Patent ID: 9507124
Filing Date: 2016-11-29
CPC Classification: G02B,H04N

Claim Text:
1. An optical photographing lens assembly comprising, in order from an object side to an image side: a first lens element with negative refractive power having an image-side surface being concave in a paraxial region thereof; a second lens element with positive refractive power having an image-side surface being convex in a paraxial region thereof; a third lens element with positive refractive power having an image-side surface being convex in a paraxial region thereof, both of an object-side surface and the image-side surface of the third lens element being aspheric; and a fourth lens element having negative refractive power, both of an object-side surface and an image-side surface of the fourth lens element being aspheric; wherein the optical photographing lens assembly has a total of four lens elements with refractive power, the first through the fourth lens elements are non-cemented, the optical photographing lens assembly further comprises an aperture stop which is located between the first lens element and the second lens element, at least one of the third lens element and the fourth lens element of the optical photographing lens assembly has at least one inflection point, an axial distance between the first lens element and the second lens element is T