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. Though 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 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 first lens element has positive refracting power, and said object-side surface comprises a convex portion in a vicinity of the optical axis and a convex portion in a vicinity of a periphery of the first lens element; said second lens element has negative refracting power, said object-side surface of said second lens element comprises a convex portion in a vicinity of the optical axis; said third lens element is made of plastic; said object-side surface of said fourth lens element comprises a concave portion in a vicinity of the optical axis, said image-side surface of said fourth lens element comprises a convex portion in a vicinity of the optical axis; said object-side surface of said fifth lens element comprises a concave portion in a vicinity of the optical axis; and the optical imaging lens as a whole has only the five lens elements having refracting power.