Patent ID: 9052493
Filing Date: 2015-06-09
Classification: G02B,H04N

Abstract:
1. An optical imaging lens, sequentially from an object side to an image side, comprising first, second, third, fourth and fifth lens elements, each of said first, second, third, fourth and fifth lens elements having an object-side surface facing toward the object side and an image-side surface facing toward the image side, wherein: said object-side surface of said first lens element comprises a convex portion in a vicinity of an optical axis; said image-side surface of said second lens element comprises a concave portion in a vicinity of its periphery; said object-side surface of said third lens element comprises a concave portion in a vicinity of its periphery; said fourth lens element has positive refractive power; said image-side surface of said fifth lens element comprises a convex portion in a vicinity of its periphery; the optical imaging lens as a whole has only the five lens elements having refractive power; and a sum of thicknesses of all five lens elements along the optical axis is ALT, a sum of all four air gaps from the first lens element to the fifth lens element along the optical axis is G