About: http://webisa.webdatacommons.org/433047581

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	Means according to claim 1, wherein the device for reflecting the light emitted by the source is a film able to reflect this light and formed on the birefringent element which, in the cavity, is most distant from the source.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com