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Lens lantern

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Title: Lens lantern  
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Subject: Lighthouse, Integral lighthouse, International Lighthouse and Lightship Weekend, Skeletal tower, Aerobeacon
Collection: Lighthouse Fixtures
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Lens lantern

A lens lantern is a small, self-contained lamp structure which may sometimes be used to serve as a lighthouse. Unlike a regular Fresnel lens, the lantern requires no housing to protect it from the weather; its glass sides would refract and magnify the light in the same fashion as would the lens. Lens lanterns were popular alternatives to lighthouses in the nineteenth century; they required less care, were cheaper to erect, and could be fairly easily placed.

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