Patent ID: 8902507
Filing Date: 2014-12-02
Classification: G02B,H01Q

Abstract:
1. A man-made composite material, wherein the man-made composite material has a thickness and is divided into a plurality of regions; an electromagnetic wave is incident on a first surface of the man-made composite material and exits from a second surface of the man-made composite material opposite to the first surface; an i th region is one of the plurality of regions, and i is a positive integer and selected from a group consisted of 1, 2, 3, . . . , etc.; an intersection between the i each point on the curved surface to which the angle θ uniquely corresponds has a same refractive index; the curved surface to which the angle θ uniquely corresponds has a generatrix which extends along a direction of the thickness of the man-made composite material and between the bottom surface and the top surface of the i