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 ...

Though still only in the prototype stage, this flat lens could one day be used on space telescopes, and perhaps even on ...

As intensive work continues to restore the Cape Hatteras Lighthouse, new issues have been uncovered near the top of the tower ...

Phakic IOL technologies have undergone substantial improvements in recent years, with progressive upgrades in design and material and more accurate sizing strategies.At the ESCRS winter meeting, Erik ...

Elation has announced the release of the KL Core IP, the newest addition to its KL 'Key Light' Series of LED luminaires.

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 ...