Sure, but how do you build fiber optics like that? Especially so each "pixel" has to shoot out hundreds (?) of separate fibers to cover every possible angle to achieve the holographic effect?

For just a 1MP display, we're talking like hundreds of millions of fibers? That fit in some thin transparent layer? How?

I also am a bit over my head here but I’d guess the major innovation is around manufacturing glass in a way that optic channels are a natural part of the glass’ characteristics as it’s developed. We’re probably talking fiber optics at a molecular level.