Microsoft has developed a new type of lens that can send light separately to each of your eyeballs:
Microsoft’s prototype display can deliver 3D video to two viewers at the same time by presenting different images to their left and right eyes (one video for each), regardless of where they are. It can also show ordinary 2D video for up to four people simultaneously (one video for each person).
So glasses-less 3D for two, or the whole family can sit on the same couch and each watch a different 2D show. That seems like the real application here.