An optical lens system for taking image consisting of three lens elements with refractive power, 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, and the object-side surface and the image-side surface of the second lens element being both aspheric, the Abbe number of the second lens element being V2, and it satisfying the relation: V2>40; a meniscus plastic third lens element with negative refractive power having a convex object-side surface, the object-side surface and the 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.