An imaging lens assembly with five lenses

摘要

An imaging lens assembly comprises a fixing diaphragm (30) and an optical set including five lenses. An arranging order from an object side to an image side is: a first positive lens (10); a second positive lens (20); a third positive lens (40); a fourth negative lens (50); a fifth lens (60) having a convex surface with a corrugated contour and a concave surface with a corrugated contour, at least one surface of the first, second, and third lenses (10), (20), (40) is aspheric, and at least one surface of the fourth and fifth lenses (50),(60) is aspheric; and the fixing diaphragm (30) disposed between an object and the third lens (40) . By the concatenation between the lenses and the adapted curvature radius, thickness, interval, refractivity, and Abbe numbers, the assembly attains a big diaphragm with wide-angle, a shorter height, and a better optical aberration.