The Fresnel lens: An obsolete innovation finds a 21st-century role - Part 4

Part 3 looked at how Fresnel enhanced to the performance of his lens in the lighthouse application; this part looks at how the lens itself has been extended by new materials and manufacturing techniques and found modern applications even though lighthouses are obsolete. Fresnel’s legacy lives on, in unrelated ways There no argument: lighthouses are […] The post The Fresnel lens: An obsolete innovation finds a 21st-century role - Part 4 appeared first on Electrical Engineering News and Produc...