Patent ID: 8654458

Claim:
A wide-angle imaging lens assembly comprising, in order from an object-side to an image-side: a first lens element with negative refractive power having a convex object-side surface and a concave image-side surface; a second lens element with negative refractive power having a convex object-side surface and a concave image-side surface; a third lens element with positive refractive power; a fourth lens element with negative refractive power having a concave image-side surface; and a fifth lens element with positive refractive power; wherein the number of lens elements with refractive power is five; wherein the wide-angle imaging lens assembly is further provided with an electronic sensor for image formation of an object; and wherein a focal length of the first lens element is f 1 , a focal length of the second lens element is f 2 , a distance on an optical axis between the second lens element and the third lens element is T 23 , a distance on the optical axis between the first lens element and the second lens element is T 12 , a radius of curvature of the image-side surface of the fourth lens element is R 8 , a radius of curvature of an object-side surface of the fourth lens element is R 7 , a focal length of the wide-angle imaging lens assembly is f, half of a diagonal length of an effective pixel area of the electronic sensor is ImgH, and they satisfy the relations: 0<f 1 /f 2 <2.00, 0.15<T 23 /T 12 <0.69, −1.40<R 8 /R 7 <0.70, 0.40<f/ImgH<1.10.