Optical camouflage

Optical camouflage

If you’re a fan of Harry Potter, then you’re quite familiar with the concept of an invisibility cloak. In his first year at Hogwarts Academy, Harry receives an invisibility cloak that used to belong to his father. As its name suggests, the invisibility cloak renders Harry invisible when he slips beneath the shining, silvery cloth.

Optical-camouflage technology developed at the University of Tokyo

 It was invented in 2004 : http://www.guardian.co.uk/science/2004/jun/13/japan.research