Augustin-jean Fresnel 1788-1827
by David Parker
Title
Augustin-jean Fresnel 1788-1827
Artist
David Parker
Medium
Photograph - Photograph
Description
A Fresnel lens is a type of compact lens originally developed by French physicist Augustin-Jean Fresnel for lighthouses.The design allows the construction of lenses of large aperture and short focal length without the mass and volume of material that would be required by a lens of conventional design. A Fresnel lens can be made much thinner than a comparable conventional lens, in some cases taking the form of a flat sheet. A Fresnel lens can capture more oblique light from a light source, thus allowing the light from a lighthouse equipped with one to be visible over greater distances.
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July 27th, 2016
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