Liquid Crystal Display (LCD) technology will
struggle to display high resolution on screens as big as
whiteboards. Yet there is demand also for less power
consumption, three dimensional (3D) images and that the display
should be able to see gestures and feel touch. Most of these
features are possible with projection and wedge light-guides make
projection slim, but pico-projectors are so dim that many will be
needed for such a big screen. For now, we use instead a hybrid of
technologies: light-guides look out from behind an LCD to see
where the viewers’ hands and eyes are, and a collimated backlight
lets us illuminate one view at a time to each eye. This lets us
synthesize 3D with achievable increases in LCD frame rate. We
expect that this combination of a multi-view 3D display and a
view-dependent rendered image will give us the potential to
televise the experience of looking through a window