You may know them best for their original use in lighthouses, where they're famously recognised as "the invention that saved a million ships". Or perhaps you initially think of their employment in ...

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The unique history of the Crooked River Lighthouse’s lens in Carrabelle, Florida. The Crooked River Lighthouse’s Executive Director, Steve Allen, shares with us the unique qualities of the Fresnel ...

Fresnel lenses consist of interspaced, concentric steps which correspond to the surface of a conventional lens. This equates to a lens with a common focal length, equivalent to a simple lens, but at ...

The new Astera QuikPunch essentially takes everything that made the QuikSpot a success and scales it up. Taking cues from the popular 3” lens QuikSpot but scaling up in size, lux output, and beam ...

Apple's AR headset or "Apple Glass" device may use a movable display to compensate for motion blur, while fresnel lenses could help keep the weight of the headset down for users. Apple is long-rumored ...