About: http://webisa.webdatacommons.org/140080651

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	An optical system including a shutter, a reflector such as a mirror, or a half mirror, and a cylindrical lens or a convex lens may be used for controlling the shape of or the course of the laser light emitted from a laser oscillator.
http://www.w3.org/ns/prov#wasQuotedFrom	google.com