When you really get into spatial imaging, splitting hairs on definition is really important. To the layman, it's basically what you think of as a hologram. Holo

When you really get into spatial imaging, splitting hairs on definition is really important. To the layman, it's basically what you think of as a hologram. Holography is a photographic record of a light field. Leia might be more accurately described as a spatialized parallax display. With a light field you would be able to infinitely change your depth focus to any item in the volume because the entire light field is captured.