Patent ID: 9435984
Filing Date: 2016-09-06
CPC Classification: G02B,H04N

Claim Text:
1. An imaging lens system including, 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 convex object-side surface and a concave image-side surface; a third lens element having both of an object-side and an image-side surfaces thereof being aspheric; a fourth lens element having a concave object-side surface; and a fifth lens element having both of an object-side and an image-side surfaces thereof being aspheric, and at least one surface thereof being provided with at least one inflection point; wherein the imaging lens system further comprises an aperture stop disposed between an imaged object and the first lens element; wherein the lens elements in the imaging lens system are only the first, second, third, fourth and fifth lens elements; and wherein an Abbe number of the first lens element is V1, an Abbe number of the second lens element is V2, and the following relation is satisfied: