Patent ID: 8649112

Claim:
An image lens assembly 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; a second lens element with negative refractive power; a third lens element with refractive power made of plastic material, and having at least one of an object-side surface and an image-side surface being aspheric; a fourth lens element with refractive power made of plastic material, and having a concave object-side surface and a convex image-side surface, wherein at least one of the object-side surface and the image-side surface of the fourth lens element is aspheric; and a fifth lens element with positive refractive power made of plastic material, and having a convex object-side surface and a convex image-side surface, wherein at least one of the object-side surface and the image-side surface of the fifth lens element is aspheric; wherein a focal length of the image lens assembly is f, a focal length of the second lens element is f2, an axial distance between the object-side surface of the first lens element and an image plane is TTL, and a maximum image height of the image lens assembly is ImgH, the following relationships are satisfied: −1.4 <f/f 2<0; and TTL /ImgH<2.2.