Photos 1/4 First prototype of the non-contact scanner The light source is a bank of 64 light-emitting diodes that feed into fibers that deliver light to the cell. Photo courtesy of Tau Science. Photo courtesy of 2/4 First prototype of the non-contact scanner The first prototype of the non-contact scanner. Photo courtesy of Tau Science. Photo courtesy of 3/4 Compact camera and controller Photo courtesy of 4/4 Linescan and cracked cell A cracked photovoltaic cell on a module. Photo courtesy of Tau Science. Photo courtesy of