It seems like this might
Work even better with a two sided OLED screen (2 screens back to back) rather than led array, for better resolution? I think that are sufficiently wide angle, at least the monochrome ones.
with this kind of spinning display you'd need to multiply the frame rate you want by the angular resolution you want.
So if you're happy with only 20 different angular views and only a 20fps refresh rate of the 3d display then that's 400fps required of the flat display