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单词 Luneburg lens
释义

Luneburg lens

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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