Patent ID: 8976463
Filing Date: 2015-03-10
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 image-side surface of the first lens element has a concave portion in a vicinity of an optical axis; the object-side surface of the second lens element has a convex portion in a vicinity of an optical axis, and the image-side surface of the second lens element has a concave portion in a vicinity of a periphery; the object-side surface of the fourth lens element has a concave portion in a vicinity of the optical axis, and the image-side surface of the fourth lens element has a convex portion in a vicinity of the optical axis; the object-side surface of the fifth lens element has a convex portion in a vicinity of the optical axis, and the image-side surface of the fifth lens element has a concave portion in a vicinity of the optical axis; the optical imaging lens has only five lens elements having a refracting power; and the optical imaging lens satisfies the following relations: and wherein ALT is a sum of thicknesses of the first to fifth lens elements, AG34 is a width of an air gap between the third and fourth lens elements along the optical axis, AAG is a sum of widths of air gaps between the first to fifth lens elements, AG23 is a width of an air gap between the second and third lens elements along the optical axis, T5 is a thickness of the fifth lens element along the optical axis, and AG12 is a width of an air gap between the first and second lens elements along the optical axis.