Fresnel lens
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English
[edit]![](http://upload.wikimedia.org/wikipedia/commons/thumb/e/e8/Fresnel_lens.svg/220px-Fresnel_lens.svg.png)
Etymology
[edit]Originally developed by French physicist Augustin-Jean Fresnel.
Noun
[edit]Fresnel lens (plural Fresnel lenses)
- The hollow cylindrical lens used in the Fresnel lantern.