PAPILLONaddresses many of these cha

PAPILLONaddresses many of these challenges by exploring a recently proposed printed opticsapproach [26], where
the surface of display is constructed as an array of printed
optical elements, i.e. 3D light pipes, that direct images from
an image source to the surface of the display (Figure 1).
The choice of the image source is arbitrary and it could be a
traditional projector or an LCD screen.