Playing devil's advocate: a lot of your requirements become easier if you allow for tethering to one or more devices on your belt, or even on a backpack, through a discreet cable behind the ear. The hardest part is probably #4 (the lenses and projector) combined with #1 (looking normal).
My initial reaction is "that cable would have to be pretty darn discreet"—but I suppose wired headphones became normalized enough. I feel like there's an inherent difference in level-of-weirdness when the cable is attached to something on your eyes versus your ears, but maybe culture would adapt. Personally, I wouldn't want to bet my company on it.
