RePro3D, developed by a research group at Keio University, is a multi-perspective, naked eye 3D display in which viewers can touch a 3D character floating in midair. The touchable 3D display is a combination of three elements. A mechanically-controlled model environment, a tactile interface and a glasses-free 3D integral imaging display.
“We use retro-reflective projection technology, using materials with special retro-reflective characteristics. This kind of material reflects light that enters back at the same angle it entered.
Akihabara News, Keio University demonstrate Touchable 3D Character Projected Into a Real Environment
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