Patent ID: 8369027

Claim:
An image capturing optical 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 negative refractive power; a third lens element with negative refractive power having at least one of the object-side and image-side surfaces thereof being aspheric; a fourth lens element having at least one of the object-side and image-side surfaces thereof being aspheric; and a fifth lens element having a concave image-side surface, both the object-side and image-side surfaces thereof being aspheric, at least one inflection point is formed on at least one of the object-side and image-side surfaces thereof, and the fifth lens element is made of plastic; wherein a curvature radius of the object-side surface of the fourth lens element is R7, a curvature radius of the image-side surface of the fourth lens element is R8, a focal length of the second lens element is f2, a focal length of the third lens element is f3, a focal length of the image capturing optical lens system is f, and they satisfy the following relations: 4.0 <|R 7 /R 8|; 0.8 <f 2 /f 3<10.0; and −2.0 <f 3 /f<− 0.67.