Why is it better than auto-stereo displays (prismatic or lenticular lens)?
The auto-stereo displays send every other display column to one eye or the other. Not only does this cut the resolution (at least) in half, but it also makes the image look coarse and jagged. The SD monitors use the full resolution of the LCD monitor so the image quality is superior. They also do not have a restricting “sweet spot” like the auto-stereo displays. The SD units can be used simultaneously by multiple viewers, whether standing or sitting. Some auto-stereo displays integrate an expensive head position tracking system in an attempt to give a slight increase in the allowed lateral head movement. Another advantage over the auto-stereo monitors is that the SD products do not require complex software to divide up a stereo image. It easily interfaces via Open GL, Direct X or other common addressing.