Patent ID: 8953255
Filing Date: 2015-02-10
Classification: G02B,H04N

Abstract:
1. An imaging lens comprising an aperture stop, first, second, third, fourth, and fifth lens elements arranged from an object side to an image side in the given order, wherein: said first lens element has a positive refractive power; said second lens element has a negative refractive power; said third lens element has a negative refractive power, and has an image-side surface that faces toward the image side and that has a first convex portion in a vicinity of a periphery of said third lens element; said fourth lens element has an object-side surface facing toward the object side, said object-side surface of said fourth lens element being a concave surface; said fifth lens element has an object-side surface and an image-side surface that face toward the object side and the image side, respectively, said object-side surface of said fifth lens element having a first convex portion in a vicinity of an optical axis of said imaging lens, said image-side surface of said fifth lens element having a concave portion in a vicinity of the optical axis and a convex portion in a vicinity of a periphery of said fifth lens element; said imaging lens does not include any lens element with refractive power other than said first, second, third, fourth, and fifth lens elements; and said second lens element further has an image-side surface facing toward the image side, and said imaging lens satisfies 0.28<T “T “G