Patent ID: 8730590

Claim:
An image capturing lens system, in order from an object side to an image side comprising: a first lens element with positive refractive power having a convex object-side surface and a concave image-side surface; a second lens element with positive refractive power; a third lens element with positive refractive power; and a fourth lens element with positive refractive power having a convex object-side surface, a concave at a paraxial region and convex at a peripheral region image-side surface, and both of the object-side and image-side surfaces thereof being aspheric; wherein the lens elements of the image capturing lens system with refractive power are the first lens element, the second lens element, the third lens element and the fourth lens element, an axial distance between the object-side surface of the first lens element and an image plane is TL, a sum of central thicknesses of the first, the second, the third and the fourth lens elements is Z CT, a focal length of the image capturing lens system is f, a curvature radius of an object-side surface of the second lens element is R3, and they satisfy the following relations: 1.35 <TL/ΣCT< 1.95; and 0 <f/|R 3|<1.0.