Patent ID: 9557529
Date: 2017-01-31
CPC Classifications: G02B

Claim:
1. An optical imaging lens, sequentially from an object side to an image side along an optical axis, comprising first, second, third, fourth and fifth lens elements, each of said first, second, third, fourth and fifth lens elements having refracting power, 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 the optical axis; said image-side surface of said second lens element comprises a concave portion in a vicinity of a periphery of the second lens element; said image-side surface of said third lens element comprises a convex portion in a vicinity of the optical axis; said image-side surface of said fourth lens element comprises a concave portion in a vicinity of the optical axis; said image-side surface of said fifth lens element comprises a convex portion in a vicinity of the optical axis; an abbe number of the first lens element is V1, an abbe number of the third lens element is V3, and V1 and V3 satisfy the equation: a central thickness of the third lens element along the optical axis is T3, a central thickness of the fifth lens element along the optical axis is T5, and T3 and T5 satisfy the equation: