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Comment by jobseeker990 | Hacker News Reader

Have any further reading I can do on this?

https://www.spar3d.com/news/lidar/mits-10-lidar-chip-will-ch...

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.

I'm not an expert, but I believe that's not how holographic displays would work with optical phased arrays. I believe a phased array can make it seem that light is being emitted from any point above the display (within the display angle of the opposite side of the display). There's no need to track observers, because it would be an honest reconstruction of the light emitted from a real 3d dimensional object.

I believe that's correct - see http://www.phased-array.com/1996-Book-Chapter.html "Front projection Images" for details.

This chapter by Brian Wowk is a good start. It explains the basics and compares optical phase arrays against holography (that poor word, keeps getting abused!):

https://www.phased-array.com/1996-Book-Chapter.html

not really phased array, but https://en.wikipedia.org/wiki/Lytro

The light field conceptually belongs to geometric optics. It doesn't involve phase or the wave theory at all. It would be either an input to or output from a phased array.

Phased arrays admittedly use the wave theory in a way which is geometrically simple. Maybe "far field" is the way to describe it.

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