An Optical Device

A Fresnel lens is made up of multiple prisms

These prisms bend and magnify light rays, creating a single concentrated beam of light

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Augustin Fresnel, a French physicist developed the unique lens designed to produce parallel beams of light

The Fresnel lens was commonly used in lighthouses around the world

Notice the profile of the lens

A Fresnel lens used in a lighthouse

This lens takes on the appearance of a “beehive” and almost completely envelopes the light source

With a 1000 watt light bulb the concentrated beam produced from this lens can be seen in excess of 20 miles away