Patent ID: 8854745

Claim:
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 image-side surface; a third lens element having refractive power; a fourth lens element having refractive power; a fifth lens element having refractive power; and a sixth lens element with refractive power having a concave image-side surface at a paraxial region thereof, wherein the image-side surface of the sixth lens element has at least one convex shape at a an off-axis region thereof, and both of the object-side surface and the image-side surface of the sixth lens element are aspheric; wherein the imaging lens assembly has a total of six non-cemented lens elements with refractive power and further includes a stop located between an imaged object and the first lens element, wherein a distance in parallel with an optical axis from a maximum effective diameter position on the object-side surface of the first lens element to an axial vertex on the object-side surface of the first lens element is SAG11, a shortest non-axial distance in parallel with the optical axis between the object-side surface of the first lens element and the image-side surface of the first lens element is ET1, a curvature radius of an object-side surface of the second lens element is R3, a curvature radius of the image-side surface of the second lens element is R4, an axial distance between the fifth lens element and the sixth lens element is T56, a central thickness of the sixth lens element is CT6, and the following relationships are satisfied: 1.75 <SAG 11 /ET 1; −0.2<( R 3 +R 4)/( R 3 −R 4)<5; and 0 <T 56 /CT 6<0.65.