Patent ID: 8248713

Claim:
An optical photographing lens assembly comprising, in order from an object side to an image side: a first lens with negative refractive power having a concave image-side surface; a second lens with positive refractive power having a concave object-side surface and a convex image-side surface; a third lens with positive refractive power having a concave object-side surface and a convex image-side surface; a fourth lens with negative refractive power; and a fifth lens with positive refractive power; wherein a stop is disposed between the second and third lenses; wherein at least two of the third, fourth and fifth lenses are configured to each have at least one aspheric surface; and wherein a distance on the optical axis between the fourth and fifth lenses is T45, a focal length of the optical photographing lens assembly is f, the number of the lenses with refractive power is N, and they satisfy the relations: 0.10<(T45/f)*10<6.00, 5≦N≦6.