OPTICAL IMAGING LENS SET AND ELECTRONIC DEVICE COMPRISING THE SAME

摘要

An optical imaging lens set from an object side toward an image side along an optical axis in order includes: a first lens element having an image-side surface with a convex portion in a vicinity of its circular periphery, a second lens element having an object-side surface with a convex portion in a vicinity of its optical axis, a third lens element having an object-side surface with a concave portion in a vicinity of its optical axis, a fourth lens element with positive refractive power, and a plastic fifth lens element having an image-side surface with a concave portion in a vicinity of its optical axis.

主权项

1. An optical imaging lens set, from an object side toward an image side in order along an optical axis comprising:
an aperture stop; a first lens element having a first image-side surface facing toward said image side and said first image-side surface having a convex part in a vicinity of a circular periphery of said first lens element; a second lens element having a second object-side surface facing toward said object side and said second object-side surface having a convex part in a vicinity of said optical axis; a third lens element having a third object-side surface facing toward said object side and said third object-side surface having a concave part in a vicinity of said optical axis; a fourth lens element with positive refractive power; and a fifth lens element made of plastic, having a fifth image-side surface facing toward said image side and said fifth image-side surface having a concave part in a vicinity of said optical axis, and the optical imaging lens set as a whole having only the first, the second, the third, the fourth and the fifth lens element having refracting power,wherein an air gap has a thickness G12 between said first lens element and said second lens element along said optical axis, an air gap has a thickness G23 between said second lens element and said third lens element along said optical axis, an air gap has a thickness G34 between said third lens element and said fourth lens element along said optical axis, and an air gap has a thickness G45 between said fourth lens element and said fifth lens element along said optical axis, total four air gaps have a total thickness Gaa between said first lens element and said fifth lens element along said optical axis, said first lens element has a thickness T1 along said optical axis, said second lens element has a thickness T2 along said optical axis, said third lens element has a thickness T3 along said optical axis, said fourth lens element has a thickness T4 along said optical axis, said fifth lens element has a thickness T5 along said optical axis, and said first lens element, said second lens element, said third lens element, said fourth lens element and said fifth lens element together have a total thickness Tal along said optical axis.