It's not a hologram. It's "45 discrete views of a 3d scene presented over a 50 degree cone."[1] It's a volumetric display made from a flat display by spreading the pixels over 45 planes.
Can't say I'm a fan of them using the name Looking Glass. Looking Glass Studios may have gone bankrupt twenty years ago but they're still much more famous than this one.
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[ 2.6 ms ] story [ 22.7 ms ] thread[1] https://docs.lookingglassfactory.com/Appendix/how-it-works/