, and the photographic lens optical system satisfies the following condition:
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