Hyper-radial Fresnel lens

GPTKB entity

Statements (17)
Predicate Object
gptkbp:instanceOf Lens
gptkbp:category Lighthouse technology
Optical lens
gptkbp:diameter 1330 mm
gptkbp:height 1330 mm
https://www.w3.org/2000/01/rdf-schema#label Hyper-radial Fresnel lens
gptkbp:introducedIn late 19th century
gptkbp:inventedBy John Richardson Wigham
gptkbp:rank first-order Fresnel lens
gptkbp:usedFor maximum light intensity
gptkbp:usedIn gptkb:Cape_Race_Lighthouse
lighthouses
Great Basses Reef Lighthouse
Makapu'u Point Light
gptkbp:bfsParent gptkb:Makapu'u_Point_Lighthouse
gptkb:Makapu'u_Lighthouse
gptkbp:bfsLayer 7