It turns out 3D glasses aren’t just a scam cooked up by optics nerds to make us all look like dorks; glasses-free 3D projection is just really difficult (read: pricey).
But that could change relatively soon. A recent article by a joint research team from four South Korean universities details a projection method that would send all those uncomfortable plastic glasses to the dump where they belong. The new technology, which involves stuff called parallax barriers and quarter-wave retarding film, is still plenty confusing; but unlike pre-existing possibilities for naked-eye 3D (e.g. Nintendo’s 3DS) it could be cheap.