About: http://webisa.webdatacommons.org/256937113

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	In order to direct the exiting light in a particular direction, i.e. to the right or to the left, etc., the lens 100??? is formed as a prismatic lens as shown in FIG. 10.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr