Signal synthesizer for periodic acceleration and deceleration of rotating optical devices

摘要

In a stereographic projector that places a single linear polarizing wheel in the light path of the projector to impart a desired polarization state onto the projected light, a method and apparatus for periodically slowing the wheel down while in optimal states, and accelerating through invalid states. Stereo separation is greatly increased providing a marked improvement in visual quality and perceived depth when this invention is applied to such a polarizing filter wheel.