Workers install a Fresnel lens in the light room of the Montauk Lighthouse In Montauk New York.
Workers install a Fresnel lens in the light room of the Montauk Lighthouse In Montauk New York. The 3 ½ Order Fresnel lens was created in France in 1903 and has been retrofitted to the Montauk Lighthouse as part of a historical project. (Photo courtesy of the Montauk Historical Society)