Patent ID: 8810921

Claim:
An image capturing lens system comprising, in order from an object side to an image side: a first lens element having positive refractive power; a second lens element with positive refractive power having a convex object-side surface; a third lens element having negative refractive power; a fourth lens element with positive refractive power having a convex image-side surface; and a fifth lens element with negative refractive power having a concave image-side surface, wherein both of an object-side surface and the image-side surface of the fifth lens element are aspheric, and at least one inflection point is formed on at least one of the object-side surface and the image-side surface of the fifth lens element; wherein the image capturing lens system has a total of five lens elements with refractive power, an axial distance between the second lens element and the third lens element is T23, a central thickness of the second lens element is CT2, a focal length of the second lens element is f2, a curvature radius of the object-side surface of the second lens element is R3, a curvature radius of the object-side surface of the fifth lens element is R9, a curvature radius of the image-side surface of the fifth lens element is R10, and the following relationships are satisfied: 0.75 <T 23 /CT 2<3.0; 2.0 <f 2 /R 3<15.0; and 0<( R 9 +R 10)/( R 9 −R 10).