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A variation on the Luneburg lens antenna is the hemispherical Luneburg lens antenna or Luneburg reflector antenna. This uses just one hemisphere of a Luneburg lens, with the cut surface of the sphere resting on a reflecting metal ground plane. The arrangement halves the weight of the lens, and the ground plane provides a convenient means of ...
This diagram was created with a text editor. ... Cross-section of the standard Luneburg lens; SVG code written in a text editor}} |Source=Transferred from ...
Luneburg lens - A spherical dielectric lens with a stepped or graded index of refraction increasing toward the center. [7] Luneburg lens antennas have several unique features: the focal point, and the feed antenna, is located at the surface of the lens, so it focuses all the radiation from the feed over a wide angle. It can be used with ...
A Luneburg lens is a ball lens that has a radially varying index of refraction that follows a certain profile. A Luneberg lens has foci outside the lens and can perfectly image a spherical object. Luneberg lenses designed for radio wavelengths are used in some radar systems and radio antennas.
List of lens designs; List of letters used in mathematics and science; List of light sources; List of loop quantum gravity researchers; List of materials properties; List of mathematical topics in quantum theory; List of mathematical topics in relativity; List of mesons; List of moments of inertia; List of neutrino experiments; List of noise topics
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Geometrical optics, or ray optics, is a model of optics that describes light propagation in terms of rays.The ray in geometrical optics is an abstraction useful for approximating the paths along which light propagates under certain circumstances.
1: Imaging by a lens with chromatic aberration. 2: A lens with less chromatic aberration. In optics, aberration is a property of optical systems, such as lenses and mirrors, that causes the image created by the optical system to not be a faithful reproduction of the object being observed.