fresnel
/freɪˈnɛl
/(also fresnel lens)
noun Photography
A flat lens made of a number of concentric rings, to reduce spherical aberration.The diameter of the hole is equal to the diameter of the largest complete circle on your fresnel lens....
- These were made for use in rear screen projection TV sets in conjunction with our fresnel lenses.
- Wiko replacement fresnel lenses have long been known for their superior quality.
Origin
Mid 19th century: named after A. J. Fresnel (see Fresnel, Augustin Jean).
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