Patent ID: 7684128

Claim:
An optical lens system for taking image consisting of three lens elements, in order from the object side to the image side: a meniscus first lens element with positive refractive power having a convex object-side surface; an aperture stop; a meniscus plastic second lens element with negative refractive power having a convex image-side surface, an object-side surface and the image-side surface of the second lens element being both aspheric, an Abbe number of the second lens element being V2, and it satisfying the relation: V2>40; and a meniscus plastic third lens element with negative refractive power having a convex object-side surface, the object-side surface and an image-side surface of the third lens element being both aspheric, an Abbe number of the third lens element being V3, and it satisfying the relation: V3>40; wherein the focal length of the optical lens system for taking image is f, a focal length of the second lens element is f2, a focal length of the third lens element is f3, and they satisfy the relation: −0.5 <f/f 2<0; −0.5 <f/f 3<0.