Mobile device and optical imaging lens thereof

摘要

The present invention provides a mobile device and an optical imaging lens thereof. The optical imaging lens comprises six lens elements positioned in an order from an object side to an image side along an optical axis. Through controlling the convex or concave shape of the surfaces and/or the refracting power of the lens elements, the optical imaging lens shows better optical characteristics and the total length of the optical imaging lens is shortened.

主权项

1. An optical imaging lens, sequentially from an object side to an image side, comprising first, second, third, fourth, fifth, and sixth lens elements, each of said 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; said image-side surface of said second lens element comprises a concave portion in a vicinity of a periphery of said second lens element; said image-side surface of said third lens element comprises a convex portion in a vicinity of a periphery of said third lens element; said image-side surface of said fourth lens element comprises a convex 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 a periphery of said fifth lens element; 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 said sixth lens element; said optical imaging lens as a whole having only the six lens elements having refractive power, wherein a central thickness of said third lens element along the optical Axis is CT3; wherein an air gap between said second lens element and said third lens element is AC23, an air gap between said third lens element and said fourth lens element is AC34; and wherein CT3, AC23, and AC34 satisfy the equation:2.30≤AC⁢⁢23+CT⁢⁢3+AC⁢⁢34CT⁢⁢3.