Patent ID: 7957075

Claim:
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: an aperture stop; a first plastic lens element with positive refractive power having an aspheric convex object-side surface and an aspheric concave image-side surface; a second plastic lens element with negative refractive power having an aspheric concave object-side surface and an aspheric convex image-side surface; and a third plastic lens element with positive refractive power having an aspheric convex object-side surface and an aspheric convex image-side surface; an Abbe number of the second lens element is V 2 , and it satisfies the relation: V2<32; a center thickness of the second lens element is CT 2 , a focal length of the optical lens system for taking image is f, and they satisfy the relations: CT2<0.4 mm; CT 2/ f <0.25.