Yet another foldable device patent appears online from Microsoft, giving us a refreshed look at what Microsoft might be cooking up internally.

This past year, Microsoft has filed several patents that evolve around foldable devices, and today, yet another patent has appeared online giving us possibly our best look yet at what a potential foldable handset from Microsoft could look like. The patent is for a "Portable device with adjustable optical arrangement" and looks to be a way to solve having two optical arrangements on a single device that can then line up when closed, possibly acting as a way to compensate for thin displays resulting in small cameras. By stacking the two displays back to back the optical arrangement can in effect double in size.