Patent ID: 9366845
Filing Date: 2016-06-14
CPC Classification: G02B

Claim Text:
1. A photographing optical lens assembly comprising, in order from an object side to an image side: a first lens element having positive refractive power; a second lens element having negative refractive power; a third lens element; a fourth lens element having positive refractive power; a fifth lens element with negative refractive power having an object-side surface being concave in a paraxial region thereof and an image-side surface being convex in a paraxial region thereof; a sixth lens element having an image-side surface being concave in a paraxial region thereof, wherein both of an object-side surface and the image-side surface of the sixth lens element are aspheric, and the image-side surface of the sixth lens element has at least one inflection point; and a seventh lens element having an image-side surface being concave in a paraxial region thereof, wherein both of an object-side surface and the image-side surface of the seventh lens element are aspheric, and the image-side surface of the seventh lens element has at least one inflection point; wherein the photographing optical lens assembly has a total of seven lens elements, there is a non-axial critical point on the image-side surface of the sixth lens element at which a tangent to the image-side surface of the sixth lens element is perpendicular to an optical axis, there is a non-axial critical point on the image-side surface of the seventh lens element at which a tangent to the image-side surface of the seventh lens element is perpendicular to the optical axis, a vertical distance between the non-axial critical point on the image-side surface of the sixth lens element and the optical axis is Yc62, a vertical distance between the non-axial critical point on the image-side surface of the seventh lens element and the optical axis is Yc72, a focal length of the photographing optical lens assembly is f, a focal length of the first lens element is f1, a focal length of the seventh lens element is f7, and the following conditions are satisfied: