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 len… ...

A thinner lens, of course, should let more light through, which is important when you are trying to shoot a beam a long distance. Fresnel’s lenses let through 98% of the lamp’s output, which ...

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 ...

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 ...

Brands like HTC and Oculus have been using Fresnel lenses for years now, but haven't found a way to counteract the light distortion that they produce. However, if Sony does pull off its new idea ...

History of Piedras Blancas lighthouse lens According to the Historical Marker Data Base, the First Order Fresnel lens was manufactured in 1850 in France by Henry LaPaute, while the clock mechanism ...

Both lights are able to maintain a Beam Angle between 15° and 60° with no colour fringing, meaning that the lights can be used flexibly in a range of creative contexts – from on-stage lighting to film ...

Like its counterpart lens, which still turns in the lighthouse but isn't often lit, the replica is more than 5½ feet tall, 7 feet in diameter and weighs 650 pounds. It has 252 prisms that shine ...