Patent ID: 9235033
Filing Date: 2016-01-12
CPC Classification: G02B,H04N

Claim Text:
1. An image lens assembly system comprising, in order from an object side to an image side: a first lens element having refractive power; a second lens element having positive refractive power; a third lens element having refractive power; a fourth lens element having refractive power; a fifth lens element having refractive power; a sixth lens element with refractive power made of plastic material, wherein at least one of an object-side surface and an image-side surface of the sixth lens element is aspheric; and a seventh lens element with refractive power made of plastic material and having a concave image-side surface, wherein the image-side surface of the seventh lens element changes from concave in a paraxial region thereof to convex in a peripheral region thereof, and at least one of an object-side surface and the image-side surface thereof is aspheric; wherein the image lens assembly system has a total of seven lens elements with refractive power, there is an air gap between two adjacent surfaces of any two adjacent lens elements of the first lens element, the second lens element, the third lens element, the fourth lens element, the fifth lens element, the sixth lens element and the seventh lens element, a focal length of the image lens assembly system is f, a composite focal length of the first lens element and the second lens element is f12, and the following relationship is satisfied: