Patent ID: 8531780

Claim:
An optical imaging lens assembly, in order from an object side to an image side, comprising: 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 positive refractive power; a third lens element with negative refractive power having a concave image-side surface and at least one of an object-side surface and the image-side surface of the third lens element being aspheric; a fourth lens element with positive refractive power having a convex image-side surface and at least one of an object-side surface and the image-side surface of the fourth lens element being aspheric; and a stop being disposed between the first lens element and the third lens element; wherein the second lens element has a convex object-side surface, and the third lens element and the fourth lens element are made of plastic; and wherein a central thickness of the first lens element is CT 1 , a central thickness of the fourth lens element is CT 4 , a curvature radius of the object-side surface of the third lens element is R 5 , a curvature radius of the image-side surface of the third lens element is R 6 , an axial distance between the stop and an image plane is SL, an axial distance from the object-side surface of the first lens element to the image plane is TTL, and they satisfy the following relations: 0.3 <CT 4 /CT 1<1.5; −1.5< R 6/ R 5<1.5; 0.40< SL/TTL< 0.75.