Patent ID: 8351137

Claim:
A micro-lens module, comprising: a plurality of lens groups disposed between an object side and an image side, wherein at least one lens group in the lens groups is composed by a complex lens, the complex lens comprises a plurality of lenses adhered to each other, and a refractive index of at least one lens in the lenses is different from refractive indexes of the other lenses, wherein the lens groups comprise: a first lens group disposed between the object side and the image side, wherein the first lens group is composed by the complex lens, and the complex lens comprises: a first lens disposed between the object side and the image side; and a second lens disposed between the first lens and the image side, wherein a plane of the second lens serves as an aperture stop of the micro-lens module, wherein the lens groups further comprise a second lens group disposed between the first lens group and the image side, the second lens group has a negative refractive power, and the second lens group comprises a concave-convex lens, a convex surface of the concave-convex lens faces to the object side, and a concave surface of the concave-convex lens faces to the image side.