Patent ID: 9025258
Filing Date: 2015-05-05
Classification: G02B,H04N

Abstract:
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 with positive refractive power; a second lens element having a second image-side surface facing toward said image side and said second image-side surface having a concave portion in a vicinity of a circular periphery of said second lens element; a third lens element with positive refractive power, having a convex third image-side surface facing toward said image side and a third object-side surface facing toward said object side, and said third object-side surface having a concave portion in a vicinity of a circular periphery of said third lens element; a fourth lens element having a concave fourth object-side surface facing toward said object side; and a plastic fifth lens element having a fifth image-side surface facing toward said image side and said fifth image-side surface having a concave portion in a vicinity of said optical axis, wherein said optical imaging lens set exclusively has five lens elements with refractive power, and a total thickness Ta1 of said first lens element, said second lens element, said third lens element, said fourth lens element and said fifth lens element along said optical axis, all four air gaps Gaa between each lens element from said first lens element to said fifth lens element along the optical axis, the thickness T 3 of said third lens element along said optical axis and the thickness T 5 of the fifth lens element along the optical axis satisfy the relation (Ta1+Gaa)/(T 3 +T 5 )≦4.00 and an air gap G 23 between said second lens element and said third lens element along said optical axis, an air gap G 34 between said third lens element and said fourth lens element along said optical axis, and an air gap G 45 between said fourth lens element and said fifth lens element along said optical axis satisfy a relationship 1.20≦(G 23 )/(G 34 +G 45 ).