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Fresnel lenses are composed of a series of concentric grooves etched into one side of a sheet of plastic. Fresnel lenses are unlike typical spherical or aspherical optical lenses. The grooves of Fresnel Lenses act as individual refracting surfaces, making these lenses ideal for solar concentration, solar cell heat collection, overhead projection, and non-imaging light focusing applications. Monica Rainey, Optical Engineer, explains the advantages, disadvantages, and applications of these unique lenses. To learn more, read our Advantages of Fresnel Lenses application note.

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