<http://webisa.webdatacommons.org/251820425>	<http://www.w3.org/ns/prov#value>	"The Fresnel lens is preferably formed in a molded plastic sheet of a material such as polyethylene which is transparent to infrared energy within the spectrum of interest, typically 8-14 microns and translucent to visible light for diffusing the visible light." .
<http://webisa.webdatacommons.org/prov/68356703>	<http://www.w3.org/ns/prov#wasDerivedFrom>	<http://webisa.webdatacommons.org/251820425> .
<http://webisa.webdatacommons.org/251820425>	<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>	<http://www.w3.org/ns/prov#Entity> .
<http://webisa.webdatacommons.org/251820425>	<http://www.w3.org/ns/prov#wasQuotedFrom>	<google.ca> .