Patent ID: 8325429

Claim:
A photographing optical lens assembly comprising, in order from an object side to an image side: a first lens element with positive refractive power; a second lens element with negative refractive power having a convex object-side surface and a concave image-side surface; a third lens element having a concave image-side surface, wherein at least one of an object-side surface and the concave image-side surface of the third lens element is aspheric; a fourth lens element with positive refractive power having a convex image-side surface, wherein at least one of an object-side surface and the convex image-side surface of the fourth lens element is aspheric; and a fifth lens element with negative refractive power having a concave image-side surface, wherein at least one of an object-side surface and the concave image-side surface of the fifth lens element is aspheric; wherein a focal length of the fourth lens element is f 4 , a focal length of the photographing optical lens assembly is f, a curvature radius of the object-side surface of the second lens element is R 3 , a curvature radius of the image-side surface of the third lens element is R 6 , a curvature radius of the object-side surface of the fourth lens element is R 7 , and they satisfy the following relationships: 0.3 <f 4 /f< 0.8; 0.3 <f/R 3<2.0; and 0.0 <f /( R 6 −R 7)<0.5.