Patent ID: 8189276

Claim:
A photographing optical lens assembly, sequentially arranged from an object side to an image side, comprising: a first lens element with negative refractive power, having a convex object-side surface and a concave image-side surface; a second lens element with positive refractive power, having a convex object-side surface and a convex image-side surface; and a third lens element with positive refractive power, having a convex object-side surface, at least one of the object-side surface and an image-side surface thereof being aspheric and having at least one inflection point; and the photographing optical lens assembly further comprising a stop; wherein R 1 is a curvature radius of the object-side surface of the first lens element, R 3 is a curvature radius of the object-side surface of the second lens element, R 4 is a curvature radius of the image-side surface of the second lens element, SL is an axial distance between the stop and the image plane of the photographing optical lens assembly, TTL is an axial distance between the object-side surface of the first lens element and the image plane, f is a focal length of the photographing optical lens assembly, f 2 is a focal length of the second lens element, f 3 is a focal length of the third lens element, and the following conditions are satisfied: −1.8 <R 4 /f 2 <−0.3; 0.0 <R 1 /R 3 <0.9; 0.75 <SL/TTL< 1.1; 0.45 <f/f 3 <1.2.