Compared to the bulky and heavy ordinary lens the Fresnel zone (FZ) plate has the advantage of being thin, light and easy to manufacture. The ordinary lens, however, has a broadband and effective focusing. For a better FZ lens efficiency the next techniques are employed: subzone phase-correcting, curved (3D) zone surface or both put together. Here the second technique is illustrated in a Conical Fresnel Zone (CFZ) lens of Metal rings (Soret-type CFZM.υ.α lens), and both techniques are applied in a CFZ lens of Dielectric rings (Wood-type CFZD.υ.α lens) rings, where υ is the number of rings and α is the cone half-opening angle. © 2013 IEEE.