Patent ID: 8854744

Claim:
An optical image lens system 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 positive refractive power; a third lens element with positive refractive power; a fourth lens element with refractive power; a fifth lens element with positive refractive power made of plastic material, and having a convex object-side surface and a concave image-side surface, wherein at least one of the object-side surface and the image-side surface of the fifth lens element is aspheric; and a sixth lens element with refractive power made of plastic material, and having a concave image-side surface, wherein the image-side surface of the sixth lens element changes from concave at a paraxial region to convex at a peripheral region, and at least one of an object-side surface and the image-side surface of the sixth lens element is aspheric; wherein a focal length of the optical image lens system is f, a focal length of the first lens element is f1, a focal length of the second lens element is f2, and the following relationship is satisfied: 0<| f/f 1|+| f/f 2|<1.3.