Abstract: An interactive display includes an optical sub-frame assembly and a sub-frame suspension that operates to isolate critical optical components of the interactive display from vibration and external forces applied to the interactive display. The optical sub-frame is affixed to the display surface and coupled to a frame of the interactive display via the sub-frame suspension to provide shock and vibration damping. The optical sub-frame assembly maintains optical alignment between optical devices such as a projector, one or more lenses, an illumination source, a display screen, and a light detector. The optical components of the interactive display are thus supported by the optical sub-frame, such that vibration and external forces applied to the interactive display are much less likely to affect the optical performance of the interactive display.