Patent ID: 8422151

Claim:
A wide-angle imaging lens module, comprising a fixed aperture diaphragm, a first lens, a second lens, a third lens and a fourth lens arranged from an object side to an image side in a sequence of: the first lens, having a positive refractive power, a convex surface on the object side, and having at least one aspheric surface; the fixed aperture diaphragm; the second lens, having a positive refractive power, a concave surface on the object side, and having at least one aspheric surface; the third lens, having a positive refractive power, a concave surface on the object side, and having at least one aspheric surface; the fourth lens, having a negative refractive power, a convex surface on the object side near the optic axis, and having at least one aspheric surface; wherein 3.0<|f1|/|f2|<8.0, and f1 is a focal length value of the first lens, f2 is a focal length value of the second lens.