Patent ID: 8810925
Filing Date: 2014-08-19
Classification: G02B,H04N

Abstract:
1. An optical imaging lens comprising, from an object side to an image side, an aperture stop, a first lens element, a second lens element, a third lens element, a fourth lens element, and a fifth lens element, each of the first, second, third, fourth and fifth lens element having an object-side surface facing toward the object side and an image-side surface facing toward the image side, wherein: the first lens element has a positive refracting power, and the object-side surface of the first lens element has a convex portion in a vicinity of an optical axis and a convex portion near a circumference of the first lens element; the second lens element has a negative refracting power; the third lens element has a negative refracting power, and the object-side surface of the third lens element has a concave portion near a circumference of the third lens element; the fourth lens element has a positive refracting power, the object-side surface of the fourth lens element has a concave portion in a vicinity of the optical axis and a concave portion near a circumference of the fourth lens element, and the image-side surface of the fourth lens element has a convex portion in a vicinity of the optical axis and a convex portion near the circumference of the fourth lens element; the image-side surface of the fifth lens element has a concave portion in a vicinity of the optical axis and a convex portion near a circumference of the fifth lens element; the optical imaging lens has only five lens elements having a refracting power; and the optical imaging lens satisfies the following relations: wherein T3 is a thickness of the third lens element along the optical axis, T5 is a thickness of the fifth lens element along the optical axis, T2 is a thickness of the second lens element along the optical axis, and AG23 is a width of an air gap between the second and third lens elements along the optical axis.