Patent ID: 9429737
Filing Date: 2016-08-30
CPC Classification: G02B

Claim Text:
1. An optical image lens system comprising, in order from an object side to an image side: a first lens element with positive refractive power having a convex object-side surface and a concave image-side surface; a second lens element having positive refractive power; a third lens element having positive refractive power; a fourth lens element having negative refractive power; a fifth lens element with positive refractive power made of plastic, and having a convex object-side surface and a concave image-side surface, wherein the object-side surface and the image-side surface of the fifth lens element are aspheric; and a sixth lens element with negative refractive power made of plastic, and having a concave image-side surface, wherein the image-side surface of the sixth lens element changes from concave at a paraxial region to convex at a peripheral region, and an object-side surface and the image-side surface of the sixth lens element are aspheric; wherein the optical image lens system has a total of six lens elements with refractive power, a maximal field of view of the optical image lens system is FOV, and the following relationship is satisfied: