If you are a Hackaday reader, you probably know what a Fresnel lens is. You find them in everything from overhead projectors to VR headsets. While it seems commonplace now, the Fresnel lens was an ...

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 ...

For centuries, telescopes have relied on curved lenses and mirrors to observe the Universe. A team of researchers has ...

His latest work, My Fingernails Are Fresnel Lenses, is a thoughtful poem about the make-up of memories and how they work through our system. “Most of my work comes from a scientific point of view.

For centuries, telescopes have relied on curved lenses and mirrors to capture images of the cosmos. While effective, these traditional optical elements are heavy and bulky. Large observatories and ...

For centuries, cameras and telescopes have relied on curved glass or plastic lenses to bend light and bring images into focus ...

For centuries, the optic lens has bent light through translucent, curved material, but now flat lenses are reimagining the ...

Fresnel lenses are all around us, but this vase puts the commonplace technology to work in an entirely new way. Borrowed From Old Lighthouses, A Method For Super-Powerful Solar Power With the help ...