Transparent Wall is mainly an analog screen built with LEDs and phototransistors. Several LEDs are mounted in a matrix on one side of a pc board, while there is the same matrix consisting of phototransistors on the other. Each phototransistor powers it’s equivalent led on the other side of the “wall” regarding the light intensity it receives. This setup allows several uses: it acts as a photoscreen on the back of a camera. Or built as a big panel it functions as a literally transparent wall behind a window or as a room divider, projecting shadowimages from one side to another.
2002/2003
A big thank you goes to John Klima for his great support.
