Patent ID: 8767315

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; a sixth lens element with refractive power having an object-side surface and an image-side surface which are both aspheric; and a seventh lens element with refractive power having an object-side surface and an image-side surface which are both aspheric, wherein the image-side surface of the seventh lens element changes from concave at a paraxial region thereof to convex at a peripheral region thereof; wherein the optical image capturing system has a total of seven lens elements with refractive power, and an air distance between two adjacent surfaces of any two adjacent lens elements; the optical image capturing system further comprises an image sensor, a maximum image height of the optical image capturing system is ImgH, an axial distance between the object-side surface of the first lens element and an image plane is TTL, a focal length of the optical image capturing system is f, a vertical distance from a critical point on the image-side surface of the seventh lens element to an axial vertex on the image-side surface of the seventh lens element is Yc72, and an axial distance from the object-side surface of the first lens element to the image-side surface of the seventh lens element is Td, and the following relationships are satisfied: 0.1<Yc72 /f< 0.9; 0.50<Td/ f< 1.35; and 1.00<TTL/ImgH<1.70.