Patent ID: 8599495

Claim:
An optical image capturing system comprising, in order from an object side to an image side thereof: a first lens element with positive refractive power having a convex object-side surface; a second lens element with refractive power; a third lens element with refractive power; a fourth lens element with refractive power; a fifth lens element with refractive power having a convex image-side surface; a sixth lens element with positive refractive power having an object-side surface and an image-side surface which are both aspheric; and a seventh lens element with negative refractive power having a concave image-side surface, herein the image-side surface of the seventh lens element changes from concave at a paraxial region to convex at a peripheral region, and an object-side surface and the image-side surface of the seventh lens element are both aspheric, wherein, when a curvature radius of the object-side surface of the seventh lens element is R13, a curvature radios of the image-side surface of the seventh lens element is R14, a focal length of the optical image capturing system is f, a focal length of the sixth lens element is f6, and a focal length of the seventh lens element is f7, the following relationships are satisfied: −5.0 <R 14 /R 13<1.0; and 1.8 <|f/f 6 |+|f/f 7|<6.0.