Cylindrical electromagnetic wave lens

The utility model relates to a cylindrical electromagnetic wave lens, which comprises a shell and a plurality of components, the cylindrical part of the shell and the two surface covers are combined to form a cavity; the multiple components are all installed in the cavity, and the central axis of the appearance of each component is parallel to the central axis of the appearance of the cylindrical part. A plurality of components are arranged in a layer-by-layer surrounding mode, dielectric layers are arranged in the innermost component, between every two adjacent components and between the outermost component and the cylindrical piece, the dielectric layers are arranged in a layer-by-layer surrounding mode to form a lens body, and dielectric constants of the dielectric layers in the lens body are sequentially reduced from inside to outside. Each dielectric layer is formed by a plurality of dielectric particles which are restrained by a certain pre-tightening force instead of being bonded by an adhesive, and th