GRAVES LEDGE, BOSTON HARBOR — Dave Waller and Bobby Sager are used to taking on daunting projects. A decade ago, they bid against each other at the government auction for Graves Light, a historic ...

The Office of Naval Research funded the development of a simple array of six lights outfitted with Fresnel lenses mounted on the stern of a ship, called a Tactical Vectoring Equipment (TVE) display.

GRAND MARAIS, MI – The iconic Fresnel lens is finally visible at this lighthouse in Michigan’s Upper Peninsula, officials announced. After years behind curtains, the 3rd order Fresnel lens atop the Au ...

A lens manufactured in France in 1902 is shining high atop Montauk Point Lighthouse once again. Earlier this month the U.S. Coast Guard relit the clamshell-shaped Fresnel lens, which guided mariners ...

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 ...

Wood carvers will sometimes use chainsaws to “rough in,” but finishing requires more subtle sculpting tools. In lighting, as with other crafts, no single tool is perfect for everything. Coarse or ...

IIIF provides researchers rich metadata and media viewing options for comparison of works across cultural heritage collections. Visit the IIIF page to learn more. In the early nineteenth century, ...

SALEM — Essex Heritage National Heritage Commission has launched a campaign to fund a public display of the lens of the Bakers Island Light Station, which guided mariners safely into ...

The history of optics began long before Christ in the regions where ancient Egyptians and Mesopotamians used to live. The Indian subcontinent, the Greek people, and the Islamic world should be ...

Nearly two years ago, Wearality created a unique Fresnel lens for VR headsets offering a claimed 150 degree field of view. The company successfully funded a VR viewer featuring the lens called ...