Patent ID: 7167323

Claim:
A three-lens-element taking lens system for forming an image on a solid-state image sensor, comprising, from an object side: a first lens element formed of a uniform material and having a weak optical power; an aperture stop; a second lens element formed of a uniform material and having a positive optical power; and a third lens element formed of a uniform material, having a concave surface on an image side thereof and having a negative optical power, wherein the following conditions are fulfilled: | f/f 1|<0.6 −2.2< f/f 3<−0.79 0.05< T 6 /f< 0.5 where f represents a focal length of the taking lens system as a whole; f 1 represents a focal length of the first lens element; f 3 represents a focal length of the third lens element; and T 6 represents the axial lens thickness of the third lens element.