Electromagnetic radiation focusing device and applications thereof

A focusing device for X-ray or Gamma-ray use in radiotherapy, the device comprising:

• a radiopaque frustoconical shaped member having a first end and a second end, wherein the radiopaque frustoconical shaped member comprises:
• a first layer positioned adjacent a second layer along a longitudinal axis of the radiopaque frustoconical shaped member, the first layer having a first array of apertures, and the second layer having a second array of apertures;
• the second layer positioned between the first layer and the second end;
• such that a pair of adjacent apertures from the second layer each partially overlaps with a respective aperture of the first layer;
• and
• an array of radiolucent beam paths extending from the first end, through the first layer and the second layer, to the second end, wherein each of the radiolucent beam paths has an entrance aperture at the first end, and an exit aperture at the second end, wherein source X-rays or gamma rays pass through the entrance aperture into the radiolucent beam path, and the radiolucent beam path emits an X-ray or gamma ray beam from the exit aperture when the source X-ray or gamma ray beams are in line with the longitudinal axis of the radiolucent beam path or have a predetermined angle of deviation from the longitudinal axis of the radiolucent beam paths;
• and
• wherein each of the longitudinal axis of the radiolucent beam paths is angled relative to the longitudinal axis of the radiopaque frustoconical shaped member for convergence towards a single focal point or multiple focal points, wherein the focal point or points are distal from the device and extends to a point beyond the second end.