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About: Talaria projector     Goto   Sponge   NotDistinct   Permalink

An Entity of Type : yago:WikicatProjectors, within Data Space : dbpedia.demo.openlinksw.com associated with source document(s)

Type: yago:Artifact100021939yago:Device103183080yago:Instrumentality103575240yago:Object100002684yago:OpticalDevice103851341yago:PhysicalEntity100001930yago:Projector104009801yago:Whole100003553yago:WikicatProjectors New Facet based on Instances of this Class

Talaria was the brand name of a large-venue video projector from General Electric introduced in 1983. Light from a Xenon arc lamp was modulated by a light valve consisting of a rotating glass disc that was continuously re-coated with a viscous oil. An electron beam similar to the one in a cathode ray tube traced a raster on the surface of the coated glass, deforming the surface of the oil. Where the oil was undisturbed, the light would be reflected into a light trap. The raster traced into the oil formed a diffraction grating.