About: http://webisa.webdatacommons.org/233943538

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	This invention thus relates to novel types of liquid or semi-solid lenses which allow the focus of the lens to be altered directly by manipulating the relative positions of components of the holders of the lenses.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com