Fresnel lens
E129015
A Fresnel lens is a compact, lightweight lens design composed of concentric rings that allows lighthouses and other optical systems to project powerful, focused beams of light over long distances.
All labels observed (10)
How this entity was disambiguated
This entity first appeared as the object of triple T1116484 — resolving that mention is where its identity was fixed. The disambiguator weighed these candidate entities and picked the highlighted one (or “None”, minting a new entity). This is how homonymy is resolved: the same surface form can point to different entities.
NED1
Entity disambiguation (via context triple)
gpt-5-mini-2025-08-07
Target entity: Fresnel lens Context triple: [Portland Head Light, laterLensType, Fresnel lens]
-
A.
Barlow lenses
Barlow lenses are optical accessories used in telescopes to effectively increase focal length and magnification by diverging the light path before it reaches the eyepiece.
-
B.
Cassegrain focus
Cassegrain focus is a telescope optical configuration in which light is reflected by a secondary mirror back through a hole in the primary mirror to form a compact, accessible focal point behind the primary.
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C.
Dioptrique
Dioptrique is a scientific treatise by René Descartes that lays out his pioneering theories on light and optics, including the law of refraction.
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D.
Optica
Optica is a leading scientific society dedicated to advancing the study and application of optics and photonics worldwide.
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E.
Schmidt–Cassegrain telescope design
The Schmidt–Cassegrain telescope design is a compact catadioptric optical system that combines a spherical primary mirror with a Schmidt corrector plate to provide long focal lengths in a short, portable tube widely used in amateur and professional astronomy.
- F. None of above. chosen
- G. Unsure - the case is ambiguous/there is not enough information to decide.
NED2
Entity disambiguation (via description)
gpt-5-mini-2025-08-07
Target entity: Fresnel lens Target entity description: A Fresnel lens is a compact, lightweight lens design composed of concentric rings that allows lighthouses and other optical systems to project powerful, focused beams of light over long distances.
-
A.
Barlow lenses
Barlow lenses are optical accessories used in telescopes to effectively increase focal length and magnification by diverging the light path before it reaches the eyepiece.
-
B.
Cassegrain focus
Cassegrain focus is a telescope optical configuration in which light is reflected by a secondary mirror back through a hole in the primary mirror to form a compact, accessible focal point behind the primary.
-
C.
Dioptrique
Dioptrique is a scientific treatise by René Descartes that lays out his pioneering theories on light and optics, including the law of refraction.
-
D.
Optica
Optica is a leading scientific society dedicated to advancing the study and application of optics and photonics worldwide.
-
E.
Schmidt–Cassegrain telescope design
The Schmidt–Cassegrain telescope design is a compact catadioptric optical system that combines a spherical primary mirror with a Schmidt corrector plate to provide long focal lengths in a short, portable tube widely used in amateur and professional astronomy.
- F. None of above. chosen
Statements (73)
| Predicate | Object |
|---|---|
| instanceOf |
imaging system element
ⓘ
optical component ⓘ optical lens ⓘ |
| appliedIn |
automotive safety
ⓘ
aviation lighting ⓘ display technology ⓘ marine navigation ⓘ solar energy collection ⓘ |
| developedBy | Augustin-Jean Fresnel ⓘ |
| field |
optics
ⓘ
photonics ⓘ |
| hasAdvantage |
allows large aperture with less material
ⓘ
can be manufactured in large diameters ⓘ enables powerful lighthouse beams ⓘ reduces thickness compared to conventional lens ⓘ reduces weight compared to conventional lens ⓘ |
| hasDisadvantage |
chromatic aberration
ⓘ
increased scattering ⓘ lower image quality than high-quality conventional lenses ⓘ surface artifacts ⓘ |
| hasPart |
concentric annular zones
ⓘ
grooves ⓘ prismatic segments ⓘ |
| hasProperty |
can be diffractive
ⓘ
can be flat or slightly curved ⓘ can be hybrid refractive-diffractive ⓘ can be linear (cylindrical) ⓘ can be refractive ⓘ can be rotationally symmetric ⓘ compact ⓘ concentric rings ⓘ large aperture possible ⓘ lightweight ⓘ reduced material volume ⓘ reduced weight ⓘ segmented surface ⓘ short focal length possible ⓘ stepped profile ⓘ thin ⓘ |
| madeOf |
acrylic
ⓘ
glass ⓘ other optical plastics ⓘ polycarbonate ⓘ |
| namedAfter | Augustin-Jean Fresnel ⓘ |
| relatedTo |
conventional refractive lens
ⓘ
diffractive optical element ⓘ zone plate ⓘ |
| typicalShape |
circular
ⓘ
cylindrical ⓘ rectangular sheet ⓘ |
| usedFor |
collimating light
ⓘ
concentrating sunlight ⓘ focusing light ⓘ projecting beams over long distances ⓘ reducing lens thickness ⓘ reducing lens weight ⓘ |
| usedIn |
VR and AR displays
ⓘ
automotive lighting ⓘ handheld magnifiers ⓘ head-mounted displays ⓘ imaging systems ⓘ lighthouses ⓘ magnifying sheets ⓘ non-imaging optical concentrators ⓘ overhead projectors ⓘ projection televisions ⓘ searchlights ⓘ solar concentrators ⓘ solar cookers ⓘ solar thermal power systems ⓘ spotlights ⓘ stage lighting ⓘ traffic signals ⓘ |
How these facts were elicited
The pipeline generated the facts above by prompting gpt-5.1 with this entity's name + description and the instruction below.
Instruction
You are a knowledge base construction expert. Given a subject entity and a description of it, return factual statements that you know for the subject as a JSON list of dictionaries(triples), where keys must be "subject", "predicate" and "object". The number of facts may be very high, between 25 to 50 or more, for very popular subjects. For less popular subjects, the number of facts can be very low, like 5 or 10. # Requirements - If you don't know the subject at all, return an empty list. - If the subject is not a named entity, return an empty list. - Include at least one triple where predicate is "instanceOf". - Do not get too wordy. - Separate several objects into multiple triples with one object.
Input
Subject: Fresnel lens Description of subject: A Fresnel lens is a compact, lightweight lens design composed of concentric rings that allows lighthouses and other optical systems to project powerful, focused beams of light over long distances.
Referenced by (64)
Full triples — surface form annotated when it differs from this entity's canonical label.
linked to: Fresnel lens
subject linked to:
Augustin-Jean
subject linked to:
Yaquina Head Lighthouse (nearby headland)
linked to: Fresnel lens
linked to: Fresnel lens
linked to: Fresnel lens
linked to: Fresnel lens
linked to: Fresnel lens
linked to: Fresnel lens
linked to: Fresnel lens
linked to: Fresnel lens
linked to: Fresnel lens
linked to: Fresnel lens
linked to: Fresnel lens
linked to: Fresnel lens
subject linked to:
Au Sable Light Station (nearby)
linked to: Fresnel lens