WIDE-ANGLE IMAGING LENS ASSEMBLY WITH TWO LENSES
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United States of America Patent
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Issued Date -
Dec 25, 2014
app pub date -
Aug 20, 2013
filing date -
Jun 20, 2013
priority date (Note) -
Abandoned
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Abstract
A wide-angle imaging lens assembly comprises a fixing diaphragm and an optical set including two lenses. An arranging order from an object side to an image side is: a first lens with a positive refractive power, a convex surface directed toward the object side, and a convex surface directed toward the image side; and a second lens with a positive refractive power, a concave surface directed toward the object side, and a convex surface directed toward the image side. Two surfaces of the two lenses are aspheric. The fixing diaphragm is disposed between an object and the second lens. By the concatenation between the lenses and the adapted curvature radius, thickness/interval, refractivity, and Abbe numbers, the assembly attains a big diaphragm with ultra-wide-angle, a shorter height, and a better optical aberration.
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