MOBILE DEVICE AND OPTICAL IMAGING LENS THEREOF

摘要

Present embodiments provide for a mobile device and an optical imaging lens thereof. The optical imaging lens comprises five lens elements positioned sequentially from an object side to an image side. 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 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 second lens element has positive refracting power, and said image-side surface thereof comprises a convex 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 object-side surface of said fourth lens element comprises a concave portion in a vicinity of a periphery of the fourth lens element, and said image-side surface of said fourth lens element is a convex surface; and said fifth lens element is constructed by plastic material, and the optical imaging lens as a whole comprises only the five lens elements having refracting power.