Fresnel
- noun
- /frəˈnɛl/
- Specialized
:
lente de Fresnel
- The lighthouse uses a Fresnel lens to project a strong beam of light across the sea.
And the Exploratorium sold Fresnel lenses like this one here.
- And the Exploratorium sold Fresnel lenses like this one here.
Examples
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They are much wider than they are tall, even compared to the optics, the Fresnel lenses you find on previous headsets.
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Instead, one uses diffraction lenses such as Fresnel zone plates (FZPs) or curved mirrors at extreme glancing angles where figure errors seriously affect performance.
Academic text (1995) -
You take Fresnel lens, maybe it's plastic, maybe it's glass.
-
Were they using big fresnels exclusively?
Blog text (11) -
OWS brought a battery of lecos and fresnels right to the very doorstep of the issue and blasted it with light.
Blog text (6) -
In theater production, lighting designers often choose Fresnel lenses for their ability to create soft, diffused light.
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The engineer explained how the Fresnel lens focuses light into a narrow beam, making it ideal for lighthouses.
Synonyms
175
2.5
A clear curved piece of glass or plastic that focuses light
A thin lens made of rings that focuses light for lighthouses and projectors
A curved piece of clear glass or plastic that focuses light in cameras and microscopes
Compounds
- Specialized
A thin lens made of rings that focuses light for lighthouses and projectors
Surface Forms
Etymology
Fresnel (the noun) is named for the scientist Augustin-Jean Fresnel, who invented a thin, stepped lens that focuses light with less glass. So a Fresnel is that kind of compact lens used in lighthouses and stage lights.