Mobile device and optical imaging lens thereof
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United States of America Patent
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Jan 6, 2015
Issued Date -
N/A
app pub date -
Feb 19, 2013
filing date -
Jul 20, 2012
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Abstract
Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises four lens elements positioned in an order from the object side to the image side. Through controlling the convex or concave shape of the surfaces of the lens elements, the thickness of the at least one lens element, an air gap between two lens elements, and a sum of all air gaps between all four lens elements along the optical axis satisfying the relations: (T3/G34)>4 and (Gaa/T3)>1, wherein T3 is the thickness of the third lens element, G34 is the air gap between the third lens element and the fourth lens element, and Gaa is the sum of all air gaps between all four lens elements, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.
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