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Hopetown Lighthouse

Inside the Lighthouse lens at Hopetown, Abaco, Bahamas.

Fresnel Magnifying Lens Close Up Lighthouse Glass Rotating by Chris Boswell, via Dreamstime

Looks to be a second- or third-order optic, though the lampchanger visible suggests it's the former. Pp: "Fresnel Magnifying Lens Close Up Lighthouse Glass Rotating by Chris Boswell, via Dreamstime"

Old lighthouse lens

Fresnel lens, a remarkable advance in casting a lighthouse beam through the century .

18% Lead Crystal 4th Order Fresnel Lens

18% Lead Crystal 4th Order Fresnel Lens

Top Of Lighthouse

Point Lookout Lighthouse

The Point Lookout Lighthouse is a location in Point Lookout.

Songvår Lighthouse, October splendor | Lighthouses of Norway- This is the view from inside the light of the old lighthouse. The lens renders everything upside down —a really strange effect.

Songvår Lighthouse, October splendor | Lighthouses of Norway- This is the view from inside the light of the old lighthouse. The lens renders everything upside down —a really strange effect.

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