Patent ID: 7446954

Claim:
A hybrid lens system comprising: a first lens with positive refractive power, the first lens being made from a glass material and having a convex first surface and a convex second surface; a second lens with negative refractive power, the second lens being made from a plastic material; a third lens with positive refractive power, the third lens being made from a plastic material; and a fourth lens with negative refractive power, the fourth lens being made from a plastic material; wherein the first lens, the second lens, the third lens and the fourth lens are aligned in that order from an object side to an image side, each of the four lenses is an aspheric lens, the second lens has a concave third surface facing the object side and a convex fourth surface, the third lens has a convex fifth surface and a convex sixth surface, the fourth lens has a concave seventh surface and a concave eighth surface, the first surface, the second surface, the third surface, the fourth surface, the fifth surface, the sixth surface, the seventh surface and the eighth surface are aligned in that order from the object side to the image side, and each of said surfaces is aspheric.