About: http://webisa.webdatacommons.org/323491366

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	With the doublet meniscus lens concave on the object side, it is also possible to reduce off-axis aberrations such as coma and astigmatism.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com