In this work, a top-cut hexagonal prism is designed. The six sides of the prism are divided into two equal groups, in which the angles between the side and the bottom of the prism are different. When an expanded plane wave is refracted by the six sides of the prism, the interference pattern can be formed, which is corresponding to a two-period superlattice structure of gradient photonic crystal (GPC). If the interfered pattern is recorded by a photosensitive medium, a GPC lens array is obtained. By adjusting the angle between the side and bottom of the prism and the amplitude contrast of both groups of beams, we can design lenses and arrays with different array periods, gradients, and refractive index differences between the center and edge of each lens. This work provides new applications for gradient lenses in optical interconnection, optical integration, optical coupling, display, and imaging.