Imaging Lens, and Electronic Apparatus Including the Same

摘要

An imaging lens includes first to fifth lens elements arranged from an object side to an image side in the given order. The first lens element has a positive refractive power and a convex object-side surface. The second lens element has a negative refractive power and an image-side surface with a concave peripheral portion. The third lens element has an object-side surface with a concave peripheral portion. The fourth lens element has an image-side surface with a concave portion in a vicinity of an optical axis. The fifth lens element has an image-side surface with a concave portion in the vicinity of the optical axis and a convex peripheral portion.

主权项

1. An imaging lens comprising an aperture stop and first, second, third, fourth and fifth lens elements arranged from an object side to an image side in the given order along an optical axis of said imaging lens, 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 a positive refractive power, said object-side surface of said first lens element being a convex surface; said second lens element has a negative refractive power, said image-side surface of said second lens element having a concave portion in a vicinity of a periphery of said second lens element; said object-side surface of said third lens element has a concave portion in a vicinity of a periphery of said third lens element; said image-side surface of said fourth lens element has a concave portion in a vicinity of the optical axis; and said image-side surface of said fifth lens element has 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; wherein said imaging lens does not include any lens element with refractive power other than said first, second, third, fourth and fifth lens elements.