Patent ID: 7710666

Claim:
An imaging lens module, comprising a fixed aperture stop and an optical module, and the optical module comprising first, second, third and fourth lenses arranged from an object to an image in a sequence of: the first lens, having a meniscus lens with positive refractive power and a concave surface disposed towards the image, and at least one surface thereof being an aspheric surface; the fixed aperture stop; the second lens, having a meniscus lens with negative refractive power and a concave surface disposed towards the image, and at least one surface thereof being an aspheric surface; the third lens, having a meniscus lens with positive refractive power and a convex surface disposed towards the image, and at least one surface thereof being an aspheric surface; and the fourth lens, having a concave surface disposed towards the object, and at least one surface thereof being an aspheric surface.