Luneburg lens

$Cross-section of the standard Luneburg lens, with blue shading proportional to the refractive index$

$Cross-section of Maxwell's fish-eye lens, with blue shading representing increasing refractive index$

A Luneburg lens (originally Lüneburg lens, often incorrectly spelled Luneberg lens) is a spherically symmetric gradient-index lens. A typical Luneburg lens's refractive index n decreases radially from the center to the outer surface. They can be made for use with electromagnetic radiation from visible light to radio waves.

单词	Lens Antenna
释义	Lens Antenna 英语百科 Luneburg lens $Cross-section of the standard Luneburg lens, with blue shading proportional to the refractive index$ $Cross-section of Maxwell's fish-eye lens, with blue shading representing increasing refractive index$ A Luneburg lens (originally Lüneburg lens, often incorrectly spelled Luneberg lens) is a spherically symmetric gradient-index lens. A typical Luneburg lens's refractive index n decreases radially from the center to the outer surface. They can be made for use with electromagnetic radiation from visible light to radio waves.
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Lens Antenna

Luneburg lens