Making a traditional glass lens requires a lot of experience, skill, and patience grinding a piece of glass to the required shape, and is not for the casual experimenter. Making a glass Fresnel ...

Yabe needed to find ways of improving the efficiency and output power of solar-pumped lasers, which are normally very low-power. Yabe's first innovation was to use a Fresnel lens to collect and ...

A large outdoor gantry with a big Fresnel lens that could etch a design onto a large piece of plywood would be a pretty boss beachside attraction. Of course, you’d need a simple solar tracker ...