Patent ID: 8792185
Filing Date: 2014-07-29
Classification: G02B

Abstract:
1. An image lens system comprising, in order from an object side to an image side: a first lens element with negative refractive power comprising a concave image-side surface; a second lens element with positive refractive power comprising a convex object-side surface; a third lens element with negative refractive power comprising an object-side surface and a concave image-side surface, the object-side surface and the image-side surface being aspheric; a fourth lens element with positive refractive power comprising a convex object-side surface and a convex image-side surface; and a fifth lens element with negative refractive power comprising a convex object-side surface and a concave image-side surface, the object-side surface and the image-side surface being aspheric, the fifth lens element having at least one inflection point; the image lens system satisfying the following condition: wherein R