About: http://webisa.webdatacommons.org/165986234

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The present invention presented is a catadioptric system requiring a single refractive material, in conjunction with the particularly described arrangement of mirrors, to correct for chromatic aberrations.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com