Optical imaging lens
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United States of America Patent
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-
Jan 10, 2012
Grant Date -
Apr 7, 2011
app pub date -
Apr 10, 2008
filing date -
Apr 10, 2008
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An optical imaging lens, from object side to image side, includes a positive first lens element that is a meniscus aspherical lens having a convex surface on the object side, an aperture stop, a negative second lens element that is a meniscus aspherical lens having a convex surface on the image side, a positive third lens element that is an aspherical lens while on the lens center, the convex surface is on the object side; and from the center toward the edge, the refractive power changes from positive power, through an inflection point, to negative power. The optical imaging lens satisfies specific mathematical conditions.
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