Patent ID: 8345358

Claim:
An image-capturing optical lens assembly comprising, in order from an object side to an image side, a front lens group, a stop, and a rear lens group, wherein the front lens group comprises, in order from the object side to the image side: a first lens element with negative refractive power having a convex object-side surface and a concave image-side surface; a second lens element with positive refractive power having a convex object-side surface and a concave image-side surface; and the rear lens group comprises, in order from the object side to the image side: a third lens element with positive refractive power having a convex object-side surface and a convex image-side surface; a fourth lens element with negative refractive power; a fifth lens element with positive refractive power having a convex image-side surface, and wherein a central thickness of the fifth lens element is CT5, a focal length of the lens assembly is f, a curvature radius of the object-side surface of the first lens element is R1, a curvature radius of the image-side surface of the fifth lens element is R10, and they satisfy the following relations: 0<CT5/ f< 0.7; 0 <R 1 /f< 5.5; and R 10 /f <−0.85.