Lexic.us

Definition of Fresnel lens

1. Noun. Lens composed of a number of small lenses arranged to make a lightweight lens of large diameter and short focal length.

Definition of Fresnel lens

1. Noun. The hollow cylindrical lens used in the Fresnel lamp. ¹

¹ Source: wiktionary.com

Medical Definition of Fresnel lens

1. A lens built up, progressively, in zones or steps, each zone with its own individual radius. Considerable spherical correction is attained, and the weight of the lens is greatly reduced. Fresnel lenses were originally designed for lighthouses but they are now attainable for small spotlights, automobile headlights, and similar uses. (05 Aug 1998)

Lexicographical Neighbors of Fresnel Lens

Literary usage of Fresnel lens

Below you will find example usage of this term as found in modern and/or classical literature:

1. Appletons' Annual Cyclopædia and Register of Important Events of the Year (1899)
"Charles A. Stevenson's improvements on the fresnel lens have been introduced in several Scottish lighthouses, and arc claimed to give an advantage of about ..."

2. Inventors at Work: With Chapters on Discovery by George Iles (1906)
"In fresnel lens. the compound lens devised in 1822 for lighthouses by Augustin Jean Fresnel, light is as effectively bent by the part of the glass shown in ..."

3. The Car-builder's Dictionary: An Illustrated Vocabulary of Terms which by Master Car-Builders' Association, Matthias Nace Forney, Arthur Mellen Wellington, Leander Garey, Calvin A. Smith (1906)
"A lamp inclosed in a cylindrical fresnel lens, which see. ... fresnel lens. A lens formed of concentric rings of glass or other transparent substances, ..."

4. Transactions of the American Institute of Electrical Engineers by American Institute of Electrical Engineers (1919)
"The lantern is designed to contain a high-speed incandescent light with a filament which is placed at the focal point of a fresnel lens. ..."

5. First Principles of Physics: Or Natural Philosophy, Designed for the Use of by Benjamin Silliman (1859)
"For inii-l purposes, where the fresnel lens is employed, it is necessary to give the illuminating beam of light a slight degree of divergence. ..."

6. Car Builders' Cyclopedia of American Practice by American Railway Association, Master Car Builders' Association, Mechanical Division, Association of American Railroads (1903)
"A lamp inclosed in a cylindrical fresnel lens, which see. ... fresnel lens. A lens formed of concentric rings of glass or other transparent substances, ..."

7. The American Annual Cyclopedia and Register of Important Events of the Year (1865)
"After this came the introduction of the " fresnel lens," which took the place of the reflectors ... The fresnel lens consists of a middle refracting belt, ..."

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