They use lenticular silver screens for RealD 3D theaters "to maintain the light polarization upon reflection and to reduce reflection loss to counter the inherent losses by the polarization filters."
Dolby 3D theaters use a standard white screen.
IMAX 3D uses yet another screen type.
Each of these approaches requires a unique combination of screen, projector and glasses. The fact that there are competing 3D projection formats in theaters makes me expect the same competition will exist in the home theater arena--and home 3D is going to use active shutter glasses anyway, rather than the polarized lenses from the theater.
We are a LONG way away from owning one custom pair of personal 3D glasses that work in every home and theater you visit.
