About: http://webisa.webdatacommons.org/422015957

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 this case, it is necessary to consider not only the luminous efficiency of the light source, but also utilization efficiency of light in an optical system including a spatial light modulator unit and a projection lens.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com