There are practical problems with the technology though, as light sources we can currently make have some minimum size limitations, and incoherent optical behavior starts to degrade at very small lens size (at or below micron scale I guess).
[1] You could probably create a good approximate phased array optics with led-scale (~ 10 micron scale) coherent lasers as light sources, but again I don't see any application that's not scientific
Perhaps actual phased array optics wouldn't have that issue?
For those just entering this thread, [1] is an example of a rudimentary microlens array display.
holographic displays would use eye trackers to show each eye a different image. Solid state zoom is maybe a bit of a stretch, but it would involve pixels becoming sensitive to angles more inward or outward from the sensor's center.
Phased arrays admittedly use the wave theory in a way which is geometrically simple. Maybe "far field" is the way to describe it.