Japanese scientist invents 'invisibility cloak' A Japanese scientist has developed a coat which appears to make the wearer invisible. The illusion was part of a demonstration of optical camouflage technology at Tokyo University. It is the brainchild of Professor Susumu Tachi who is in the early stage of research he hopes will eventually make camouflaged objects virtually transparent. The photograph was taken through a viewfinder that uses a combination of moving images taken behind the wearer to give a transparent effect. It's hoped the technology will be useful for surgeons frustrated their own hands and surgical tools can block their view of operations and pilots who wish cockpit floors were transparent for landings.