Patent ID: 9274310
Filing Date: 2016-03-01
CPC Classification: G02B

Claim Text:
1. An optical imaging lens comprising an aperture stop and an optical assembly, the optical assembly comprising: in order from an object side to an image side: a first lens element with a positive refractive power having an aspheric object-side surface being convex near an optical axis and an aspheric image-side surface; a second lens element with a positive refractive power having an aspheric object-side surface being concave near an optical axis and an aspheric image-side surface being convex near an optical axis, the second lens element being made of plastic material; a third lens element with a negative refractive power having an aspheric object-side surface being convex near an optical axis and an aspheric image-side surface being concave near an optical axis, the third lens element being made of plastic material, at least one inflection point being formed on the object-side and the image-side surfaces of the third lens element; the aperture stop being located between the image-side surface of the first lens element and an object to be photographed; wherein a radius of curvature of the object-side surface of the first lens element is R1, a radius of curvature of the image-side surface of the first lens element is R2, a central thickness of the second lens element is CT2, a central thickness of the third lens element is CT3, and the following conditions are satisfied: