SBS is the simplest possible 3D input format: two views packed into one rectangular frame. It is the universal input for glasses-free 3D displays. The format is small. The stereoscopic pipeline that has to follow it is not.
Vergence and accommodation evolved to agree on one physical distance. Glasses-free 3D displays force them apart. The conflict is bounded by the optics; whether a product stays at that bound depends on the tightness of the stereoscopic pipeline.
Every modern glasses-free 3D display uses a lenticular lens. The lens is the shared foundation. What separates the products is the pipeline around the lens: where eye tracking, stereoscopic rendering, and pixel routing run.
A spatial display is a glasses-free 3D screen that delivers different images to the left and right eyes so the brain can perceive depth. This article explains the category, the main optical approaches, what spatial display is and is not, where it is useful, and where it is the wrong tool.
A spatial monitor produces depth by combining two image views, an optical direction layer, eye tracking, and real-time pixel remapping. This article walks through each layer and explains why the pipeline implementation matters more than the optical element.