Patent ID: 9696519
Date: 2017-07-04
CPC Classifications: G02B

Claim:
1. An imaging optical lens assembly, comprising, in order from an object side to an image side: a first lens element with negative refractive power having an object-side surface being concave in a paraxial region thereof; a second lens element having positive refractive power; a third lens element having negative refractive power; a fourth lens element having positive refractive power; and a fifth lens element with negative refractive power having an image-side surface being concave in a paraxial region thereof, and at least one convex shape in an off-axial region on the image-side surface; wherein the imaging optical lens assembly has a total of five lens elements; and wherein a curvature radius of the object-side surface of the first lens element is R1, a curvature radius of an object-side surface of the second lens element is R3, a curvature radius of an image-side surface of the second lens element is R4, a focal length of the imaging optical lens assembly is f, a focal length of the third lens element is f3, a focal length of the fifth lens element is f5, and the following conditions are satisfied: