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 having a fifth object-side surface facing toward said object side and said fifth object-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. |