Patent ID: 8547650
Filing Date: 2013-10-01
Classification: G02B

Abstract:
1. An imaging lens assembly, comprising in order from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface; a second lens element with negative refractive power having a concave object-side surface; a third lens element with positive refractive power having a concave object-side surface and a convex image-side surface; a fourth lens element with negative refractive power; and a fifth lens element; wherein an on-axis spacing between the first lens element and the second lens element is T12, a focal length of the imaging lens assembly is f, and they satisfy the relation: 0.005<T12/f<0.25; and wherein the fifth lens element is made of plastic material, and the image-side surface of the fifth lens element is aspheric with at least one inflection point.