Patent ID: 9557525
Date: 2017-01-31
CPC Classifications: G02B,H04N

Claim:
1. An optical imaging lens, sequentially from an object side to an image side along an optical axis, comprising an aperture stop, first, second, third, fourth, fifth and sixth lens elements, each of said first, second, third, fourth, fifth and sixth 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 the optical axis, and said image-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 convex portion in a vicinity of a periphery of the second lens element; said third lens element has negative refracting power, and said image-side surface thereof comprises a concave portion in a vicinity of a periphery of the third lens element; said fourth lens element has positive refracting power, said object-side surface of said fourth lens element comprises a concave portion in a vicinity of the optical axis, and said image-side surface of said fourth lens element comprises a convex portion in a vicinity of the optical axis; and said image-side surface of said sixth lens element comprises a concave portion in a vicinity of the optical axis and a convex portion in a vicinity of a periphery of the sixth lens element, and said object-side surface of said sixth lens element comprises a concave portion in a vicinity of the optical axis; the optical imaging lens as a whole comprises only the six lens elements having refracting power.