Fresnel lens

Fresnel lens

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Credit: EUNICE HARRIS/SCIENCE PHOTO LIBRARY

Caption: Fresnel lens at Ponce Inlet Lighthouse, Daytona Beach, FL. Invented by French physicist Augustin-Jean Fresnel, the lens is much thinner than a conventional lens, which allows for a large aperture and short focal length at a lower weight.

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Keywords: fresnel, fresnel lens, guide, indicator, lens, light, lighthouse, lighthouse lens, navigation, navigational tool, optics, ponce inlet lighthouse

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