Astera has a new light. The QuikPunch is a battery-powered LED PAR spot with a Fresnel lens designed for lighting professionals who need a fast, bright, and versatile light. Taking features found in ...

US Coast Guard helicopter returns Fresnel lens to Graves Light The Fresnel lens is a rare glass structure that lit the lighthouse from 1905 to 1975. Its return is nearly a decade in the making.

A 30-meter Fresnel telescope will provide visual confirmation of Earth-like planets up to 30 light years away. Since it can also observe a wide spectrum range including UV and IR, it can do follow ...