Fresnel lens
Date: 1960-1980
Inventory Number: 2004-1-0226
Classification: Lens
Subject:
Maker: American
Owner: Edwin H. Land (1909 - 1991)
Cultural Region:
City of Use:
Dimensions:
62 × 49 × 0.7 cm (24 7/16 × 19 5/16 × 1/4 in.)
blue board box: 9.5 × 79.7 × 61.6 cm (3 3/4 × 31 3/8 × 24 1/4 in.)
Description:
Fresnel lens in taped paper mat frame.
In Collection(s)
Signedunsigned
FunctionOriginally developed and used in lighthouses, the Fresnel lens are used to amplify the amount of light projected. Because of their special design, they are made much thinner and thus much lighter than conventional glass lenses.
A simple explanation, with images, is found on Wikipedia.
A simple explanation, with images, is found on Wikipedia.
ProvenanceThis object belonged to Edwin H. Land and came from the Rowland Institute, Harvard University. Gift of the Edwin H. Land Family.