About: http://webisa.webdatacommons.org/282327797

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	To vary the spread angle, not only the characteristics of the LEDs in the light emitter 41 are selected, but also optical elements such as a diffuser and a lens may be used.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com