Patent ID: 8203797

Claim:
A photographing optical lens assembly comprising, in order from an object side to an image side: a first lens element with negative refractive power having 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 negative refractive power having a concave image-side surface, the object-side and image-side surfaces thereof being aspheric; wherein the photographing optical lens assembly further comprises an aperture stop, disposed between the first lens element and the second lens element, and an electronic sensor, disposed at the image plane for image formation, and there are only three lens elements with refractive power in the photographing optical lens assembly; wherein an Abbe number of the second lens element is V2, an Abbe number of the third lens element is V3, a radius of curvature on the object-side surface of the second lens element is R3, a radius of curvature on the image-side surface of the second lens element is R4, a distance on the optical axis between the image-side surface of the third lens element and the electronic sensor is Bf, a distance on the optical axis between the object-side surface of the first lens element and the electronic sensor is TTL, a radius of curvature of the object-side surface of the first lens element is R1, a radius of curvature of the image-side surface of the first lens element is R2, and they satisfy the relations: 25.0 <V 2− V 3<45.0; −3.5 <R 3/ R 4<−0.5; 0.1 <Bf/TTL< 0.5; 0.0 <R 2/ R 1<0.3.