Patent ID: 8477433

Claim:
An optical imaging lens assembly comprising, in order from an object side to an image side: a first lens element with positive refractive power; a second lens element with negative refractive power; a third lens element with positive refractive power having a convex image-side surface; and a fourth lens element with negative refractive power having a concave image-side surface, and at least one of the object-side and the image-side surfaces of the fourth lens element being aspheric; wherein the optical imaging lens assembly further comprises a stop and an image sensor, the image sensor is disposed on an image plane, a radius of curvature of the object-side surface of the fourth lens element is R7, a radius of curvature of the image-side surface of the fourth lens element is R8, an axial distance between the stop and the image plane is SL, an axial distance between the object-side surface of the first lens element and the image plane is TTL, one half of the diagonal length of the effective photosensitive area of the image sensor is Imgh, a focal length of the fourth lens element is f4, an axial distance between the second lens element and the third lens element is T23, and following conditions are satisfied: −0.7 <R 8/ R 7<0.0; 0.9 <SL/TTL< 1.1; 1.15 <TTL/Imgh< 1.65; and −3.0 <f 4/ T 23<−1.5.