Share this entry

fresnel Line breaks: fres|nel
Pronunciation: /freɪˈnɛl/
(also fresnel lens)

Definition of fresnel in English:


A flat lens made of a number of concentric rings, to reduce spherical aberration.
Example sentences
  • 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.


Mid 19th century: named after A. J. Fresnel (see Fresnel, Augustin Jean).

Definition of fresnel in:

Share this entry


What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day exemplum
Pronunciation: ɪɡˈzɛmpləm
an example or model...