Here a project related to your Light Transformer by the Bauhaus master László Moholy-Nagy, his “Light-Space Modulator,” designed over many years from 1923-1932. Also called Light Prop for an Electric Stage, this kinetic sculpture that Moholy-Nagy designed and photographed was intended to create light displays for theater, dance, or other performance spaces. With its gleaming glass and metal surfaces of mobile perforated disks, a rotating glass spiral, and a sliding ball, the Light-Space Modulator created the effect of photograms in motion.
Here is a link to the Bauhaus page on this artwork: http://www.bauhaus.de/english/bauhaus1919/kunst/kunst_modulator.htm
Here is a video clip of the Light-Space Modulator in Action: http://www.youtube.com/watch?v=nVnF9A3azSA