About: http://webisa.webdatacommons.org/366941556

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 one embodiment, for example, the grating 34 is a surface-relief computer-generated hologram exhibiting a transmitted phase shift that varies with the inverse cosine of the angle of incidence.
http://www.w3.org/ns/prov#wasQuotedFrom	google.fr