An Optical Device. How it Works  A Fresnel lens is made up of multiple prisms  These prisms bend and magnify light rays, creating a single concentrated.

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Presentation transcript:

An Optical Device

How it Works  A Fresnel lens is made up of multiple prisms  These prisms bend and magnify light rays, creating a single concentrated beam of light Refer to the following website for more information

The Inventor  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

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