Patent ID: 8786964

Claim:
A photographing lens assembly comprising, in order from an object side to an image side: a first lens element with positive refractive power having an object-side surface being convex at a paraxial region; a second lens element with negative refractive power having an object-side surface being concave at a paraxial region and an image-side surface being concave or planar at a paraxial region, wherein the second lens element is made of plastic material and the object-side surface and the image-side surface of the second lens element are aspheric; and a third lens element with negative refractive power having an object-side surface being concave at a paraxial region, and an image-side surface being concave at a paraxial region and being convex at a peripheral region, wherein the third lens element is made of plastic material, and the object-side surface and the image-side surface of the third lens element are aspheric; wherein the photographing lens assembly has a total of three lens elements with refractive power; a distance in parallel with an optical axis from a maximum effective diameter position on the image-side surface of the second lens element to an axial vertex on the image-side surface of the second lens element is SAG22, a central thickness of the second lens element is CT2, and the following relationship is satisfied: 0 <SAG 22/CT2<0.40.