Patent ID: 6313802
Filing Date: 2001-11-06
Classification: H01Q

Abstract:
A waveguide lens for electromagnetic radiation and having an axis, the waveguide lens refracting electromagnetic radiation passing through the waveguide lens from a first side of the waveguide lens to a second side of the waveguide lens opposite the first side, so that the waveguide lens focuses an electromagnetic wave incoming to the first side to a focus located on the second side or produces a substantially plane wave issued at the first side from a substantially spherical electromagnetic wave transmitted from a source located at the focus on the second side, the waveguide lens comprisingat least two rings of a material interacting with the electromagnetic radiation,the at least two rings having a substantially rotationally symmetric shape in relation to the axis, each ring extending substantially in a direction of the axis and being separate from each other, arranged with a radial interspace as taken in a direction outwards from the axis,the at least two rings being arranged to form waveguiding channels performing the refracting of the waveguide lens.