Taleria was the brand name of a large-venue video projector from General Electric.
Light from a Xenon arc lamp was modulated by a light valve consisting of a rotating glass disc that was continuously coated with an oil. An electron beam similar to the one in a cathode ray tube traced a raster on the glass, deforming the surface of the oil. Where the oil was undisturbed, the light would reflect into a trap. Where the surface of the oil was deflected, the light from the xenon lamp would pass through the glass, to a lens and onto the screen.
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