Fresnel lens
Fres·nel lens
noun \ˈfrez-nəl-, frā-ˈnel-\Definition of FRESNEL LENS
: a lens that has a surface consisting of a concentric series of simple lens sections so that a thin lens with a short focal length and large diameter is possible and that is used especially for spotlights
Origin of FRESNEL LENS
Augustin J. Fresnel
First Known Use: 1865
Rhymes with FRESNEL LENS
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