Patent ID: 8531780
Filing Date: 2013-09-10
Classification: G02B

Abstract:
1. 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