Patent ID: 9667847
Date: 2017-05-30
CPC Classifications: G02B

Claim:
1. A photographing optical 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 in a paraxial region thereof; a second lens element with negative refractive power; a third lens element having an object-side surface being concave in a paraxial region thereof, wherein the object-side surface and an image-side surface of the third lens element are aspheric; and a fourth lens element with negative refractive power having an object-side surface being concave in a paraxial region and an image-side surface being convex in a paraxial region thereof, wherein the object-side surface and the image-side surface of the fourth lens element are aspheric; wherein the photographing optical lens assembly further comprises a stop disposed between an imaged object and the second lens element, the photographing optical lens assembly has a total of four lens elements, an axial distance between the first lens element and the second lens element is T12, an axial distance between the second lens element and the third lens element is T23, an axial distance between the third lens element and the fourth lens element is T34, a focal length of the photographing optical lens assembly is f, a curvature radius of the object-side surface of the first lens element is R1, and the following condition is satisfied: