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.
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
Other Resources:
