Patent ID: 9638894
Date: 2017-05-02
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 having an image-side surface being concave in a paraxial region thereof; a third lens element with positive refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof; a fourth lens element with refractive power having an object-side surface being convex in a paraxial region thereof and an image-side surface being concave in a paraxial region thereof, wherein the object-side surface and the image-side surface of the fourth lens element are aspheric; and a fifth lens element with refractive power having an object-side surface being convex in a paraxial region thereof, and an image-side surface being concave in a paraxial region thereof and having at least one convex shape in an off-axial region thereof, wherein the object-side surface and the image-side surface of the fifth lens element are aspheric; wherein, the photographing optical lens assembly has a total of five lens elements with refractive power, there is an air gap in a paraxial region between any two of the first lens element, the second lens element, the third lens element, the fourth lens element, and the fifth lens element that are adjacent to each other, the refractive power of the third lens element is stronger than the refractive power of the fifth lens element, a curvature radius of the object-side surface of the first lens element is R